Optimization process for enhancing the recovery of ammonium and phosphate from wastewater by modified rice husk biochar

Thanh, NL; Nguyet, NLH; Le, VG; Thuy, NT; Phong, VHN; Que, VNX; Hang, VT; Huy, NN

Optimization process for enhancing the recovery of ammonium and phosphate from wastewater by modified rice husk biochar

Thanh, NL Nguyet, NLH Le, VG Thuy, NT Phong, VHN Que, VNX Hang, VT Huy, NN

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Publication Type:: Journal Article
Citation:: Engineering and Applied Science Research, 2023, 50, (2), pp. 185-194
Issue Date:: 2023-01-01

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Field	Value	Language
dc.contributor.author	Thanh, NL
dc.contributor.author	Nguyet, NLH
dc.contributor.author	Le, VG
dc.contributor.author	Thuy, NT
dc.contributor.author	Phong, VHN
dc.contributor.author	Que, VNX
dc.contributor.author	Hang, VT
dc.contributor.author	Huy, NN
dc.date.accessioned	2024-03-28T02:45:08Z
dc.date.available	2024-03-28T02:45:08Z
dc.date.issued	2023-01-01
dc.identifier.citation	Engineering and Applied Science Research, 2023, 50, (2), pp. 185-194
dc.identifier.issn	2539-6161
dc.identifier.issn	2539-6218
dc.identifier.uri	http://hdl.handle.net/10453/177322
dc.description.abstract	This study aimed to optimize the recovery of ammonium and phosphate from wastewater using Mg-modified biochar as an adsorbent. Given the situation of domestic wastewater and agricultural waste in Vietnam, the researchers fabricated biochar from rice husk and modified it with magnesium salt to make it an effective material for wastewater treatment. To determine the optimal conditions for the experiments, the response surface methodology was used, specifically the central composite design (CCD) model with four factors, namely biochar dosage (g/L), pH, N:P ratio, and initial concentrations of NH4+ and PO43-. The material was thoroughly characterized using scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD) to ensure that it met the desired specifications. Based on the experimental design, the optimal conditions were determined to be a biochar dosage of 0.12 g/L, an N:P ratio of 1.25, an initial concentration of 60 mg/L, and a pH of 6. Tests conducted in synthetic wastewater produced results that were in agreement with the predicted values. However, when the optimized values were tested in domestic wastewater, only phosphate removal showed good agreement with an efficiency of 93% compared to the predicted optimization value of 88%. This study demonstrates the potential of Mg-modified biochar as an effective adsorbent for recovering ammonium and phosphate from wastewater. Although further optimization may be required for ammonium removal in domestic wastewater, the results are promising and warrant further investigation.
dc.language	en
dc.relation.ispartof	Engineering and Applied Science Research
dc.relation.isbasedon	10.14456/easr.2023.20
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Optimization process for enhancing the recovery of ammonium and phosphate from wastewater by modified rice husk biochar
dc.type	Journal Article
utslib.citation.volume	50
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Science
pubs.organisational-group	University of Technology Sydney/Strength - C3 - Climate Change Cluster
utslib.copyright.status	closed_access	*
dc.date.updated	2024-03-28T02:45:07Z
pubs.issue	2
pubs.publication-status	Published
pubs.volume	50
utslib.citation.issue	2

Abstract:

This study aimed to optimize the recovery of ammonium and phosphate from wastewater using Mg-modified biochar as an adsorbent. Given the situation of domestic wastewater and agricultural waste in Vietnam, the researchers fabricated biochar from rice husk and modified it with magnesium salt to make it an effective material for wastewater treatment. To determine the optimal conditions for the experiments, the response surface methodology was used, specifically the central composite design (CCD) model with four factors, namely biochar dosage (g/L), pH, N:P ratio, and initial concentrations of NH4+ and PO43-. The material was thoroughly characterized using scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD) to ensure that it met the desired specifications. Based on the experimental design, the optimal conditions were determined to be a biochar dosage of 0.12 g/L, an N:P ratio of 1.25, an initial concentration of 60 mg/L, and a pH of 6. Tests conducted in synthetic wastewater produced results that were in agreement with the predicted values. However, when the optimized values were tested in domestic wastewater, only phosphate removal showed good agreement with an efficiency of 93% compared to the predicted optimization value of 88%. This study demonstrates the potential of Mg-modified biochar as an effective adsorbent for recovering ammonium and phosphate from wastewater. Although further optimization may be required for ammonium removal in domestic wastewater, the results are promising and warrant further investigation.

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http://hdl.handle.net/10453/177322