Personal Research Database

Full Text: 2009\J Haz Mat171, 717.pdf

Abstract: A novel superabsorbent composite was synthesized by copolymerization reaction of partially neutralized acrylic acid (AA) on bentonite micropowder using N,N’-methylenebisacrylamide as a crosslinker and ammonium persulfate as an initiator in aqueous solution. The superabsorbent composite (SAC) was characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The water retention test of SAC was also performed. The water absorbency of SAC synthesized was found to be 352 and 110 g H₂Og^-1 in distilled water and 0.2% NaCl, respectively. Sorption capacity of SAC was investigated for heavy metal ions (HMI) using Langmuir and Freundlich model of adsorption. The maximum adsorption capacity (Q(m)) of HMI onto the bentonite-based SAC from their solution was 1666.67, 270.27, 416.67 and 222.22 mg g^-1 for Pb(II). Ni(II), Cd(II) and Cu(II), respectively. All results suggested that SAC offers excellent potential for HMI removal from contaminated water. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Acrylate), Adsorption, Adsorption Capacity, Aqueous, Aqueous-Solution, Behavior, Bentonite, Capacity, Clay, Composite, Copolymer, Cu²⁺, Elsevier, Freundlich, FTIR, Heavy Metal, Heavy-Metal Ions, Hydrogels, Metal, Metal Ions, Removal, Removal, SEM, Sorption, Spectroscopy, Superabsorbent, Swelling, Water

? Ahmad, R. (2009), Studies on adsorption of crystal violet dye from aqueous solution onto coniferous pinus bark powder (CPBP). Journal of Hazardous Materials, 171 (1-3), 767-773.

Full Text: 2009\J Haz Mat171, 767.pdf

Abstract: The present study shows that the coniferous pinus bark powder (CPBP) can be used as a potential adsorbent for the removal of crystal violet (basic dye) from aqueous solutions. Experiments were carried out as a function of contact time, concentration, temperature, pH and dosage. The amount of dye uptake was found to vary with increasing initial solution pH and maximum adsorption was observed at pH 8. The equilibrium was attained in 2 h. The amount of dye uptake (mg/g) was found to increase with increase in dye concentration and contact time. The % adsorption was found to decrease with increase in amount of adsorbent. The thermodynamic parameters were also calculated and the positive value of ΔH° indicates the endothermic nature of adsorption. The applicability of the three isotherm’s model for the present data follows the order: Langmuir>Temkin >Freundlich. The kinetics of crystal violet on to the adsorbent can be described well by pseudo-second order>Elovich>pseudo-first order equation. (c) 2009 Elsevier B.V. All rights reserved.

Keywords: Activated Carbon, Adsorbent, Adsorption, Adsorption Isotherms, Agricultural Waste, Aqueous Solution, Aqueous Solutions, Basic Dye, Brilliant-Blue FCF, Concentration, Coniferous Pinus Bark Powder, Crystal Violet, Data, De-Oiled-Soya, Desorption, Dye, Endothermic, Equilibrium, Function, Hazardous Dye, Hen Feathers, Kinetics, Malachite Green, Materials-Bottom Ash, Model, NOV, pH, Potential, Removal, Rights, Solution, Solutions, Temperature, Thermodynamic, Thermodynamic Parameters, Thermodynamics, Uptake, Value, Waste Materials

? Tang, Y.L., Guan, X.H., Wang, J.M., Gao, N.Y., McPhail, M.R. and Chusuei, C.C. (2009), Fluoride adsorption onto granular ferric hydroxide: Effects of ionic strength, pH, surface loading, and major co-existing anions. Journal of Hazardous Materials, 171 (1-3), 774-779.

Full Text: 2009\J Haz Mat171, 774.pdf

Abstract: Fluoride adsorption onto granular ferric hydroxide (GFH) was investigated using batch methods, under various ionic strength, pH,surface loading,and major co-existing anion conditions. Adsorption of fluoride on GFH included an initial fast adsorption phase followed by a slow adsorption phase. Within the pH range of 2-11, fluoride adsorption equilibrium was not affected by ionic strength, but was significantly affected by pH. Maximum adsorption was achieved in the pH range of 3-6.5. Under the same pH condition, fluoride adsorption followed the Freundlich isotherm, indicating that the GFH surface was heterogeneous. X-ray photoelectron spectroscopy (XPS) and attenuated total reflection-infrared (ATR-IR) spectroscopy data showed evidence for fluoride sorption on the GFH surface via inner-sphere complexation accompanying increased hydrogen bonding and surface hydroxylation. Major anions, including phosphate, bicarbonate, sulfate, and chloride, reduced fluoride adsorption in the following order: H₂PO₄^- > HCO₃^- > SO₄^2- > Cl^-. (c) 2009 Elsevier B.V. All rights reserved.

