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Securing The Future: Clay-Based Solutions For a Comprehensive and Sustainable Potable-Water Supply System

Published online by Cambridge University Press:  01 January 2024

Giora Rytwo
Giora Rytwo*
Affiliation:
Environmental Physical Chemistry Laboratory, MIGAL — Galilee Research Institute, Kiryat Shmona, Israel Department of Environmental Sciences, Tel Hai College, Upper Galilee, Israel
*
*E-mail address of corresponding author: giorarytwo@gmail.com
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Abstract

Today’s water-treatment plants combine practices designed to cope individually with various types of purification challenges. In some cases, the solution to one has detrimental effects on others, e.g. disinfection by chlorination forming hazardous organic contaminants. Water-treatment plants have large ecological footprints and operational costs, making the availability of high-quality water in developing areas almost impossible, due to lack of resources and infrastructure. Indeed, >2 billion people are exposed to diseases caused by contaminated water. Clearly, bringing safe, clean drinking water to people’s homes is essential to a good quality of life. Clay minerals may offer technologies and innovative practices which would help to develop a reliable, low-maintenance device with a small environmental footprint that processes stream, lake, or pond water into high-quality potable water. The basis for such technologies has already been established and improved approaches are being introduced on an ongoing basis by clay scientists: nanocomposite pre-treatment and disinfection, photodegradation of organic pollutants using clay-based catalysts, polishing of inorganic contaminants, and removal of biological pathogens by adsorption or deactivation onto specifically designed clay-based filters, etc. This short review presents a vision for combining those technologies in a tandem system for the delivery of high-quality water that is low-maintenance, affordable, and environmentally sustainable for the benefit of mankind.

Keywords

NanocompositePathogensPhotodegradationPotable WaterWater-processing
Type
Article
Information
Clays and Clay Minerals , Volume 66 , Issue 4 , August 2018 , pp. 315 - 328
Copyright
Copyright © Clay Minerals Society 2018

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Footnotes

This paper was originally presented during the session NT-06: Clays, organoclays, and nanocomposites in water treatment during ICC 2017.

References

Abd El-Rady, A.A., Abd El-Sadek, M.S., El-Sayed Breky, M.M., and Assaf, F.H. (2013) Characterization and photocatalytic efficiency of palladium doped-TiO2 nanoparticles. Advances in Nanoparticles, 2, 372–377.CrossRefGoogle Scholar
Abollino, O., Aceto, M., Malandrino, M., Sarzanini, C., and Mentasti, E. (2003) Adsorption of heavy metals on Namontmorillonite. Effect of pH and organic substances. Water Research, 37, 1619–1627.CrossRefGoogle ScholarPubMed
Acevedo, F., Pizzul, L., Castillo, M., González, M.E., Cea, M., Gianfreda, L., and Diez, M.C. (2010) Degradation of polycyclic aromatic hydrocarbons by free and nanoclayimmobilized manganese peroxidase from anthracophyllum discolor. Chemosphere, 80, 271–278.CrossRefGoogle ScholarPubMed
Ahn, M.Y., Filley, T.R., and Jafvert, C.T. (2006) Photodegradation of decabromodiphenyl ether adsorbed onto clay minerals, metal oxides, and sediment. Environmental Science & Technology, 40, 215–220.CrossRefGoogle ScholarPubMed
Alther, G.R. (1995) Organically modified clay removes oil from water. Waste Management, 15, 623–628.CrossRefGoogle Scholar
Alther, G.R. (1999) Granular organoclay for high temperature applications. US Patent Grant US6093241A, Google Patents.Google Scholar
Alther, G. (2000) Biocidal organoclay. US Patent Grant US6165485A, Google Patents.Google Scholar
Alther, G.R. (2001) How to remove emulsified oil from wastewater with organoclays: Water quality products. Water Quality Publications. <> (accessed 21 May 2016).Google Scholar
Avnir, D., Farin, D., and Pfeifer, P. (1985) Surface geometric irregularity of particulate materials: The fractal approach. Journal of Colloid and Interface Science, 103, 112–123.CrossRefGoogle Scholar
Beall, G.W. (2003) The use of organo-clays in water treatment. Applied Clay Science, 24, 11–20.CrossRefGoogle Scholar
Bel Hadjltaief, H., Galvez, M.E., Ben Zina, M., and Da Costa, P. (2014) TiO2/clay as a heterogeneous catalyst in photocatalytic/photochemical oxidation of anionic reactive blue 19. Arabian Journal of Chemistry. .Google Scholar
