A facile technique to prepare MgO-biochar nanocomposites for cationic and anionic nutrient removal

Tran, DT; Pham, TD; Dang, VC; Pham, TD; Nguyen, MV; Dang, NM; Ha, MN; Nguyen, VN; Nghiem, LD

A facile technique to prepare MgO-biochar nanocomposites for cationic and anionic nutrient removal

Tran, DT Pham, TD Dang, VC Pham, TD Nguyen, MV Dang, NM Ha, MN Nguyen, VN Nghiem, LD

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Journal of Water Process Engineering, 2022, 47
Issue Date:: 2022-06-01

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Field	Value	Language
dc.contributor.author	Tran, DT
dc.contributor.author	Pham, TD
dc.contributor.author	Dang, VC
dc.contributor.author	Pham, TD
dc.contributor.author	Nguyen, MV
dc.contributor.author	Dang, NM
dc.contributor.author	Ha, MN
dc.contributor.author	Nguyen, VN
dc.contributor.author	Nghiem, LD
dc.date.accessioned	2023-01-04T03:29:46Z
dc.date.available	2023-01-04T03:29:46Z
dc.date.issued	2022-06-01
dc.identifier.citation	Journal of Water Process Engineering, 2022, 47
dc.identifier.issn	2214-7144
dc.identifier.uri	http://hdl.handle.net/10453/164678
dc.description.abstract	The removal of NH4+ and PO43− from water using adsorbents produced from rice husk and corn cob byproducts was examined. The synthesis of MgO-biochar nanocomposites was conducted by magnesium activation under nitrogen atmosphere at 400 °C and 500 °C. The characterization of different materials was performed using various modern instruments such as XPS, SEM, EDS, XRD, FT-IR, BET…The comparison between modified and unmodified biochars for removing NH4+ and PO43− from water and the impact of different parameters on adsorption capacity of obtained materials were also performed. The results showed that the activation of biochar by magnesium led to changes in surface areas, pore volume, surface charge, and chemical properties of biochars and to increases in NH4+ and PO43− adsorption capacity. The adsorption of NH4+ and PO43− onto biochar-based nanocomposites followed both chemisorption and physisorption, were spontaneous, and endothermic. The NH4+ maximum uptake calculated according to Langmuir model were 21.32 mg/g for RMgN500 and 16.31 mg/g for CMgN500 while the PO43− maximum uptake were 117.77 mg/g and 52.24 mg/g for of RMgN500 and CMgN500, respectively. The desorption and recyclability of the RMgN500 and CMgN500 were very effective by using 0.5 M NaOH solution for PO43− and diluted HCl solutions for NH4+. This approach of synthesizing MgO nanoparticles impregnated in biochar matrix provided new opportunities in developing low-cost and highly efficient adsorbent to removal and recovery of NH4+ and PO43− from water.
dc.language	English
dc.publisher	ELSEVIER
dc.relation.ispartof	Journal of Water Process Engineering
dc.relation.isbasedon	10.1016/j.jwpe.2022.102702
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0905 Civil Engineering, 0907 Environmental Engineering
dc.title	A facile technique to prepare MgO-biochar nanocomposites for cationic and anionic nutrient removal
dc.type	Journal Article
utslib.citation.volume	47
utslib.for	0905 Civil Engineering
utslib.for	0907 Environmental Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	embargoed	*
utslib.copyright.embargo	2024-06-01T00:00:00+1000Z
dc.date.updated	2023-01-04T03:29:25Z
pubs.publication-status	Published
pubs.volume	47

Abstract:

The removal of NH4+ and PO43− from water using adsorbents produced from rice husk and corn cob byproducts was examined. The synthesis of MgO-biochar nanocomposites was conducted by magnesium activation under nitrogen atmosphere at 400 °C and 500 °C. The characterization of different materials was performed using various modern instruments such as XPS, SEM, EDS, XRD, FT-IR, BET…The comparison between modified and unmodified biochars for removing NH4+ and PO43− from water and the impact of different parameters on adsorption capacity of obtained materials were also performed. The results showed that the activation of biochar by magnesium led to changes in surface areas, pore volume, surface charge, and chemical properties of biochars and to increases in NH4+ and PO43− adsorption capacity. The adsorption of NH4+ and PO43− onto biochar-based nanocomposites followed both chemisorption and physisorption, were spontaneous, and endothermic. The NH4+ maximum uptake calculated according to Langmuir model were 21.32 mg/g for RMgN500 and 16.31 mg/g for CMgN500 while the PO43− maximum uptake were 117.77 mg/g and 52.24 mg/g for of RMgN500 and CMgN500, respectively. The desorption and recyclability of the RMgN500 and CMgN500 were very effective by using 0.5 M NaOH solution for PO43− and diluted HCl solutions for NH4+. This approach of synthesizing MgO nanoparticles impregnated in biochar matrix provided new opportunities in developing low-cost and highly efficient adsorbent to removal and recovery of NH4+ and PO43− from water.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/164678