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Last data updates: 19 June 2015 Ho, Y.S., Wase, D.A.J. and Forster, C.F. (1996), Kinetic studies of competitive heavy metal adsorption by sphagnum moss peat. Environmental Technology, 17 (1), 71-77. Document type: Article Language: English Cited References: 17 Times Cited: 317 Times self cited: 43 Abstract: Much of the work on the adsorption of metals by low-cost, natural biosorbents has focussed on the uptake of single metals. In practice, wastewaters are polluted with multiple metals. In addition, the kinetics of adsorption, which are important in the design of treatment systems, have largely been neglected. This paper describes the results of an examination into the adsorption by peat of copper and nickel from both mono and bi-solute systems. These showed that, in general, pore diffusion appeared to be the rate-controlling step and that the presence of ‘contaminant’ copper ions reduced the binding of nickel. In fact, the best interpretation which could be placed on the data was that the behaviour of nickel was unusual. The results also showed that the kinetics of adsorption were best described by a second-order expression rather than a first-order model. Keywords: Peat, Adsorption, Heavy Metals, Kinetics, Aqueous-Solutions, Waste-Water, Removal, Adsorbents Addresses: Univ Birmingham, Sch Civil Engn, Birmingham B15 2TT, W Midlands, England Univ Birmingham, Sch Chem Engn, Birmingham B15 2TT, W Midlands, England 1. Li, H.L., Wang, X.F., You, W. and He, D.L. (2015), Adsorption of Pb(II) from Aqueous 2. Solution by Mesoporous MCM-48. Journal of Dispersion Science and Technology, 36 (3), 393-401. Ghaedi, M., Ansari, A., Bahari, F., Ghaedi, A.M. and Vafaei, A. (2015), A hybrid artificial neural network and particle swarm optimization for prediction of removal of hazardous dye brilliant green from aqueous solution using zinc sulfide nanoparticle loaded on activated 3. carbon. Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 137), 1004-1015. Chieng, H.I., Lim, L.B.L. and Priyantha, N. (2015), Enhancing adsorption capacity of toxic malachite green dye through chemically modified breadnut peel: equilibrium, thermodynamics, 4. 5. kinetics and regeneration studies. Environmental Technology, 36 (1), 86-97. Hu, X.J., Liu, Y.G., Wang, H., Zeng, G.M., Hu, X., Guo, Y.M., Li, T.T., Chen, A.W., Jiang, L.H. and Guo, F.Y. (2015), Adsorption of copper by magnetic graphene oxide-supported beta-cyclodextrin: Effects of pH, ionic strength, background electrolytes, and citric acid. Chemical Engineering Research & Design, 93), 675-683. Asiri, A.M., Akhtar, K., Seo, J., Marwani, H.M., Kim, D., Han, H. and Khan, S.B. (2015), Development of Polymer Based Nanocomposites as a Marker of Cadmium in Complex Matrices. Journal of Nanomaterials , . 6. 7. 8. 9. Zhao, X.H., Luo, Y., He, C.H., Zong, P.F., Zhang, K., Kebwaro, J.M., Li, K., Fu, B.F. and Zhao, Y.L. (2015), Evaluation of permutite for removal of radiocobalt from nuclear wastewater. Journal of Radioanalytical and Nuclear Chemistry, 303 (1), 837-844. Alslaibi, T.M., Abustan, I., Ahmad, M.A. and bu Foul, A. (2014), Kinetics and equilibrium adsorption of iron (II), lead (II), and copper (II) onto activated carbon prepared from olive stone waste. Desalination and Water Treatment, 52 (40-42), 7887-7897. Gu, L.N., He, X.M. and Wu, Z.Y. (2014), Mesoporous hydroxyapatite: Preparation, drug adsorption, and release properties. Materials Chemistry and Physics, 148 (1-2), 153-158. Kalpakli, Y., Toygun, S., Konecoglu, G. and Akgun, M. (2014), Equilibrium and kinetic study on the adsorption of basic dye (BY28) onto raw Ca-bentonite. Desalination and Water Treatment, 52 (37-39), 7389-7399. 