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

IF 9 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology Pub Date : 2021-06-01 DOI:10.1016/j.biortech.2021.124856

Yicong Chen , Jianting Liu , Qibin Zeng , Zuxue Liang , Xiaoxia Ye , Yuancai Lv , Minghua Liu

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引用次数: 74

Abstract

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 m² 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.

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含磺酸基杜仲木质素高性能生物炭的制备:协同热解机理及对盐酸四环素的吸附

在本研究中，引入磺酸基制备了高性能杜仲木质素基生物炭，用于去除盐酸四环素。磺化生物炭的BET面积(2008 m2 g−1)是未改性生物炭的2倍。通过XRD和拉曼分析，探讨了磺酸基在多孔结构形成过程中的协同热解机理。磺化生物炭对盐酸四环素的吸附性能优良(Qm: 1163 mg g−1)，而未改性生物炭的吸附性能仅为其四分之一(Qm: 277.7 mg g−1)。磺化生物炭对盐酸四环素的吸附是自发吸热的，符合Langmuir等温吸附模型。拟二级动力学模型证实了吸附过程。此外，磺化生物炭上的磺酸基显著促进了氢键的形成，大大提高了吸附性能。

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来源期刊

Bioresource Technology 工程技术-能源与燃料

CiteScore

20.80

自引率

19.30%

发文量

2013

审稿时长

12 days

期刊介绍： Bioresource Technology publishes original articles, review articles, case studies, and short communications covering the fundamentals, applications, and management of bioresource technology. The journal seeks to advance and disseminate knowledge across various areas related to biomass, biological waste treatment, bioenergy, biotransformations, bioresource systems analysis, and associated conversion or production technologies. Topics include: • Biofuels: liquid and gaseous biofuels production, modeling and economics • Bioprocesses and bioproducts: biocatalysis and fermentations • Biomass and feedstocks utilization: bioconversion of agro-industrial residues • Environmental protection: biological waste treatment • Thermochemical conversion of biomass: combustion, pyrolysis, gasification, catalysis.