Thermophilic bacteria and their thermozymes in composting processes: a review

Chemical and Biological Technologies in Agriculture, Journal Year: 2023, Volume and Issue: 10(1)

Published: Jan. 27, 2023

Abstract In this review, the composting process of organic waste is discussed through an in-depth exploring its thermophilic phase. It starts with highlight on thermodynamic evolution, which needs to be assessed when deciding use reactors for composting, also in context energy generation. The mediated by different types microorganisms, and bacteria that play key roles are evaluated. genera Bacillus Thermus considered, often described as main components microbiota compost. Due their adaptation processes, they candidates technological purposes. Subsequentially, focus moved thermostable enzymes can isolated from them succession during processes. Experimental examples enzyme-related literature reviewed, example investigating proteases ureases, found at beginning process. addition, cellulases, hemicellulases, lignin-modifying enzymes, esterases have been activities phase, giving great potential biotechnological industrial applications. Following, composition microbial community analyzed description approaches metagenomics. Despite it being a relatively new but fast-growing field within biology, intended priority analysis acquire knowledge genomes environmental microorganisms communities. Finally, space dedicated plant treats olive oil wastes LIFE TIRSAV PLUS project (LIFE05 ENV/IT/00845). Through two solutions, Dynamic Static Composting, provides high-quality compost effective, flexible economical Graphical

Language: Английский

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Additive facilitated co-composting of lignocellulosic biomass waste, approach towards minimizing greenhouse gas emissions: An up to date review

Environmental Research, Journal Year: 2023, Volume and Issue: 224, P. 115529 - 115529

Published: Feb. 22, 2023

Language: Английский

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Effect of inoculation with newly isolated thermotolerant ammonia-oxidizing bacteria on nitrogen conversion and microbial community during cattle manure composting

Journal of Environmental Management, Journal Year: 2022, Volume and Issue: 317, P. 115474 - 115474

Published: June 4, 2022

Language: Английский

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Improving the ability of thermoelectric generators to absorb industrial waste heat through three-dimensional structure optimization

Applied Thermal Engineering, Journal Year: 2023, Volume and Issue: 228, P. 120480 - 120480

Published: April 5, 2023

Language: Английский

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Effect of aeration rate, aeration pattern, and turning frequency on maturity and gaseous emissions during kitchen waste composting

Environmental Technology & Innovation, Journal Year: 2023, Volume and Issue: 29, P. 102997 - 102997

Published: Jan. 5, 2023

Currently, the increasing output of kitchen waste makes its treatment an urgent problem to be solved. Based on principle resource utilization, we consider improving various process parameters, including aeration rate, mode and turning frequency, analyzing physicochemical indicators, maturity indicators gas emissions, propose comprehensive parameters that can quickly compost, promote reduce emissions. The results showed high rate (> 0.3 L kg −1 DM min −1) reduced temperature matrix increased electrical conductivity germination index thereby inducing strong emissions odors greenhouse gases. Compared with continuous aeration, intermittent was more effective in reducing gaseous under same total volume but characterized by lower maturity. Moreover, it found non-turning substantially, while excessively (once every 2 days) or too low 6 frequency varying degrees. Most frequencies did not significantly compost above indicated rapid composting processes yielded best were 0.2∼0.3 −1, pattern, a once three days. This research great significance improvement combined process.

Language: Английский

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Microbial Sources and Sinks of Nitrous Oxide during Organic Waste Composting

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(17), P. 7367 - 7379

Published: April 22, 2024

Composting is widely used for organic waste management and also a major source of nitrous oxide (N2O) emission. New insight into microbial sources sinks essential process regulation to reduce N2O emission from composting. This study genome-resolved metagenomics decipher the genomic structures physiological behaviors individual bacteria during Results showed that several nosZ-lacking denitrifiers in feedstocks drove at beginning Such became negligible thermophilic stage, as high temperatures inhibited all production except those containing nirK. The were notably enriched increase cooling stage. Nevertheless, biodegradation limited energy availability chemotaxis flagellar assembly restrain nirKS-containing nitrate reduction toward but insignificantly interrupt norBC- nosZ-containing (particularly nondenitrifiers) by capturing nitric (NO) production, thereby reducing mature Furthermore, nosZII-type included nondenitrifiers dominated sinks. Thus, targeted strategies can be developed restrict expand taxonomic distribution nosZ effective mitigation

Language: Английский

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Combined addition of biochar, lactic acid, and pond sediment improves green waste composting

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 852, P. 158326 - 158326

Published: Aug. 28, 2022

Language: Английский

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Effects of Microbial Inoculation with Different Indigenous Bacillus Species on Physicochemical Characteristics and Bacterial Succession during Short-Term Composting

Fermentation, Journal Year: 2022, Volume and Issue: 8(4), P. 152 - 152

Published: March 29, 2022

Bacillus accelerates lignocellulose degradation, promotes the stabilization and resource utilization of compost by secreting enzymes, plays an important role in formation quality control. This study evaluated enzyme activity, lignocellulosic bacterial succession composting inoculated with different microbial agents. They were identified as B. licheniformis, subtilis, thermoamylovorans, thermoruber, hisashii. Four treatments established, including a CK (uninoculated microorganisms), A (B. thermoamylovorans,and hisashii), B C lasted 7–14 days. Lignin cellulose degradation rates during 17.1% 36.7% at cooling stage, respectively. Redundancy analysis showed that thermophilic stage was mainly related to secretion lignocellulose-degrading enzymes after inoculation. 16S rRNA sequencing revealed (20.3%) Thermobifida (20.2%) dominant genera. Inoculation combination thermoruber feasible way increase promote maturity sewage sludge composting.

Language: Английский

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Hyperthermophilic pretreatment significantly accelerates thermophilic composting humification through improving bacterial communities and promoting microbial cooperation

Bioresource Technology, Journal Year: 2023, Volume and Issue: 385, P. 129467 - 129467

Published: July 8, 2023

Language: Английский

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In-situ electrolytic oxygen is a feasible replacement for conventional aeration during aerobic composting

Journal of Hazardous Materials, Journal Year: 2021, Volume and Issue: 426, P. 127846 - 127846

Published: Nov. 20, 2021

Language: Английский

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