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Citation: CUI Yuan-Chen, WANG Xin-Hai, LI De-Liang, LI Ming-Yu, ZHOU Da-Peng. Preparation and Flocculating Effect of Quaternary Ammonium Cationic Sesbania Gum[J]. Chinese Journal of Applied Chemistry, ;2004, 21(7): 717-721. shu

Preparation and Flocculating Effect of Quaternary Ammonium Cationic Sesbania Gum

1.
College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475001

Corresponding author: CUI Yuan-Chen,
Received Date: 20 August 2003
Available Online: 15 November 2003
Fund Project: 河南省科技攻关项目(0224380024) (0224380024)

The quaternary ammonium cationic sesbania gum (QACSG) with high substitution degree was prepared from sesbania gum (SG) and 3-chloro-2-hydroxypropyl-trimethyl-ammonium chloride (CHPAC).The effects of reaction conditions on substitution degree of primary hydroxyl group of SG and flocculating properties of QACSG were studied.At n(PHG):n(CHPAC)=1:1,reaction temperature 50℃,pH 9~10,V(CH₃CH₂OH):V(H₂O)=1:10,reaction time 6 h,the substitution degree was 0.68.When it was treated by QACSG,removal rate of COD Cr of domestic wastewater achieved 90%.Absorbance of Yellow-rever water treated by QACSG as flocculant was below 0.1.
- cationic sesbania gum,
- chemical modification,
- flocculation
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