Personal Research Database

Full Text: 2010\J Haz Mat173, 710.pdf

Abstract: A novel inorganic-organic composite material silica gel microspheres encapsulated by imidazole functionalized polystyrene (SG-PS-azo-IM) has been synthesized and characterized. This composite material was used to investigate the adsorption of Cr(III), Mn(II), Fe(Ill), Ni(II), Cu(II), Zn(II), Hg(II), Pb(II), Pd(II), Pt(II), Ag(I), and Au(III) from aqueous solutions, and the research results displayed that SG-PS-azo-IM has the highest adsorption capacity for Au(III). Langmuir and Freundlich isotherm models were applied to analyze the experimental data, the best interpretation for the experimental data was given by the Langmuir isotherm equation, and the maximum adsorption capacity for Au(III) is 1.700 mmol/g. The adsorption selectivity, the dynamic adsorption and desorption properties of SC-PS-azo-IM for Au(Ill) have also been studied. The results showed that SC-PS-azo-IM had excellent adsorption for Au(III) in four binary ions system, especially in the systems of Au(III)-Zn(II) and Au(III)-Cu(II), and almost Au(III) could be desorbed with the eluent solution of 0.5% thiourea in 1 mol/L HCl. Moreover, this novel composite material was used to preconcentrate Au(III) before its determination by flame atomic adsorption spectrometry. In the initial concentration range of 0.10-0.20 mu g/mL, multiple of enrichment could reach 5.28. Thus, silica gel encapsulated by polystyrene coupling with imidazole (SG-PS-azo-IM) is favorable and useful for the removal of transition metal ions, and the high adsorption capacity makes it a good promising candidate material for Au(III) removal. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Acid, Adsorption, Adsorption Capacity, Adsorption Of Heavy Metals Ions, Aqueous Solutions, Carbon Nanotubes, Composite Materials, Cr(III), Cu(II), Desorption, Dispersion Polymerization, Encapsulation, Encapsulation, Freundlich, Freundlich Isotherm, Gold(III), Hg(II), Imidazole Functionalized Polystyrene, Isotherm, Isotherm Models, Langmuir, Langmuir and Freundlich Isotherm, Langmuir Isotherm, Metal Ions, Mn(II), Particles, Pb(II), Polar Media, Polystyrene, Removal, Research, Silica, Silica Gel Matrix, Sorption, System, Transition Metal Ions

? Vanek, A., Chrastny, V., Komarek, M., Galuskova, I., Drahota, P., Grygar, T., Tejnecky, V. and Drabek, O. (2010), Thallium dynamics in contrasting light sandy soils: Soil vulnerability assessment to anthropogenic contamination. Journal of Hazardous Materials, 173 (1-3), 717-723.

Full Text: 2010\J Haz Mat173, 717.pdf

Abstract: The influence of different soil conditions and the presence of LMWOA (Low Molecular Weight Organic Acids) on anthropogenic Tl dynamics were discussed in this study. A shift from the “labile” to the residual fraction during the ageing was identified, inclicating Tl incorporation into stable phases (e.g., illite and/or amorphous silicates). The increased water-soluble Tl concentration (1.8-fold. in maximum) after the split application of LMWOA (simulating root exudation) was observed in all soils; partial dissolution of relatively “insoluble” Tl-bearing phases (silicates and eventually oxides) in the presence of LMWOA is suggested. Thermodynamic modeling showed that Tl mobilization in the presence of citric and oxalic acids was indirect and could be attributed to complexation of major elements (Ca, Mg, Al) originating from the dissolution of various soil phases. On the contrary, H+-promoted dissolution by acetic acid was assumed as the predominant mechanism of Tl mobilization. Manganese(III,IV) oxides, illite and probably amorphous silicates were evaluated as the dominant phases responsible for Tl retention in the soils. In carbonate-rich soils, Tl coprecipitation with the newly formed carbonates seems to be an important factor influencing Tl release. Therefore, we suggest data on CEC, pH(ZPC) and soil mineralogy to be critical for assessment of Tl behavior in soil systems. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Dissolution, Fractions, Hyperaccumulator Plants, Key Factor, Lmwoa, Manganese, Mobility, Modeling, Organic-Acids, Oxides, Phytoextraction, Retention, Rhizosphere, Silicates, Soil, Soils, Sorption, Thallium, Thermodynamic

? Wang, W., Zhou, M.H., Jin, Z.H. and Li, T.L. (2010), Reactivity characteristics of poly(methyl methacrylate) coated nanoscale iron particles for trichloroethylene remediation. Journal of Hazardous Materials, 173 (1-3), 724-730.

