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M P Kaur – 1st expert on this subject based on the ideXlab platform
Agricultural Waste MATERIAL AS POTENTIAL ADSORBENT FOR SEQUESTERING HEAVY METAL IONS FROM AQUEOUS SOLUTIONSWater Sciences and Engineering Technology, 2020Co-Authors: Garima Mahajan, M P KaurAbstract:
Agricultural Waste materials as a potential heavy metal ion adsorbent are usually composed of cellulose and lignin as the main constituents. This paper reviews several Agricultural Waste materials and its modified forms as adsorbents for the removal of heavy metals from aqueous solutions. The adsorption mechanisms and the influences, such as pH, initial heavy metal ions concentrations, adsorbent dosage and reaction temperature, on the adsorption of modified Agricultural Wastes were discussed as well. What’s more, applying prospect of modified Agricultural Waste materials in Waste water treatment is also presented.
Agricultural Waste material as potential adsorbent for sequestering heavy metal ions from aqueous solutions a reviewBioresource Technology, 2008Co-Authors: Dhiraj Sud, Garima Mahajan, M P KaurAbstract:
Abstract Heavy metal remediation of aqueous streams is of special concern due to recalcitrant and persistency of heavy metals in environment. Conventional treatment technologies for the removal of these toxic heavy metals are not economical and further generate huge quantity of toxic chemical sludge. Biosorption is emerging as a potential alternative to the existing conventional technologies for the removal and/or recovery of metal ions from aqueous solutions. The major advantages of biosorption over conventional treatment methods include: low cost, high efficiency, minimization of chemical or biological sludge, regeneration of biosorbents and possibility of metal recovery. Cellulosic Agricultural Waste materials are an abundant source for significant metal biosorption. The functional groups present in Agricultural Waste biomass viz. acetamido, alcoholic, carbonyl, phenolic, amido, amino, sulphydryl groups etc. have affinity for heavy metal ions to form metal complexes or chelates. The mechanism of biosorption process includes chemisorption, complexation, adsorption on surface, diffusion through pores and ion exchange etc. The purpose of this review article is to provide the scattered available information on various aspects of utilization of the Agricultural Waste materials for heavy metal removal. Agricultural Waste material being highly efficient, low cost and renewable source of biomass can be exploited for heavy metal remediation. Further these biosorbents can be modified for better efficiency and multiple reuses to enhance their applicability at industrial scale.
removal of nickel ii from aqueous solution by adsorption on Agricultural Waste biomass using a response surface methodological approachBioresource Technology, 2008Co-Authors: Umesh Kumar Garg, M P Kaur, V K GargAbstract:
Abstract In the present study, effect of adsorbent dose, pH and agitation speed on nickel removal from aqueous medium using an Agricultural Waste biomass, Sugarcane bagasse has been investigated. Batch mode experiments were carried out to assess the adsorption equilibrium. The influence of three parameters on the removal of nickel was also examined using a response surface methodological approach. The central composite face-centered experimental design in response surface methodology (RSM) by Design Expert Version 6.0.10 (Stat Ease, USA) was used for designing the experiments as well as for full response surface estimation. The optimum conditions for maximum removal of nickel from an aqueous solution of 50 mg/L were as follows: adsorbent dose (1500 mg/L), pH (7.52) and stirring speed (150 rpm). This was evidenced by the higher value of coefficient of determination (r2 = 0.9873).
B H Hameed – 2nd expert on this subject based on the ideXlab platform
batch adsorption of methylene blue from aqueous solution by garlic peel an Agricultural Waste biomassJournal of Hazardous Materials, 2009Co-Authors: B H Hameed, Anees AhmadAbstract:
Abstract The potential of garlic peel (GP), Agricultural Waste, to remove methylene blue (MB) from aqueous solution was evaluated in a batch process. Experiments were carried out as function of contact time, initial concentration (25–200 mg/L), pH (4–12) and temperature (303, 313 and 323 K). Adsorption isotherms were modeled with the Langmuir, Freundlich, and Temkin isotherms. The data fitted well with the Freundlich isotherm. The maximum monolayer adsorption capacities were found to be 82.64, 123.45, and 142.86 mg/g at 303, 313, and 323 K, respectively. The kinetic data were analyzed using pseudo-first-order and pseudo-second-order models. The results indicated that the garlic peel could be an alternative for more costly adsorbents used for dye removal.
a novel Agricultural Waste adsorbent for the removal of cationic dye from aqueous solutionsJournal of Hazardous Materials, 2009Co-Authors: B H Hameed, R R Krishni, Suhairi A SataAbstract:
Abstract In this paper, pineapple stem (PS) Waste, an Agricultural Waste available in large quantity in Malaysia, was utilized as low-cost adsorbent to remove basic dye (methylene blue, MB) from aqueous solution by adsorption. Batch mode experiments were conducted at 30 °C to study the effects of initial concentration of methylene blue, contact time and pH on dye adsorption. Equilibrium adsorption isotherms and kinetic were investigated. The experimental data were analyzed by the Langmuir and Freundlich models and the isotherm data fitted well to the Langmuir isotherm with monolayer adsorption capacity of 119.05 mg/g. The kinetic data obtained at different concentrations were analyzed using a pseudo-first-order and pseudo-second-order equation and intraparticle diffusion equation. The experimental data fitted very well the pseudo-second-order kinetic model. The PS was found to be very effective adsorbent for MB adsorption.
equilibrium and kinetic studies of methyl violet sorption by Agricultural WasteJournal of Hazardous Materials, 2008Co-Authors: B H HameedAbstract:
Abstract In this work, sunflower (Helianthus annuus L.) seed hull (SSH), an Agricultural Waste, was evaluated for its ability to remove methyl violet (MV) from aqueous solutions. Sorption isotherm of MV onto the SSH was determined at 30 °C with the initial concentrations of MV in the range of 25–300 mg/L. The equilibrium data were analyzed using the Langmuir, Freundlich and Temkin isotherm models. The equilibrium process was described well by the Freundlich isotherm model. The maximum SSH sorption capacity was found to be 92.59 mg/L at 30 °C. The kinetic data were studied in terms of the pseudo-first-order, pseudo-second-order and intraparticle diffusion kinetic models. The pseudo-second-order model best described the sorption process. A single-stage batch-adsorber design of the adsorption of MV onto SSH was studied based on the Freundlich isotherm equation. The results indicated that sunflower seed hull was an attractive candidate for removing methyl violet from aqueous solution.
Anna Witekkrowiak – 3rd expert on this subject based on the ideXlab platform
Agricultural Waste peels as versatile biomass for water purification a reviewChemical Engineering Journal, 2015Co-Authors: Amit Bhatnagar, Mika Sillanpaa, Anna WitekkrowiakAbstract:
Abstract Agricultural Waste peels have been recognized as an ecological burden for the society. However, Waste peels , as lignocellulosic biomass-rich materials, have stimulated new gateways for the production of renewable, low cost and sustainable adsorbents for water treatment applications. This review compiles the work conducted by various researchers over the last few decades on the use of various Agricultural Waste peels as adsorbents for the water and Wastewater treatment. In this review, adsorption capacities for organic and inorganic pollutants by different peel-based adsorbents are summarized. Wherever applicable, different modification methods, which have been employed to develop modified peel-based adsorbents, have also been presented to highlight and discuss the key advancements on the preparation of novel adsorbents using Agricultural Waste peels . Adsorption mechanisms responsible for pollutants removal by peel-based adsorbents have also been discussed. Finally, conclusions have been drawn from the literature reviewed. The paper also discusses the future research needs in the area of biosorbent development utilizing Agricultural Waste peels for application in water treatment.