10. Zhuang, F.Q., Tan, R.Q., Shen, W.F., Zhang, X.P., Xu, W. and Song, W.J. (2014), Magnetic Strontium Hydroxyapatite Microspheres for the Efficient Removal of Pb(II) from Acidic Solutions. 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(2006), Trivalent chromium removal from wastewater using low cost activated carbon derived from agricultural waste material and activated carbon fabric cloth. Journal of Hazardous Materials, 135 (1-3), 280-295. 209. Mohanty, K., Naidu, J.T., Meikap, B.C. and Biswas, M.N. (2006), Removal of crystal violet from wastewater by activated carbons prepared from rice husk. Industrial & Engineering Chemistry Research, 45 (14), 5165-5171. 210. Lodeiro, P., Barriada, J.L., Herrero, R. and De Vicente, M.E.S. (2006), The marine macroalga Cystoseira baccata as biosorbent for cadmium(II) and lead(II) removal: Kinetic and equilibrium studies. Environmental Pollution, 142 (2), 264-273. 211. Zandvoort, M.H., van Hullebusch, E.D., Fermoso, F.G. and Lens, P.N.L. (2006), Trace metals in anaerobic granular sludge reactors: Bioavailability and dosing strategies. Engineering in Life Sciences, 6 (3), 293-301. 212. Mohan, D., Pittman, C.U. and Steele, P.H. (2006), Single, binary and multi-component adsorption of copper and cadmium from aqueous solutions on Kraft lignin - a biosorbent. Journal of Colloid and Interface Science, 297 (2), 489-504. 213. Herrero, R., Cordero, B., Lodeiro, P., Rey-Castro, C. and de Vicente, M.E.S. (2006), Interactions of cadmium(II) and protons with dead biomass of marine algae Fucus sp. Marine Chemistry, 99 (1-4), 106-116. 214. Horsfall, M., Abia, A.A. and Spiff, A.I. (2006), Kinetic studies on the adsorption of Cd2+, Cu2+ and Zn2+ ions from aqueous solutions by cassava (Manihot sculenta Cranz) tuber bark waste. Bioresource Technology, 97 (2), 283-291. 215. Lodeiro, P., Herrero, R. and de Vicente, M.E.S. (2006), Thermodynamic and kinetic aspects on the biosorption of cadmium by low cost materials: A review. Environmental Chemistry, 3 (6), 400-418. 216. Saxena, A. (2006), Seasonal pattern of metal bioaccumulation and their toxicity on Sphagnum squarrosum. Journal of Environmental Biology, 27 (1), 71-75. 217. Lodeiro, P., Cordero, B., Barriada, J.L., Herrero, R. and de Vicente, M.E.S. (2005), Biosorption of cadmium by biomass of brown marine macroalgae. Bioresource Technology, 96 (16), 1796-1803. 218. Oliveira, E.A., Montanher, S.F., Andrade, A.D., Nobrega, J.A. and Rollemberg, M.C. (2005), Equilibrium studies for the sorption of chromium and nickel from aqueous solutions using raw rice bran. Process Biochemistry, 40 (11), 3485-3490. 219. Wang, W.M. and Fthenakis, V. (2005), Kinetics study on separation of cadmium from tellurium in acidic solution media using ion-exchange resins. Journal of Hazardous Materials, 125 (1-3), 80-88. 220. Mohan, D., Singh, K.P., Sinha, S. and Gosh, D. (2005), Removal of pyridine derivatives from aqueous solution by activated carbons developed from agricultural waste materials. Carbon, 43 (8), 1680-1693. 221. Mohan, D., Singh, K.P. and Ghosh, D. (2005), Removal of alpha-picoline, beta-picoline, and gamma-picoline from synthetic wastewater using low cost activated carbons derived from coconut shell fibers. Environmental Science & Technology, 39 (13), 5076-5086. 