Keywords: Adsorption, Alumina, Aqueous-Solutions, Carbon, Complexation, Defluoridation, Drinking-Water, Elsevier, Equilibrium, Fluoride, Freundlich, Freundlich Isotherm, Goethite, Granular Ferric Hydroxide, Hydrogen, Ionic Strength, Isotherm, Membranes, Oxides, pH, Phosphate, Removal, Sorption, Spectroscopy, Sulfate, X-Ray Photoelectron, XPS

? Zheng, J.C., Feng, H.M., Lam, M.H.W., Lam, P.K.S., Ding, Y.W. and Yu, H.Q. (2009), Removal of Cu(II) in aqueous media by biosorption using water hyacinth roots as a biosorbent material. Journal of Hazardous Materials, 171 (1-3), 780-785.

Full Text: 2009\J Haz Mat171, 780.pdf

Abstract: Water hyacinth roots were employed as a biosorbent to remove Cu(II) in aqueous media. Nitrogen adsorption/desorption analysis revealed that the biosorbent was mesoporous with a relatively small surface area. Equilibrium biosorption isotherms showed that the water hyacinth roots possessed a high affinity and sorption capacity for Cu(II) with a monolayer sorption capacity of 22.7 mg g(-1) at initial pH 5.5. Kinetics study at different temperatures revealed that the sorption was a rapid and endothermic process. The activation energy for Cu(II) sorption was estimated to be 30.8 kJ mol^-1, which is typical of activated chemisorption processes. The sorption mechanism was investigated by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, effect of pH and calcium release. These analyses suggested that the biosorption mainly involved the ion exchange of Cu(II) with cations and complex formation with functional groups on the surface of the roots. All the results showed that water hyacinth roots are an alternative low-cost biosorbent for the removal of Cu(II) from aqueous media. (c) 2009 Elsevier B.V. All rights reserved.

Keywords: Activated Carbon, Activation, Activation Energy, Adsorption, Desorption, Alternative, Analyses, Analysis, Biomass Oedogonium sp, Biosorbent, Biosorption, Biosorption Isotherms, Calcium, Capacity, Chemisorption, Copper, Copper Adsorption, Cu(II), Endothermic, Energy, Equilibrium, FT-IR, Functional Groups, Heavy-Metals, Infrared Spectroscopy, Ion Exchange, Ion-Exchange, Ions, Isotherm, Isotherms, Kinetics, Low Cost, Mechanism, Media, Mesoporous, Monolayer, NOV, pH, Release, Removal, Rights, Small, Sorption, Sorption Capacity, Sorption Mechanism, Spectroscopy, Surface, Surface Area, Water, Water Hyacinth, Water Hyacinth Roots, Water-Hyacinth, X-Ray, X-Ray Photoelectron Spectroscopy, XPS, Zero Charge

? Anwar, J., Shafique, U., Salman, M., Waheed-uz-Zamana, Anwar, S. and Anzano, J.M. (2009), Removal of Chromium(III) by using coal as adsorbent. Journal of Hazardous Materials, 171 (1-3), 797-801.

Full Text: 2009\J Haz Mat171, 797.pdf

Abstract: The adsorption of Cr(III) by two different coal varieties from Lakhra and Thar coalfields (Pakistan) have been studied in batch mode. The effect of adsorbent dose, pH, contact time and agitation speed on the adsorption of Cr(III) by both the coals were investigated. Adsorption equilibrium was achieved in 40-50 min. The Langmuir, Freundlich and Temkin adsorption isotherms were used to elucidate the observed sorption phenomena. The maximum Cr(III) removal was 2.61 mg of Cr(III) per gram of LC (Lakhra coal) and 2.55 mg of Cr(III) per gram of TC (Thar coal) as evaluated from Langmuir isotherm. The heat of sorption was in the range 3.75-3.87 kJ/mol as evaluated from Temkin isotherm. Best results were obtained at pH > 5. It is proposed that low rank coals of Pakistan can be used for removal of toxic metals like Cr(Ill) from industrial effluents/waste waters. (c) 2009 Elsevier B.V. All rights reserved.

