化工进展 ›› 2015, Vol. 34 ›› Issue (05): 1433-1439.DOI: 10.16085/j.issn.1000-6613.2015.05.041

• 精细化工 • 上一篇    下一篇

改性阳离子淀粉-凹凸棒土复合絮凝剂絮凝采收小球藻

董锐1, 王元1,2, 刘婷婷1,3   

  1. 1. 盐城工学院化学与生物工程学院, 江苏 盐城 224051;
    2. 安徽理工大学化学工程学院, 安徽 淮南 232001;
    3. 南通大学药学院, 江苏 南通 226361
  • 收稿日期:2014-10-15 修回日期:2014-11-18 出版日期:2015-05-05 发布日期:2015-05-05
  • 通讯作者: 董锐(1967—),女,硕士,副教授,研究方向为高分子絮凝剂、聚合膜等.E-maildongr@ycit.cn.
  • 作者简介:董锐(1967—),女,硕士,副教授,研究方向为高分子絮凝剂、聚合膜等.E-maildongr@ycit.cn.
  • 基金资助:

    江苏省科技厅产学研联合创新基金资助(BY2013057-01),江苏省环保厅环保科研课题2013024)项目.

Flocculation of chlorella by composite of modified starch and attapulgite

DONG Rui1, WANG Yuan1,2, LIU Tingting1,3   

  1. 1. School of Chemical and Biological Engineering, Yancheng Institute of Technology, Yancheng 224051, Jiangsu, China;
    2. School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China;
    3. School of Pharmacy, Nantong University, Nantong 226361, Jiangsu, China
  • Received:2014-10-15 Revised:2014-11-18 Online:2015-05-05 Published:2015-05-05

摘要: 二元接枝改性阳离子淀粉(CS-DMDAAC)/凹凸棒土是一种新型复合絮凝剂,用于小球藻的絮凝采收环节,在环保、化工、材料等领域具有更广阔的应用前景.为提高小球藻的絮凝采收率,通过单因素实验考察阳离子淀粉(CS)和CS-DMDAAC对小球藻的絮凝效果,并对CS-DMDAAC与凹凸棒土进行复配,通过单因素实验探讨了pH值、CS-DMDAAC/凹凸棒土复配比、阳离子淀粉投加量及沉降时间对小球藻絮凝率的影响,在单因素实验的基础上,以正交试验法优化CS-DMDAAC/凹凸棒土对小球藻的絮凝工艺.用扫描电镜(SEM)对凹凸棒土、CS-DMDAAC/凹凸棒土和CS-DMDAAC/凹凸棒土吸附小球藻进行表征,实验结果表明最佳絮凝工艺条件为:pH=9,CS-DMDAAC/凹凸棒土复配比为1:9,阳离子淀粉投加量为0.04g,沉降时间为210min.在该条件下进行平行实验,对小球藻的絮凝率最高达到99.1%.研究结果对CS-DMDAAC的改性以及藻类的絮凝采收具有参考价值.

关键词: 阳离子淀粉, 二甲基二烯丙基氯化铵(DMDAAC), 凹凸棒土, 复配, 絮凝

Abstract: Cationic starch-dimethyl diallylammonium chloride (CS-DMDAAC)/attapulgite is a new composite flocculant. It is used in the flocculation and recovery process of chlorella and has a much more broader application prospect in environmental protection,chemical engineering and material industry. In this paper,CS-DMDAAC copolymer was selected by comparing CS-DMDAAC with cationicstarch (CS) in terms of the flocculating effects on chlorella,and then this composite starch was blended with attapulgite at a specific ratio. The effect of pH,ratio of CS-DMDAAC/ attapulgite,dosage of composite starch and deposition time on the flocculation rate of chlorella was discussed. On the basis of single factor experiment,the flocculation process of CS-DMDAAC/ attapulgite on chlorella was optimized by means of orthogonal test. The shape of attapulgite,CS-DMDAAC/attapulgite and the mixture of composite flocculant and chlorella were analyzed by scanning electron microscopy(SEM). The optimal conditions were:pH=9,CS-DMDAAC/attapulgite ratio in flocculant 1:9,dosage of composite starch 0.04g and deposition time 210 min. Parallel experiments were made under the optimal conditions,and flocculation rate of chlorella was up to 99.1%. The results of this paper could provide valuable reference for modifications of CS-DMDAAC and recovery of alga.

Key words: cationicstarch, dimethyl diallylammonium chloride, attapulgite, compound, flocculate

中图分类号: 

京ICP备12046843号-2;京公网安备 11010102001994号
版权所有 © 《化工进展》编辑部
地址:北京市东城区青年湖南街13号 邮编:100011
电子信箱:hgjz@cip.com.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn