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生物质化学工程 ›› 2021, Vol. 55 ›› Issue (2): 23-30.doi: 10.3969/j.issn.1673-5854.2021.02.004

• 研究报告 • 上一篇    下一篇

甜菜粕的季铵化修饰及其对核固红的吸附特性

张艳霞1,2, 俞雪3, 李洋1,2, 朱思明1,2,3,*()   

  1. 1. 喀什大学 生命与地理科学学院, 新疆 喀什 844000
    2. 喀什大学 新疆帕米尔高原生物资源与生态重点实验室, 新疆 喀什 844000
    3. 华南理工大学 食品科学与工程学院, 广东 广州 510641
  • 收稿日期:2020-04-17 出版日期:2021-03-30 发布日期:2021-03-23
  • 通讯作者: 朱思明 E-mail:lfsmzhu@scut.edu.cn
  • 作者简介:朱思明, 教授, 博士生导师, 研究领域为天然产物生物制造、天然生物资源综合利用等; E-mail: lfsmzhu@scut.edu.cn
    张艳霞(1996-), 女, 河南商丘人, 硕士生, 主要从事天然生物资源综合利用方面的研究工作
  • 基金资助:
    新疆维吾尔自治区自然科学基金资助项目(2018D01A03)

Quaternization of Sugar Beet Pulp and Its Adsorption Property to Nuclear Fast Red

Yanxia ZHANG1,2, Xue YU3, Yang LI1,2, Siming ZHU1,2,3,*()   

  1. 1. School of Life and Geography, Kashi University, Kashi 844000, China
    2. Key Laboratory of Biological Resources and Ecology of Pamirs Plateau in Xinjiang Uygur Autonomous Region, Kashi University, Kashi 844000, China
    3. School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
  • Received:2020-04-17 Online:2021-03-30 Published:2021-03-23
  • Contact: Siming ZHU E-mail:lfsmzhu@scut.edu.cn

摘要:

为改善甜菜粕作为生物吸附剂的吸附性能,使用季铵盐四丁基溴化铵(TBAB)对甜菜粕(SBP)进行修饰,制得吸附剂季铵盐四丁基溴化铵改性甜菜粕(TBAB-SBP),使用FT-IR、XRD、SEM对TBAB-SBP化学结构和表面形貌进行表征。并探究TBAB-SBP对核固红的吸附性能,分析其动力学、热力学和吸附等温线。结果表明:TBAB能有效负载到SBP表面,增加功能官能团种类和数量。TBAB-SBP对溶液中核固红的静态吸附最佳工艺条件为:溶液pH值2.0,质量浓度100 mg/L的核固红溶液100 mL,吸附剂用量0.6 g、吸附时间180 min、吸附温度25℃,此时的色素清除率为94.44%,与SBP相比,色素清除率上升约12个百分点。TBAB-SBP对核固红的吸附符合Langmuir等温线模型,说明吸附过程为均匀单分子层吸附;吸附过程为自发的放热过程;TBAB-SBP吸附核固红过程符合准二级吸附动力学模型,说明该吸附以化学吸附为主。

关键词: 生物吸附剂, 甜菜粕, 季铵盐修饰, 核固红, 吸附性能

Abstract:

In order to improve the adsorption performance of sugar beet pulp as a biosorbent, sugar beet pulp(SBP) was modified with quaternary ammonium salt tetrabutylammonium bromide(TBAB) to obtain the modified adsorbent TBAB-SBP. The adsorption performance of TBAB-SBP on nuclear fast red was explored. Its kinetics and thermodynamics were analyzed, and the chemical structure and surface morphology of TBAB-SBP were characterized by using FT-IR, XRD and SEM. The results showed that TBAB could be effectively loaded on the surface of SBP, and the types and number of functional groups increased. The static adsorption process conditions for nuclear fast red on TBAB-SBP in wastewater were pH value of the solution 2.0, 100 mL of nuclear fast red solution with mass concentration of 100 mg/L, amount of adsorbent 0.6 g, treatment time 180 min, adsorption temperature 25 ℃. Under these conditions, the pigment removal rate of TBAB-SBP was 94.44%, which was about 12% higher than that of SBP; the adsorption equilibrium data conformed to the Langmuir isotherm model; the adsorption process was a spontaneous exothermic process; the TBAB-SBP adsorption nuclear fast red process conformed to the qseudo-second-order equation.

Key words: biosorbent, sugar beet pulp, quaternary ammonium salt modification, nuclear fast red, adsorption property

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