Keywords: Adsorption, Adsorption, Adsorption Isotherms, Chromium, Coal, Elsevier, Equilibrium, Freundlich, Freundlich Isotherm, Isotherm, Isotherms, Langmuir Isotherm, Metals, pH, Removal, Sorption, Temkin Isotherm, Toxic Metals

? Liu, F., Luo, X.G., Lin, X.Y., Liang, L.L. and Chen, Y. (2009), Removal of copper and lead from aqueous solution by carboxylic acid functionalized deacetylated konjac glucomannan. Journal of Hazardous Materials, 171 (1-3), 802-808.

Full Text: 2009\J Haz Mat171, 802.pdf

Abstract: Carboxylic acid functionalized deacetylated konjac glucomannan was synthesized by free radical graft copolymerization of methyl acrylate(MA)and methyl methacrylate (MMA) onto the backbone of deacetylated konjac glucomannan with subsequent chemical activation of the ester groups in the side chains of the resulting graft copolymer by sodium hydroxide. Effects of sodium hydroxide concentration and hydrolyzed time on the conversion of ester groups into carboxylic acid groups were studied. A comprehensive adsorption study of Cu²⁺ and Pb²⁺ ions from aqueous solution was also conducted regarding the effects of initial pH, adsorbent dosage, time, and initial concentration. The new konjac glucomannan adsorbent offered high removal efficiency, fast adsorption rate and high uptake capacity for Cu²⁺ and Pb²⁺ ions. The maximum removal efficiency at pH 5.0 was found to 98% for Cu²⁺ and 99% for Pb²⁺ ions. The kinetic data were fitted well to pseudo-second-order model. The maximum uptake capacity of Cu²⁺ and Pb²⁺ ions onto carboxylic acid functionalized deacetylated konjac glucomannan was found to 64.5 mg g^-1 and 191.3 mg g^-1, respectively. The isotherm adsorption data was well described by the Langmuir isotherm model. (c) 2009 Elsevier B.V. All rights reserved.

Keywords: Acrylic-Acid, Activation, Adsorbent, Adsorbent Dosage, Adsorbents, Adsorption, Adsorption Rate, Aqueous Solution, Capacity, Carboxylic, Cellulose, Chemical, Chemical Activation, Competitive Removal, Concentration, Copolymer, Copolymerization, Copper, Cu²⁺, Data, Deacetylated Konjac Glucomannan, Efficiency, Free Radical, Graft, Graft Copolymerization, Graft-Copolymerization, Grafting, Heavy-Metal Ions, Hydroxide, Ions, Isotherm, Isotherm Model, Kinetic, Langmuir, Langmuir Isotherm, Langmuir Isotherm Model, Lead, Methyl Methacrylate, Model, NOV, Pb²⁺, pH, Pseudo Second Order, Pseudo-Second-Order, Pseudo-Second-Order Model, Removal, Removal Efficiency, Rights, Sodium, Solution, Sorbents, Starch, Uptake

? Solangi, I.B., Memon, S. and Hanger, M.I. (2009), Removal of fluoride from aqueous environment by modified Amberlite resin. Journal of Hazardous Materials, 171 (1-3), 815-819.

Full Text: 2009\J Haz Mat171, 815.pdf

Abstract: Fluoride in drinking water above permissible level is responsible for human being affected by skeletal fluorosis. In this study, Amberlite XAD-4 (TM) has been modified by introducing amino group onto the aromatic ring for its application in fluoride remediation. Characterization of the modified resin was made by, FT-IR and elemental analysis (CHNS) techniques. The pH 9 was optimum value for quantitative sorption of fluoride in both batch and column experiments. The desorption of fluoride was achieved by using 10% HCl. The batch and column sorption studies of fluoride with modified resin were carried out to evaluate sorption isotherms too. Thus equation isotherms such as Langmuir, Freundlich, and Dubinin-Radushkevich (D-R) were Successfully used to model the experimental data. The sorption capacity of modified Amberlite XAD-4 resin was found as 5.0410^-3 mol g^-1. From the D-R isotherm parameters, it has been evaluated that the uptake of fluoride by modified resin occurs through ion exchange adsorption mechanism. The study will contribute toward the removal of fluoride from the aqueous environment as well as in the field of analytical and environmental chemistry. (c) 2009 Elsevier B.V. All rights reserved.

