Effects of chemical oxidation on surface oxygen-containing functional groups and adsorption behavior of biochar

Chemosphere
Qinya FanMuhammad Iqbal

Abstract

Biochar is a beneficial soil amendment but the changes in its surface properties during the aging process, especially the oxygen-containing functional groups and the associated adsorption behaviors, are not well documented. In this paper, the aged wheat straw biochar was simulated by chemical oxidation with HNO3-H2SO4 and NaOH-H2O2 systems. Characterization results showed that carbon loss and oxygen incorporation ran throughout the aging process. Surface oxygen-containing functional groups were found to be increased in all treated biochars, especially for carboxyl. Much more developed mesopores were observed in aging biochar, specific surface area was increased by 126% for biochar treated with NaOH-H2O2, and 226% for biochar treated with 40% of HNO3-H2SO4. Thermogravimetric analysis showed that the increasing oxygen-containing functional groups led to 14% and 30% mass loss by treating biochar with alkali and acid, respectively. The improved biochar surface through the increase of oxygen-containing functional groups enhanced the cadmium sorption capacity, and the sorption capacity increased by 21.2% in maximum. Roughed surface from oxidation was another reason for increasing cadmium adsorption. Results indicated that the adsorpt...Continue Reading

Citations

Nov 22, 2019·Environmental Science and Pollution Research International·Junxiang GuoTingyu Zhu
Aug 14, 2020·Environmental Science. Processes & Impacts·Yuchi ZhongYong Sik Ok
Jan 2, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Carolina Rodríguez, Eduardo Leiva
Sep 3, 2020·Journal of Health & Pollution·Abudu Ballu DuwiejuahYakubu Amadu
Nov 17, 2020·Environmental Science and Pollution Research International·Tongtong WangXingchang Zhang
Dec 31, 2020·Animals : an Open Access Journal From MDPI·Andrés F Gonzalez-MoraSébastien Fournel
Feb 26, 2021·Environmental Science and Pollution Research International·Baoqing LiWenxiang Wang
Jun 6, 2020·The Science of the Total Environment·Yangyang WangRunhua Chen
Mar 19, 2021·Bioresource Technology·Yifeng SuZhi Zhou
Mar 20, 2021·The Science of the Total Environment·Fan YangQiang Xue
Mar 20, 2021·The Science of the Total Environment·Huang ZhangDi Zhang
Apr 17, 2020·The Science of the Total Environment·Yuyan LiuJiawei Chen
Jun 6, 2021·The Science of the Total Environment·Abdoul Salam Issiaka Abdoul MagidYongtao Li
Jul 12, 2021·Journal of Hazardous Materials·Lichun DaiHuagang Huang
Jul 30, 2021·The Science of the Total Environment·Bruno Cocco LagoEverton Geraldo de Morais
Aug 25, 2021·Environmental Pollution·Detian LiLinzhang Yang

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