222. Ong, S.A., Toorisaka, E., Hirata, M. and Hano, T. (2005), Treatment of azo dye Orange II in aerobic and anaerobic-SBR systems. Process Biochemistry, 40 (8), 2907-2914. 223. Ong, S.A., Toorisaka, E., Hirata, M. and Hano, T. (2005), The behavior of Ni(II), Cr(III), and Zn(II) in biological wastewater treatment process. Acta Hydrochimica et Hydrobiologica, 33 (2), 95-103. 224. Ho, Y.S. (2005), Comment on "Two-stage batch sorber design using second-order kinetic model for the sorption of metal complex dyes onto pine sawdust" by Ozacar,M and Sengyl,IA. Biochemical Engineering Journal, 23 (3), 291-292. 225. Ozacar, M. (2005), Response to comment on "Two-stage batch sorber design using second-order kinetic model for the sorption of metal complex dyes onto pine sawdust" by Dr. Y.-S. Ho, Biochem. Eng. J. 21 (2004) 39-45. Biochemical Engineering Journal, 23 (3), 293. 226. Ho, Y.S. and Ofmaja, A.E. (2005), Effects of calcium competition on lead sorption by palm kernel fibre. Journal of Hazardous Materials, 120 (1-3), 157-162. 227. Ho, Y.S. (2005), Comment on 'Biosorption of cadmium using the fungus Aspergillus niger'. by Barros, L.M., Macedo, G.R., Duarte, M.M.L., Silva, E.R and Lobato, A.K.C.L. Brazilian Journal of Chemical Engineering, 22 (2), 319-322. 228. Chubar, N.I., Kanibolotskyy, V.A., Strelko, V.V., Gallios, G.G., Samanidou, V.F., Shaposhnikova, T.O., Milgrandt, V.G. and Zhuravlev, I.Z. (2005), Adsorption of phosphate ions on novel inorganic ion exchangers. Colloids and Surfaces A-Physicochemical and Engineering Aspects, 255 (1-3), 55-63. 229. Chang, Y.C. and Chen, D.G.H. (2005), Adsorption kinetics and thermodynamics of acid dyes on a carboxymethylated chitosan-conjugated magnetic nano-adsorbent. Macromolecular Bioscience, 5 (3), 254-261. 230. Rubin, E., Rodriguez, P., Herrero, R., Cremades, J., Barbara, I. and de Vicente, M.E.S. (2005), Removal of Methylene Blue from aqueous solutions using as biosorbent Sargassum muticum: an invasive macroalga in Europe. Journal of Chemical Technology and Biotechnology, 80 (3), 291-298. 231. Ho, Y.S. (2005), Comment on "Adsorption of naphthalene on zeolite from aqueous solution" by C.F Chang, C.Y. Chang, K.H. Chen, W.T. Tsai, J.L. Shie, Y.H. Chen. Journal of Colloid and Interface Science, 283 (1), 274-277. 232. Ho, Y.S. (2005), Comment on "Nitrate removal from aqueous solution by adsorption onto various materials" by N. Ozturk, T.E. Bekta. Journal of Hazardous Materials, 118 (1-3), 253-254. 233. Gulnaz, O. (2005), Reply to comment of Dr. Ho on "J. Hazard. Mater. 108 (2004) 183-188". Journal of Hazardous Materials, 118 (1-3), 265. 234. Ho, Y.S. (2005), Comments on "Chitosan functionalized with 2[-bis-(pyridylmethyl) aminomethyl]4-methyl-6-formyl-phenol: equilibrium and kinetics of copper(II) adsorption". Polymer, 46 (5), 1451-1452. 235. Horsfall, M. and Spiff, A.I. (2005), Effect of metal ion concentration on the biosorption of Pb2+ and Cd2+ by Caladium bicolor (wild cocoyam). African Journal of Biotechnology, 4 (2), 191-196. 236. Psareva, T.S., Zakutevskyy, O.I., Chubar, N.I., Strelko, V.V., Shaposhnikova, T.O., Carvalho, J.R. and Correia, M.J.N. (2005), Uranium sorption on cork biomass. Colloids and Surfaces A-Physicochemical and Engineering Aspects, 252 (2-3), 231-236. 