Production and modification of hydrochar from anaerobically digested cattail for adsorbing ammonium and phosphorous in wastewater

Water contamination by nitrogen and phosphorus ions has a direct consequence of eutrophication to the ecosystem. The objective of this study is to investigate the production of hydrochars by acetic acid or sodium hydroxide assisted hydrothermal carbonization (HTC), various activation methods, and th...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Sanjaya Ghimire, Lijun Wang, Bo Zhang, Xin Li, Abolghasem Shahbazi
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	adsorption ammonium hydrochar isotherm phosphorus Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/63c3e66c650e46cfb70c7cd9654ea229
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:63c3e66c650e46cfb70c7cd9654ea229
record_format	dspace
spelling	oai:doaj.org-article:63c3e66c650e46cfb70c7cd9654ea2292021-11-06T11:24:19ZProduction and modification of hydrochar from anaerobically digested cattail for adsorbing ammonium and phosphorous in wastewater0273-12231996-973210.2166/wst.2021.378https://doaj.org/article/63c3e66c650e46cfb70c7cd9654ea2292021-10-01T00:00:00Zhttp://wst.iwaponline.com/content/84/7/1678https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Water contamination by nitrogen and phosphorus ions has a direct consequence of eutrophication to the ecosystem. The objective of this study is to investigate the production of hydrochars by acetic acid or sodium hydroxide assisted hydrothermal carbonization (HTC), various activation methods, and the potential of hydrochar as an adsorbent to remove NH4+-N and PO43−-P from wastewater. The results showed that acetic acid or sodium hydroxide assisted HTC and activation with magnesium chloride or air could improve the surface properties of hydrochar. Acetic acid modification generated extensive oxygenated functional groups, while sodium hydroxide modification produced hydrochar with a high N/C ratio and surface aromaticity. Treating hydrochar with magnesium chloride could impregnate nano-magnesium particles on the hydrochar, thereby improving the ability to remove N and P. Air activation of hydrochar resulted in more oxygen containing functional groups. The NH4+-N and PO43−-P adsorption capacities of these hydrochars ranged from 92.6 to 122.4mg/g and 1.6 to 15.8mg/g, respectively. The adsorption capacity of hydrochars in swine wastewater is similar to the results of artificial wastewater. The results suggested that Mg-nanoparticle dispersion and oxygen-containing functional groups played a major role in adsorption than ion exchange and physisorption. HIGHLIGHTS Hydrochars were produced by acetic acid and sodium hydroxide assisted HTL.; Magnesium chloride or air activation could improve the surface properties of hydrochar.; Hydrochar activated by using MgCl2 and air substantially increased the adsorption capacity.; Mg-nanoparticle dispersion and oxygen containing functional groups played a major role in adsorption.;Sanjaya GhimireLijun WangBo ZhangXin LiAbolghasem ShahbaziIWA PublishingarticleadsorptionammoniumhydrocharisothermphosphorusEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 7, Pp 1678-1692 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adsorption ammonium hydrochar isotherm phosphorus Environmental technology. Sanitary engineering TD1-1066
spellingShingle	adsorption ammonium hydrochar isotherm phosphorus Environmental technology. Sanitary engineering TD1-1066 Sanjaya Ghimire Lijun Wang Bo Zhang Xin Li Abolghasem Shahbazi Production and modification of hydrochar from anaerobically digested cattail for adsorbing ammonium and phosphorous in wastewater
description	Water contamination by nitrogen and phosphorus ions has a direct consequence of eutrophication to the ecosystem. The objective of this study is to investigate the production of hydrochars by acetic acid or sodium hydroxide assisted hydrothermal carbonization (HTC), various activation methods, and the potential of hydrochar as an adsorbent to remove NH4+-N and PO43−-P from wastewater. The results showed that acetic acid or sodium hydroxide assisted HTC and activation with magnesium chloride or air could improve the surface properties of hydrochar. Acetic acid modification generated extensive oxygenated functional groups, while sodium hydroxide modification produced hydrochar with a high N/C ratio and surface aromaticity. Treating hydrochar with magnesium chloride could impregnate nano-magnesium particles on the hydrochar, thereby improving the ability to remove N and P. Air activation of hydrochar resulted in more oxygen containing functional groups. The NH4+-N and PO43−-P adsorption capacities of these hydrochars ranged from 92.6 to 122.4mg/g and 1.6 to 15.8mg/g, respectively. The adsorption capacity of hydrochars in swine wastewater is similar to the results of artificial wastewater. The results suggested that Mg-nanoparticle dispersion and oxygen-containing functional groups played a major role in adsorption than ion exchange and physisorption. HIGHLIGHTS Hydrochars were produced by acetic acid and sodium hydroxide assisted HTL.; Magnesium chloride or air activation could improve the surface properties of hydrochar.; Hydrochar activated by using MgCl2 and air substantially increased the adsorption capacity.; Mg-nanoparticle dispersion and oxygen containing functional groups played a major role in adsorption.;
format	article
author	Sanjaya Ghimire Lijun Wang Bo Zhang Xin Li Abolghasem Shahbazi
author_facet	Sanjaya Ghimire Lijun Wang Bo Zhang Xin Li Abolghasem Shahbazi
author_sort	Sanjaya Ghimire
title	Production and modification of hydrochar from anaerobically digested cattail for adsorbing ammonium and phosphorous in wastewater
title_short	Production and modification of hydrochar from anaerobically digested cattail for adsorbing ammonium and phosphorous in wastewater
title_full	Production and modification of hydrochar from anaerobically digested cattail for adsorbing ammonium and phosphorous in wastewater
title_fullStr	Production and modification of hydrochar from anaerobically digested cattail for adsorbing ammonium and phosphorous in wastewater
title_full_unstemmed	Production and modification of hydrochar from anaerobically digested cattail for adsorbing ammonium and phosphorous in wastewater
title_sort	production and modification of hydrochar from anaerobically digested cattail for adsorbing ammonium and phosphorous in wastewater
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/63c3e66c650e46cfb70c7cd9654ea229
work_keys_str_mv	AT sanjayaghimire productionandmodificationofhydrocharfromanaerobicallydigestedcattailforadsorbingammoniumandphosphorousinwastewater AT lijunwang productionandmodificationofhydrocharfromanaerobicallydigestedcattailforadsorbingammoniumandphosphorousinwastewater AT bozhang productionandmodificationofhydrocharfromanaerobicallydigestedcattailforadsorbingammoniumandphosphorousinwastewater AT xinli productionandmodificationofhydrocharfromanaerobicallydigestedcattailforadsorbingammoniumandphosphorousinwastewater AT abolghasemshahbazi productionandmodificationofhydrocharfromanaerobicallydigestedcattailforadsorbingammoniumandphosphorousinwastewater
_version_	1718443671523688448

Production and modification of hydrochar from anaerobically digested cattail for adsorbing ammonium and phosphorous in wastewater

Ejemplares similares