Effect of biochar addition on the OFMSW composting process under real conditions

Malinowski, Mateusz; Wolny-Koładka, Katarzyna; Vaverková, Magdalena Daria

doi:10.1016/j.wasman.2018.12.011

Cited by 91 publications

(55 citation statements)

References 57 publications

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“…This observed result might be accorded to biochar chemical and biological stability because of its relatively high aromatic structures, high hydrophobicity, and recalcitrant nature to myriads of chemical oxidants . These findings agree with other reports that incorporation of biochar to composting mixture has significant effects on OM and TN losses . Chen et al.…”

Section: Discussionsupporting

confidence: 90%

Biochar reduces nutrient loss and improves microbial biomass of composted cattle manure and maize straw

Bello

Deng

Sheng

et al. 2020

Biotech and App Biochem

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In this study, nutrient loss, the direct and indirect relationship between period, compost types, temperature, total nitrogen (TN), nitrate nitrogen (NO 3 −-N), ammonium nitrogen (NH 4 +-N), microbial biomass carbon (MBC), and microbial biomass nitrogen (MBN) were investigated during composting of cattle manure-maize straw mixture. This study findings revealed that biochar addition lowered NH 4 +-N but did not increase NO 3 −-N concentrations unlike no biochar piles during composting. The first-order kinetic models showed that biochar accelerated organic matter (OM) degradation and improved nitrogen mineralization, consequently reducing TN losses by 13.6% and OM losses by 12.66%. Transformation ratio of MBC/MBN, coupled with other chemical components of the entire microbial community, suggested a shift in the microbial succession and diversity during composting from the dominant bacteria and actinomycetes to fungi. The structural equation model and path coefficient revealed temperature to be the main factor mediating the evolution of MBC and MBN in composting. The physicochemical variables, phytotoxicity, and final product quality revealed that biochar incorporation to the composting feedstock is an ideal material for mitigating problems of TN and OM losses in composting and ultimately enhancing the fertility potential of the final compost product.

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Section: Discussionsupporting

confidence: 90%

Biochar reduces nutrient loss and improves microbial biomass of composted cattle manure and maize straw

Bello

Deng

Sheng

et al. 2020

Biotech and App Biochem

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“…However, it had a notable impact on the degree of the temperature attained during the thermophilic phase (T max (BC 0 ) < T max (BC 10 ) < T max (BC 20 )). Despite this, it should be noted that several researchers have shown a lack of influence of a small amount of biochar on the temperature course and have observed slightly longer thermophilic phases while composting an organic fraction of municipal solid waste [23,29]. According to the hygiene standards of Germany with regard to compost, the thermophilic temperature achieved in the current compost experiments was sufficient to eliminate the threat posed by pathogens.…”

Section: Effect Of Biochar On the Temperature And Moisture Content Evmentioning

confidence: 69%

“…Thus, a great combination and a considerable aspect connecting biochar with agriculture is the composting processes of various organic wastes such as FW and WS in conjunction with biochar [22]. Some trials report testing the addition of biochar, even in small quantities, and the results prove that biochar can change the composting process and the properties of the end product [23]. Studies on biochar report that its performance as a BA plays a crucial role in assuring the aerobic conditions necessary for composting materials [24].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Food Waste and Biochar In-Vessel Co-Composting

et al. 2020

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As bulking agents (BA) affect the composting process, this work examined the impact of combinations of different organic components in order to obtain an efficient co-substrate for food waste (FW) in-vessel composting. To boost the occurrence of microorganisms inhabiting the compost, mature compost was firstly coupled with wheat straw, added to FW, and considered as a control (BC0). Then, two trials (BC10, BC20) including 10% and 20% of biochar were monitored. The results indicated that the temperature of the amended bioreactors was notably increased compared to the unamended one. Thermophilic temperatures were achieved at 14, 34, and 78 h after the experimental setup for BC20, BC10, and BC0, which lasted for 14, 17, and 12 days, respectively. When it came to an assessment of maturity and stability, the quality of the compost was evaluated against several indicators and compared with the compost quality standards of the UK, France, Canada, the USA, Poland, and Germany. BC10 illustrated a high-quality product in relation to the heavy metal concentration, a C:N ratio which reached 14.97, an AT4 which was lower than 6 (4.36 mg O2/g TS), and a nitrification index of 2.61 (<3). Consequently, the addition of 10% of biochar as a co-substrate showed an improvement of the process evolution and the characteristics of the biofertilizer produced.

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“…The impacts to the microbial activity and community by biochar addition included strengthening the activity of most enzymes and bacterial community (10% and 20%) (Du, Zhang, Qu, et al, 2019). Biochar was also shown to reduce heavy metal toxicity, increase moisture content, and reduce waste density in compost including sludge along with food waste, grass, straw, sawdust, mineral waste, paper, wood (Malinowski, Wolny-Koladka, & Vaverkova, 2019).…”

Section: Compostingmentioning

confidence: 99%

Residuals, sludge, and biosolids: Advancements in the field

Brisolara

Gentile

Puszykowski

et al. 2020

Water Environment Research

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Advancements in the field of residuals, sludge, and biosolids have been made in 2019. This review outlines the major contributions of researchers that have been published in peer-reviewed journals and conference proceedings throughout 2019 and includes brief summaries from over 125 articles. The review is organized in sections including life cycle and risk assessments; characteristics, quality, and measurement including micropollutants, nanoparticles, pathogens, and metals; sludge treatment technologies including dewatering, digestion, composting, and wetlands; disposal and reuse including adsorbents, land application and agricultural uses, nutrient recovery, and innovative uses; odor and air emissions; and energy issues.

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Effect of biochar addition on the OFMSW composting process under real conditions

Cited by 91 publications

References 57 publications

Biochar reduces nutrient loss and improves microbial biomass of composted cattle manure and maize straw

Biochar reduces nutrient loss and improves microbial biomass of composted cattle manure and maize straw

Optimization of Food Waste and Biochar In-Vessel Co-Composting

Residuals, sludge, and biosolids: Advancements in the field

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