237. Moazed, H. and Viraraghavan, T. (2005), Use of organo-clay/anthracite mixture in the separation of oil from oily waters. Energy Sources, 27 (1-2), 101-112. 238. Thirunavukkarasu, O.S., Viraraghavan, T., Subramanian, K.S., Chaalal, O. and Islam, M.R. (2005), Arsenic removal in drinking water - Impacts and novel removal technologies. Energy Sources, 27 (1-2), 209-219. 239. Saliba, R., Gauthier, H. and Gauthier, R. (2005), Adsorption of heavy metal ions on virgin and chemically-modified lignocellulosic materials. Adsorption Science & Technology, 23 (4), 313-322. 240. Ozcan, A., Sahin, M. and Ozcan, A.S. (2005), Adsorption of nitrate ions onto sepiolite and surfactant-modified sepiolite. Adsorption Science & Technology, 23 (4), 323-333. 241. Mehta, S.K. and Gaur, J.P. (2005), Use of algae for removing heavy metal ions from wastewater: Progress and prospects. Critical Reviews in Biotechnology, 25 (3), 113-152. 242. Aksu, Z. and Kabasakal, E. (2005), Adsorption characteristics of 2,4-dichlorophenoxyacetic acid (2,4-D) from aqueous solution on powdered activated carbon. Journal of Environmental Science and Health Part B-Pesticides Food Contaminants and Agricultural Wastes, 40 (4), 545-570. 243. Ho, Y.S. (2005), Comment on "Removal of heavy metals from aqueous solution by carbon nanotubes: adsorption equilibrium and kinetics" by Li, Y.H., Di, Z.C., Luan, Z. K., Ding, J., Zuo, H., Wu, X. Q., Xu, C. L. and Wu, D. H. Journal of Environmental Sciences-China, 17 (1), 175-176. 244. Luan, Z.K. (2005), Response to comment on "Removal of heavy metals from aqueous solution by carbon nanotubes: adsorption equilibrium and kinetics". Journal of Environmental Sciences-China, 17 (1), 176. 245. Yan, C.Z., Wang, S.R., Zeng, A.Y., Jin, X.C., Xu, Q.J. and Zhao, J.Z. (2005), Equilibrium and kinetics of copper(II) biosorption by Myriophyllum spicatum L. Journal of Environmental Sciences-China, 17 (6), 1025-1029. 246. Griffith, C.S., Luca, V., Yee, P. and Sebesta, F. (2005), Separation of cesium and strontium from acidic radioactive waste simulants using a microporous tungstate/polyacrylonitrile (PAN) composite adsorbent. Separation Science and Technology, 40 (9), 1781-1796. 247. Zheng, S.K., Yang, Z.F., Jo, D.H., Park, Y.H. and Ho, Y.S. (2005), Comment on "Removal of chlorophenols from groundwater by chitosan sorption". Water Research, 39 (1), 264-268. 248. Ozcan, A.S., Erdem, B. and Ozcan, A. (2004), Adsorption of Acid Blue 193 from aqueous solutions onto Na-bentonite and DTMA-bentonite. Journal of Colloid and Interface Science, 280 (1), 44-54. 249. van Hullebusch, E.D., Zandvoort, M.H. and Lens, P.N.L. (2004), Nickel and cobalt sorption on anaerobic granular sludges: kinetic and equilibrium studies. Journal of Chemical Technology and Biotechnology, 79 (11), 1219-1227. 250. Lodeiro, P., Cordero, B., Grille, Z., Herrero, R. and de Vicente, M.E.S. (2004), Physicochemical studies of cadmium(II) biosorption by the invasive alga in europe, Sargassum muticum. Biotechnology and Bioengineering, 88 (2), 237-247. 251. Ho, Y.S. (2004), Comment on "Sorption of basic dyes from aqueous solution by activated sludge" [J. Hazard. Mater. 108 (2004) 183-188]. Journal of Hazardous Materials, 114 (1-3), 241-245. 252. Ho, Y.S. (2004), Comments on "collagen-fiber-immobilized tannins and their adsorption of Au(III). Industrial & Engineering Chemistry Research, 43 (19), 6265. 