Evidence map›Paper›PMID 34558049›Full record

ArticleEnvironmental science and pollution research international2022

Effect of additives on the remediation of arsenic and chromium co-contaminated soil by an electrokinetic-permeable reactive barrier.

Chunzi Ma, Jiangpeng Li, Wei Xia, Ying Ding, Liting Zhang, Yunfeng Xu

Abstract read
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Article in Environmental science and pollution research international, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Chunzi MaSchool of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China.
Jiangpeng LiSchool of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China.
Wei XiaSchool of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China.
Ying DingSchool of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China.
Liting ZhangSchool of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China.
Yunfeng XuSchool of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China. yfxu@shu.edu.cn.

Funding

Innovative Research Team in University IRT13078National Natural Science Foundation of China 21878183
6 · The paper itself

Abstract

To enhance the remediation efficiency of arsenic (As) and chromium (Cr)co-contaminated soil, the effect of various combinations of reducing and chelating agents on the removal of As and Cr was studied in the present work by using electrokinetic technology coupled with a permeable reactive barrier (EK-PRB). In an experiment with EK-PRB, reducing agents (ascorbic acid and citric acid) and chelating agents (EDTA-2Na) were applied together with CaAl-layered double hydroxide (CaAl-LDH) to pretreat As and Cr co-contaminated soil. The chelating agents increased the removal efficiency of As and Cr, while the reducing agent only improved As removal in co-contaminated soil. The best removal efficiencies of As and Cr were 41.2% and 46.8%, respectively. The reducing agents promoted the production of As(III) and enhanced the migration of As. However, a large amount of Cr(VI) was reduced to Cr(III), which affected the migration of Cr. Although the addition of chelating agents partly increased the migration of Cr(III), the removal of total chromium (TCr) still decreased. In this remediation system, a PRB can effectively capture and fix As and Cr. The results indicated that As was mainly adsorbed on the surface of CaAl-LDH, while the surface adsorption and intercalation of CaAl-LDH were the main mechanisms for Cr.

Indexed as

ArsenicEnvironmental Restoration and RemediationSoil PollutantsChromiumKineticsSoilArsenicChromiumSoilSoil PollutantsAs and Cr co-contaminated soilCaAl-LDHChelating agentElectrokinetic-permeable reactive barrierReductant

Identifiers

PMID34558049

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.