Recent Progress on Biosorption of Heavy Metals from Liquids Using Low Cost Biosorbents: Characterization,Biosorption Parameters and Mechanism Studies |
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Authors: | Vicentius Ochie Arief Kiki Trilestari Jaka Sunarso Nani Indraswati Suryadi Ismadji |
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Institution: | 1. Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Surabaya, Indonesia.;2. Division of Chemical Engineering, The University of Queensland, Brisbane, Australia. |
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Abstract: | A significant number of biosorption studies on the removal of heavy metal from aqueous solutions have been conducted worldwide. Nearly all of them have been directed towards optimizing biosorption parameters to obtain the highest removal efficiency while the rest of them are concerned with the biosorption mechanism. Combinations of FTIR, SEM‐EDX, TEM as well as classical methods such as titrations are extremely useful in determining the main processes on the surfaces of biosorbents. Diverse functional groups represented by carboxyl, hydroxyl, sulfate and amino groups play significant roles in the biosorption process. Solution pH normally has a large impact on biosorption performance. In brief, ion exchange and complexation can be pointed out as the most prevalent mechanisms for the biosorption of most heavy metals. |
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Keywords: | Biosorption Heavy metals Biosorbent Mechanism |
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