253. Rengaraj, S., Kim, Y., Joo, C.K. and Yi, J. (2004), Response to "Comment on 'Removal of copper from aqueous solution by aminated and protonated mesoporous aluminas: kinetics and equilibrium'". Journal of Colloid and Interface Science, 277 (1), 255. 254. Ozcan, A.S. and Ozcan, A. (2004), Adsorption of acid dyes from aqueous solutions onto acid-activated bentonite. Journal of Colloid and Interface Science, 276 (1), 39-46. 255. Azizian, S. (2004), Kinetic models of sorption: a theoretical analysis. Journal of Colloid and Interface Science, 276 (1), 47-52. 256. Ho, Y.S. (2004), Comment on "Removal of copper from aqueous solution by aminated and protonated mesoporous aluminas: kinetics and equilibrium," by S. Rengaraj, Y. Kim, C.K. Joo, and J. Yi. Journal of Colloid and Interface Science, 276 (1), 255-258. 257. Ho, Y.S. (2004), "Kinetic modeling and equilibrium studies during cadmium biosorption by dead Sargassum sp biomass" by Cruz, C.C.V.., da Costa, A.C.A., Henriques, C.A., Luna, A.S. Bioresource Technology, 93 (3), 321-323. 258. Purkait, M.K., Gusain, D.S., DasGupta, S. and De, S. (2004), Adsorption behavior of chrysoidine dye on activated charcoal and its regeneration characteristics by using different surfactants. Separation Science and Technology, 39 (10), 2419-2440. 259. Ho, Y.S. (2004), Cadmium removal from aqueous solutions by chitin: kinetic and equilibrium studies. Water Research, 38 (12), 2962-2964. 260. Ho, Y.S. (2004), Pseudo-isotherms using a second order kinetic expression constant. Adsorption-Journal of the International Adsorption Society, 10 (2), 151-158. 261. Ho, Y.S. (2004), Comment on "Arsenic removal using mesoporous alumina prepared via a templating method". Environmental Science & Technology, 38 (11), 3214-3215. 262. Kim, Y.H., Kim, C.M., Choi, I., Rengaraj, S. and Yi, J.H. (2004), Response to comment on "Arsenic removal using mesoporous alumina prepared via a templating method''. Environmental Science & Technology , 38 (11), 3216. 263. Keskinkan, O., Goksu, M.Z.L., Basibuyuk, M. and Forster, C.F. (2004), Heavy metal adsorption properties of a submerged aquatic plant (Ceratophyllum demersum). Bioresource Technology, 92 (2), 197-200. 264. Zhou, P.J., Lin, J., Shen, H., Li, T., Song, L.R., Shen, Y.W. and Liu, Y.D. (2004), Kinetic studies on the combined effects of lanthanum and cerium on the growth of Microcystis aeruginosa and their accumulation by M-aeruginosa. Bulletin of Environmental Contamination and Toxicology, 72 (4), 711-716. 265. Ho, Y.S., Chiu, W.T., Hsu, C.S. and Huang, C.T. (2004), Sorption of lead ions from aqueous solution using tree fern as a sorbent. Hydrometallurgy, 73 (1-2), 55-61. 266. Ho, Y.S. (2004), Comment on "An alternative Avrami equation to evaluate kinetic parameters of the interaction of H9(II) with thin chitosan membranes, by E.C.N. Lopes, F.S.C. dos Anjos, E.F.S. Vieira, and A.R. Cestari. Journal of Colloid and Interface Science, 272 (1), 249-250. 267. Ho, Y.S. and Wang, C.C. (2004), Pseudo-isotherms for the sorption of cadmium ion onto tree fern. Process Biochemistry, 39 (6), 759-763. 268. Vazquez, M.D., Wappelhorst, O. and Markert, B. (2004), Determination of 28 elements in aquatic moss Fontinalis antipyretica Hedw. and water from the upper reaches of the River Nysa (Cz, D), by ICP-MS, ICP-OES and AAS. Water Air and Soil Pollution, 152 (1-4), 153-172. 269. Fiol, N., Poch, J. and Villaescusa, I. (2004), Chromium(VI) uptake by grape stalks wastes encapsulated in calcium alginate beads: equilibrium and kinetics studies. Chemical Speciation and Bioavailability, 16 (1-2), 25-33. 