Full Text: 2010\J Haz Mat173, 724.pdf

Abstract: The unstable characteristic of nanoscale zerovalent iron (NZVI) has been a drawback in practical application, despite the expectation of an enhanced reactivity. It has been ever-increasing interests to maintain the NZVI stability in air without significant reactivity sacrifice. This study demonstrated a novel method of coating NZVI particles with poly(methyl methacrylate)(PMMA), which protected the core iron nanoparticles from oxidation in air and enhanced their dispersion stability in organic solvents. The reactivity studies on trichloroethene (TCE) reduction showed that the PMMA coated nanoscale zerovalent iron (PNZVI) particles were capable of effectively reducing TCE. The main roles of PMMA on the dechlorination reactions were confirmed to be sorption enhancement, competitive sorption and corrosion inhibition. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Corrosion, Dechlorination, Emulsion Polymerization, Metal Nanoparticles, Microemulsion, Nanoiron, Nanoparticles, Nanoscale Zerovalent Iron, Oxidation, Poly(Methyl Methacrylate), Polymerization, Reduction, Remediation, Sorption, Stability, TCE, Transport, Trichloroethene, Trichloroethylene, Water, Zero-Valent Iron, Zerovalent Iron

? Can, O.T. and Bayramoglu, M. (2010), The effect of process conditions on the treatment of benzoquinone solution by electrocoagulation. Journal of Hazardous Materials, 173 (1-3), 731-736.

Full Text: 2010\J Haz Mat173, 731.pdf

Abstract: The present study provides an electrocoagulation (EC) process for the removal of p-benzoquinone (BQ) from aqueous solution using aluminium as anode and stainless steel as cathode materials. Experiments carried out to investigate the effects of solution pH and conductivity, current density, time, BQ concentration on the removal efficiency of the process and the adsorption capacity of aluminium hydroxide electrocoagulant flocs. The results show that pH 7.5 seems to be optimum for high removal of BQ near 90% at typical operating conditions such as 20 A/m(2) current density and 20 min operating time. The competing reduction of BQ to hydroquinone (HQ) accompanying the H+ reduction at the cathode and low removal extent of HQ by electrocoagulant flocs decreases the performance of the EC process. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Adsorption, Adsorption Capacity, Aluminium, Aluminium Electrode, Aluminium Hydroxide Floc, Aluminum Electrodes, Electrochemical Treatment, Electrocoagulation, Flotation, Iron, Operating Conditions, P-Benzoquinone, pH, Pollutants, Removal, Separation, Treatment, Waste-Water, Wastewaters

? El-Naas, M.H., Al-Zuhair, S. and bu Alhaija, M. (2010), Reduction of COD in refinery wastewater through adsorption on date-pit activated carbon. Journal of Hazardous Materials, 173 (1-3), 750-757.

Full Text: 2010\J Haz Mat173, 750.pdf

Abstract: Experiments were carried out to evaluate the batch adsorption of COD from petroleum refinery wastewater on a locally prepared date-pit activated carbon (DP-AC), and its adsorption effectiveness was compared to that of commercially available BDH activated carbon (BDH-AC). Adsorption equilibrium and kinetic data were determined for both adsorbents and fitted to several adsorption isotherm and kinetics models, respectively. The Langmuir monolayer isotherm fitted well the equilibrium data of COD on both adsorbents: whereas, the kinetics data were best fitted by the pseudo-second order model. Modeling of the controlling mechanisms indicated that both intrinsic kinetics and mass transfer contributed to controlling the adsorption process. Mass transfer seemed to be the dominant mechanism at low COD content, while intrinsic kinetics dominates at high concentrations. in general, the adsorption effectiveness of locally prepared DP-AC was proven to be comparable to that of BDH-AC. Therefore, DP-AC can be utilized as an effective and less expensive adsorbent for the reduction of COD in refinery wastewater. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Activated Carbon, Adsorbent, Adsorption, Adsorption Equilibrium, Adsorption Isotherm, Aqueous-Solutions, Batch Adsorption, By-Products, COD, COD Reduction, Controlling Mechanism, Copper, Date-Pit, Effectiveness, Equilibrium, Heavy-Metal Biosorption, Ions, Isotherm, Kinetic, Kinetics, Mass Transfer, Mechanism, Mechanisms, Methylene-Blue, Model, Modeling, Petroleum Refinery, Phenol, Pseudo-Second Order, Pseudo-Second-Order, Reduction, Removal, Thermal Regeneration, Wastewater