Keywords: Adsorption, Adsorption Isotherms, Adsorption Mechanism, Amberlite Resin, Aqueous, Behavior, Capacity, Chitosan Beads, Desorption, Dialysis, Elsevier, Equilibrium, Fluoride, Fluoride Remediation, Freundlich, FT-IR, FTIR, Ion Chromatography, Ion Exchange, Ion Exchange Resin, Ion-Exchanger, Isotherm, Isotherms, Mechanism, pH, Preconcentration, Remediation, Removal, Separation, Solid Phase Extraction, Sorption, Thar Desert, Water

? Chio, C.P., Lin, M.C. and Liao, C.M. (2009), Low-cost farmed shrimp shells could remove arsenic from solutions kinetically. Journal of Hazardous Materials, 171 (1-3), 859-864.

Full Text: 2009\J Haz Mat171, 859.pdf

Abstract: The purpose of this study was to explore the ability of shrimp shell to remove arsenic (As) from aqueous solutions by experimental and modeling analyses. The shells of two species of farmed shrimp, black tiger shrimp (Penaeus monodon) and white shrimp (Litopenaeus vannamei), were chosen to be the sorbents. The results indicate that sorption capacities of black tiger shrimp and white shrimp shells were estimated to be 8.1×10^-3 to 5.0×10^-1 and 7.8×10^-3 to 2.4×10^-1 mg g^-1, respectively. Results show that the sorption capacities of the shell of black tiger shrimp did not significantly differ from those of white shrimp by through analysis of variance ANOVA (F = 1.50, n = 18, P>0.05). This study found that Langmuir and Fruendlich isotherm models described the adsorption processes well (r² > 0.90).The Langmuir-based maximum adsorption capacity was estimated to be 0.125-0.126 mg g(-1), whereas the Fruendlich-based adsorption capacities ranged from 0.105 to 0.124 mg g(-1). Model analysis based on pseudo-second-order kinetics reveals that sorption capacity of shrimp shell increases with the initial As concentration and retention time in water. Based on isotherm and kinetic analyses, the sorption capacity of shell of black tiger shrimp is slight higher but insignificant than that of shell of white shrimp for As removal from solution. A combination of experiments and modeling suggests that shrimp shell, as a waste material, could be utilized potentially for the removal of As from an aqueous medium. Although the As-removal capacity of shrimp shell was lower than those of natural and chemical sorbents, using shrimp shells as sorbents is less expensive and could increase the additional benefit of shrimp products. (c) 2009 Elsevier B.V. All rights reserved.

Keywords: Adsorption, Adsorption Capacities, Adsorption Capacity, Adsorption Isotherm, Adsorption Kinetics, Analyses, Analysis, Anova, Aqueous Medium, Aqueous Solutions, Aqueous-Solution, Arsenic, Biomass, Biosorption, Blackfoot Disease Area, Capacity, Chanos-Chanos, Chemical, Concentration, Experimental, Experiments, Heavy-Metals, Isotherm, Isotherm Models, Kinetic, Kinetics, Langmuir, Low Cost, Low-Cost, Milkfish, Model, Modeling, Models, Natural, NOV, Pseudo Second Order, Pseudo Second Order Kinetics, Pseudo-Second-Order, Pseudo-Second-Order Kinetics, Purpose, Removal, Retention, Rights, Shrimp Shell, Solution, Solutions, Sorbents, Sorption, Sorption Capacity, Species, Taiwan, Tiger, Waste, Water

? Akar, T., Tosun, İ., Kaynak, Z., Kavas, E., Incirkus, G. and Akar, S.T. (2009), Assessment of the biosorption characteristics of a macro-fungus for the decolorization of Acid Red 44 (AR44) dye. Journal of Hazardous Materials, 171 (1-3), 865-871.

