Study on Adsorption of As(III) by a New Bio-Material from Chitin Pyrolysis
1
Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan 467036, China
2
School of Environmental and Chemical Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China
3
Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
*
Author to whom correspondence should be addressed.
Academic Editors: Laura Bulgariu, Wei Zhao, Xiaoyan Liu, Yukun Zhu and Feihu Mu
Water 2021, 13(21), 2944; https://doi.org/10.3390/w13212944
Received: 14 September 2021
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Revised: 13 October 2021
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Accepted: 14 October 2021
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Published: 20 October 2021
(This article belongs to the Special Issue In Situ Treatment of Organic Pollutants in Water Environment Using Bioremediation and Advanced Oxidation Technology)
Chitin-char is obtained from fast pyrolysis of chitin. To obtain the maximum surface area, chitin-char is treated by nitric acid. Then, a kind of new arsenic removal bio-material is prepared by loading Ca(OH)2 on the char (called Ca(OH)2-char). IR spectroscopy before and after char treatment reveal at least three distinct patterns of peak changes. An adsorption study is performed at different doses, pHs, and coexisting ions in the batch mode. The adsorption kinetics follows two first-order equations. Kinetic studies yield an optimum equilibrium time of 2 h with an adsorbent dose of 0.4 g/L and concentration of 10 mg/L. Using only 0.4 g/L of carbon, the maximum removal capacity is about 99.8%. The result indicates that the Ca(OH)2-char has a high adsorption capacity in the process of removing arsenic (III).
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Keywords:
bio-materials; arsenic; adsorption; water treatment
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MDPI and ACS Style
Yang, Z.; Yan, G.; Song, Z.; Zhang, J.; Wang, C.; Yu, Z.; Bai, Z.; Zhuang, G.; Liang, F. Study on Adsorption of As(III) by a New Bio-Material from Chitin Pyrolysis. Water 2021, 13, 2944. https://doi.org/10.3390/w13212944
AMA Style
Yang Z, Yan G, Song Z, Zhang J, Wang C, Yu Z, Bai Z, Zhuang G, Liang F. Study on Adsorption of As(III) by a New Bio-Material from Chitin Pyrolysis. Water. 2021; 13(21):2944. https://doi.org/10.3390/w13212944
Chicago/Turabian StyleYang, Zhiguang, Gaojun Yan, Zhiwei Song, Junzheng Zhang, Chenlong Wang, Zhisheng Yu, Zhihui Bai, Guoqiang Zhuang, and Feng Liang. 2021. "Study on Adsorption of As(III) by a New Bio-Material from Chitin Pyrolysis" Water 13, no. 21: 2944. https://doi.org/10.3390/w13212944
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