? Parida, K.M. and Pradhan, A.C. (2010), Removal of phenolic compounds from aqueous solutions by adsorption onto manganese nodule leached residue. Journal of Hazardous Materials, 173 (1-3), 758-764.

Full Text: 2010\J Haz Mat173, 758.pdf

Abstract: Manganese nodule leached residue is a good adsorbent. Adsorption of phenol (PhOH) on water washed manganese nodule leached residue (WMNLR), waste materials from manganese nodules processing plant, has been investigated. The adsorbent (WMNLR) used for the removal of phenolic compounds were characterized by EDX, FTIR. SEM and BET surface area measurement before and after the adsorption process. Adsorption experiments were carried out to study the effect of various parameters like adsorbent dose, pH, adsorbate concentration, reaction time, temperature and calcination temperature. WMNLR calcined at 400 degrees C showed highest adsorption capacity. The equilibrium adsorption data for phenol was analyzed by using Langmuir isotherm model. The maximum adsorption of phenol was obtained at pH 3 (about 95% for adsorbent dose 1 g, L and 30 mg, L adsorbate concentration). The increase in percentage of adsorption with increase in temperature indicates that adsorption is endothermic in nature. The pseudo-second-order kinetics was followed in the adsorption process. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Adsorbent, Adsorption, Bagasse Fly-Ash, Capacity, Chlorophenols, Edx, Endothermic, Equilibrium, FTIR, Isotherm, Kinetics, Kinetics, Langmuir Isotherm, Measurement, Model, pH, Phase, Phenol, Plant, Pseudo-Second-Order, Red Mud, Removal, SEM, Sorption, Sugar-Industry, System, Technology, Waste-Water, WMNLR

? Gómez, J., Alcántara, M.T., Pazos, M. and Sanromán, M.A. (2010), Remediation of polluted soil by a two-stage treatment system: Desorption of phenanthrene in soil and electrochemical treatment to recover the extraction agent. Journal of Hazardous Materials, 173 (1-3), 794-798.

Full Text: 2010\J Haz Mat173, 794.pdf

Abstract: In this study, the feasibility of a two-stage treatment process for the remediation of soil contaminated with phenanthrene as a model polycyclic aromatic hydrocarbon (PAH) has been assessed at laboratory scale. The initial stage of the process involved contacting contaminated soil with a solution of Tween 80 to enhance the desorption of phenanthrene from soil. In order to simulate a flushing process this initial stage was carried out in a washing packed-bed soil column. At the optimised conditions the total phenanthrene removal attained a value of almost 65% after 3 days. The second stage of the suggested treatment involved regeneration of the washing solution via phenanthrene degradation. The use of an electrochemical treatment was proposed for surfactant recovery and degradation of contaminants present in the solution collected. This oxidation was accomplished via an electrochemical cell by using graphite as electrode material. The phenanthrene was almost totally degraded in 3 days, reaching a degradation of about 96%. In addition, a test in which this regenerated solution was employed in the washing process was carried out in shake flask and washing column. The results demonstrate that selective degradation of pollutants by electrochemical treatment is potentially effective in reusing surfactant in another polluted soil treatment. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Activated Carbon, Adsorption, Contaminated Soil, Degradation, Desorption, Electrochemical Treatment, Oxidation, PAHs, PAHs, Phenanthrene, Recycled Surfactant, Regeneration, Remediation, Removal, Soil, Solubilization, Stage, Surfactant, System, Treatment, Washing, Water

? Sánchez-Martín, J., González-Velasco, M., Beltrán-Heredia, J., Gragera-Carvajal, J. and Salguero-Fernández, J. (2010), Novel tannin-based adsorbent in removing cationic dye (Methylene Blue) from aqueous solution. Kinetics and equilibrium studies. Journal of Hazardous Materials, 174 (1-3), 9-16.