Ben Moshe, S. and Rytwo, G. (2018) Thiamine-based organoclay for phenol removal from water. Applied Clay Science, 155, 50–56.CrossRefGoogle Scholar
Benotti, M.J., Stanford, B.D., Wert, E.C., and Snyder, S.A. (2009) Evaluation of a photocatalytic reactor membrane pilot system for the removal of pharmaceuticals and endocrine disrupting compounds from water. Water Research, 43, 1513–1522.CrossRefGoogle ScholarPubMed
Bergaya, F., Jaber, M., and Lambert, J.-F. (2012) Clays and clay minerals as layered nanofillers for (bio)polymers. Pp. 41–75 in: Environmental Silicate Nano-Biocomposites (Avérous, L. and Pollet, E., editors). Springer, Berlin.CrossRefGoogle Scholar
Bleiman, N. and Mishael, Y.G. (2010) Selenium removal from drinking water by adsorption to chitosan–clay composites and oxides: Batch and columns tests. Journal of Hazardous Materials, 183, 590–595.CrossRefGoogle ScholarPubMed
Boal, A.K., Rhodes, C., and Garcia, S. (2015) Pump-and-treat groundwater remediation using chlorine/ultraviolet advanced oxidation processes. Groundwater Monitoring and Remediation, 35, 93–100.CrossRefGoogle Scholar
Borisover, M., Graber, E.R., Bercovich, F., and Gerstl, Z. (2001) Suitability of dye–clay complexes for removal of non-ionic organic compounds from aqueous solutions. Chemosphere, 44, 1033–1040.CrossRefGoogle ScholarPubMed
Buzetzky, D., Nagy, N.M., and Kónya, J. (2017) Use of La-, Ce-, Y-, Fe- bentonites for removing phosphate ions from aqueous media. Periodica Polytechnica Chemical Engineering, 61, 27–32.CrossRefGoogle Scholar
Cabeza, Y., Candela, L., Ronen, D., and Teijon, G. (2012) Monitoring the occurrence of emerging contaminants in treated wastewater and groundwater between 2008 and 2010. The Baix Llobregat (Barcelona, Spain). Journal of Hazardous Materials, 239–240, 32–39.Google Scholar
Calamari, D., Zuccato, E., Castiglioni, S., Bagnati, R., and Fanelli, R. (2003) Strategic survey of therapeutic drugs in the Rivers Po and Lambro in northern Italy. Environmental Science & Technology, 37, 1241–1248.CrossRefGoogle Scholar
Carretero, M.I., Gomes, C.S.F., and Tateo, F. (2013) Clays, drugs, and human health. Pp. 711 –764 in: Handbook of Clay Science (Bergaya, F. and Lagaly, G., editors). Developments in Clay Science. Elsevier, Amsterdam.Google Scholar
Centi, G., Perathoner, S., Torre, T., and Verduna, M.G. (2000) Catalytic wet oxidation with H2O2 of carboxylic acids on homogeneous and heterogeneous Fenton-type catalysts. Catalysis Today, 55, 61–69.CrossRefGoogle Scholar
CETCO (2016) Products, Environmental Products; Organoclays. .Google Scholar
Chakraborti, R.K., Gardner, K.H., Atkinson, J.F., and Van Benschoten, J.E. (2003) Changes in fractal dimension during aggregation. Water Research, 37, 873–883.CrossRefGoogle ScholarPubMed
Chang, Y.-T., Lee, J.-F., Liu, K.-H., Liao, Y.-F., and Yang, V. (2015) Immobilization of fungal laccase onto a nonionic surfactant-modified clay material: application to PAH degradation. Environmental Science and Pollution Research, 23, 4024–4035.CrossRefGoogle ScholarPubMed
Chefetz, B., Mualem, T., and Ben-Ari, J. (2008) Sorption and mobility of pharmaceutical compounds in soil irrigated with reclaimed wastewater. Chemosphere, 73, 1335–1343.CrossRefGoogle ScholarPubMed
Chen, D., Du, G., Zhu, Q., and Zhou, F. (2013) Synthesis and characterization of TiO2 pillared montmorillonites: Application for methylene blue degradation. Journal of Colloid and Interface Science, 409, 151–157.CrossRefGoogle ScholarPubMed
Chen, L.-F., Liang, H.-W., Lu, Y., Cui, C.-H., and Yu, S.-H. (2011) Synthesis of an attapulgite Clay@Carbon nanocomposite adsorbent by a hydrothermal carbonization process and their application in the removal of toxic metal ions from water. Langmuir, 27, 8998–9004.CrossRefGoogle ScholarPubMed
Choi, C.S. and Yun, T. Il. (2002) Rapid coagulation-flocculation and sedimentation type waste water treatment method. US Patent Grant US6447686B1, Google Patents.Google Scholar
Chong, M.N., Jin, B., Chow, C.W.K., and Saint, C. (2010) Recent developments in photocatalytic water treatment technology: A review. Water Research, 44, 2997–3027.CrossRefGoogle ScholarPubMed
Churchman, G.J., Gates, W.P., Theng, B.K.G., and Yuan, G. (2006) Clays and clay minerals for pollution control. Pp. 625–675 in: Handbook of Clay Science (Bergaya, F., Theng, B.K.G., and Lagaly, G., editors). Developments in Clay Science, Elsevier, Amsterdam.CrossRefGoogle Scholar
