Collegial effect of maggots larvae and garbage enzyme in rapid composting of food waste with wheat straw or biomass waste

Negi, Suraj; Mandpe, Ashootosh; Hussain, Athar; Kumar, Sunil

doi:10.1016/j.jclepro.2020.120854

Cited by 44 publications

(25 citation statements)

References 20 publications

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“…1b). Both pH values uctuated as the following trend: slowly decreased at the rst 2 days, probably due to the mineralization of the highly biodegradable OM, leading to the acidi cation of the compost piles, and NH 3 volatilization; then increased sharply until the 6th day, due to the degradation of the biodegradable OM, such as the nitrogen-contain complex, and the enhancement of the ammoni cation; with a quick decrease after this day until the end of the composting process, due to nitri cation, an acidi cation process (Negi et al 2020;Zhang et al 2020).…”

Section: Resultsmentioning

confidence: 99%

“…Nitrate reduction and sulfate reduction were two important pathways involved in the ammonia and H 2 S emission over large scales and potentially widespread in the world (Zhang et al 2020;Toledo et al 2018;Negi et al 2020). However, both reductions compete the electron donor, such as OM, to reduce NO 3 − and SO 4 2− (Zhang et al 2020;Kuypers et al 2018).…”

Section: Nh and H 2 S Emission During The Composting Processmentioning

confidence: 99%

See 1 more Smart Citation

Bioaugmentation mitigates ammonia and hydrogen sulfide emissions during the mixture compost of dewatered sewage sludge and reed straw

Cheng

Zhang

Wang

et al. 2021

Preprint

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This study investigated the effectiveness of bio-augmenting aerobic cell culture to mitigate ammonia and hydrogen sulfide emission in sewage sludge composting amended with reed straw (with the weight ratio of 1:0.3–0.4). During the 20-day aerated lab-scale composting, adding 200 mL culture (56.80 NTU) reduced ammonia and hydrogen sulfide emissions by 38.00 % and 54.32 %, and conserved total nitrogen and sulfate by 39.42 % and 70.75 %, respectively. Organic matters degradation was quick started 1 day ahead. Comparing to the control, nitrate content increased 38.75 % at the end of the compost. Bioaugmentation evened the distributions of bacterial communities in the thermophilic phase. The shift was mainly due to 22.97 % of relative abundance of Proteobacteria depressed and 157.16 % of Bacteroidetes increased, which were benefit for nitrogen conservation and glycan breakdown, respectively. In summary, the results demonstrated that bioaugmentation addition could be an effective strategy for enhanced sludge composting.

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Section: Resultsmentioning

confidence: 99%

Section: Nh and H 2 S Emission During The Composting Processmentioning

confidence: 99%

Bioaugmentation mitigates ammonia and hydrogen sulfide emissions during the mixture compost of dewatered sewage sludge and reed straw

Cheng

Zhang

Wang

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Organic matter loss and gas emission in the compost As a microbial-mediated process, OM loss (OML) and gas emission could be described by a rst-order kinetic model. The rate of OM mineralization and the production pro les of cumulative NH 3 and H 2 S re ected the nature of the exponential growth curve (Negi et al 2020). OML and the cumulative yield of gas were calculated as the following (Paredes et al 2001;Bernal et al 1996;Santos et al 201b;Negi et al 2020):…”

Section: Discussionmentioning

confidence: 99%

“…The compost process involved complex physic-chemical interactions between the organic matter (OM) and decomposer. The decomposition of organic matter could be accelerated by a mixed population of microorganisms in a warm and moist environment (Kuypers et al 2018;Zhao et al 2019;Negi et al 2020). Some organic matters were mineralized to carbon dioxide (CO 2 ), ammonia (NH 3 ) and water, and others were transformed to nutrient-rich, humus-like materials (Shou et al 2019;2017;Doloman et al 2020;Du et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Bioaugmentation mitigates ammonia and hydrogen sulfide emissions during the mixture compost of dewatered sewage sludge and reed straw

Cheng

Zhang

Wang

et al. 2021

Environ Sci Pollut Res

View full text Add to dashboard Cite

This study investigated the effectiveness of bio-augmenting aerobic cell culture to mitigate ammonia and hydrogen sul de emission in sewage sludge composting amended with reed straw (with the weight ratio of 1:0.3-0.4). During the 20-day aerated lab-scale composting, adding 200 mL culture (56.80 NTU) reduced ammonia and hydrogen sul de emissions by 38.00 % and 54.32 %, and conserved total nitrogen and sulfate by 39.42 % and 70.75 %, respectively. Organic matters degradation was quick started 1 day ahead. Comparing to the control, nitrate content increased 38.75 % at the end of the compost.Bioaugmentation evened the distributions of bacterial communities in the thermophilic phase. The shift was mainly due to 22.97 % of relative abundance of Proteobacteria depressed and 157.16 % of Bacteroidetes increased, which were bene t for nitrogen conservation and glycan breakdown, respectively. In summary, the results demonstrated that bioaugmentation addition could be an effective strategy for enhanced sludge composting.

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“…Composting as a valuable technology, is also widely used in recycling agricultural organic wastes. This converts organic matter into a relatively stable humus-like substance through microbial transformation [41,42]. Soil quality can be improved by using compost in place of chemical fertilizer, which is critical in the development of circular agriculture.…”

Section: Balance In Economy and Environmentmentioning

confidence: 99%

An Optimization Scheme of Balancing GHG Emission and Income in Circular Agriculture System

Sheng

Jing

et al. 2021

Sustainability

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With the rapid development of circular agriculture in China, balancing agricultural income and environmental impact by adjusting the structure and scale of circular agriculture is becoming increasingly important. Agriculture is a major source of greenhouse gas and income earned from agriculture drives sustainable agricultural development. This paper built a multi-objective linear programming model based on greenhouse gas emission and agricultural product income and then optimized the structure and scale of circular agriculture using Beiqiu Farm as a case study. Results showed that greenhouse gas emission was mainly from manure management in livestock industry. While the agriculture income increased by 64% after optimization, GHG emission increased by only 12.3%. The optimization made full use of straw, manure and fodder, but also minimized soil nitrogen loss. The results laid a generalized guide for adjusting the structure and scale of the planting and raising industry. Measures for optimizing the management of manure were critical in achieving low agricultural carbon emissions in future agricultural development efforts.

show abstract

Collegial effect of maggots larvae and garbage enzyme in rapid composting of food waste with wheat straw or biomass waste

Cited by 44 publications

References 20 publications

Bioaugmentation mitigates ammonia and hydrogen sulfide emissions during the mixture compost of dewatered sewage sludge and reed straw

Bioaugmentation mitigates ammonia and hydrogen sulfide emissions during the mixture compost of dewatered sewage sludge and reed straw

Bioaugmentation mitigates ammonia and hydrogen sulfide emissions during the mixture compost of dewatered sewage sludge and reed straw

An Optimization Scheme of Balancing GHG Emission and Income in Circular Agriculture System

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