Full Text: 2010\J Haz Mat174, 9.pdf

Abstract: Natural tannin-based adsorbent has been prepared on the basis of the gelification of Quebracho bark extract. The resulting product, Quebracho Tannin Get (QTG) was tested as cationic dye adsorbent with Methylene Blue (MB). Kinetics of adsorption process were studied out and a period of 15 days was determined for reaching equilibrium. The influences of pH and temperature were evaluated. As pH or temperature raise q capacity of QTG increases. Theoretical modelization of dye-QTG adsorption was carried out by multiparametric adjustment according to Langmuir’s hypothesis. Values of the k(l1), k(l2) and activation energies were calculated. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Activated Carbon, Activation, Adsorbent, Adsorption, Adsorption Mechanism, Aqueous Solution, Capacity, Cationic Dye, Condensed-Tannin, Dye, Dye Removal, Equilibrium, Equilibrium Studies, Gelification, Kinetics, Mass-Spectrometry, MB, Metal-Ions, Methylene Blue, Modelization, Natural Adsorbents, Oxidation Processes, pH, Pinus-pinaster Bark, Quebracho, Rights, Solution, Sorption, Tannin, Temperature, Textile Effluent, Waste

? Zhou, D.M., Wang, Y.J., Wang, H.W., Wang, S.Q. and Cheng, J.M. (2010), Surface-modified nanoscale carbon black used as sorbents for Cu(II) and Cd(II). Journal of Hazardous Materials, 174 (1-3), 34-39.

Full Text: 2010\J Haz Mat174, 34.pdf

Abstract: Commercial carbon blacks often have low adsorption capacity for metal ions. Surface modification of them by appropriate physical and chemical treatments could improve their absorption capacities, and hence extend their environmental application. A surface-modified nanoscale carbon black was prepared by oxidizing the carbon black with 65% HNO3. Batch experiments showed that the adsorption quantities of Cu(II) or Cd(II) on this modified carbon black (MCB) were significantly increased compared with those on the parent one, and the maximum adsorption quantities of Cu(II) and Cd(II) on the MCB were 438 and 282 mmol kg(-1), respectively. The desorption percentages of Cu(II) or Cd(II) from the MCB increased with the increasing quantities initially adsorbed. In the binary system of Cu(II) and Cd(II), these two metal ions exhibited competition on the MCB, preferential for Cu(II). It could be concluded that the MCB had very good adsorption properties for the metal ions, and could be applied in the purification of wastewater containing such metal ions. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Adsorption, Adsorption Capacity, Aqueous-Solution, Batch Experiments, Binding, Carbon Black, Cd(II), Chemical Treatments, Competitive Adsorption, Competitive Adsorption, Cu(II), Desorption, Fibers, Heavy-Metal Ions, Metal Ions, Nanotubes, Oxidized Activated Carbon, Pb(II), Phosphoric-Acid, Single-Component, Surface Modification, System, Wastewater

? Chatterjee, S., Das, S.K., Chakravarty, R., Chakrabarti, A., Ghosh, S. and Guha, A.K. (2010), Interaction of malathion, an organophosphorus pesticide with Rhizopus oryzae biomass. Journal of Hazardous Materials, 174 (1-3), 47-53.

Full Text: 2010\J Haz Mat174, 47.pdf

Abstract: Adsorption of malathion on Rhizopus oryzae biomass (ROB) with special reference to binding mechanism has been described. ROB has been found to adsorb similar to 85% of malathion from its aqueous solution as against 47-68% by other fungal biomasses. Hydrogen ion concentration does not influence the adsorption of malathion by ROB which follows Langmuir-Freundlich dual equilibrium isotherm model (r(2) = 0.998). Both physical and chemical interactions are responsible for binding of malathion on ROB. Scanning electron micrographs and EDXA spectra exhibit adsorption of the pesticide on cell surface of ROB. Studies with cell surface polysaccharides show that chitosan through its amine groups contributes largely in the adsorption of malathion. Extraction of lipids from ROB decreases its adsorption capacity to the extent of 36.37-94.02%, depending on the polarity of the solvent. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Activated Carbon, Adsorption, Adsorption, Adsorption Capacity, Aqueous-Solutions, Biomass, Cell Wall Components, Chitosan, Equilibrium, Extraction, Fly-Ash, Interaction, Isotherm, Low-Cost Adsorbents, Malathion, Microbial Biomass, Organic Pollutants, Physicochemical Interaction, Removal, Rhizopus Oryzae, Rhodamine-B, Waste-Water

? Brito, S.M.D., Andrade, H.M.C., Soares, L.F. and de Azevedo, R.P. (2010), Brazil nut shells as a new biosorbent to remove methylene blue and indigo carmine from aqueous solutions. Journal of Hazardous Materials, 174 (1-3), 84-92.

