松香淀粉酯对苯并芘的吸附研究

doi:10.3969/j.issn.0253-2417.2017.04.010

林产化学与工业 ›› 2017, Vol. 37 ›› Issue (4): 67-72.doi: 10.3969/j.issn.0253-2417.2017.04.010

松香淀粉酯对苯并芘的吸附研究

巫佳¹, 陆有达², 杨慧², 赖熙晨², 林日辉², 陈其勇³

1. 广西民族大学海洋与生物技术学院;广西高校微生物与植物资源利用重点实验室, 广西南宁 530006;
2. 广西民族大学化学化工学院;化学与生物转化过程新技术重点实验室, 广西南宁 530006;
3. 南宁天亮精细化工有限公司, 广西南宁 530007

收稿日期:2016-11-25 出版日期:2017-08-25 发布日期:2017-09-02
通讯作者: 林日辉,研究员,硕士生导师,主要从事发酵工程、酶工程研究;E-mail:rihuilin@aliyun.com E-mail:rihuilin@aliyun.com
作者简介:巫佳(1991-),男,广西柳州人,硕士生,主要从事化学与生物转化研究工作
基金资助:
广西人才小高地建设创新团队资助计划项目（桂教人[2011]47）；南宁市科学研究与技术开发计划项目（20151042）；广西高校大学生创新创业计划项目（201610608014）

Absorption of Benzopyrene by Rosin Starch Ester

WU Jia¹, LU Youda², YANG Hui², LAI Xichen², LIN Rihui², CHEN Qiyong³

1. Guangxi Colleges and Universities Key Laboratory of Utilization of Microbial and Botanical Resources, College of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning 530006, China;
2. Key Laboratory of New Techniques for Chemical and Biological Conversion Process, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530006, China;
3. Nanning Dawn Light Chemical Co., Ltd. Nanning 530007, China

Received:2016-11-25 Online:2017-08-25 Published:2017-09-02

摘要/Abstract

摘要： 以松香淀粉酯为吸附剂对正辛烷溶液中的苯并芘进行吸附研究，分析了吸附时间、温度、苯并芘的初始浓度以及松香淀粉酯的取代度对吸附量的影响，并对吸附过程的热力学、动力学进行了分析。结果显示：提高吸附温度、苯并芘的浓度以及吸附剂的取代度均可提高吸附量；以取代度0.12的松香淀粉酯为吸附剂，在吸附时间120 min、吸附温度50℃、苯并芘的质量浓度10 mg/L条件下，对苯并芘的吸附量达20.76 μg/g；该吸附过程符合Langmuir等温线模型，热力学参数ΔG^Ø，ΔH^Ø和ΔS^Ø表明：吸附是一个自发和吸热的过程；动力学数据分析表明松香淀粉酯对苯并芘的吸附过程符合准二级动力学模型。

关键词: 松香淀粉酯, 苯并芘, 吸附过程

Abstract: The absorption of benzopyrene in octane solution by rosin starch ester was studied in this paper.Affect factors including temperature,contact time,initial concentration of benzopyrene and the degree of substitution (D_s) of the rosin starch ester were investigated.The thermodynamics and kinetics of the absorption process were also studied.The results showed that increasing the absorption temperature,the benzopyrene concentration,and the D_s of the adsorbent were beneficial to the adsorption process.Using rosin starch ester (D_s=0.12) as adsorbent,absorbing 120 min at 50℃ in 10 mg/L benzopyrene,the absorption capacity of benzopyrene reached to 20.76 μg/g.The measured results were fitted with the Langmuir isotherm better.Thermodynamic parameters ΔG^Ø,ΔH^Ø and ΔS^Ø indicated that the adsorption process was spontaneous and endothermic.Analysis of the kinetic data suggested the pseudo second order kinetic model was suitable for describing the adsorption process.

Key words: rosin starch ester, benzopyrene, absorption process

中图分类号:

TQ35
TS231

巫佳, 陆有达, 杨慧, 赖熙晨, 林日辉, 陈其勇. 松香淀粉酯对苯并芘的吸附研究[J]. 林产化学与工业, 2017, 37(4): 67-72.

WU Jia, LU Youda, YANG Hui, LAI Xichen, LIN Rihui, CHEN Qiyong. Absorption of Benzopyrene by Rosin Starch Ester[J]. Chemistry and Industry of Forest Products, 2017, 37(4): 67-72.

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松香淀粉酯对苯并芘的吸附研究

Absorption of Benzopyrene by Rosin Starch Ester

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