Various pyrolysis approaches to produce biochar from different waste materials as efficient soil conditioners

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26788462%3A_____%2F23%3AN0000074" target="_blank" >RIV/26788462:_____/23:N0000074 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Various pyrolysis approaches to produce biochar from different waste materials as efficient soil conditioners

Original language description

An abstract entitled “Various pyrolysis approaches to produce biochar from different waste materials as efficient soil conditioners” was published in the Book of Abstracts of the XIV International Scientific Agriculture Symposium AgroSym 2023 held on between the 8th to 10th October 2023 in Jahorina (BiH) on page 450. Municipal wastes e.g. sewage sludge (SS) or food waste (FW, from households or catering facilities) are suitable for further utilization but direct application to agricultural soils may led to SS toxicity or greenhouse gases emissions from degraded FW. Various approaches for the pyrolysis into biochar may decrease toxicity and carbon footprint at sustaining nutritional value for agriculture. SS was prepared by low temperature (LESS-THAN OR EQUAL TO 250 oC) short-run microwave pyrolysis, FW by moderate temperature (LESS-THAN OR EQUAL TO 650 oC) long-run thermal pyrolysis. Both wastes were amended with sawdust (SD, 25% w/w). Environmentally safe and nutrient rich final products were obtained with potential to sequester carbon. Fourier Transform Infrared Spectroscopy was used to characterize elemental composition of biochars, which were applied to soil, tested for effects on soil microbial properties (coupled with nutrient transformation), and on plant photosystem II (PSII) efficiency in a pot experiment with lettuce (Lactuca sativa L.). SS+SD led to the highest oxygen and hydrogen content, the highest H:C ratio, whereas FW+SD had the highest carbon, nitrogen content, and the lowest O:C. Application of SS+SD to soil promoted the most enhanced carbon- and nitrogen-coupled enzymatic activities (dehydrogenase DHA, β-glucosidase, urease), whereas FW+SD increased arylsulphatase and induced the least DHA, urease. The lettuce PSII was decreased by FW+SD addition to soil, and preserved by of SS+SD. The benefits of presented approaches to produce biochar via pyrolysis of sewage sludge or food waste (with additives) were evaluated.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

40104 - Soil science

Project

<a href="/en/project/LTI20007" target="_blank" >LTI20007: Ensuring the quality and continuity of project services in international research provided by agrarian research institutions</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů