Journal
BIORESOURCE TECHNOLOGY
Volume 348, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2022.126828
Keywords
Lignocellulosic biomass; Pretreatment; Carbonization; Biochar; Diazinon; Adsorption
Funding
- Rural Development Administration , Republic of Korea [PJ0150532021]
- Korea Institute of Planning and Evaluation for Technology in Food, Agriculture and Forestry (IPET) through Agricultural Energy Self-Sufficient Industrial Model Development Program - Ministry of Agriculture, Food and Rural Affairs (MAFRA) [321004021HD030]
- Institute of Planning & Evaluation for Technology in Food, Agriculture, Forestry & Fisheries (iPET), Republic of Korea [321004021HD030] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this study, hemicellulose was effectively removed from biomass using sulfuric acid pretreatment, resulting in the production of biochar with an aromatic and graphitized structure. Biochar derived from pretreated biomass had a higher specific surface area and more micropores, leading to a higher removal rate of diazinon in soil.
In this study, hemicellulose was mostly removed from biomass (larch and oak) using a sulfuric acid pretreatment. Biochar was then prepared from raw and pretreated biomass using a carbonization process. Biochar derived from pretreated biomass had an aromatic and graphitized structure, and functional groups were observed on the surface. The specific surface area was higher for biochar obtained from pretreated biomass than biochar derived from raw biomass. The biochar obtained from pretreated biomass contained a greater number of micropores than biochar derived from raw biomass. The diazinon removal rate was the highest for biochar that was obtained from pretreated biomass when 10% of the biochar was added to the soil. As a result of the adsorption of diazinon onto the biochar obtained from pretreated biomass, the R-2 value of the Langmuir isotherm was higher than that of the Freundlich's R-2.
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