基于正交设计葡萄废弃物基生物活化炭的制备及其吸附性能

doi:10.7523/j.issn.2095-6134.2021.02.008

中国科学院大学学报 ›› 2021, Vol. 38 ›› Issue (2): 217-227.DOI: 10.7523/j.issn.2095-6134.2021.02.008

基于正交设计葡萄废弃物基生物活化炭的制备及其吸附性能

常春^1,2,3, 白杨¹, 宋欣怡¹, 单爽¹, 李明哲¹

1. 渤海大学化学与材料工程学院, 辽宁锦州 121013;
2. 渤海大学海洋研究院, 辽宁锦州 121013;
3. 渤海大学辽宁省全谱太阳能电池转光材料专业技术创新中心, 辽宁锦州 121013

收稿日期:2019-06-27 修回日期:2019-09-16 发布日期:2021-03-15
通讯作者: 常春
基金资助:
辽宁省“兴辽英才计划”项目（XLYC1907173）、国家自然科学基金（51508026）、辽宁省自然科学基金（20180550030）和辽宁省教育厅科学研究经费项目（LQ2019003，LQ2020014，LJ2020014），渤海大学海洋研究院开放基金（BDHYYJY2020014）资助

Preparation of grape peel based biochar by orthogonal design and its adsorption performance

CHANG Chun^1,2,3, BAI Yang¹, SONG Xinyi¹, SHAN Shuang¹, LI Mingzhe¹

1. College of Chemistry and Materials Engineering, Bohai University, Jinzhou 121013, Liaoning, China;
2. Institute of Ocean Research, Bohai University, Jinzhou 121013, Liaoning, China;
3. Professional Technology Innovation Center of Liaoning Province for Conversion Materials of Solar Cell, Bohai University, Jinzhou 121013, Liaoning, China

Received:2019-06-27 Revised:2019-09-16 Published:2021-03-15

摘要/Abstract

摘要： 以葡萄皮为原材料，用限氧热解法制备生物炭。通过设计3因素3水平的正交实验，选择出最佳的活化条件进行活化，得到活化生物炭用于吸附实验。考察反应物初始浓度、反应温度和接触时间对吸附的影响规律，并进行分析。由动力学拟合结果，可以得出葡萄皮基生物炭对甲基橙的吸附过程用准二级动力学方程较好拟合，说明生物炭对甲基橙的吸附不是单一的单层吸附过程。颗粒内扩散方程表明颗粒内扩散不是唯一的限速因素，吸附过程由液膜扩散和颗粒内扩散两个过程控制。双室模型表明快吸附反应在吸附过程中起主导作用。用Temkin-Pyzhev模型对等温线进行拟合，表明活化炭对于甲基橙的吸附更倾向于不规则的表面吸附，吸附热力学数据证明吸附反应易发生。

关键词: 葡萄皮, 正交实验, 水热反应, 吸附性能, 生物炭

Abstract: The biochar was prepared by the limited oxygen pyrolysis method using agricultural waste grape peel as raw materials. The best activation conditions were selected for activated biochar through the orthogonal test table of three factors and three levels, and the activated biochar was obtained for adsorption experiment. The effects of initial concentration of reactants, reaction temperature and contact time on adsorption were investigated and analyzed through batch experiments. According to the kinetic fitting results, it could be concluded that the adsorption process of grape peel-based biochar on methyl orange could be well described by the quasi-second-order kinetic equation. It indicated that the adsorption process of activated biochar on methyl orange was not a single monolayer adsorption process. The intraparticle diffusion equation showed that intraparticle diffusion was not the only limiting factor, and the adsorption process was controlled by two processes:liquid film diffusion and intraparticle diffusion. The two-chamber model showed that the fast adsorption reaction played a leading role in the whole adsorption process. The adsorption of methyl orange by activated biochar was well fitted by Temkin-Pyzhev model, which showed that the adsorption of methyl orange by activated carbon was more prone to irregular surface adsorption. The adsorption thermodynamic data proved that adsorption reaction was easy to occur.

Key words: grape peel, orthogonal test, hydrothermal reaction, adsorptive performance, biochar

中图分类号:

O647.3

常春, 白杨, 宋欣怡, 单爽, 李明哲. 基于正交设计葡萄废弃物基生物活化炭的制备及其吸附性能[J]. 中国科学院大学学报, 2021, 38(2): 217-227.

CHANG Chun, BAI Yang, SONG Xinyi, SHAN Shuang, LI Mingzhe. Preparation of grape peel based biochar by orthogonal design and its adsorption performance[J]. Journal of University of Chinese Academy of Sciences, 2021, 38(2): 217-227.

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基于正交设计葡萄废弃物基生物活化炭的制备及其吸附性能

Preparation of grape peel based biochar by orthogonal design and its adsorption performance

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