Abstract
The chemically enhanced kapok fiber was fabricated and tested for an industrial and environmental application, and optimized conditions for fiber modification and adsorption kinetic reactions were developed and evaluated. A significant improvement of the adsorption efficiency for the uptakes of Cd2+, Cu2+, Ni2+, Pb2+, and Zn2+ ions was observed with the chemically enhanced kapok fibers. The experimented metals were removed in the range of 95–99 % with a removal order such as Pb2+ > Cu2+ > Ni2+ ≈ Cd2+ > Zn2+. The adsorption kinetic models for such metals were also studied, indicating that chemisorption and reconstructed three-dimensional (3D) polymer structure were the determining rate step because of the higher correlation rate constant of the pseudo-second-order reaction. Along with metal adsorption study, the adsorption of methylene blue (MB) and trichloroethylene (TCE) with the chemically enhanced fiber was also estimated.
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Wang, R., Shin, CH., Kim, D. et al. Adsorption of heavy metals and organic contaminants from aqueous stream with chemically enhanced kapok fibers. Environ Earth Sci 75, 338 (2016). https://doi.org/10.1007/s12665-016-5254-9
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DOI: https://doi.org/10.1007/s12665-016-5254-9