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Treatment surface water using a novel pumpkin seed-based natural bio-coagulant: optimization by CCD and toxicity evaluation

Paper Topic: 
Water and Wastewater Treatment
 
Volume: 
 
Issue: 
 

Pages :
142 - 148

Corresponing Author: 
Lien Phuong Thi Tran
 
Authors: 
Hoa Thanh Nguyen. Tan Quang Luc. Hung Van Hoang. Hue Thi Cao. Lien Phuong Thi Tran.
Paper ID: 
gnest_04777
Paper Status: 
Published
Date Paper Accepted: 
16-05-2023
Paper online: 
18/05/2023
Visual abstract: 
Abstract: 

This goal of this study was to evaluate the effectiveness of a new coagulant extract from pumpkin seeds (PSC) for removing turbidity and organic compounds from different natural surface waters. Two design experiment methods, namely central composite design (CCD) and response surface methodology (RSM) were used to optimize PSC for removal of turbidity and organic matter via the chemical oxygen demand (COD) of surface water. The CCD results indicated that more than 74.7% of COD and 94.4% of nephelometric turbidity unit (NTUs) were removed under optimized conditions (pH = 7.4; mPSC = 1.5 g/L; time: 88 min). They allowed for final effluent with significantly higher quality in terms of organic content and safe to Vibrio fischeri to be obtained

Keywords: 
Bio-coagulant, pumpkin seeds. Central composite design (CCD), surface water pollution

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