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Investigation of Chromium Removal Efficacy from Tannery Effluent by Synthesized Chitosan from Crab Shell

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Title: Investigation of Chromium Removal Efficacy from Tannery Effluent by Synthesized Chitosan from Crab Shell
Authors: Hossain, Kaniz Fatima Binte Browse this author
Sikder, Md. Tajuddin Browse this author
Rahman, Md. Mostafizur Browse this author
Uddin, Md. Khabir Browse this author
Kurasaki, Masaaki Browse this author →KAKEN DB
Issue Date: Apr-2017
Journal Title: Arabian Journal for Science and Engineering
Volume: 42
Issue: 4
Start Page: 1569
End Page: 1577
Publisher DOI: 10.1007/s13369-017-2435-0
Abstract: The efficiency of chromium removal from tannery effluents using prepared crab shell chitosan was studied. Adsorption of Cr by chitosan was investigated at various contact times, pH values, adsorbent dosages, and temperatures. The amount of Cr adsorbed under different conditions was evaluated using atomic adsorption spectroscopy (AAS). Subsequently, the changes in the physicochemical parameters were also examined. It was found that the total dissolved solids (TDS), electrical conductivity (EC), and turbidity of the tannery effluent decreased significantly after treatment with crab shell chitosan. No significant changes were found after different soaking times; in most cases, the best adsorption was achieved within the first hour of treatment. On the other hand, the total organic carbon (TOC) and pH increased significantly after treatment with chitosan, possibly owing to dissolution of organic compounds from the adsorbent materials. The concentration of Cr was significantly reduced after treatment with chitosan under different treatment conditions. However, the highest amount of Cr was adsorbed within the first hour of contact. After studying different treatment conditions, it was found that maximum Cr removal from the tannery effluent was achieved at pH 3 (60 °C) using an adsorbent dose of 5 g/100 mL.
Rights: The final publication is available at
Type: article (author version)
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 藏崎 正明

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