CIESC Journal ›› 2016, Vol. 67 ›› Issue (9): 3872-3878.DOI: 10.11949/j.issn.0438-1157.20160282

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Precipitation flotation behavior of collagen-peptide based surfactants for Cu(Ⅱ) ions in wastewater

ZHOU Shengpeng1, HUO Wenkai2, WANG Ru1, LIAO Xuepin1,2, SHI Bi2   

  1. 1 College of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China;
    2 National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, Sichuan, China
  • Received:2016-03-10 Revised:2016-04-24 Online:2016-09-05 Published:2016-09-05
  • Supported by:

    supported by the National High Technology Research and Development Program of China (2011AA06A108).

胶原多肽基表面活性剂对废水中Cu(Ⅱ)的沉淀浮选性能

周生鹏1, 霍文凯2, 王茹1, 廖学品1,2, 石碧2   

  1. 1 四川大学化学工程学院, 四川 成都 610065;
    2 四川大学制革清洁技术国家工程实验室, 四川 成都 610065
  • 通讯作者: 廖学品
  • 基金资助:

    国家高技术研究发展计划项目(2011AA06A108)。

Abstract:

Precipitation flotation behaviors of the collagen-peptide based surfactants (anionic CBS and cationic C-CBS) for removal of heavy mental ions in wastewater were studied using low concentration of Cu2+ aqueous solution as simulated wastewater containing heavy metal ions. Factors of wastewater pH, gas velocity, mass concentration of surfactant, flotation time, and initial Cu2+ concentration were investigated thoroughly on efficacy of the Cu2+ removal. Both CBS and C-CBS surfactants exhibited good performance at alkaline condition, which around 90% Cu2+ were removed. With increase in mass concentration of surfactants, the Cu2+ removal was increased using CBS whereas it was decreased using C-CBS. When the gas velocity or flotation time was increased, the Cu2+ removal was enhanced initially and then plateaued afterwards. These results suggested that the collagen-peptide based surfactants can be used in the precipitation flotation for the removal of heavy mental ions in wastewater.

Key words: collagen-peptide, surfactants, Cu2+waste water, precipitation, flotation

摘要:

以低浓度Cu2+水溶液模拟重金属离子废水,研究了胶原多肽基表面活性剂(阴离子型CBS和阳离子型C-CBS)对重金属离子废水的沉淀浮选性能。通过单因素实验考察了pH、气速、表面活性剂质量浓度、气浮时间、Cu2+初始浓度等因素对废水中Cu2+沉淀浮选效果的影响。结果表明,CBS和C-CBS均适用于在碱性条件下对金属离子废水进行沉淀浮选,Cu2+的去除率达到90%左右;且随着气速的升高,Cu2+的去除率增加而后趋于不变;随着表面活性剂用量的增加,对CBS,Cu2+的去除率增加,而对C-CBS,Cu2+的去除率反而下降;随气浮时间延长,Cu2+去除率逐渐增加而后趋于不变。研究表明,胶原多肽基表面活性剂可用于重金属离子废水的沉淀浮选。

关键词: 胶原多肽, 表面活性剂, Cu2+废水, 沉淀, 浮选

CLC Number: