Study of Chitosan Modified Attapulgite to the Flocculation and Harvest of Chlorella

Qiao-lin WU; Zhi-dong CHEN; Wei XU; Rong SHAO

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Study of Chitosan Modified Attapulgite to the Flocculation and Harvest of Chlorella

更新时间：2022-09-18

- Study of Chitosan Modified Attapulgite to the Flocculation and Harvest of Chlorella
- Polymer Bulletin Vol. 26, Issue 2, Pages: 56-60(2013)
- 作者机构：
  
  1.常州大学石油化工学院，常州　213164
  2.盐城工学院化学与生物工程学院，盐城　224051
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013-02，
  
  Received：14 May 2012，
  
  Revised：24 October 2012，
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Qiao-lin WU, Zhi-dong CHEN, Wei XU, Rong SHAO. Study of Chitosan Modified Attapulgite to the Flocculation and Harvest of Chlorella. [J]. Polymer Bulletin 26(2):56-60(2013)
DOI：

Qiao-lin WU, Zhi-dong CHEN, Wei XU, Rong SHAO. Study of Chitosan Modified Attapulgite to the Flocculation and Harvest of Chlorella. [J]. Polymer Bulletin 26(2):56-60(2013) DOI：

摘要

以壳聚糖改性凹凸棒土作为普通小球藻

Chlorella vulgaris

的絮凝剂

CaCl

为助凝剂

研究了絮凝采收小球藻的工艺条件。结果表明

最佳絮凝条件为:絮凝剂0.4g/L、壳聚糖/凹凸棒土为1∶12、助凝剂CaCl

为0.2g/L、溶液的pH为9.0

此条件下小球藻絮凝率达到95%以上。絮凝剂的扫描电镜图和BET比表面积(BET)数据显示

改性后的凹凸棒土以一定的空间结构状吸附连接壳聚糖

有效增加了絮凝剂的比表面积

有利于小球藻的吸附。研究采用的原料价格低廉、安全环保

絮凝剂的制备简单且絮凝效率高

可广泛用于工业化生产中微藻的采收。

Abstract

Chitosan modified attapulgite is used as the flocculant for precipitating

Chlorella vulgaris

with adding CaCl

as the coagulant. For

Chlorella vulgaris

the optimal flocculation conditions showed as following: flocculant is 0.4g/L

the ratio of chitosan and attapulgite in flocculant is 1∶12

CaCl

coagulant dosage is 0.2g/L

and pH of the solution is 9.0. Under the best conditions

the flocculation rate of

Chlorella vulgaris

can reach up to 95%. The scanning electron micrographs and the BET specific surface area data(BET) of flocculant show that the modified attapulgite adsorbs and connects with chitosan to a certain degree of spatial structure

which effectively increases the surface area of flocculant and is conducive to the adsorption of

Chlorella

.The raw materials used in this article could have the advantages of low cost

safety and low impact on the environment. And the high efficiency of flocculation can obtain with sample method of preparing the flocculant

which can be widely used for the harvest of microalgae in industrial production.

关键词

小球藻壳聚糖凹凸棒土助凝剂絮凝

Keywords

ChlorellaChitosanAttapulgiteCoagulantFlocculation

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