270. Cordero, B., Lodeiro, P., Herrero, R. and de Vicente, M.E.S. (2004), Biosorption of Cadmium by Fucus spiralis. Environmental Chemistry, 1 (3), 180-187. 271. Ho, Y.S., Bulut, Y. and Tez, Z. (2004), 'Removal of heavy metal ions by modified sawdust of walnut' by Bulut, Y and Tez, Z. Fresenius Environmental Bulletin, 13 (4), 370-373. 272. Petroni, S.L.G., Pires, M.A.F. and Munita, C.S. (2004), Use of radiotracer in adsorption studies of copper on peat. Journal of Radioanalytical and Nuclear Chemistry, 259 (2), 239-243. 273. Taty-Costodes, V.C., Fauduet, H., Porte, C. and Delacroix, A. (2003), Removal of Cd(II) and Pb(II) ions, from aqueous solutions, by adsorption onto sawdust of Pinus sylvestris. Journal of Hazardous Materials, 105 (1-3), 121-142. 274. Yan, G.Y. and Viraraghavan, T. (2003), Heavy-metal removal from aqueous solution by fungus Mucor rouxii. Water Research, 37 (18), 4486-4496. 275. Keskinkan, O., Goksu, M.Z.L., Yuceer, A., Basibuyuk, M. and Forster, C.F. (2003), Heavy metal adsorption characteristics of a submerged aquatic plant (Myriophyllum spicatum). Process Biochemistry, 39 (2), 179-183. 276. Ho, Y.S. (2003), Affinity dye-ligand poly(hydroxyethyl methacrylate)/chitosan composite membrane for adsorption lysozyme and kinetic properties G. Bayramoglu, M. Yilmaz, M.Y. Arica. Biochemical Engineering Journal, 15 (1), 77-78. 277. Arica, M.Y. (2003), In reaction to the comment by Dr. Y.-S. Ho on our publication "Affinity dye-ligand poly(hydroxyethylmethacrylate/chitosan composite membrane for adsorption lysozyme and kinetic properties, Biochemical Engineering Journal 13 (2003) 35-45". Biochemical Engineering Journal, 15 (1), 79-80. 278. Balkaya, N. and Cesur, H. (2003), Influence of operating parameters on lead removal from wastewater by phosphogypsum. Environmental Technology, 24 (6), 727-733. 279. Ho, Y.S. (2003), Untitled. Journal of Chemical Technology and Biotechnology, 78 (6), 724. 280. Ho, Y.S. (2003), Comment on "Adsorption of fluoride, phosphate, and arsenate ions on a new type of ion exchange fiber," by RX Liu, J.L. Guo, and HX Tang. Journal of Colloid and Interface Science, 262 (1), 307-308. 281. Basibuyuk, M. and Forster, C.F. (2003), An examination of the adsorption characteristics of a basic dye (Maxilon Red BL-N) on to live activated sludge system. Process Biochemistry, 38 (9), 1311-1316. 282. Thirunavukkarasu, O.S., Viraraghavan, T. and Subramanian, K.S. (2003), Arsenic removal from drinking water using granular ferric hydroxide. Water Sa, 29 (2), 161-170. 283. Sweileh, J.A. (2003), Sorption of trace metals on human hair and application for cadmium and lead pre-concentration with flame atomic absorption determination. Analytical and Bioanalytical Chemistry, 375 (5), 450-455. 284. Viraraghavan, T. and Moazed, H. (2003), Removal of oil from water by bentonite. Fresenius Environmental Bulletin, 12 (9), 1092-1097. 285. Zhou, P.J., Lin, J., Shen, H., Li, T., Song, L.R., Shen, Y.W. and Liu, Y.D. (2003), Kinetic studies on the effects of rare earth elements (REES) on the growth of Microcystis and their accumulation by Microcystis. Fresenius Environmental Bulletin, 12 (11), 1328-1333. 286. Mathialagan, T. and Viraraghavan, T. (2003), Adsorption of cadmium from aqueous solutions by vermiculite. Separation Science and Technology, 38 (1), 57-76. 