The Effects of Three Bean Shell Biochars Under Different Pyrolysis Temperatures on the Adsorption of Cd and Pb in Aqueous Solutions
文献类型： 外文期刊
作者： Shen, Tao 1 ; Xia, Hongyu 1 ; Zhang, Heyi 1 ; Guang, Song 1 ; Hu, Wenwen 1 ; Zhao, Wenrui 1 ; Zhao, Kuan 1 ; Xiao, Xin 1 ; Zhang, Shiwen 2 ; Xu, Aiai 3 ;
作者机构： 1.Anqing Normal Univ, Key Lab Intelligent Qual Monitoring & Soil Fertil, Coll Resources & Environm, Key Lab Aqueous Environm Protect & Pollut Control, Anqing 246133, Peoples R China
2.Anhui Univ Sci & Technol, Sch Earth & Environm, Huainan 232001, Peoples R China
3.Fujian Acad Agr Sci, Inst Resources Environm & Soil Fertilizer, Fujian Key Lab Plant Nutr & Fertilizer, Fuzhou 350013, Peoples R China
关键词： bean shell biochar; representation; heavy metals; adsorption
期刊名称：WATER （ 影响因子：3.0； 五年影响因子：3.3 ）
ISSN：
年卷期： 2025 年 17 卷 7 期
页码：
收录情况： SCI
摘要： Biochar is an eco-friendly material that influences heavy metals adsorption. Three kinds of bean shell biochar, namely, peanut, pea, and soybean biochar, were prepared at pyrolysis temperatures of 400 degrees C, 500 degrees C, and 600 degrees C. The characteristics of these biochars and the physicochemical properties of the biochars were analyzed. The capacities of the different biochars to adsorb Pb and Cd from aqueous solution were determined. With increasing pyrolysis temperature, the relative content of carbon in the biochar increased and that of hydrogen decreased, the porosity decreased, and the specific surface area increased; accordingly, the adsorption capacity of the biochar for Pb and Cd increased. The Pb adsorption capacity of the peanut shell biochar prepared at 400 degrees C was lower than that of the other shell biochars when the initial Pb concentration was at a low concentration. Three adsorption isotherm models were used to fit the adsorption processes of Pb or Cd on the three different biochars. The Freundlich curves better fit the adsorption capacity of biochar for Cd, and the Freundlich and Langmuir curves better fit the adsorption capacity of biochar for Pb. This work provides a scientific basis for the rational selection of bean shell biochar used in metal-contaminated water.
- 相关文献
作者其他论文 更多>>
-
DATDM: Dynamic attention transformer diffusion model for underwater image enhancement
作者：Hu, Wang;Chen, Shitu;Zhang, Lijun;Zhang, Hongjin;Xu, Jingxiang;Luo, Tuyan;Zhang, Lijun;Zhang, Hongjin;Xu, Jingxiang;Liu, Zhixiang;Zhang, Shiwen
关键词：Diffusion model; Underwater image enhancement; Color correction; Dynamic attention transformer
-
Long-term nitrogen deposition alters the soil bacterial community structure but has little effect on fungal communities
作者：Zheng, Xiangzhou;Xu, Aiai;Wang, Huangping;Ding, Hong;Wu, Yiqun;Zhang, Yushu;Lin, Yan
关键词：Soil microbial community; N deposition; Potential function; Moso bamboo forest; Organic and mineral horizon
-
Soil bacterial community composition rather than diversity exhibits edge effects in a farming-pastoral ecotone
作者：Xu, Aiai;Zheng, Xiangzhou;Zhang, Yushu;Xu, Aiai;Liu, Jie;Pan, Xianzhang;Liu, Jie;Pan, Xianzhang
关键词：Farming-pastoral ecotone; Edge effect; Soil bacterial diversity; Community composition; Wind speed; NDVI
-
Increasing land-use durations enhance soil microbial deterministic processes and network complexity and stability in an ecotone
作者：Xu, Aiai;Xu, Aiai;Guo, Zhiying;Pan, Kai;Wang, Changkun;Zhang, Fangfang;Liu, Jie;Pan, Xianzhang;Guo, Zhiying;Pan, Kai;Wang, Changkun;Zhang, Fangfang;Liu, Jie;Pan, Xianzhang;Liu, Jie;Pan, Xianzhang
关键词：Agro-pastoral ecotone; Soil microbes; Community assembly; Co -occurrence network; Land -use type; Land -use duration
-
Response of Soil Microbial Communities and Functions to Long-Term Tea (Camellia sinensis L.) Planting in a Subtropical Region
作者：Zheng, Xiangzhou;Wu, Yiqun;Xu, Aiai;Lin, Cheng;Wang, Huangping;Yu, Juhua;Ding, Hong;Zhang, Yushu
关键词：soil microbial community; tea planting ages; microbial potential function; high-throughput sequencing
