评价硫酸预处理生物质衍生生物炭的特性及其对二嗪磷的吸附机制。
Evaluation of sulfuric acid-pretreated biomass-derived biochar characteristics and its diazinon adsorption mechanism.
机构信息
Department of Wood Science and Engineering, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Republic of Korea.
Department of Wood Science and Engineering, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Republic of Korea; Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju 61186, Republic of Korea.
出版信息
Bioresour Technol. 2022 Mar;348:126828. doi: 10.1016/j.biortech.2022.126828. Epub 2022 Feb 8.
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 value of the Langmuir isotherm was higher than that of the Freundlich's R.
在这项研究中，使用硫酸预处理从生物质（落叶松和橡木）中去除大部分半纤维素。然后使用碳化过程从原始生物质和预处理生物质制备生物炭。预处理生物质衍生的生物炭具有芳构化和石墨化结构，并且在表面上观察到官能团。与源自原始生物质的生物炭相比，源自预处理生物质的生物炭具有更高的比表面积。与源自原始生物质的生物炭相比，源自预处理生物质的生物炭含有更多的微孔。当向土壤中添加 10%的生物炭时，源自预处理生物质的生物炭对二嗪农的去除率最高。由于二嗪农吸附到源自预处理生物质的生物炭上，Langmuir 等温线的 R 值高于 Freundlich 的 R 值。
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