化学工程2025，Vol.53Issue(10)：1-6,13,7.DOI:10.3969/j.issn.1005-9954.2025.10.001
矿物改性对污泥生物炭固碳能力的影响
Effect of mineral modification on carbon fixation capacity of sludge biochar
摘要
Abstract
Using Zeo(zeolite),Ca(OH)2,Mon(montmorillonite)and Mix[a mixture of Ca(OH)2 and montmorillonite]as the modifier of SSBC(sewage sludge biochar).The influence of different minerals on the physicochemical properties,carbon fixation capacity and stability(both chemical and thermal)of SSBC at four temperatures(300,400,500,600℃)was investigated.The results shows that Ca(OH)2 modification significantly enhances the carbon retention rate and stability of biochar.The carbon retention rate of Ca-SSBC increases by 9.10％-21.20％compared to SSBC under the same pyrolysis conditions.The chemical stability of biochar follows the order Ca-SSBC＞Mix-SSBC＞SSBC＞Zeo-SSBC＞Mon-SSBC.Ca-SSBC shows the lowest carbon loss rates after H2O2 oxidation during 300,400,500 ℃,which is 8.88％,8.97％and 6.00％,respectively.Thermal mass loss ratios are also reduced in the order SSBC(27.85％)＞Mon-SSBC(20.84％)＞Zeo-SSBC(20.56％)＞Mix-SSBC(18.17％)＞Ca-SSBC(16.91％),indicating that mineral modification enhances the thermal stability of biochar.Mineral modification increases carbon-containing functional groups and forms CaCO3,enhancing carbon fixation capacity.This study presents a promising strategy for screening soil mineral-modified biochar for carbon sequestration.关键词
生物炭/矿物改性/碳保留率/稳定性/污水污泥Key words
biochar/mineral modification/carbon retention rate/stability/sewage sludge分类
资源环境引用本文复制引用
胡冬洁,韩融,费花花,郑凯旋,王成杰,张斌..矿物改性对污泥生物炭固碳能力的影响[J].化学工程,2025,53(10):1-6,13,7.基金项目
陕西省创新能力支撑计划(2024RS-CXTD-54) （2024RS-CXTD-54）
陕西省自然科学基础研究计划(2021JM-154) （2021JM-154）