Di Credico, B., Bellobono, I.R., D'Arienzo, M., Fumagalli, D., Redaelli, M., Scotti, R., and Morazzoni, F. (2015) Efficacy of the reactive oxygen species generated by immobilized TiO2 in the photocatalytic degradation of diclofenac. International Journal of Photoenergy, 2015, 1–13.CrossRefGoogle Scholar
Cuevas, J., Leguey, S., and Ruiz, A.I. (2011) Evidence for the biogenic origin of sepiolite. Pp. 219–238 in: Developments in Palygorskite-Sepiolite Research (Galan, E. and Singer, A., editors). Developments in Clay Science, 3, Elsevier, Amsterdam.CrossRefGoogle Scholar
Derosa, M.C. and Crutchley, R.J. (2002) Photosensitized singlet oxygen and its applications. Coordination Chemistry Reviews, 234, 351–371.CrossRefGoogle Scholar
Drozd, D., Szczubiałka, K., Skiba, M., Kepczynski, M., and Nowakowska, M. (2014) Porphyrin–nanoclay photosensitizers for visible light induced oxidation of phenol in aqueous media. The Journal of Physical Chemistry C, 118, 9196–9202.CrossRefGoogle Scholar
Ebele, A.J., Abou-Elwafa Abdallah, M., and Harrad, S. (2017) Pharmaceuticals and personal care products (PPCPs) in the freshwater aquatic environment. Emerging Contaminants, 3, 1–16.CrossRefGoogle Scholar
Edzwald, J.K. and Haarhoff, J. (2011) Seawater pretreatment for reverse osmosis: Chemistry, contaminants, and coagulation. Water Research, 45, 5428–5440.CrossRefGoogle ScholarPubMed
El-Shahawi, M.S., Hamza, A., Bashammakh, A.S., and AlSaggaf, W.T. (2010) An overview on the accumulation, distribution, transformations, toxicity and analytical methods for the monitoring of persistent organic pollutants. Talanta, 80, 1587–1597.CrossRefGoogle ScholarPubMed
ERD (2011) Water, energy and land... a radical rethink. European Report on Development. Google Scholar
EU Environment Directorate General (2016) Drinking Water Directive–Environment–European Commission. <.Google Scholar
European Parliament and Council (2013) DIRECTIVE 2013/39/EU OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL amending Directives 2000/60/EC and 2008/105/EC as regards priority substances in the field of water policy. 17 pp. ().Google Scholar
Exbrayat, J.-M., Moudilou, E.N., and Lapied, E. (2015) Harmful effects of nanoparticles on animals. Journal of Nanotechnology, 2015, 1–10.CrossRefGoogle Scholar
Ezzatahmadi, N., Ayoko, G.A., Millar, G.J., Speight, R., Yan, C., Li, J., Li, S., Zhu, J., and Xi, Y. (2017) Clay-supported nanoscale zero-valent iron composite materials for the remediation of contaminated aqueous solutions: A review. Chemical Engineering Journal, 312, 336–350.CrossRefGoogle Scholar
Fan, Y., Ma, W., Han, D., Gan, S., Dong, X., and Niu, L. (2015) Convenient recycling of 3D AgX/graphene aerogels (X = Br, Cl) for efficient photocatalytic degradation of water pollutants. Advanced Materials, 27, 3767–73.CrossRefGoogle ScholarPubMed
Farrah, H. and Pickering, W.F. (1979) pH effects in the adsorption of heavy metal ions by clays. Chemical Geology, 25, 317–326.CrossRefGoogle Scholar
Fawell, J.K. (1993) The impact of inorganic chemicals on water quality and health. Annali dell'Istituto Superiore di Sanita, 29, 293–303.Google ScholarPubMed
Ganigar, R., Rytwo, G., Gonen, Y., Radian, A., and Mishael, Y.G. (2010) Polymer-clay nanocomposites for the removal of trichlorophenol and trinitrophenol from water. Applied Clay Science, 49, 311–316.CrossRefGoogle Scholar
Geldreich, E.E. (2005) Better intervention strategies are needed to reduce the risk of waterborne outbreaks. Journal of Water and Health, 3, 197–208.CrossRefGoogle Scholar
Goh, K.-H., Lim, T.-T., and Dong, Z. (2008) Application of layered double hydroxides for removal of oxyanions: A review. Water Research, 42, 1343–1368.CrossRefGoogle ScholarPubMed
Gonen, Y. and Rytwo, G. (2006) Using the dual-mode model to describe adsorption of organic pollutants onto an organoclay. Journal of Colloid and Interface Science, 299, 95–101.CrossRefGoogle ScholarPubMed
Grassi, M., Kaykioglu, G., Belgiorno, V., and Lofrano, G. (2012) Removal of Emerging Contaminants from Water and Wastewater by Adsorption Process, pp. 15–37, Springer, Berlin.Google Scholar
Grossberger, A., Hadar, Y., Borch, T., and Chefetz, B. (2014) Biodegradability of pharmaceutical compounds in agricultural soils irrigated with treated wastewater. Environmental Pollution, 185, 168–177.CrossRefGoogle ScholarPubMed
Growing Blue (2013) U.S. Water Infrastructure and Debt Water Cost Increasing. .Google Scholar
