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Performance of Microcystis aeruginosa Removal from Water Using Moringa oleifera Seed Presscake Extract as Natural Coagulant


Affiliations
1 School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450045, China
2 Zhongzhou Water Holding Co.Ltd., Zhengzhou, 450000, China
3 Urban & Rural Construction and Designing Institute of Henan Province Co. Ltd., Zhengzhou, 450000, China
 

The natural Moringa oleifera seed presscake extract (MOSPE) purified with salt-in and dialysis process was used for coagulating removal of Microcystis aeruginosa (M.A.) from water in this study. The results showed that the MOSPE obtained in the dialysis tubes with three molecular weight cutoffs (2000, 3500 and 7000 Da) could remove the M.A. efficiently. M.A. removal efficiency increased with the rising temperature. There existed optimal dosage for best M.A. removal, the optimal dosages for the initial chlorophyll-a (Chl-a) concentrations of 0.60 and 1.43 mg·L-1 were 5.0 and 20 mg MOSP)·L-1, respectively. Adsorption and charge neutralization contributed to the removal of M.A from solution. Compared with the polymeric aluminium chloride (PAC) at same dosage as MOSPE, the MOSPE had better algal removal performance.

Keywords

Moringa oleifera Seeds, Presscake Extract, Microcystis aeruginosa, Coagulation, Adsorption, Chlorophyll-a.
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  • Performance of Microcystis aeruginosa Removal from Water Using Moringa oleifera Seed Presscake Extract as Natural Coagulant

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Authors

Zongxi Li
School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450045, China
Nan Zhang
Zhongzhou Water Holding Co.Ltd., Zhengzhou, 450000, China
Wenhang Zhai
School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450045, China
Hanchao Li
Urban & Rural Construction and Designing Institute of Henan Province Co. Ltd., Zhengzhou, 450000, China
Jingxi Tie
School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450045, China

Abstract


The natural Moringa oleifera seed presscake extract (MOSPE) purified with salt-in and dialysis process was used for coagulating removal of Microcystis aeruginosa (M.A.) from water in this study. The results showed that the MOSPE obtained in the dialysis tubes with three molecular weight cutoffs (2000, 3500 and 7000 Da) could remove the M.A. efficiently. M.A. removal efficiency increased with the rising temperature. There existed optimal dosage for best M.A. removal, the optimal dosages for the initial chlorophyll-a (Chl-a) concentrations of 0.60 and 1.43 mg·L-1 were 5.0 and 20 mg MOSP)·L-1, respectively. Adsorption and charge neutralization contributed to the removal of M.A from solution. Compared with the polymeric aluminium chloride (PAC) at same dosage as MOSPE, the MOSPE had better algal removal performance.

Keywords


Moringa oleifera Seeds, Presscake Extract, Microcystis aeruginosa, Coagulation, Adsorption, Chlorophyll-a.

References