Full Text: 2009\J Haz Mat171, 865.pdf

Abstract: This study focuses on the possible use of macro-fungus Agaricus bisporus to remove Acid Red 44 dye from aqueous solutions. Batch equilibrium studies were carried out as a function of pH, biomass amount, contact time and temperature to determine the decolorization efficiency of biosorbent. The highest dye removal yield was achieved at pH 2.0. Equilibrium occurred within about 30 min. Biosorption data were successfully described by Langmuir isotherm model and the pseudo-second-order kinetic model. The maximum monolayer biosorption capacity of biosorbent material was found as 1.19×10^-4 mol g^-1. Thermodynamic parameters indicated that the biosorption of Acid Red 44 onto fungal biomass was spontaneous and endothermic in nature. Fourier transform infrared spectroscopy and scanning electron microscopy were used for the characterization of possible dye-biosorbent interaction and surface structure of biosorbent, respectively. Finally the proposed biosorbent was successfully used for the decolorization of Acid Red 44 in synthetic wastewater conditions. (c) 2009 Elsevier B.V. All rights reserved.

Keywords: Agaricus Bisporus, Agaricus-Macrosporus, Aqueous Solutions, Aqueous-Solution, Azo-Dye, Biomass, Biosorbent, Biosorption, Biosorption Characteristics, Capacity, Characteristics, Characterization, Data, Decolorization, Dye, Dye Removal, Efficiency, Electron Microscopy, Endothermic, Equilibrium, Equilibrium Studies, Function, Fungal Biomass, Heavy-Metals, Infrared Spectroscopy, Interaction, Isotherm, Isotherm Model, Kinetic, Kinetic Model, Kinetics, Langmuir, Langmuir Isotherm, Langmuir Isotherm Model, Macro-Fungi, Model, Modified Rice Straw, Monolayer, NOV, pH, Pseudo Second Order, Pseudo-Second-Order, Pseudo-Second-Order Kinetic Model, Removal, Rights, Scanning Electron Microscopy, Solutions, Sorption, Spectroscopy, Spontaneous, Structure, Surface, Surface Structure, Temperature, Thermodynamic, Thermodynamic Parameters, Thuja-Orientalis, Waste-Water Treatment, Wastewater

? Calero, M., Hernáinz, F., Blázquez, G., Tenorio, G. and Martín-Lara, M.A. (2009), Study of Cr(III) biosorption in a fixed-bed column. Journal of Hazardous Materials, 171 (1-3), 886-893.

Full Text: 2009\J Haz Mat171, 886.pdf

Abstract: This research analyzes the potential use of the olive stone as a low-cost biosorbent for Cr(III) from aqueous solutions in a continuous system. First, experiments were carried out in fixed-bed column to test the influence of various parameters on breakthrough and saturation time. The breakthrough and saturation time increase with the decrease of the flow rate. The same effect is shown when the bed depth is increased. The olive stone sorption capacity, q(e), increases as the inlet Cr(III) concentration increases until a value close to 0.800 mg/g is reached, then q(e) remains constant. Column data obtained at different conditions were described using the Adams-Bohart, Thomas, Yoon and Nelson, and Dose-Response models. The breakthrough curve prediction by the Adams-Bohart and Dose-Response models were found to be very satisfactory. In particular, the Adams-Bohart model can be used to represent the initial region of breakthrough curve, whereas the Dose-Response model is the one which best reproduces the whole curve for all the inlet Cr(III) concentrations used. Finally, a study of pH evolution was carried out. The pH increases at the beginning, subsequently decreasing as time passes until practically reaching the initial value. (c) 2009 Elsevier B.V. All rights reserved.

Keywords: Adsorption, Aqueous, Aqueous-Solutions, Biomass, Biosorbent, Biosorption, Breakthrough Curve, Breakthrough Curves, Capacity, Chromium(III), Continuous System, Cr(VI), Elsevier, Fixed Bed Column, Fixed-Bed, Fixed-Bed Column, Heavy-Metal Removal, Immobilized Activated-Sludge, Ions, Models, Olive Stone, Packed-Bed, pH, Research, Solutions, Sorption, System, Waste-Water

? Ioannou, Z. and Simitzis, J. (2009), Adsorption kinetics of phenol and 3-nitrophenol from aqueous solutions on conventional and novel carbons. Journal of Hazardous Materials, 171 (1-3), 954-964.

