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!

Solidification/stabilization of lead-contaminated soils by phosphogypsum slag-based cementitious materials

磷石膏 钙矾石 胶凝的 氧化铅 浸出(土壤学) 水合硅酸钙 抗压强度 材料科学 水泥 化学 核化学 土壤水分 冶金 硅酸盐水泥 环境科学 复合材料 原材料 有机化学 土壤科学
作者
Zhisheng Ren,Lu Wang,Hao Wang,Shuhua Liu,Min Liu
出处
期刊:Science of The Total Environment [Elsevier BV]
卷期号:857: 159552-159552 被引量:64
标识
DOI:10.1016/j.scitotenv.2022.159552
摘要

In the present study, phosphogypsum slag-based cementitious material (PS) was designed, and the potential use for solidifying/stabilizing lead-contaminated soils was investigated. The physicochemical properties, performance, and mechanisms of its stabilization of lead in soil were studied by the methods of toxic leaching test, compressive strength, XRD, TGA, FTIR and XPS. The compressive strength of the PS solidified body was from 0.52 to 6.66 MPa when he concentration of lead ions in contaminated soil was set as 6000 mg/kg (0.6 %), 10,000 mg/kg (1.0 %) and 15,000 mg/kg (1.5 %) and the dosage of curing agent is 10 %, 20 % and 30 %., which is acceptable for backfill treatments or roadbed materials. Under the conditions, Pb leaching concentrations ranged from 40.98 to 355.21 μg·L-1, which was within the safety limit specified in Chinese standard (GB5085.3–2007). There is the potential for safe disposal and reuse of PS stabilized soil. TGA and XRD showed that the main components of PS-solidified soil were ettringite (AFt), calcium silicate hydrate (C-S-H), and lead phosphate. FTIR, XPS, and SEM-EDS analysis demonstrated the lead was successfully incorporated into AFt and C-S-H. Pb forms bonds with lead oxide and aluminum oxide tetrahedra and replaces part of the adsorbed Ca ions in AFt and C-S-H. In addition, the resulting phosphate precipitates were also encapsulated in the C-S-H phase, together with the stabilization of lead in the soil.
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
刚刚
3秒前
君君完成签到 ,获得积分10
21秒前
24秒前
如沐春风发布了新的文献求助10
28秒前
35秒前
37秒前
evlouu发布了新的文献求助10
44秒前
50秒前
50秒前
思源应助科研通管家采纳,获得10
50秒前
yx_cheng应助科研通管家采纳,获得10
50秒前
李爱国应助风中的雅柏采纳,获得10
51秒前
量子星尘发布了新的文献求助10
1分钟前
1分钟前
evlouu发布了新的文献求助10
1分钟前
1分钟前
1分钟前
1分钟前
1分钟前
1分钟前
1分钟前
淡淡醉波wuliao完成签到 ,获得积分0
2分钟前
如沐春风发布了新的文献求助10
2分钟前
汉堡包应助如沐春风采纳,获得10
2分钟前
2分钟前
量子星尘发布了新的文献求助10
2分钟前
yx_cheng应助科研通管家采纳,获得10
2分钟前
yx_cheng应助科研通管家采纳,获得10
2分钟前
yx_cheng应助科研通管家采纳,获得10
2分钟前
2分钟前
如沐春风发布了新的文献求助10
3分钟前
coolplex完成签到 ,获得积分10
3分钟前
打打应助风中的雅柏采纳,获得10
3分钟前
3分钟前
3分钟前
比比谁的速度快应助www采纳,获得10
3分钟前
量子星尘发布了新的文献求助10
4分钟前
4分钟前
4分钟前
高分求助中
【提示信息,请勿应助】关于scihub 10000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Social Research Methods (4th Edition) by Maggie Walter (2019) 2390
A new approach to the extrapolation of accelerated life test data 1000
北师大毕业论文 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 390
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
Robot-supported joining of reinforcement textiles with one-sided sewing heads 360
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 4008199
求助须知:如何正确求助?哪些是违规求助? 3548001
关于积分的说明 11298620
捐赠科研通 3282865
什么是DOI,文献DOI怎么找? 1810238
邀请新用户注册赠送积分活动 885957
科研通“疑难数据库(出版商)”最低求助积分说明 811188