Evidence map›Paper›PMID 40594874›Full record

ArticleScientific reports2025

Insight of biological transformation process in the anaerobic codigestion of kitchen waste with landfill site closure leachate.

Zhang Jun, Zeng Fan, Liao Xiaofeng, Li Han, Chen Hao, Liao Li, Xu Xiaowei

Abstract read
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

7 authors.

Zhang Jun *Ministry of Ecology and Environment of China Nanjing, Nanjing Institute of Environmental Sciences, Jiangsu, CN210042, People's Republic of China.
Zeng Fan *School of Environmental Engineering, Nanjing Institute of Technology, No. 1 Hongjing Avenue Jiangning Science Park, Nanjing, Jiangsu, CN211167, People's Republic of China. zf85@njit.edu.cn.
Liao XiaofengSinosteel Safety and Environmental Protection Research Institute Co., Ltd, Wuhan, Hubei, CN430081, People's Republic of China. 304621381@qq.com.
Li HanSchool of Environmental Science & Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wu Han, CN430074, China.
Chen HaoSchool of Environmental Science & Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wu Han, CN430074, China.
Liao LiSchool of Environmental Science & Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wu Han, CN430074, China.
Xu XiaoweiMinistry of Ecology and Environment of China Nanjing, Nanjing Institute of Environmental Sciences, Jiangsu, CN210042, People's Republic of China.

Funding

Central Public-interest Scientific Institution Basal Research Fund NO. GYZX240406
6 · The paper itself

Abstract

A 5-month anaerobic co-digestion was conducted using landfill site closure leachate as the inoculum stock solution and kitchen waste as the digestion material. This study investigated biogas production at varying kitchen waste loading rates, as well as changes in humic substances and microbial diversity in the digestate. The results demonstrated that when the waste loading rate was ≤ 2% (%w/w, dry mass ratio of kitchen waste) , the anaerobic co-digestion system efficiently degraded the kitchen waste, with over 90% of total gas production occurring within one day after the experiment commenced, indicating the rapid completion of the gasification process. The analysis of the digestate from the anaerobic co-digestion showed that the humic substance content was more than 20 times greater than that of landfill site closure leachate within 1 month, but the value approached the landfill site closure leachate within 5 months. This indicated the biological transformation of kitchen waste into humic substances was completed within 1 month, and these humic substances formed was essentially degraded within 5 months. The anaerobic co-digestion accelerated the process of kitchen waste spoilage. Additionally, the bacterial and archaeal communities in landfill site closure leachate and the digestate from the anaerobic co-digestion were analyzed, revealing that dominant bacterial groups were Proteobacteria(29.73% ~ 58.34%), Firmicutes(12.76% ~ 27.18%), and Bacteroidetes(9.07% ~ 28.17%), while the archaeal community included Methanobacterium(2.73% ~ 38.19%), Methaneta(1.05% ~ 40.09%), Methanosarcina(8.94% ~ 58.07%), and Methanoculleus(0.57% ~ 33.19%). These findings indicate that landfill site closure leachate serves as the primary source of methanogenic bacteria, and external sewage inoculum is unnecessary for the anaerobic co-digestion of landfill site closure leachate and kitchen waste. These research results will offer data support and technical support for the sustainable utilization of organic solid waste.

Indexed as

Refuse DisposalWaste Disposal FacilitiesWater Pollutants, ChemicalAnaerobiosisArchaeaBacteriaBiodegradation, EnvironmentalBiofuelsBioreactorsHumic SubstancesMethaneBiofuelsHumic SubstancesMethaneWater Pollutants, ChemicalAnaerobic co-digestionHumificationKitchen wasteLandfill site closure leachateMethanogenic bacteria

Identifiers

PMID40594874
PMCPMC12219865

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.