The process of biotransformation can produce insect protein and promote the effective inactivation of heavy metals

Xu, Hanjing; Hong, Chen; Yao, Yanlai; Liu, Lijun; Wang, Weiping; Zhu, Wenjie; Hong, Leidong; Weng, Jian‐Quan; Zhu, Fang

doi:10.1016/j.scitotenv.2021.145864

Cited by 9 publications

(1 citation statement)

References 41 publications

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“…Owing to the development of large-scale intensive poultry farms, the surrounding environment, especially the quality of shallow groundwater, is commonly affected. In fact, approximately 3.8 billion tons of manure associated with animals are produced in China annually [1]. In addition to the high organic matter content in undigested feed, including proteins, amino acids, and other nitrogen-containing substances, manure from poultry usually contains high concentrations of trace elements and agents of infection [2][3].…”

Section: Introductionmentioning

confidence: 99%

Hydrochemical Characteristics and Quality Assessment of Shallow Groundwater in Poultry Farming Sites in Suzhou City, China

Chen¹,

Gui²,

Li³

et al. 2022

Pol. J. Environ. Stud.

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In recent years, the impact of the excrement from large-scale poultry farms on the quality of shallow groundwater has attracted widespread attention. In the present study, the hydrogeochemical characteristics of shallow groundwater around poultry farming sites in the town of Zhuxianzhuang in Suzhou, Northern Anhui, China, were investigated using various statistical techniques, a Piper trilinear diagram, ion combination ratios, correlation analysis, and a fuzzy comprehensive evaluation method. The results show that the shallow groundwater in the area is dominantly of the HCO 3 -Ca type. The relative abundances of the major cations and anions in the groundwater are in the order Na + >Ca 2+ >Mg 2+ >K + and HCO 3According to the concentrations and distribution of tri-nitrogen in the groundwater, pollution is mainly associated with domestic wastewater, followed by poultry farm waste. The most severe pollution involves NO 2 -N, and this adversely impacts the potability of the shallow groundwater. The leaching of rocks and silicate weathering are the principal processes responsible for the ionic composition of the shallow groundwater in the study area. Class I, II, and III waters account for 9.52%, 28.57%, and 61.90%, respectively, of the groundwater in the area. The shallow groundwater is suitable for high salinity-tolerant plants or soils associated with good leaching conditions. Future water management in the poultry farming area should prioritize the control of shallow groundwater nitrite pollution.

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Section: Introductionmentioning

confidence: 99%

Hydrochemical Characteristics and Quality Assessment of Shallow Groundwater in Poultry Farming Sites in Suzhou City, China

Chen¹,

Gui²,

Li³

et al. 2022

Pol. J. Environ. Stud.

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Innovative Solutions Towards Achieving Comprehensive Restoration of Petroleum-Contaminated Soils

Shen,

Feng,

et al. 2024

Chem Technol Fuels Oils

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Use of Additives in Composting Promotes Passivation and Reduction in Bioavailability of Heavy Metals (HMs) in Compost

Ejileugha,

Onyegbule,

Osuoha

2023

Reviews Env.Contamination (formerly:Residue Reviews)

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Composting influences heavy metal (HM) speciation by transforming the exchangeable and reducible forms of HMs to oxidisable and residual forms, promoting the redistribution of HMs to a more stable form thereby reducing their mobility, leachability, and bioavailability. This enhances HM passivation hence reducing environmental contamination and possible HM-related toxicity. In this review, we explored the impact of additives/ameliorants on HM passivation during composting and the reduction in HM bioavailability in compost. Using additives in composting improved the passivation of HMs and reduced the bioavailability through several mechanisms. Additives may not reduce total HM concentration but reduce the bioavailable concentration, which is of importance in risk assessment. However, vermicomposting is exceptional, as it reduces total HM concentration. Improving humification and microbial activity is at the heart of HM passivation in composting. Overall, conditions and substances that promote humification, thermophilic phase, and improve microbial community structure enhance HM passivation in compost. Combining suitable composting additives depending on HMs of interest and vermicomposting the final compost is most likely to yield the best result in reducing HM bioavailability cum total concentration to achieve a safe final product.

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The process of biotransformation can produce insect protein and promote the effective inactivation of heavy metals

Cited by 9 publications

References 41 publications

Hydrochemical Characteristics and Quality Assessment of Shallow Groundwater in Poultry Farming Sites in Suzhou City, China

Hydrochemical Characteristics and Quality Assessment of Shallow Groundwater in Poultry Farming Sites in Suzhou City, China

Innovative Solutions Towards Achieving Comprehensive Restoration of Petroleum-Contaminated Soils

Use of Additives in Composting Promotes Passivation and Reduction in Bioavailability of Heavy Metals (HMs) in Compost

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