Han, Y.-S., Lee, S.-H., Choi, K.H., and Park, I. (2010) Preparation and characterization of chitosan–clay nanocomposites with antimicrobial activity. Journal of Physics and Chemistry of Solids, 71, 464–467.CrossRefGoogle Scholar
Hashimoto, K., Irie, H., and Fujishima, A. (2005) TiO2 photocatalysis: A historical overview and future prospects. Japanese Journal of Applied Physics, 44, 8269–8285.CrossRefGoogle Scholar
Herney-Ramirez, J., Vicente, M.A., and Madeira, L.M. (2010) Heterogeneous photo-Fenton oxidation with pillared claybased catalysts for wastewater treatment: A review. Applied Catalysis B: Environmental, 98, 10–26.CrossRefGoogle Scholar
Herrmann, J.-M. (1999) Heterogeneous photocatalysis: fundamentals and applications to the removal of various types of aqueous pollutants. Catalysis Today, 53, 115–129.CrossRefGoogle Scholar
Hlavinek, P., Bonacci, O., Marsalek, J., and Mahrikova, I., 2008)editors (Dangerous Pollutants (Xenobiotics) in Urban Water Cycle. 343 pp., Springer, Berlin.CrossRefGoogle Scholar
Irawaty, W., Soetaredjo, F.E., and Ayucitra, A. (2014) Understanding the relationship between organic structure and mineralization rate of TiO2-mediated photocatalysis. Procedia Chemistry, 9, 131–138.CrossRefGoogle Scholar
Ismadji, S., Soetaredjo, F.E., and Ayucitra, A. (2015) Natural clay minerals as environmental cleaning agents. Pp. 5–37 in: Clay Materials for Environmental Remediation (Ismadji, S., Soetaredjo, F. Edi, and Ayucitra, A., editors). Springer, Berlin.CrossRefGoogle Scholar
Iurascu, B., Siminiceanu, I., Vione, D., Vicente, M.A., and Gil, A. (2009) Phenol degradation in water through a heterogeneous photo-Fenton process catalyzed by Fe-treated Laponite. Water Research, 43, 1313–1322.CrossRefGoogle ScholarPubMed
Jimenez, C.Á. (2015) Cómo es el avance en la cobertura de acueducto en Colombia? ELTIEMPO.COM. <> (accessed 29 July 2015) (in Spanish).+(accessed+29+July+2015)+(in+Spanish).>Google Scholar
Jin, S., Fallgren, P.H., Morris, J.M., and Chen, Q. (2007) Removal of bacteria and viruses from waters using layered double hydroxide nanocomposites. Science and Technology of Advanced Materials, 8, 67–70.CrossRefGoogle Scholar
Jucker, B.A., Harms, H., andZehnder, A.J. (1996) Adhesion of the positively charged bacterium Stenotrophomonas (Xanthomonas) maltophilia 70401 to glass and Teflon. Journal of Bacteriology, 178, 5472–5479.CrossRefGoogle ScholarPubMed
Kalfa, A., Rakovitsky, N., Tavassi, M., Ryskin, M., Ben-Ari, J., Etkin, H., Shuali, U., and Nir, S. (2017) Removal of Escherichia coli and total bacteria from water by granulated micelle-clay complexes: Filter regeneration and modeling of filtration kinetics. Applied Clay Science, 147, 63–68.CrossRefGoogle Scholar
Koh, S.-M. and Dixon, J.B. (2001) Preparation and application of organo-minerals as sorbents of phenol, benzene and toluene. Applied Clay Science, 18, 111–122.CrossRefGoogle Scholar
König, T.N. (2011) Clays and organoclays for the removal of humic acid from water. Doctoral thesis, Tel Hai College, Isral.Google Scholar
Li, W., Zuo, P., Xu, D., Xu, Y., Wang, K., Bai, Y., and Ma, H. (2017) Tunable adsorption properties of bentonite/carboxymethyl cellulose-g-poly(2-(dimethylamino) ethyl methacrylate) composites toward anionic dyes. Chemical Engineering Research and Design, 124, 260–270.CrossRefGoogle Scholar
Li, X., Zhao, Y., Xi, B., Mao, X., Gong, B., Li, R., Peng, X., and Liu, H. (2016) Removal of nitrobenzene by immobilized nanoscale zero-valent iron: Effect of clay support and efficiency optimization. Applied Surface Science, 370, 260–269.CrossRefGoogle Scholar
Li, X.Q., Elliott, D.W., and Zhang, W.X. (2006) Zero-valent iron nanoparticles for abatement of environmental pollutants: Materials and engineering aspects. Critical Reviews in Solid State and Materials Sciences, 31, 111–122.CrossRefGoogle Scholar
Litaor, M.I.I., Meir-Dinar, N., Castro, B., Azaizeh, H., Rytwo, G., Levi, N., Levi, M., and MarChaim, U. (2015) Treatment of winery wastewater with aerated cells mobile system. Environmental Nanotechnology, Monitoring & Management, 4, 17–26.CrossRefGoogle Scholar
Lukman, S., Essa, M.H., Mu'azu, D., Bukhari, N., Bukhari, A., and Basheer, C. (2013) Adsorption and desorption of heavy metals onto natural clay material: Influence of initial pH. Journal of Environmental Science and Technology, 6, 1–15.CrossRefGoogle Scholar
Masaphy, S., Zohar, S., and Jander-Shagug, G. (2014) Biodegradation of p-nitrophenol sorbed onto crystal violetmodified organoclay by Arthrobacter sp. 4Hp\ Applied Microbiology and Biotechnology, 98, 1321–1327.CrossRefGoogle Scholar
