Enhancement of biomethane production and decomposition of physicochemical structure of corn straw by combined freezing-thawing and potassium hydroxide pretreatment
文献类型：期刊论文
| 作者 | Yang, Luyao1; Li, Xiujin1; Yuan, Hairong1; Yan, Beibei3; Yang, Gaixiu2; Lu, Yao1; Li, Juan1; Zuo, Xiaoyu1 |
| 刊名 | ENERGY
 |
| 出版日期 | 2023-04-01 |
| 卷号 | 268页码:11 |
| 关键词 | Corn straw Anaerobic digestion Freezing-thawing KOH pretreatment Methane |
| ISSN号 | 0360-5442 |
| DOI | 10.1016/j.energy.2023.126633 |
| 通讯作者 | Li, Juan(lijuan19900801@163.com) ; Zuo, Xiaoyu(zuoxy@mail.buct.edu.cn) |
| 英文摘要 | Pretreatment is necessary for improving biodegradability and biomethane production from lignocellulosic materials such as corn straw (CS). In this study, freezing-thawing (FT) method was combined with KOH alkaline pretreatment technology to form a new CS pretreatment that was proposed to enhance anaerobic digestion (AD) performance. The results showed that among all pretreatment conditions, the -20 degrees C + 20 degrees C + KOH pretreatment group showed the best results, in which the biomethane production represented by the unit volatile solids (VS) was 274 mL.g(-1)VS(-1) and the removal rate of VS was 58.5%, which were respectively 39.8% and 33.9% higher than that of untreated CS. Additionally, the reaction mechanism of this combined pretreatment was revealed by the internal structure and chemical bond changes of straw. The ultrastructure and crystal structure of the combined pretreatment showed greater destruction, and the chemical bonds were obviously damaged. This is due to the dissolution of the frozen crystalline structures inside the CS before and after FT. As the dissolution proceeds, the alkaline pretreatment reagent acts synergically on CS, resulting in the increase of methane production. The results indicated that the combination of FT and KOH alkaline pretreatment is a promising method that can greatly improve the biodegradability and methane production of CS. |
| WOS关键词 | ANAEROBIC-DIGESTION PERFORMANCE ; BIOGAS PRODUCTION ; WHEAT-STRAW ; METHANE PRODUCTION ; SOLID-STATE ; MICROBIAL COMMUNITY ; RICE STRAW ; BIOGASIFICATION ; STOVER ; DEGRADATION |
| 资助项目 | National Key R&D Program of China[2018YFE0111000] |
| WOS研究方向 | Thermodynamics ; Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:000993868600001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Key R&D Program of China |
| 源URL | [http://ir.giec.ac.cn/handle/344007/39025]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Li, Juan; Zuo, Xiaoyu |
| 作者单位 | 1.Beijing Univ Chem Technol, Coll Chem Engn, Dept Environm Sci & Engn, 15 Beisanhuan East Rd, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 3.Tianjin Key Lab Biomass Wastes Utilizat, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Luyao,Li, Xiujin,Yuan, Hairong,et al. Enhancement of biomethane production and decomposition of physicochemical structure of corn straw by combined freezing-thawing and potassium hydroxide pretreatment[J]. ENERGY,2023,268:11. |
| APA | Yang, Luyao.,Li, Xiujin.,Yuan, Hairong.,Yan, Beibei.,Yang, Gaixiu.,...&Zuo, Xiaoyu.(2023).Enhancement of biomethane production and decomposition of physicochemical structure of corn straw by combined freezing-thawing and potassium hydroxide pretreatment.ENERGY,268,11. |
| MLA | Yang, Luyao,et al."Enhancement of biomethane production and decomposition of physicochemical structure of corn straw by combined freezing-thawing and potassium hydroxide pretreatment".ENERGY 268(2023):11. |
入库方式： OAI收割
来源：广州能源研究所
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