PMID- 35525516
OWN - NLM
STAT- MEDLINE
DCOM- 20220603
LR  - 20220603
IS  - 1873-6424 (Electronic)
IS  - 0269-7491 (Linking)
VI  - 306
DP  - 2022 Aug 1
TI  - Immobilization of cadmium by mercapto-functionalized palygorskite under 
      stimulated acid rain: Stability performance and micro-ecological response.
PG  - 119400
LID - S0269-7491(22)00614-5 [pii]
LID - 10.1016/j.envpol.2022.119400 [doi]
AB  - The interaction of cadmium (Cd) pollution and acid rain stress has seriously 
      threatened soil ecosystem and human health. However, there are still few 
      effective amendments for the in-situ remediation in the Cd-contaminated acidified 
      soil. In this study, the performance and mechanisms of palygorskite (PAL) and 
      mercapto-functionalized PAL (MPAL) on Cd immobilization were investigated, and 
      the stability as well as effects on soil micro-ecology under stimulated acid rain 
      were also explored. Results showed that MPAL could react with Cd to form stable 
      Cd-sulfhydryl and Cd-O complexes. The reduction of bioavailable Cd by MPAL was 
      121.19-164.86% higher than that by PAL. Notably, the Cd immobilization by MPAL 
      remained stable within 90 days in which the concentrations of HOAc-extractable Cd 
      were reduced by 18.28-25.12%, while the reducible and residual fractions were 
      increased by 9.26-18.53% and 54.16%-479.01%, respectively. The sequential acid 
      rain leaching demonstrated that soil after MPAL treatments had a strong H(+) 
      resistance, and the immobilized Cd showed prominent stability. In addition, 
      activities of acid phosphatase, catalase and invertase in MPAL treated soil were 
      significantly enhanced by 34.60%, 22.09% and 48.87%, respectively. After MPAL 
      application, bacterial diversity was further improved with diversified sulfur 
      metabolism biomarkers. The decreased abundance of Cd resistance genes including 
      cadA, cadC, czcA, czcB, czcR and zipA also indicated that soil micro-ecology was 
      improved by MPAL. These results showed that MPAL was an effective and 
      eco-friendly amendment for the immobilization of Cd in contaminated soil.
CI  - Copyright (c) 2022 Elsevier Ltd. All rights reserved.
FAU - Li, Jia
AU  - Li J
AD  - State Environmental Protection Key Laboratory of Synergetic Control and Joint 
      Remediation for Soil & Water Pollution, College of Ecology and Environment, 
      Chengdu University of Technology, Chengdu, 610059, PR China.
FAU - Wu, Bin
AU  - Wu B
AD  - State Environmental Protection Key Laboratory of Synergetic Control and Joint 
      Remediation for Soil & Water Pollution, College of Ecology and Environment, 
      Chengdu University of Technology, Chengdu, 610059, PR China. Electronic address: 
      wub@cdut.edu.cn.
FAU - Luo, Zhi
AU  - Luo Z
AD  - State Environmental Protection Key Laboratory of Synergetic Control and Joint 
      Remediation for Soil & Water Pollution, College of Ecology and Environment, 
      Chengdu University of Technology, Chengdu, 610059, PR China.
FAU - Lei, Ningfei
AU  - Lei N
AD  - State Environmental Protection Key Laboratory of Synergetic Control and Joint 
      Remediation for Soil & Water Pollution, College of Ecology and Environment, 
      Chengdu University of Technology, Chengdu, 610059, PR China.
FAU - Kuang, Hongjie
AU  - Kuang H
AD  - State Environmental Protection Key Laboratory of Synergetic Control and Joint 
      Remediation for Soil & Water Pollution, College of Ecology and Environment, 
      Chengdu University of Technology, Chengdu, 610059, PR China.
FAU - Li, Ziqing
AU  - Li Z
AD  - State Environmental Protection Key Laboratory of Synergetic Control and Joint 
      Remediation for Soil & Water Pollution, College of Ecology and Environment, 
      Chengdu University of Technology, Chengdu, 610059, PR China.
LA  - eng
PT  - Journal Article
DEP - 20220504
PL  - England
TA  - Environ Pollut
JT  - Environmental pollution (Barking, Essex : 1987)
JID - 8804476
RN  - 0 (Acid Rain)
RN  - 0 (Magnesium Compounds)
RN  - 0 (Silicon Compounds)
RN  - 0 (Soil)
RN  - 0 (Soil Pollutants)
RN  - 00BH33GNGH (Cadmium)
RN  - U6V729APAM (attapulgite)
SB  - IM
MH  - *Acid Rain
MH  - Cadmium/analysis
MH  - Ecosystem
MH  - Humans
MH  - Magnesium Compounds
MH  - Silicon Compounds
MH  - Soil
MH  - *Soil Pollutants/analysis
OTO - NOTNLM
OT  - Acid rain
OT  - Cadmium
OT  - Immobilization
OT  - Mercapto-functionalized palygorskite
OT  - Micro-ecology
EDAT- 2022/05/08 06:00
MHDA- 2022/06/07 06:00
CRDT- 2022/05/07 19:37
PHST- 2022/01/19 00:00 [received]
PHST- 2022/04/06 00:00 [revised]
PHST- 2022/04/30 00:00 [accepted]
PHST- 2022/05/08 06:00 [pubmed]
PHST- 2022/06/07 06:00 [medline]
PHST- 2022/05/07 19:37 [entrez]
AID - S0269-7491(22)00614-5 [pii]
AID - 10.1016/j.envpol.2022.119400 [doi]
PST - ppublish
SO  - Environ Pollut. 2022 Aug 1;306:119400. doi: 10.1016/j.envpol.2022.119400. Epub 
      2022 May 4.