Mazille, F. and Spuhler, D. (2012) Coagulation-Flocculation. The SSWM Toolbox. Basel: seecon international GmBh. <> (Accessed 22 March 2016).Google Scholar
Miyamoto, N., Kawai, R., Kuroda, K., and Ogawa, M. (2000) Adsorption and aggregation of a cationic cyanine dye on layered clay minerals. Applied Clay Science, 16, 161–170.CrossRefGoogle Scholar
Mohan, D. and Pittman, C.U. Jr. (2007) Arsenic removal from water/wastewater using adsorbents–A critical review. Journal of Hazardous Materials, 142, 1–53.CrossRefGoogle ScholarPubMed
Monser, L. and Adhoum, N. (2002) Modified activated carbon for the removal of copper, zinc, chromium and cyanide from wastewater. Separation and Purification Technology, 26, 137–146.CrossRefGoogle Scholar
Mortland, M.M. (1986) Clay–organic complexes as adsorbents for phenol and chlorophenols1. Clays and Clay Minerals, 34, 581–585.CrossRefGoogle Scholar
Nafees, M. and Waseem, A. (2014) Organoclays as sorbent material for phenolic compounds: A review. CLEAN–Soil, Air, Water, 42, 1500–1508.CrossRefGoogle Scholar
National Research Council (1997) Comparing costs of remediation technologies. P. 310 in: Innovations in Ground Water and Soil Cleanup. National Academies Press, Washington, D.C.Google Scholar
Ning, F., Shao, M., Xu, S., Fu, Y., Zhang, R., Wei, M., Evans, D.G., and Duan, X. (2016) TiO2/graphene/NiFe-layered double hydroxide nanorod array photoanodes for efficient photoelectrochemical water splitting. Energy & Environmental Science, 9, 2633–2643.CrossRefGoogle Scholar
Nir, S. and Ryskin, M. (2016) Method of production of granulated micelle-clay complexes: application for removal of organic, inorganic anionic pollutants and microorganisms from contaminated water. US 2016-0002068, US.Google Scholar
Ogawa, M., Sohmiya, M., and Watase, Y. (2011) Stabilization of photosensitizing dyes by complexation with clay. Chemical Communications, 47, 8602–8604.CrossRefGoogle ScholarPubMed
Olshansky, Y., Masaphy, S., Root, R.A., and Rytwo, G. (2018) Immobilization of Rhus vernicifera laccase on sepiolite; effect of chitosan and copper modification on laccase adsorption and activity. Applied Clay Science, 152, 143–147.CrossRefGoogle Scholar
Palmero, P. (2015) Structural ceramic nanocomposites: A review of properties and powders' synthesis methods. Nanomaterials, 5, 656–696.CrossRefGoogle Scholar
Paltiel, O., Fedorova, G., Tadmor, G., Kleinstern, G., Maor, Y., and Chefetz, B. (2016) Human exposure to wastewaterderived pharmaceuticals in fresh produce: A randomized controlled trial focusing on carbamazepine. Environmental Science & Technology, 50, 4476–4482.CrossRefGoogle ScholarPubMed
Petala, E., Dimos, K., Douvalis, A., Bakas, T., Tucek, J., Zbořil, R., and Karakassides, MA. (2013) Nanoscale zerovalent iron supported on mesoporous silica: Characterization and reactivity for Cr(VI) removal from aqueous solution. Journal of Hazardous Materials, 261, 295–306. Elsevier.Google Scholar
Pfeifer, P. (1984) Fractal dimension as working tool for surface-roughness problems. Applications of Surface Science, 18, 146–164.CrossRefGoogle Scholar
Pozzo, R.L., Giombi, J.L., Baltanás, M.A., and Cassano, A.E. (2000) The performance in a fluidized bed reactor of photocatalysts immobilized onto inert supports. Catalysis Today, 62, 175–187.CrossRefGoogle Scholar
Qin, C., Chen, C., Shang, C., andXia, K. (2018) Fe3+-saturated montmorillonite effectively deactivates bacteria in wastewater. Science of The Total Environment, 622–623, 88–95.CrossRefGoogle Scholar
Radian, A., Carmeli, M., Zadaka-Amir, D., Nir, S., Wakshal, E., and Mishael, Y.G. (2011) Enhanced removal of humic acid from water by micelle-montmorillonite composites: Comparison to granulated activated carbon. Applied Clay Science, 54, 258–263.CrossRefGoogle Scholar
Rajamanickam, D. and Shanthi, M. (2012) Photocatalytic degradation of an organic pollutant by zinc oxide–solar process. Arabian Journal of Chemistry, 9 (supplement 2), S1858-S1868.Google Scholar
Ramirez, J.H., Costa, C.A., Madeira, L.M., Mata, G., Vicente, M.A., Rojas-Cervantes, M.L., López-Peinado, A.J., and Martín-Aranda, R.M. (2007) Fenton-like oxidation of Orange II solutions using heterogeneous catalysts based on saponite clay. Applied Catalysis B: Environmental, 71, 44–56.CrossRefGoogle Scholar
right2water (2015) Water campaign | Water and sanitation are a human right! <.Google Scholar
Ruiz-Hitzky, E. (2001) Molecular access to intracrystalline tunnels of sepiolite. Journal of Materials Chemistry, 11, 86–91.CrossRefGoogle Scholar
