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This article presents the biosorption potential of rice residues for Hg(II) removal from aqueous solution and oilfield produced water. Rice husk and rice straw were selected and functionalized with sulfur group from carbon disulfide in alkaline condition. The raw and modified biosorbents were characterized by using scanning electron microscopy, fourier transform infrared spectroscopy, energy dispersive...
The walnut shell, an agricultural waste, has been activated and used as an adsorbent for the adsorption of Direct and Reactive dyes from aqueous solution. Using a batch adsorption technique with respect to initial concentration and temperature the effects of various experimental parameters have been investigated. Equilibrium isotherms were analyzed by Langmuir, Freundlich, Temkin and Dubinin-Radushkevich...
The demand for effective and inexpensive sorbents is increasing in response to the widespread recognition of the deleterious health effects of heavy metals exposure through aqueous solutions. An adsorbent, bio-formulation (BF), was prepared by agricultural waste. The maximal biosorption removal of cadmium (II), lead(II), copper(II), zinc(II) on BF are 99.4, 99.8, 97.6, 98.3% at pH 8, 5, 5, 7, respectively...
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