Analyzing nutrient distribution in different particle-size municipal aged refuse

Li, Guangke; Hou, Fen; Guo, Zhao‐Xia; Yao, Gaoyi; Sang, Nan

doi:10.1016/j.wasman.2011.06.010

Cited by 13 publications

(7 citation statements)

References 15 publications

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“…Accordingly, the physical characteristics of aged refuse and its enriched microbial communities that can contribute to the degradation of pollutants or reduction of pollutant toxicity make it a potential green resource that can be applied in the restoration of degraded soil and water (Liu et al, 2018; Madanan et al, 2021; Pandey & Bhatt, 2016; Sathya et al, 2020). Moreover, aged refuse has potential utility as a source of cultivable soil, with different grades being used to enhance the quality of nutrient‐poor soils (G. Li et al, 2011; G. Li et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Toxicity effects of aged refuse on Tagetes patula and rhizosphere microbes

Hou

Yuan

et al. 2022

Land Degrad Dev

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Aged refuse, also named mineralized refuse, refers to garbage that has been buried in landfills for many years, has basically stabilized and can be mined and utilized. In this study, we examined the effects of different mass ratios of aged refuse on Tagetes patula and rhizosphere microbes. Compared to growth in ordinary soil, growth in aged refuse or mixed soil with aged refuse significantly increased chlorophyll content, activities of superoxide dismutase, catalase, and peroxidase, while it decreased malondialdehyde levels and protein carbonyl content in leaf tissue of Tagetes patula.Aged refuse was found to be enriched in a variety of rhizosphere microbes that contribute to pollutant degradation, although microbial diversity was found to be relatively low. Bacterial genera such as Ferruginibacter, Hymenobacter, unclassified_Gemmataceae, Longimicrobium, Tychonema CCAP 1459-11B, Gemmatirosa, and Rubellimicrobium were depleted in soil: aged refuse groups compared with ordinary soil. Correspondingly, bacterial genera such as Emticicia, Caedibacter, Anaerosalibacter, Tumebacillus, Patulibacter, Oceanotoga, Dyadobacter, Chloroflexus, and Acidobacteria bacterium SCN 69-37, Polycyclovorans, were enriched in soil: aged refuse groups compared with ordinary soil. Furthermore, rhizosphere microbe functions changed markedly following the addition of aged refuse. These findings indicate that aged refuse may represent a source of environmental stress for plants and modifies the dominant bacterial composition of rhizosphere microbes. There were underlying close associations among pollutants, plant physiological stress responses, and rhizosphere microbial community composition.With respect to identifying potential approaches to recycling aged refuse, it will be necessary to focus on selecting optimal mass ratios of aged refuse and ordinary soil to control contaminant exposure.

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Section: Introductionmentioning

confidence: 99%

Toxicity effects of aged refuse on Tagetes patula and rhizosphere microbes

Hou

Yuan

et al. 2022

Land Degrad Dev

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“…Previous studies have shown that after approximately 10 years of burial, the degradable substances in a landfill are fully broken down, and the natural gas or leachate has reached a low level [4,5]. The aged refuse at this stabilized or mature stage has the potential to be utilized in many ways; for instance, it has certain characteristics of fertile soil and can be used for the adsorption treatment of pollutants [6,7]. In recent years, there have been many reports on the use of aged refuse in landfill leachate, water pollution, and biological reaction vessels [6,[8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Microbial Communities in Aged Refuse Based on 16S Sequencing

Hou

Yuan

et al. 2021

Sustainability

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Aged refuse is widely considered to have certain soil fertility. 16S rRNA amplicon sequencing is used to investigate the microbial community of aged refuse. The aged refuse is found to contain higher soil fertility elements (total nitrogen, total phosphorus, total potassium, etc.) and higher concentrations of heavy metals (Pb, Cd, Zn, and Hg). Taxonomy based on operational taxonomic units (OTUs) shows that Actinobacteria, Proteobacteria, Chloroflexi, Acidobacteria, and Gemmatimonadetes are the main bacterial phyla in the two soils and there is a palpable difference in the microbial community composition between the two groups of samples. The genera Paramaledivibacter, Limnochorda, Marinobacter, Pseudaminobacter, Kocuria, Bdellovibrio, Halomonas, Gillisia, and Membranicola are enriched in the aged refuse. Functional predictive analysis shows that both the control soil and aged refuse have a high abundance of “carbohydrate metabolism” and “amino acid metabolism”, and show differences in the abundance of several metabolism pathways, such as “xenobiotics biodegradation and metabolism” and “lipid metabolism”. Aged refuse and undisturbed soil show significant differences in alpha diversity and microbial community composition. Multiple environmental factors (Hg, TN, Cr, Cd, etc.) significantly impact microorganisms’ abundance (Marinobacter, Halomonas, Blastococcus, etc.). Our study provides valuable knowledge for the ecological restoration of closed landfills.

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“…Several authors including [6][7][8][9] and many others identified landfilling as one of the major solid waste disposal system in developing countries. However, due to the increasing rate of solid waste generation, most landfill sites are exhausted and the large area required for selecting landfill site has necessitated the need to recycle landfilled refuse [10].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, researchers have focused on exploiting the characteristics of available surface area and abundance of microbes in aged refuse to design bio-filters for treating landfill leachate and various wastewaters [10,[19][20][21][22] and the results obtained were satisfactory as well as cost reduction when compared with traditional methods. Also, the excavated aged refuse could be used as regular cover material, nutrient for soil, and processed constructing material.…”

Section: Introductionmentioning

confidence: 99%