Ruiz-Hitzky, E., Aranda, P., Darder, M., and Rytwo, G. (2010) Hybrid materials based on clays for environmental and biomedical applications. Journal of Materials Chemistry, 20, 9306–9321.CrossRefGoogle Scholar
Rytwo, G. (2004) Applying a Gouy-Chapman-Stern model for adsorption of organic cations to soils. Applied Clay Science, 24, 137–147.CrossRefGoogle Scholar
Rytwo, G. (2012) The use of clay-polymer nanocomposites in wastewater pretreatment. The Scientific World Journal, 2012, 1–7.CrossRefGoogle ScholarPubMed
Rytwo, G. (2015) A continuous-flow device for photocatalytic degradation and full mineralization of priority pollutants in water. American Chemical Society National Meeting & Exposition, 57, 16424–16434.Google Scholar
Rytwo, G. (2016) Methods for Production of Potable Water. PCT/IL2016/050700, WO2017158581 A1.Google Scholar
Rytwo, G. (2017a) Hybrid Clay-Polymer Nanocomposites for the Clarification of Water and Effluents. Recent Patents on Nanotechnology, 11, 181–193.CrossRefGoogle ScholarPubMed
Rytwo, G. (2017b) Method for pretreatment of wastewater and recreational water with nanocomposites. USPTO US9546102.Google Scholar
Rytwo, G. and Daskal, G. (2016) A system for treatment of polluted effluents. PCT/IL2015/050944, WO2016042558 A1.Google Scholar
Rytwo, G. and Gonen, Y. (2006) Very fast sorbent for organic dyes and pollutants. Colloid & Polymer Science, 284, 817–820.CrossRefGoogle Scholar
Rytwo, G. and Margalit, S. (2014) A worksheet based model for adsorption of pollutants on sorbents with multiple sites and sorption mechanisms. International Journal of Science and Research, 3, paper ID OCT1445.Google Scholar
Rytwo, G., Nir, S., Margulies, L., Casal, B., Merino, J., Ruiz-Hitzky, E., and Serratosa, J.M. (1998) Adsorption of monovalent organic cations on sepiolite; experimental results and model calculations. Clays and Clay Minerals, 46, 340–348.CrossRefGoogle Scholar
Rytwo, G., Kohavi, Y., Botnick, I., and Gonen, Y. (2007) Use of CV- and TPP-montmorillonite for the removal of priority pollutants from water. Applied Clay Science, 36, 182–190.CrossRefGoogle Scholar
Rytwo, G., Lavi, R., Rytwo, Y., Monchase, H., Dultz, S., and König, T.N. (2013) Clarification of olive mill and winery wastewater by means of clay-polymer nanocomposites. Science of the Total Environment, 442, 134–142.CrossRefGoogle ScholarPubMed
Rytwo, G., Lavi, R., König, T.N., and Avidan, L. (2014) Direct relationship between electrokinetic surface-charge measurement of effluents and coagulant type and dose. Colloids and Interface Science Communications, 1, 27–30.CrossRefGoogle Scholar
Rytwo, G., Klein, T., Margalit, S., Mor, O., Naftaly, A., and Daskal, G. (2015) A continuous-flow device for photocatalytic degradation and full mineralization of priority pollutants in water. Desalination and Water Treatment, 57, 16424–16434.CrossRefGoogle Scholar
Rytwo, G., Chorsheed, L.L., Avidan, L., and Lavi, R. (2016) Three unusual techniques for the analysis of surface modification of clays and nanocomposites. Pp.73–86 in: Surface Modification of Clays and Nanocomposites (Beall, G., editor). CMS Workshop Lectures Series, 20, The Clay Minerals Society, Chantilly, Virginia, USA.Google Scholar
Salvador, F., Martin-Sanchez, N., Sanchez-Hernandez, R., Sanchez-Montero, M.J., and Izquierdo, C. (2015a) Regeneration of carbonaceous adsorbents. Part I: Thermal Regeneration. Microporous and Mesoporous Materials, 202, 259–276.CrossRefGoogle Scholar
Salvador, F., Martin-Sanchez, N., Sanchez-Hernandez, R., Sanchez-Montero, M.J., and Izquierdo, C. (2015b) Regeneration of carbonaceous adsorbents. Part II: Chemical, Microbiological and Vacuum Regeneration. Microporous and Mesoporous Materials, 202, 277–296.CrossRefGoogle Scholar
Sarkar, B., Xi, Y., Megharaj, M., Krishnamurti, G.S.R., and Naidu, R. (2010) Synthesis and characterisation of novel organopalygorskites for removal of p-nitrophenol from aqueous solution: Isothermal studies. Journal of Colloid and Interface Science, 350, 295–304.CrossRefGoogle ScholarPubMed
Sarkar, B., Xi, Y., Megharaj, M., Krishnamurti, G.S.R., Bowman, M., Rose, H., and Naidu, R. (2012) Bioreactive organoclay: A new technology for environmental remediation. Critical Reviews in Environmental Science and Technology, 42, 435–488.CrossRefGoogle Scholar
Schneider, J., Matsuoka, M., Takeuchi, M., Zhang, J., Horiuchi, Y., Anpo, M., and Bahnemann, D.W. (2014) Understanding TiO2 photocatalysis: Mechanisms and materials. Chemical Reviews, 114, 140919080959008.CrossRefGoogle ScholarPubMed