Full Text: 2010\J Haz Mat174, 84.pdf

Abstract: The adsorption of methylene blue and indigo carmine, respectively a basic and an acid dye. was studied on raw Brazil nut shells. The dye removal from solution by BNS was governed by: (i) polarization effects between the colored ions and the surface sites, leading to physisorbed species due to weak electrostatic forces and (II) diffusion limitations affecting the kinetic parameters. Thermodynamic studies showed that the adsorption of methylene blue and of indigo carmine was spontaneous and exothermic occurring with entropy decrease. H-0 values confirmed the physical nature of the adsorption processes. The adsorption followed the Langmuir model and pseudo-second order kinetics over the entire range of tested concentrations but the prorocess was controlled by intraparticle diffusion. The maximal uptakes were 7.81 mg g^-1, for methylene blue, and 1.09 mg g^-1 for indigo carmine, at room temperature. These results indicate that Brazil nut shells may be useful as adsorbent either for basic or acid dyes. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Acid Dye, Acid Dyes, Adsorbent, Adsorption, Adsorption-Isotherm, Aqueous Solutions, Banana Pith, Biosorbent, Biosorption, Brazil, Color Removal, Copper Ions, Diffusion, Dye, Dye Adsorption, Dye Adsorption, Dye Removal, Dyes, Entropy, Exothermic, General Treatment, Intraparticle Diffusion, Ions, Kinetic, Kinetic Parameters, Kinetics, Langmuir, Langmuir Model, Low-Cost Adsorbents, Malachite Green, Methylene Blue, Model, Physical, Pseudo Second Order, Pseudo Second Order Kinetics, Pseudo-Second Order, Pseudo-Second Order Kinetics, Pseudo-Second-Order, Range, Removal, Rice Husk Ash, Rights, Room Temperature, Solution, Solutions, Species, Surface, Temperature, Textile Effluent, Thermodynamic, Waste-Water, Wastewater Treatment, Wheat-Straw

? Delgado-Moreno, L., Peña, A. and Almenbdros, G. (2010), Contribution by different organic fractions to triazines sorption in Calcaric Regosol amended with raw and biotransformed olive cake. Journal of Hazardous Materials, 174 (1-3), 93-99.

Full Text: 2010\J Haz Mat174, 93.pdf

Abstract: A soil, olive cake, compost and vermicompost of olive cake, were subjected to sequential laboratory extraction to progressively remove water-soluble, lipid and alkali-soluble (humic-type) fractions. Sorption experiments with triazines were carried out with non-amended and amended soil and with soil residues in the intermediate stages during the laboratory removal of the different organic fractions. Herbicide sorption in soil amended with olive cake was between two and three times higher than sorption in composted substrates. In non-amended soil, the removal of humic and fulvic acids led to a decrease of triazines sorption indicating the importance of these fractions in the sorption of these pesticides. The greater triazines sorption in soil amended with olive cake could be associated with the high concentration of water-soluble substances. In contrast, olive cake lipids did not favour the sorption of the more hydrophobic herbicides as indicated by the fact that the sorbed amount increased 30-40% when this fraction was removed. No significant (P > 0.05) differences in K-oc values were found in soils amended with compost and vermicompost in the course of the progressive removal of the different organic fractions, indicating triazine sorption was related more with the total amount of organic matter than with its chemical composition. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Adsorption, Adsorption-Desorption, Atrazine, Biochemical Parameters, Carbon, Chemical Composition, Compost Maturity, Fulvic Acids, Herbicides, Matter, Mill Wastes, Olive Waste, Organic Amendment, Organic Matter Fraction, Pesticides, Removal, Sewage-Sludge, Soil, Soils, Sorption, Triazine, Waste-Water

? Bao, N., Wei, Z.T., Ma, Z.H., Liu, F. and Yin, G.B. (2010), Si-doped mesoporous TiO₂ continuous fibers: Preparation by centrifugal spinning and photocatalytic properties. Journal of Hazardous Materials, 174 (1-3), 129-136.