Full Text: 2009\J Haz Mat171, 954.pdf

Abstract: Carbonaceous adsorbents prepared from olive stones biomass and novolac resin, as well as a commercial activated carbon for comparison reasons, have been examined for the removal of phenol and 3-nitrophenol from aqueous solutions. All carbonaceous adsorbents; have been characterized by SEM-EDAX analysis and mercury porosimetry. The experimental data were examined according to the following kinetic models: pseudo first order, pseudo second order. Natarajan and Khalaf, Elovich, power function equations and intraparticle diffusion. By plotting the amount of adsorbate (phenol or 3-nitrophenol) adsorbed per unit mass of adsorbent b(t), versus the square root of time, four regions can be distinguished (A, B, C and D). By applying all the previously described models it is concluded that: (a) the intraparticle diffusion model is valid for the B and C region, whereas macropore diffusion and mesopore diffusion, respectively, take place. The pore diffusion coefficient, D for each carbonaceous material was calculated and indicated that the adsorption is controlled by diffusion, (b) the power model for the adsorption of phenol on each of the three carbonaceous materials is acceptable only for the C region and (c) the pseudo second order for the adsorption of 3-nitrophenol on each of the three carbonaceous materials is acceptable for the C region. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: 3-Nitrophenol, Activated Carbon, Adsorbent, Adsorbents, Adsorption, Adsorption Kinetics, Agricultural Waste, Analysis, Aqueous Solutions, Basic Dye, Biomass, Carbon, Carbonaceous Material, Carbonaceous Materials, Carbons, Comparison, Conventional, Data, Diffusion, Diffusion Coefficient, Diffusion Model, Elovich, Equilibrium, Experimental, Fir Wood, First, First Order, Function, Intraparticle Diffusion, Intraparticle Diffusion Model, Kinetic, Kinetic Models, Kinetics, Liquid-Phase Adsorption, Mercury, Mesopore, Methylene-Blue, Model, Models, NOV, Olive Stones, Phenol, Pore Diffusion, Power, Pseudo First Order, Pseudo Second Order, Pseudo-First-Order, Pseudo-Second-Order, Removal, Resin, Rights, Second Order, Second-Order, Solutions, Water

? Asta, M.P., Cama, J., Martínez, M. and Giménez, J. (2009), Arsenic removal by goethite and jarosite in acidic conditions and its environmental implications. Journal of Hazardous Materials, 171 (1-3), 965-972.

Full Text: 2009\J Haz Mat171, 965.pdf

Abstract: Schwertmannite (Fe₈O₈(OH)_5.5(SO₄)_1.25), jarosite (KFe₃(SO₄)₂(OH)₆) and goethite (FeOOH) control natural attenuation of arsenic in acid mine drainage (AMD) impacted areas. Batch experiments were conducted to examine the sorption capacity of synthetic goethite and synthetic jarosite at highly acidic pH (1.5-2.5), at two ionic strengths (0.02-0.15 mol dm^-3, NaCl) and at sulphate concentrations in the range of 510^-3 to 2.810^-1 mol dm^-3. In the absence of competitive effects of other anions, K-jarosite presents better removal efficiency than goethite for As(V). The maximum sorption capacity is estimated to be 1.210^-4 and 7.010^-6 mol m^-2 for jarosite and goethite. respectively, under similar experimental conditions. The variation of arsenic sorbed on goethite as a function of the equilibrium arsenic concentration in solution fits a non-competitive Langmuir isotherm. In the case of K-jarosite, sorption data could not fit a Langmuir or Freundlich isotherm since sulphate-arsenate anion exchange is probably the sorption mechanism. Ionic strength and pH have little effect on the sorption capacity of goethite and jarosite in the small range of pH studied. The presence of sulphate, which is the main anion in AMD natural systems, has a negative effect on arsenic removal since sulphate competes with arsenate for surface sorption sites. Moreover, mobilization of arsenic in the transformation of schwertmannite to jarosite or goethite at pH 2-3 is proposed since the sorption capacities of goethite and K-jarosite are considerably lower than those reported for schwertmannite. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Acid Mine Drainage, Adsorption, Amd, Arsenate, Arsenic, Arsenic Removal, Capacity, Co-Sorption, Elsevier, Equilibrium, Ferrihydrite, Freundlich, Freundlich Isotherm, Goethite, Ionic Strength, Iron, Isotherm, Jarosite, Langmuir Isotherm, Mechanism, Mine Drainage, Mineralogy, pH, Precipitation, Removal, Schwertmannite, Sorption, Sulfate, Water

? Sarı, A. and Tuzen, M. (2009), Equilibrium, thermodynamic and kinetic studies on aluminum biosorption from aqueous solution by brown algae (Padina pavonica) biomass. Journal of Hazardous Materials,