Scotti, R., Conzatti, L., D'Arienzo, M., Di Credico, B., Giannini, L., Hanel, T., Stagnaro, P., Susanna, A., Tadiello, L., and Morazzoni, F. (2014) Shape controlled spherical (0D) and rod-like (1D) silica nanoparticles in silica/styrene butadiene rubber nanocomposites: Role of the particle morphology on the filler reinforcing effect. Polymer, 55, 1497–1506.CrossRefGoogle Scholar
Semiat, R. (2000) Present and future. Water International, 25, 54–65.CrossRefGoogle Scholar
Shen, Y.-H. (2004) Phenol sorption by organoclays having different charge characteristics. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 232, 143–149.CrossRefGoogle Scholar
Sheng, G., Johnston, C.T., Teppen, B.J., and Boyd, S.A. (2001) Potential contributions of smectite clays and organic matter to pesticide retention in soils. Journal of Agricultural and Food Chemistry, 49, 2899–2907.CrossRefGoogle Scholar
Shenker, M., Harush, D., Ben-Ari, J., and Chefetz, B. (2011) Uptake of carbamazepine by cucumber plants–a case study related to irrigation with reclaimed wastewater. Chemosphere, 82, 905–10.CrossRefGoogle ScholarPubMed
Shtarker-Sasi, A., Castro-Sowinski, S., Matan, O., Kagan, T., Nir, S., Okon, Y., and Nasser, A.M. (2013) Removal of bacteria and cryptosporidium from water by micelle–montmorillonite complexes. Desalination and Water Treatment, 51, 7672–7680.CrossRefGoogle Scholar
Stöter, M., Biersack, B., Reimer, N., Herling, M., Stock, N., Schobert, R., and Breu, J. (2014) Ordered heterostructures of two strictly alternating types of nanoreactors. Chemistry of Materials, 26, 5412–5419.CrossRefGoogle Scholar
Stöter, M., Biersack, B., Rosenfeldt, S., Leitl, M.J., Kalo, H., Schobert, R., Yersin, H., Ozin, G.A., Förster, S., and Breu, J. (2015) Encapsulation of functional organic compounds in nanoglass for optically anisotropic coatings. Angewandte Chemie (International ed. in English), 54, 4963–4967.CrossRefGoogle ScholarPubMed
Sui, Q., Cao, X., Lu, S., Zhao, W., Qiu, Z., and Yu, G. (2015) Occurrence, sources and fate of pharmaceuticals and personal care products in the groundwater: A review. Emerging Contaminants, 1, 14–24.CrossRefGoogle Scholar
Sutzkover-Gutman, I. and Hasson, D. (2010) Feed water pretreatment for desalination plants. Desalination, 264, 289–296.CrossRefGoogle Scholar
Suwal, S. (2015) Water In Crisis–Spotlight Nepal. The Water Project. <> (accessed 30 July 2015).Google Scholar
Tang, P. and Raper, J. (2002) Modelling the settling behaviour of fractal aggregates–A review. Powder Technology, 123, 114–125.CrossRefGoogle Scholar
Tang, P., Greenwood, J., and Raper, J.A. (2002) A model to describe the settling behavior of fractal aggregates. Journal of Colloid and Interface Science, 247, 210–219.CrossRefGoogle Scholar
Theng, B.K.G., Churchman, G.J., Gates, W.P., and Yuan, G. (2008) Organically modified clays for pollutant uptake and environmental protection. Pp. 145–174 in: Soil Mineral Microbe–Organic Interactions. Springer, Berlin-Heidelberg.CrossRefGoogle Scholar
Thomas, D.N.N., Judd, S.J.J., and Fawcett, N. (1999) Flocculation modelling: a review. Water Research, 33, 1579–1592.CrossRefGoogle Scholar
Uddin, M.K. (2017) A review on the adsorption of heavy metals by clay minerals, with special focus on the past decade. Chemical Engineering Journal, 308, 438–462.CrossRefGoogle Scholar
UN World Water Development Report (2015) Water for a Sustainable World. Google Scholar
UNESCO (2006) Section 2: Changing Natural Systems, Chapter 4–The State of the Resource, Part 4: Matching Demands to Supply, p.146. 119–157 pp. .Google Scholar
UNESCO (2012) Increasing demand and climate change threatening world water resources says new UN World Water Development Report | United Nations Educational, Scientific and Cultural Organization. UNESCO Press Service. (accessed 16 August 2016).Google Scholar
Unuabonah, E.I. and Taubert, A. (2014) Clay–polymer nanocomposites (CPNs): Adsorbents of the future for water treatment. Applied Clay Science, 99, 83–92.CrossRefGoogle Scholar
Unuabonah, E.I., Günter, C., Weber, J., Lubahn, S., and Taubert, A. (2013) Hybrid Clay: A New Highly Efficient Adsorbent for Water Treatment. ACS Sustainable Chemistry & Engineering, 1, 966–973.CrossRefGoogle Scholar
Unuabonah, E.I., Adewuyi, A., Kolawole, M.O., Omorogie, M.O., Olatunde, O.C., Fayemi, S.O., Günter, C., Okoli, C.P., Agunbiade, F.O., and Taubert, A. (2017) Disinfection of water with new chitosan-modified hybrid clay composite adsorbent. Heliyon, 3, e00379.CrossRefGoogle Scholar
