Loading of MgO onto Fe-rich sludge-derived Fe0 biochar composites for efficient aqueous Pb2+removal: Performance and mechanism
文献类型： 外文期刊
第一作者： Zhang, Qi
作者： Zhang, Qi;Xiao, Wendan;Chen, De;Zhao, Shouping;Zhao, Zhen;Ye, Xuezhu;Huang, Xiaolei;Zhang, Qi;Xiao, Wendan;Chen, De;Zhao, Shouping;Zhao, Zhen;Ye, Xuezhu;Huang, Xiaolei;Zhang, Qi;Xiao, Wendan;Chen, De;Zhao, Shouping;Zhao, Zhen;Ye, Xuezhu;Huang, Xiaolei;Li, Hui
作者机构：
关键词： Zero-valent iron; Magnesium oxide; Biochar; Removal; Pb2+
期刊名称：JOURNAL OF WATER PROCESS ENGINEERING （ 影响因子：6.7； 五年影响因子：6.7 ）
ISSN： 2214-7144
年卷期： 2025 年 69 卷
页码：
收录情况： SCI
摘要： Scavenging of Pb from aquatic environments is of great importance to environmental and human health. Although Fe0 biochar composites (Fe0@BCs) possess high Pb2+ adsorption capacities, they have high fabrication costs and relatively low stability. Here, a novel MgO-modified Fe0@BCs was successfully fabricated by copyrolyzing Fe-rich sludge (FRS) and MgCl2 at 900 degrees C. The Fe0@BC obtained at an FRS:MgCl2 mass ratio of 10.0:2.7 (MBC-2.7) displayed significantly higher performance than unmodified Fe0@BC. MgO loading effectively prevented the formation of Pb0-Fe0 bimetallic systems, thereby reducing the Fe ions and maintaining the pH of the solution. The enhanced ion-exchange capacity due to modification was also correlated with the Pb2+ removal capacity. Moreover, MBC-2.7 primarily removed Pb2+ through chemisorption, with a maximum scavenging capacity of 439.23 mg/g. The removal mechanisms mainly involved adsorption, reduction of Pb2+ to Pb0, ion exchange, and precipitation. Overall, Fe0@BCs after proper modification with MgO presented great promise for use in the remediation of Pb contamination.
分类号：
- 相关文献
作者其他论文 更多>>
-
Development of an enhanced hybrid attention YOLOv8s small object detection method for phenotypic analysis of root nodules
作者：Zhao, Ya;Zhang, Wen;Zhang, Liangxiao;Tang, Xiaoqian;Wang, Du;Zhang, Qi;Li, Peiwu;Tang, Xiaoqian;Zhang, Qi;Li, Peiwu;Zhao, Ya;Li, Peiwu
关键词：Root nodules; YOLOv8s; Hybrid attention mechanism; Small object detection; Phenotypic characteristics
-
A ratiometric fluorescent probe for the determination of quinolone antibiotics in milk based on N and S co-doped carbon quantum dots
作者：Wang, Fang;Li, Xiaoyun;Zhang, Yuchen;Li, Hui;Jiang, Shanxue;Li, Dandan;Yao, Zhiliang;Wang, Fang;Li, Xiaoyun;Zhang, Yuchen;Li, Hui;Jiang, Shanxue;Li, Dandan;Yao, Zhiliang;Wang, Fang;Li, Xiaoyun;Zhang, Yuchen;Li, Hui;Jiang, Shanxue;Li, Dandan;Yao, Zhiliang;Han, Jiajun;Gong, Wenwen
关键词：Carbon quantum dot; Ratiometric fluorescence probe; Moxifloxacin; Gatifloxacin; Ofloxacin; Milk
-
Smartphone-assisted electrochemiluminescence imaging test strips towards dual-signal visualized and sensitive monitoring of aflatoxin B1 in corn samples
作者：Chen, Miao-Miao;Jiang, Jun;Tang, Xiaoqian;Zhang, Qi;Li, Peiwu;Chen, Miao-Miao;Jiang, Jun;Tang, Xiaoqian;Zhang, Qi;Li, Peiwu;Tang, Xiaoqian;Zhang, Qi;Li, Peiwu;Tang, Xiaoqian;Zhang, Qi;Li, Peiwu;Chen, Miao-Miao;Zhang, Min-Ling;Song, Xiao;Zhang, Xiuhua;Chen, Miao-Miao;Song, Xiao
关键词：Electrochemiluminescence imaging; Test strips; Nanomaterials; Dual-signal outputs; Aflatoxin B1; Food safety
-
Knockdown of tyrosine hydroxylase gene affects larval survival, pupation and adult eclosion in Plagiodera versicolora
作者：Liu, Xiaolong;Wang, Xin;Zhang, Qi;Lu, Min;Ze, Longji;Zhang, Hainan
关键词：cuticle tanning; mortality;
Plagiodera versicolora ; RNA interference; tyrosine hydroxylase -
Cultivar-specific rhizosphere microbial community responses to cadmium-NaHCO3 stress in relation to cadmium accumulation in rice
作者：Zhao, Shouping;Gao, Na;Zhang, Qi;Xiao, Wendan;Chen, De;Huang, Miaojie;Ye, Xuezhu;Zhao, Shouping;Gao, Na;Zhang, Qi;Xiao, Wendan;Chen, De;Huang, Miaojie
关键词：Cadmium; Alkali stress; Rice; Cultivar-specific; Microbial community
-
No-tillage practice enhances soil total carbon content in a sandy Cyperus esculentus L. field
作者：Wang, Cong;Hu, Yuxiang;Wu, Hui;Wang, Zhirui;Cai, Jiangping;Wang, Zhengwen;Li, Hui;Wang, Cong;Hu, Yuxiang;Wu, Hui;Liu, Heyong;Jiang, Yong;Ren, Wei;Yang, Ning
关键词：No-tillage; Bacterial community composition; Bacterial function prediction; Aeolian sandy soil;
Cyperus esculentus L. -
Kynurenine, a derivative of tryptophan, inhibits progesterone biosynthesis in porcine granulosa luteal cells through Aryl hydrocarbon receptor-mediated downregulation of GATA-binding protein 4, 6, and CCAAT/enhancer-binding protein beta†
作者：Liao, Shiying;Deng, Yanfei;Liao, Shiying;Cheng, Jinhua;Zhao, Weimin;Dai, Chaohui;Fu, Yanfeng;Li, Bixia;Li, Hui;Li, Hui
关键词：kynurenine; progesterone; granulosa luteal cell; STAR; AHR
