论文
论文标题: Removal of Microcystis aeruginosa and microcystin-LR using chitosan (CTS)-modified cellulose fibers and ferric chloride
作者: Liu, Mingmeng; Zhang, Junjie; Wang, Lingling; Zhang, Haiyang; Zhang, Wen; Zhang, Xuezhi
出版刊物: SEPARATION AND PURIFICATION TECHNOLOGY
出版日期: MAR 1
出版年份: 2023
卷/期:
DOI: 10.1016/j.seppur.2022.122889
论文摘要: The occurrences of harmful algae blooms (HABs) and cyanotoxins such as microcystin-LR (MC-LR) are increasing in water reservoirs and compromise drinking water security. In this study, chitosan (CTS) modified cellulose fibers (CF) were developed as a green adsorbent for the simultaneous removal of a model algae cell, Microcystis aeruginosa, and MC-LR. The results showed that the CTS modification could render amine groups (-NH2) on CF and increased the adsorption affinity toward algae. In the absence of algogenic organic matter (AOM), the algae removal reached 100% at a dosage of 26.7 g-NH2-CF/g-algae (dry weight); however, at the same CF dosage, the presence of AOM (8.13 mg-carbon center dot L-1) strongly reduced the adsorption by NH2-CF and removal rate of algae cells reached only 3.2 +/- 3.0%. When adding FeCl3 or Fe3+ at a concentration of 11.2 mg-Fe center dot L-1, the inhibitory effect of AOM was dramatically reduced as indicated by the improved algae removal up to 95% at an NH2-CF dosage of 20.45 g center dot g- 1, because of the reduced energy barrier between NH2-CF and cells. Moreover, when the Fe3+ concentration was increased to 16.8 mg center dot L-1, 79% of MC-LR was simultaneously removed. Thus, combining Fe3+ with NH2-CF is proven effective to enhance the adsorption and removal of Microcystis aeruginosa and MC-LR and achieve a sustainable mitigation of HABs.
== 实验室与学会 ==
  • == 实验室与学会 ==
  • 淡水生态与生物技术国家重点实验室
  • 中国科学院藻类生物学重点实验室
  • 农业部淡水养殖病害防治重点实验室
  • 武汉白暨豚保护基金会
  • 湖北省海洋湖沼学会
  • 中国动物学会原生动物学分会
  • 中国动物学会斑马鱼分会
  • 湖北省暨武汉动物学会
  • 中国水产学会鱼病学专业委员会
  • 中国鱼类学会
== 平台建设 ==
  • == 平台建设 ==
  • “一带一路”海域赤潮数据库
  • 国家水生生物种质资源库
  • 国家斑马鱼资源中心
  • 中国科学院淡水藻种库
  • 中国科学院武汉生命科学大型仪器区域中心
  • 湿地生态系统观测研究野外站联盟
  • 中国科学院水生生物研究所分析测试中心
  • 中国科学院超级计算武汉分中心
  • 水生生物博物馆
== 相关网站推荐 ==
  • == 相关网站推荐 ==
  • 中国科学院
  • 农业农村部
  • 科学技术部
  • 生态环境部
  • 国家自然科学基金委员会
  • 中国科学院武汉分院
  • 湖北省科学技术厅
  • 湖北省生态环境厅
  • 湖北省农业农村厅