您好，欢迎访问北京市农林科学院 机构知识库！
北京市农林科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Simultaneous adsorption removal of organic and inorganic phosphorus from discharged circulating cooling water on biochar derived from agricultural waste

文献类型： 外文期刊

作者： Pan, Weiliang 1 ; Xie, Huimin 1 ; Zhou, Yi 1 ; Wu, Qiye 1 ; Zhou, Jiaqi 2 ; Guo, Xuan 2 ;

作者机构： 1.Chongqing Jiaotong Univ, Sch River & Ocean Engn, Chongqing 400074, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr Resources & Environm, Beijing 100097, Peoples R China

3.Hebei Agr Univ, Collage Resources & Environm Sci, Baoding 071001, Peoples R China

关键词： Adsorption; Modified biochar; Discharged circulating cooling water; Phosphate; Organic phosphorus

期刊名称：JOURNAL OF CLEANER PRODUCTION （ 影响因子：11.1； 五年影响因子：11.0 ）

ISSN： 0959-6526

年卷期： 2023 年 383 卷

页码：

收录情况： SCI

摘要： A high level of organic and inorganic phosphorus exists in discharged circulating cooling water (DCCW), therefore, the efficient removal of phosphorus from DCCW is necessary. Herein, the adsorption performance and mechanism of hydroxyethylidene diphosphonic acid (HEDP) and phosphate from DCCW on pyrolysis biochar derived from agricultural waste (wheat and corn straw wastes, and peanut shell powder) were systematically investigated. Among them, biochar prepared from wheat straw and modified with MgCl2 and CeCl3 (molar ratio 3:1), i.e., WS-3Mg/Ce, showed optimal phosphorus removal from DCCW. The pseudo-second-order and Freundlich model well described the adsorption of HEDP, PO43 , and total phosphorus (TP) on WS-3Mg/Ce. Further, negative Gibbs free energy (Delta G) indicated that WS-3Mg/Ce adsorbed HEDP and phosphate through physical adsorption and chemical reactions, with the chemical reaction being dominant. Scanning electron microscopy-energy dispersive X-ray spectroscopy and X-ray diffraction results revealed that CePO4 and Mg3(PO4)2 appeared on WS-3Mg/Ce after adsorption, and the diffraction bands of metal oxides or hydroxides decreased. Fourier transform infrared and X-ray photoelectron spectroscopy results showed that O-H, M-O, M -O-P, and O-P on the surface of WS-3Mg/Ce participate in the reaction. This suggests that the adsorption of HEDP and phosphate on WS-3Mg/Ce mainly involves metal binding via Ce and Mg, and chemical complex via OH-. This study provides a promising approach for removing different forms of phosphorus simultaneously from DCCW via biochar and contributes to the resource recovery of agricultural and forestry waste. Future work is needed for the optimization of the biochar to promote the adsorption capacity and renewability in treating real DCCW.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：北京市农林科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台