Unuabonah, E.I., Ugwuja, C.G., Omorogie, M.O., Adewuyi, A., and Oladoja, N.A. (2018) Clays for efficient disinfection of bacteria in water. Applied Clay Science, 151, 211–223.CrossRefGoogle Scholar
USACE. (2001) Engineering and Design ADSORPTION DESIGN GUIDE DG. P. in: Design Guide 1110-1-2. US Army Corps of Engineers.Google Scholar
Uyguner, C.S. and Bekbolet, M. (2009) Application of photocatalysis for the removal of natural organic matter in simulated surface and ground waters. Journal of Advanced Oxidation Technologies, 12, 87–92.CrossRefGoogle Scholar
Vahedi, A. and Gorczyca, B. (2010) Application of fractal dimensions to study the structure of flocs formed in lime softening process. Water Research, 45, 545–556.CrossRefGoogle Scholar
Vahedi, A. and Gorczyca, B. (2012) Predicting the settling velocity of flocs formed in water treatment using multiple fractal dimensions. Water Research, 46, 4188–4194.CrossRefGoogle ScholarPubMed
Voutchkov, N. (2010) Considerations for selection of seawater filtration pretreatment system. Desalination, 261, 354—-364.CrossRefGoogle Scholar
Wang, H., Wang, N., Wang, B., Zhao, Q., Fang, H., Fu, C., Tang, C., Jiang, F., Zhou, Y., Chen, Y., and Jiang, Q. (2016) Antibiotics in drinking water in Shanghai and their contribution to antibiotic exposure of school children. Environmental Science & Technology, 50, 2692–2699.CrossRefGoogle ScholarPubMed
Wang, L.K. and Shammas, N.K. (2007) Pressurized ozonation. Pp. 1–55 in: Advanced Physicochemical Treatment Technologies. Humana Press, Totowa, New Jersey, USA.CrossRefGoogle Scholar
Wang, L.K., Chen, J.P., and Ziegler, R.C. (2007) Irradiation. Pp. 107–134 in: Advanced Physicochemical Treatment Technologies. Humana Press, Totowa, New Jersey, USA.CrossRefGoogle Scholar
Weiner, E.R. (2008) Applications of Environmental Aquatic Chemistry: A Practical Guide. CRC Press, Boca Raton, Florida, USA, 436 pp.CrossRefGoogle Scholar
Werner, J.J., McNeill, K., and Arnold, WA. (2009) Photolysis of chlortetracycline on a clay surface. Journal of Agricultural and Food Chemistry, 57, 6932–6937.CrossRefGoogle Scholar
World Health Organization (2011) Pharmaceuticals in Drinking-water. Information Sheet WHO, Generva, Switzerland ().Google Scholar
Xu, S. and Boyd, SA. (1994) Cation exchange chemistry of hexadecyltrimethylammonium in a subsoil containing vermiculite. Soil Science Society of America Journal, 58, 1382–1391.CrossRefGoogle Scholar
Xu, S., Lu, H., Chen, L., and Wang, X. (2014) Molecularly imprinted TiO2 hybridized magnetic Fe3O4 nanoparticles for selective photocatalytic degradation and removal of estrone. RSC Advances, 4, 45266–45274.CrossRefGoogle Scholar
Yates, M., Martín-Luengo, M.A., Argomaniz, L.V., and Velasco, S.N. (2012) Design of activated carbon–clay composites for effluent decontamination. Microporous and Mesoporous Materials, 154, 87–92.CrossRefGoogle Scholar
Yuan, G. (2004) Natural and modified nanomaterials as sorbents of environmental contaminants. Journal of Environmental Science and Health, Part A, 39, 2661–2670.CrossRefGoogle ScholarPubMed
Yuan, G.D., Theng, B.K.G., Churchman, G.J., Gates, W.P., Theng, B.K.G., and Yuan, G.D. (2013) Clays and clay minerals for pollution control. Pp. 587–644 in: Handbook of Clay Science (Bergaya, F. and Lagaly, G., editors). Developments in Clay Science, Elsevier, Amsterdam.CrossRefGoogle Scholar
Zadaka, D., Mishael, Y.G., Polubesova, T., Serban, C., and Nir, S. (2007) Modified silicates and porous glass as adsorbents for removal of organic pollutants from water and comparison with activated carbons. Applied Clay Science, 36, 174–181.CrossRefGoogle Scholar
Zhao, H. and Vance, G.F. (1998) Sorption of trichloroethylene by organo-clays in the presence of humic substances. Water Research, 32, 3710–3716.CrossRefGoogle Scholar
Zhu, K., Jia, H., Wang, F., Zhu, Y., Wang, C., and Ma, C. (2017) Efficient removal of Pb(II) from aqueous solution by modified montmorillonite/carbon composite: Equilibrium, kinetics, and thermodynamics. Journal of Chemical & Engineering Data, 62, 333–340.CrossRefGoogle Scholar
Zhu, L., Chen, B., and Shen, X. (2000) Sorption of phenol, p-nitrophenol, and aniline to dual-cation organobentonites from water. Environmental Science & Technology, 34, 468–475.CrossRefGoogle Scholar
Zhu, R., Zhu, J., Ge, F., and Yuan, P. (2009) Regeneration of spent organoclays after the sorption of organic pollutants: A review. Journal of Environmental Management, 90, 3212–3216CrossRefGoogle ScholarPubMed
Zia, A. (2013) “80% of diseases are waterborne”. The Express Tribune. Pakistan.Google Scholar