亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Magnetic biochar-supported layered double hydroxide for simultaneous remediation of As and Cd in soil: Effectiveness, retention durability, and insight into a new immobilization mechanism

环境修复 修正案 生物炭 氢氧化物 浸出(土壤学) 化学 X射线光电子能谱 耐久性 化学工程 环境化学 土壤水分 核化学 污染 材料科学 无机化学 热解 土壤科学 环境科学 有机化学 生态学 政治学 法学 复合材料 生物 工程类
作者
Peng Lyu,Lianfang Li,Jinli Huang,Jing Ye,Changxiong Zhu
出处
期刊:Journal of Cleaner Production [Elsevier BV]
卷期号:434: 140136-140136 被引量:15
标识
DOI:10.1016/j.jclepro.2023.140136
摘要

Immobilization/stabilization is a common technique for remediating As and Cd-contaminated soil. However, the effectiveness of employed stabilizer plays a crucial role in determining the fate of these contaminants. This study investigated the effectiveness and durability of a magnetic biochar-supported Ca–Mg–Al layered double hydroxide composite (FLBC) and its components in simultaneous remediation of As and Cd in Phaeozem (BS) and Krasnozem soils (RS). Results demonstrated that 5 wt% FLBC amendment immobilized >85% of As and Cd and converted them into immobile fractions even in a reduction environment. Moreover, FLBC treatment effectively resisted leaching of As and Cd by > 70% under acidic rainwater filtration, thus displaying excellent retention durability. The new immobilization mechanisms were proved using transmission electron microscope technology, where layered double hydroxide (LDH) acted as a nano-bridge to bind FLBC and soil colloids ensuring FLBC stability and synergistic immobilization. During this process, X-ray photoelectron analysis demonstrated the re-oxidation of As(III) to As(V) driven by ferric reduction that resulted in the formation of multiple stable species on the soil surface via the confirmation of X-ray absorption near fine structure and extended X-ray absorption fine structure. This species included Ca/Fe/Cd–As(V) and γ-Cd(OH)2 co-precipitation, as well as As(V)–O–Fe(III)/Ca and As–Fe tridentate-hexanuclear corner-sharing complexes. Furthermore, FLBC amendment favored the immobilization of As and Cd in RS soil compared to BS soil due to a weaker reduction potential and an increased participation of metal-(hydr)oxides for As and Cd complexation. This study provides valuable references for predicting the impact of LDH-coupled magnetic biochar technology on the fate of As and Cd in actual soil environments.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
实验大牛完成签到,获得积分10
1秒前
852应助scholar丨崔采纳,获得10
14秒前
15秒前
一D完成签到,获得积分10
18秒前
儒雅致远发布了新的文献求助10
21秒前
YiPeng完成签到,获得积分10
22秒前
25秒前
核桃发布了新的文献求助10
30秒前
桐桐应助儒雅致远采纳,获得10
31秒前
核桃完成签到,获得积分0
35秒前
排骨大王完成签到,获得积分10
36秒前
37秒前
joker完成签到 ,获得积分10
41秒前
核桃发布了新的文献求助100
44秒前
48秒前
温暖元容完成签到,获得积分10
51秒前
scholar丨崔发布了新的文献求助10
55秒前
1分钟前
淡定的彩虹完成签到,获得积分10
1分钟前
1分钟前
sss发布了新的文献求助10
1分钟前
1分钟前
情怀应助科研通管家采纳,获得10
1分钟前
1分钟前
卡卡完成签到 ,获得积分10
1分钟前
CNY完成签到 ,获得积分10
1分钟前
赘婿应助_ban采纳,获得10
1分钟前
2分钟前
bksqc发布了新的文献求助10
2分钟前
bksqc完成签到,获得积分10
2分钟前
卑微学术人完成签到 ,获得积分10
2分钟前
2分钟前
无花果应助feifei采纳,获得10
2分钟前
griffon完成签到,获得积分10
3分钟前
汉堡包应助通通采纳,获得10
3分钟前
3分钟前
Huay完成签到 ,获得积分10
3分钟前
tingting9发布了新的文献求助10
3分钟前
英俊的铭应助科研通管家采纳,获得10
3分钟前
3分钟前
高分求助中
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3990020
求助须知:如何正确求助?哪些是违规求助? 3532077
关于积分的说明 11256276
捐赠科研通 3270943
什么是DOI,文献DOI怎么找? 1805139
邀请新用户注册赠送积分活动 882270
科研通“疑难数据库(出版商)”最低求助积分说明 809228