Removal of carbon nanomaterials by co-precipitation with chitosan: a facile method for water pre-treatment†,Environmental Science: Water Research & Technology

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Removal of carbon nanomaterials by co-precipitation with chitosan: a facile method for water pre-treatment†
Environmental Science: Water Research & Technology ( IF 3.5 ) Pub Date : 2017-11-22 00:00:00 , DOI: 10.1039/c7ew00283a
Tirto Soenaryo _{1,

2,

3,

4} , Anatoly Zinchenko _{1,

2,

3,

4} , Shizuaki Murata _{1,

2,

3,

4}

Affiliation

Anthropogenic contamination of the environment by engineered nanomaterials (ENM) is an emerging environmental problem; therefore, it is important to develop efficient technologies for contaminated water treatment. Chitosan was used as a flocculant for the co-precipitation and removal of water-dispersed carbon nanomaterials (hydroxylated carbon nanotubes (CNT-OH) and fullerenes (C₆₀-OH)) by changing the solution pH, which affects chitosan solubility. The precipitation of chitosan was accompanied by efficient entrapment of water-dispersed ENM into an insoluble precipitate which resulted in >90% ENM removal during single treatment. Factors controlling the efficiency of ENM removal by the chitosan-assisted co-precipitation method, such as the molecular weight of chitosan, the presence of low-molecular-weight electrolytes, the separation method, etc., are discussed.

中文翻译：

与壳聚糖共沉淀去除碳纳米材料：一种简便的水预处理方法†

工程纳米材料（ENM）对环境的人为污染是一个正在出现的环境问题。因此，开发有效的污水处理技术非常重要。壳聚糖用作絮凝剂，用于共沉淀和去除水分散的碳纳米材料（羟基化碳纳米管（CNT-OH）和富勒烯（C ₆₀-OH）），方法是改变溶液的pH值，这会影响壳聚糖的溶解性。壳聚糖的沉淀伴随着水分散的ENM被有效地截留为不溶性沉淀，这导致在单次处理中ENM去除率> 90％。讨论了控制壳聚糖辅助共沉淀法去除ENM效率的因素，例如壳聚糖的分子量，低分子量电解质的存在，分离方法等。

更新日期：2017-11-22

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