Evidence map›Paper›PMID 32326056›Full record

ArticleInternational journal of environmental research and public health2020

The Immobilization Effect of Natural Mineral Materials on Cr(VI) Remediation in Water and Soil.

Dading Zhang, Yanqiu Xu, Xiaofei Li, Lina Wang, Xuwen He, Yan Ma, Dexun Zou

Open access · goldAbstract 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
0.8field-weighted citation impact, top 30% of its field
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, 13 citations in OpenAlex.

  1. Article
  2. Successful Outcome of Phytostabilization in Cr(VI) Contaminated Soils Amended with Alkalizing Additives.International journal of environmental research and public health · 2020
    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

7 authors at 2 institutions in 1 country.

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.
Lina WangSchool of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, 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.
China University of Mining and Technology · CNBeijing University of Chemical Technology · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The effects of sepiolite, montmorillonite, and attapulgite on the removal and immobilization of Cr(VI) in water and soil were studied. X-ray diffraction (XRD) characterizations showed that the purities of these three mineral materials decreased in the following order: montmorillonite > attapulgite > sepiolite, and that their surface molecular bond types were similar. The adsorption potential of Cr(VI) in aqueous solutions of the three mineral materials was in the following order: sepiolite > attapulgite > montmorillonite. The adsorption mechanism for attapulgite was consistent with the Freundlich isotherm adsorption model, whereas that for montmorillonite was more consistent with the Langmuir model. Sepiolite had a good fitting effect for both isothermal adsorption models. For montmorillonite and attapulgite, a lower pH corresponded to a higher removal of Cr(VI). For sepiolite, however, the removal efficiency of Cr(VI) from an aqueous solution was the lowest at a pH of approximately 5.0. The results of the soil toxicity characteristic leaching procedure showed that, following the addition of 15% sepiolite, attapulgite, or montmorillonite to the contaminated soil, Cr(VI) concentrations in the leachates decreased by 16.8%, 18.9%, and 15.9%, respectively, and the total Cr concentrations in the leachates were reduced by 21.2%, 29.2%, and 17.6%. Of the three mineral materials, attapulgite demonstrated the highest Cr(VI) immobilization efficiency in soil. This study emphasizes the effect of attapulgite on the immobilization of Cr(VI) in soil and aqueous solutions, thus providing a theoretical basis for the potential application of natural mineral material remediation of Cr(VI)-contaminated aqueous solutions and soils.

Indexed as

AdsorptionBentoniteChromiumEnvironmental Restoration and RemediationMagnesium CompoundsMagnesium SilicatesSilicon CompoundsSoilSoil PollutantsWaterWater Pollutants, ChemicalattapulgiteBentoniteChromiumchromium hexavalent ionMagnesium CompoundsMagnesium Silicatesmagnesium trisilicateSilicon CompoundsSoilSoil PollutantsWaterWater Pollutants, Chemicaladsorption modelCr(VI) pollutionmineral materialssoiltoxicity characteristic leaching procedure

Identifiers

PMID32326056
PMCPMC7215358
OpenAlexW3016897912

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.