Preparation of Eucommia ulmoides lignin-based high-performance biochar containing sulfonic group: Synergistic pyrolysis mechanism and tetracycline hydrochloride adsorption

被引：123

作者：

Chen, Yicong ^{[1
,2
]}

Liu, Jianting ^{[1
,2
]}

Zeng, Qibin ^{[1
,2
]}

Liang, Zuxue ^{[1
,2
]}

Ye, Xiaoxia ^{[1
,2
]}

Lv, Yuancai ^{[1
,2
]}

Liu, Minghua ^{[1
,2
]}

机构：

[1] Fuzhou Univ, Coll Environm & Resources, Fujian Prov Engn Res Ctr Rural Waste Recycling Te, Fuzhou 350116, Fujian, Peoples R China

[2] Fuzhou Univ, Fujian Prov Technol Exploitat Base Biomass Resour, Fuzhou 350116, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2021年 / 329卷

基金：

中国国家自然科学基金;

关键词：

Lignin; Biochar; Sulfonic group; Synergetic pyrolysis; Tetracycline hydrochloride;

D O I：

10.1016/j.biortech.2021.124856

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In this study, the sulfonic group was introduced to prepare high-performance Eucommia ulmoides lignin-based biochar, which was used to remove tetracycline hydrochloride. The BET area (2008 m(2) g(-1)) of sulfonated biochar was twice that of unmodified biochar. Through XRD and Raman analysis, the synergetic pyrolysis mechanism of the sulfonic group in the formation of the porous structure was discussed. Sulfonated biochar had excellent adsorption performance for tetracycline hydrochloride (Q(m): 1163 mg g(-1)), while the adsorption performance of unmodified biochar was about only one-fourth (Q(m): 277.7 mg g(-1)) of that. The adsorption of tetracycline hydrochloride by the sulfonated biochar was spontaneously endothermic and conformed to the Langmuir isotherm model. The adsorption process was confirmed by pseudo-second-order kinetic model. Moreover, the sulfonic group on the sulfonated biochar significantly promoted the formation of the hydrogen bond and greatly improved the adsorption performance.

引用

页数：8

共 43 条

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