Evidence map›Paper›PMID 32825647›Full record

ArticleInternational journal of environmental research and public health2020

Immobilization of Cr(VI) in Soil Using a Montmorillonite-Supported Carboxymethyl Cellulose-Stabilized Iron Sulfide Composite: Effectiveness and Biotoxicity Assessment.

Dading Zhang, Yanqiu Xu, Xiaofei Li, Zhenhai Liu, Lina Wang, Chaojun Lu, Xuwen He, Yan Ma, Dexun Zou

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in International journal of environmental research and public health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

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

2 citing papers in PubMed.

  1. Review
  2. Article
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

9 authors.

Dading ZhangSchool of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China.
Yanqiu XuSchool of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China.
Xiaofei LiCollege of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
Zhenhai LiuCollege of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
Lina WangSchool of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China.
Chaojun LuChinese Research Academy of Environmental Sciences, Beijing 100012, China.
Xuwen HeSchool of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China.
Yan MaSchool of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China.
Dexun ZouCollege of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A novel composite of montmorillonite-supported carboxymethyl cellulose-stabilized nanoscale iron sulfide (CMC@MMT-FeS), prepared using the co-precipitation method, was applied to remediate hexavalent chromium (Cr(VI))-contaminated soil. Cr(VI)-removal capacity increased with increasing FeS-particle loading. We tested the efficacy of CMC@MMT-FeS at three concentrations of FeS: 0.2, 0.5, and 1 mmol/g, hereafter referred to as 0.2 CMC@MMT-FeS, 0.5 CMC@MMT-FeS, and 1.0 CMC@MMT-FeS, respectively. The soil Cr(VI) concentration decreased by 90.7% (from an initial concentration of 424.6 mg/kg to 39.4 mg/kg) after 30 days, following addition of 5% (composite-soil mass proportion) 1.0 CMC@MMT-FeS. When 2% 0.5 CMC@MMT-FeS was added to Cr(VI)-contaminated soil, the Cr(VI) removal efficiency, as measured in the leaching solution using the toxicity characteristic leaching procedure, was 90.3%, meeting the environmental protection standard for hazardous waste (5 mg/kg). The European Community Bureau of Reference (BCR) test confirmed that the main Cr fractions in the soil samples changed from acid-exchangeable fractions to oxidable fractions and residual fractions after 30 days of soil remediation by the composite. Moreover, the main complex formed during remediation was Fe(III)-Cr(III), based on BCR and X-ray photoelectron spectroscopy analyses. Biotoxicity of the remediated soils, using

Indexed as

ChromiumEnvironmental Restoration and RemediationSoil PollutantsBentoniteCarboxymethylcellulose SodiumFerric CompoundsFerrous CompoundsImmobilizationSoilBentoniteCarboxymethylcellulose SodiumChromiumchromium hexavalent ionFerric CompoundsFerrous Compoundsferrous sulfideSoilSoil PollutantsBCR testbiotoxicity assessmentCMC@MMT-FeSpotential toxic metal contaminationsoil remediationtoxicity characteristic leaching procedure

Identifiers

PMID32825647
PMCPMC7503541

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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.