287. Mathialagan, T., Viraraghavan, T. and Cullimore, D.R. (2003), Adsorption of cadmium from aqueous solutions by edible mushrooms (Agaricus bisporus and Lentinus edodes). Water Quality Research Journal of Canada, 38 (3), 499-514. 288. Fu, Y.Z. and Viraraghavan, T. (2002), Removal of Congo Red from an aqueous solution by fungus Aspergillus niger. Advances in Environmental Research, 7 (1), 239-247. 289. Mathialagan, T. and Viraraghavan, T. (2002), Adsorption of cadmium from aqueous solutions by perlite. Journal of Hazardous Materials, 94 (3), 291-303. 290. Mehta, S.K., Tripathi, B.N. and Gaur, J.P. (2002), Enhanced sorption of Cu2+ and Ni2+ by acid-pretreated Chlorella vulgaris from single and binary metal solutions. Journal of Applied Phycology, 14 (4), 267-273. 291. Ho, Y.S. (2002), Comment on "Removal of Ni2+ and Cu2+ ions from aqueous solutions on to lignite-based carbons", by S.E. Samra. Adsorption Science & Technology, 20 (2), 199-201. 292. Mehta, S.K. and Gaur, J.P. (2001), Characterization and optimization of Ni and Cu sorption from aqueous solution by Chlorella vulgaris. Ecological Engineering, 18 (1), 1-13. 293. Singh, S., Rai, B.N. and Rai, L.C. (2001), Ni (II) and Cr (VI) sorption kinetics by Microcystis in single and multimetallic system. Process Biochemistry, 36 (12), 1205-1213. 294. Mehta, S.K. and Gaur, J.P. (2001), Concurrent sorption of Ni2+ and Cu2+ by Chlorella vulgaris from a binary metal solution. Applied Microbiology and Biotechnology, 55 (3), 379-382. 295. Fu, Y.Z. and Viraraghavan, T. (2001), Removal of CI Acid Blue 29 from an aqueous solution by Aspergillus niger. Aatcc Review, 1 (1), 36-40. 296. Day, M. (2000), Automobile shredder residue: a waste or a resource? Environment Conscious Materials - Ecomaterials, ), 215-224. 297. Fu, Y.Z. and Viraraghavan, T. (2000), Removal of a dye from an aqueous solution by the fungus Aspergillus niger. Water Quality Research Journal of Canada, 35 (1), 95-111. 298. Marques, P.A., Pinheiro, H.M., Teixeira, J.A. and Rosa, M.F. (1999), Removal efficiency of Cu2+, Cd2+, Pb2+ by waste brewery biomass: pH and cation association effects. Desalination, 124 (1-3), 137-144. 299. Kapoor, A., Viraraghavan, T. and Cullimore, D.R. (1999), Removal of heavy metals using the fungus Aspergillus niger. Bioresource Technology, 70 (1), 95-104. 300. Lau, P.S., Lee, H.Y., Tsang, C.C.K., Tam, N.F.Y. and Wong, Y.S. (1999), Effect of metal interference, pH and temperature on Cu and Ni biosorption by Chlorella vulgaris and Chlorella miniata. Environmental Technology, 20 (9), 953-961. 301. Ho, Y.S. and Mckay, G. (1999), Pseudo-second order model for sorption processes. Process Biochemistry, 34 (5), 451-465. 302. Kleiman, I.D. and Cogliatti, D.H. (1998), Chromium removal from aqueous solutions by different plant species. Environmental Technology, 19 (11), 1127-1132. 303. Quek, S.Y., Wase, D.A.J. and Forster, C.F. (1998), The use of sago waste for the sorption of lead and copper. Water Sa, 24 (3), 251-256. 304. Chakravarty, R., Prasad, G. and Raupainwar, D.C. (1998), Static removal of copper (II) from aqueous solutions by hematite. Environmental Technology, 19 (3), 315-322. 305. Quek, S.Y., Al-Duri, B., Wase, D.A.J. and Forster, C.F. (1998), Coir as a biosorbent of copper and lead. Process Safety and Environmental Protection, 76 (B1), 50-54. 306. Mohammad, A. and Najar, M. (1997), Physico-chemical adsorption treatments for minimization of heavy metal contents in water and wastewaters. Journal of Scientific & Industrial Research, 56 (9), 523-539.