Full Text: 2010\J Haz Mat174, 129.pdf

Abstract: TiO2 continuous fibers were prepared by a sol-gel method combined with centrifugal spinning without any template or binder polymer. The fibers were characterized using XRD, FT-IR, SEM, N-2 adsorption-desorption, and UV-vis DRS. The addition of silica was a crucial factor for obtaining long fibers because of the formation of Ti-O-Si networks. The effects of dopant contents and heat treatment temperatures were studied. It was found that the proper addition of silica into titania could improve the surface texture and enhance the thermal stability and crystal stability. When Si/Ti molar ratio was 0.15, mesoporous TiO2 fibers with a BET surface area up to 127.7 m(2) g(-1) were obtained after heat treatment at 700 degrees C. It displayed the highest photoactivity of all, and the degradation rate of X-3B in aqueous solution reached 99.6% after 75 min under UV irradiation. Furthermore, the degradation rate and the mineralization rate of X-3B were 94.7% and 58.9% after 3 h under solar irradiation, respectively. In addition, it was worthwhile to mention that the degradation efficiency was also more than 90% after 6 cycles. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Centrifugal Spinning, Continuous Fiber, Degradation, Fabrication, Fibers, FTIR, Mesoporous, Mixed Oxides, Performance, Phase, Preparation, SEM, Si-Doped, Silica, Sol-Gel, Sol-Gel Method, Suspensions, TiO₂, TiO₂, TiO₂, Titania, Titanium-Dioxide Fibers, Treatment, UV, XRD

? Yao, Z.Y., Qi, J.H. and Wang, L.H. (2010), Equilibrium, kinetic and thermodynamic studies on the biosorption of Cu(II) onto chestnut shell. Journal of Hazardous Materials, 174 (1-3), 137-143.

Full Text: 2010\J Haz Mat174, 137.pdf

Abstract: The biosorption of Cu(II) onto chestnut shell, a residue of the food processing industry, in a batch adsorber has been studied. Equilibrium isotherms, kinetic data, and thermodynamic parameters have been evaluated. Equilibrium data agreed well with Langmuir isotherm and Redlich-Peterson isotherm models. The adsorption capacity of chestnut shell for Cu(II) was determined with the Langmuir model and was found to be 12.56 mg g^-1 at 293 K. The kinetic data were found to follow the pseudo-second-order model. Intra-particle diffusion is not the sole rate-controlling factor. Gibbs free energy was spontaneous for all interactions, and the adsorption process exhibited exothermic enthalpy values. Chestnut shell was shown to be a promising biosorbent for Cu(II) removal from aqueous solutions. (C) 2009 Elsevier B.V. All rights reserved.

Keywords: Adsorbent, Adsorption, Adsorption Capacity, Aqueous Solutions, Aqueous-Solutions, Batch, Biosorbent, Biosorption, Capacity, Chestnut Shell, Copper, Copper(II) Ions, Cu(II), Cu(II) Removal, Data, Diffusion, Energy, Enthalpy, Equilibrium, Equilibrium Isotherms, Exothermic, Food, Gibbs Free Energy, Heavy-Metal Ions, Intra Particle Diffusion, Intra-Particle Diffusion, Intraparticle Diffusion, Isotherm, Isotherms, Kinetic, Kinetics, Langmuir, Langmuir Isotherm, Langmuir Model, Model, Models, Pseudo Second Order, Pseudo-Second-Order, Pseudo-Second-Order Model, Redlich-Peterson, Removal, Rights, Sawdust, Solutions, Thermodynamic, Thermodynamic Parameters, Thermodynamic Studies, Thermodynamics, Ultrafiltration, Waste-Water

? Valderrama, C., Arévalo, J.A., Casas, I., Martínez, M., Miralles, N. and Florido, A. (2010), Modelling of the Ni(II) removal from aqueous solutions onto grape stalk wastes in fixed-bed column. Journal of Hazardous Materials,