Evaluate the role of biochar during the organic waste composting process: A critical review

Ky, Nguyen Minh; Lin, Chitsan; Hoang, Hong-Giang; Sanderson, Peter; Dang, Bao Trong; Bui, Xuan‐Thanh; Nguyen, Ngoc Son Hai; Vo, Dai‐Viet N.; Tran, ‬Huu-Tuan

doi:10.1016/j.chemosphere.2022.134488

Cited by 101 publications

(38 citation statements)

References 134 publications

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“…Bicarbonate in manure may (opposite to the effect of sulphuric acid) cause higher losses of NH 3 . The reduction in nitrogen losses due to its immobilization during co-composting with carbonaceous biochar-derived materials, referred to by ( Wang et al., 2018 ; Nguyen et al., 2022 ), could also be involved.…”

Section: Discussionmentioning

confidence: 99%

Co-composting of cattle manure with biochar and elemental sulphur and its effects on manure quality, plant biomass and microbiological characteristics of post-harvest soil

et al. 2022

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Improvement of manure by co-composting with other materials is beneficial to the quality of the amended soil. Therefore, the manure was supplied with either biochar, elemental sulphur or both prior to fermentation in 50 L barrels for a period of eight weeks. The manure products were subsequently analyzed and used as fertilizers in a short-term pot experiment with barley fodder (Hordeum vulgare L.). The experiment was carried out under controlled conditions in a growth chamber for 12 weeks. The sulphur-enriched manure showed the lowest manure pH and highest ammonium content. The co-fermentation of biochar and sulphur led to the highest sulphur content and an abundance of ammonium-oxidizing bacteria in manure. The biochar+sulphur-enriched manure led to the highest dry aboveground plant biomass in the amended soil, whose value was 98% higher compared to the unamended control, 38% higher compared to the variant with biochar-enriched manure and 23% higher compared to the manure-amended variant. Amendment of the sulphur-enriched manure types led to the highest enzyme activities and soil respirations (basal, substrate-induced). This innovative approach to improve the quality of organic fertilizers utilizes treated agricultural waste (biochar) and a biotechnological residual product (elementary sulphur from biogas desulphurization) and hence contributes to the circular economy.

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Section: Discussionmentioning

confidence: 99%

Co-composting of cattle manure with biochar and elemental sulphur and its effects on manure quality, plant biomass and microbiological characteristics of post-harvest soil

et al. 2022

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“…Our findings and analysis of variance revealed substantial variations in nitrogen concentration between P1 and P3 ( p < 0.001) as well as between P2 and P3 ( p < 0.05). Although pH is not a critical element in composting, it is essential in reducing N-losses due to volatilization, which can be relatively high at pH > 7.5 [ 53 ].…”

Section: Discussionmentioning

confidence: 99%

On-Farm Composting of Agricultural Waste Materials for Sustainable Agriculture in Pakistan

et al. 2022

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Agriculture is the economic backbone of Pakistan. 67% of country’s population resides in rural areas and primarily depends on agriculture. Pakistan's soils are poor in OM and have a low C : N ratio, and the overall fertility status is insufficient to support increased crop yields. Compost is an excellent alternative solution for improving soil OM content. However, this excellent alternative supply in Pakistan has yet to be used. Mass volumes of leaves, grass clippings, plant stalks, vines, weeds, twigs, and branches are burned daily. In this study, different compost piles (P1, P2, and P3) of compost were made using different agricultural and animal waste combinations to assess temperature, pH, and NPK. Results revealed that P3 demonstrated the most successful composting procedure. The temperature and pH levels throughout the composting process were determined in a specified range of 42–45oC and 6.1–8.3, respectively. Total nitrogen content ranged from 81.5 to 2175 ppm in farm compost. Total phosphorus concentrations range from 1.33 to 13.98 ppm, and potassium levels, on the other hand, range from 91.53 to 640 ppm in farm compost. The overall nitrogen concentration grew progressively between each pile at the end of a week. The varied concentrations revealed that adding various forms of agricultural waste would result in a variation in the quantity of NPK owing to microbial activity. On-farm composting has emerged as an effective technique for the sustainability of agricultural activities, capable of resolving crucial problems like crop residues and livestock waste disposal. Based on this study’s results, the pile (P3) combination shows the best NPK value performance and is recommended for agricultural uses to overcome the OM deficiency.

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“…Furthermore, by immobilizing degrading bacteria and enriching cell concentration, biochar with strong electrical conductivity might promote organic matter decomposition. At a concentration of 10 g/L, a 21% improvement in methane production has been documented [63]. When compared to fine biochar, porous biochar promotes biofilm formation, while coarse biochar with a smaller specific surface area improves methane generation.…”

Section: Carbon-based Nanomaterialsmentioning

confidence: 99%

Recent Advances and Perspectives of Nanotechnology in Anaerobic Digestion: A New Paradigm towards Sludge Biodegradability

Banu

Sharmila²

2022

Sustainability

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Anaerobic digestion (AD) is the strategy of producing environmentally sustainable bioenergy from waste-activated sludge (WAS), but its efficiency was hindered by low biodegradability. Hence, the usage of nanomaterials was found to be essential in enhancing the degradability of sludge due to its nanostructure with specific physiochemical properties. The application of nanomaterials in sludge digestion was thoroughly reviewed. This review focused on the impact of nanomaterials such as metallic nanoparticles, metal oxide nanoparticles, carbon-based nanomaterials, and nanocomposite materials in AD enhancement, along with the pros and cons. Most of the studies detailed that the addition of an adequate dosage of nanomaterial has a good effect on microbial activity. The environmental and economic impact of the AD enhancement process is also detailed, but there are still many existing challenges when it comes to designing an efficient, cost-effective AD digester. Hence, proper investigation is highly necessary to assess the potency of utilizing the nanomaterials in enhancing AD under various conditions.

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Evaluate the role of biochar during the organic waste composting process: A critical review

Cited by 101 publications

References 134 publications

Co-composting of cattle manure with biochar and elemental sulphur and its effects on manure quality, plant biomass and microbiological characteristics of post-harvest soil

Co-composting of cattle manure with biochar and elemental sulphur and its effects on manure quality, plant biomass and microbiological characteristics of post-harvest soil

On-Farm Composting of Agricultural Waste Materials for Sustainable Agriculture in Pakistan

Recent Advances and Perspectives of Nanotechnology in Anaerobic Digestion: A New Paradigm towards Sludge Biodegradability

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