Evidence map›Paper›PMID 36214905›Full record

ArticleBiodegradation2022

Enhanced biodegradation of oil-contaminated soil oil in shale gas exploitation by biochar immobilization.

Hongyang Ren, Yuanpeng Deng, Liang Ma, Zijing Wei, Lingli Ma, Demin Yang, Bing Wang, Zheng-Yu Luo

Abstract read
PubMed Publisher
In one paragraph

Article in Biodegradation, 2022. 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 33% 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, 17 citations in OpenAlex.

  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

8 authors at 3 institutions in 1 country.

Hongyang RenCollege of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, 610500, China. rhyswpu@163.com.
Yuanpeng DengCollege of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, 610500, China.
Liang MaDepartment of Quality, Health, Safety and Environmental Protection, PetroChina Zhejiang Oilfield Company, Hangzhou, 310000, People's Republic of China.
Zijing WeiCollege of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, 610500, China.
Lingli MaEcological and Environmental Monitoring Center of Chongqing, Chongqing, 401147, China.
Demin YangNational Joint Local Engineering Research Center for Shale Gas Exploration and Development, Chongqing Institute of Geology and Mineral Resources, Chongqing, 401120, China.
Bing WangCollege of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, 610500, China.
Zheng-Yu LuoState Environmental Protection Key Laboratory of Collaborative Control and Remediation of Soil and Water Pollution, Chengdu, 610059, China.
Southwest Petroleum University · CNBeijing Municipal Ecological and Environmental Monitoring Center · CNChongqing Institute of Geology and Mineral Resources · CN

Funding

Open Fund of Key Laboratory of Shale Gas Exploration, Ministry of Natural Resources, Chongqing Institute of Geology and Mineral Resources KLSGE-MLR-202004Open Fund of State Environmental Protection Key Laboratory of Collaborative Control and Remediation of Soil and Water Pollution GHBK-003Opening Project of Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province YQKF202107Science and Technology Cooperation Project of the CNPC-SWPU Innovation Alliance 2020CX020300
6 · The paper itself

Abstract

The enhanced biodegradation of oil-contaminated soil by fixing microorganisms with corn cob biochar was investigated. It was found that the components of oil in the test soil were mainly straight-chain alkanes and branched alkanes. When using corn cob biochar as a carrier to immobilize microorganisms, the best particle size of corn cob biochar as an immobilization carrier was 0.08 mm, and the best immobilization time was 18 h. SEM analysis confirmed that the microorganisms were immobilized on the corn cob biochar. Immobilized microorganisms exhibited high biodegradability under stress to high concentrations of petroleum pollutants, heavy metals, and organic pollutants. Infrared spectroscopy analysis showed that oxygen-containing groups such as hydroxyl, carboxyl, and methoxy on the surface of biochar were involved in the complexation of heavy metals. The mechanism of immobilization promoted microbial degradation of oil contamination was explained by gas chromatography mass. First, alkanes and aromatics were adsorbed by corn cob biochar and passed to immobilized microorganisms to promote their degradation. Their bioavailability increased, especially for aromatics. Second, biochar provided a more suitable environment for microorganisms to degrade. Third, the conversion of ketones to acids was accelerated during the biodegradation of alkanes, and the biodegradation of alkanes was accelerated by immobilization. The biodegradable efficiency of oil by immobilized microorganisms in soil was 70.10% within 60 days, 28.80% higher than that of free microorganisms. The degradation of immobilized microorganisms was highly correlated with the activities of catalase, urease, and polyphenol oxidase.

Indexed as

Metals, HeavyPetroleumSoil PollutantsAlkanesBiodegradation, EnvironmentalCatalaseCatechol OxidaseCharcoalKetonesNatural GasOxygenSoilSoil MicrobiologyUreaseAlkanesbiocharCatalaseCatechol OxidaseCharcoalKetonesMetals, HeavyNatural GasOxygenPetroleumSoilSoil PollutantsUreaseBioremediationCorn cob biocharImmobilizationOil-contaminated soilsSoil dehydrogenase

Identifiers

PMID36214905
OpenAlexW4303986665

What OpenQuestion holds

Textmetadata
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.