Phosphorus recovery and recycling from model animal wastewaters using materials prepared from rice straw and corn cobs

Anthropogenic loss of phosphorus to surface waters not only causes environmental problems but depletes valuable phosphorus reserves. In this study, magnesium amended biochars and magnesium silicate, synthesized from corn cobs and rice straw, respectively, were evaluated for phosphorus uptake includi...

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Autores principales:	Yifan Ding, David A. Sabatini, Elizabeth C. Butler
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	corn cobs magnesium modified biochar magnesium silicate phosphorus reuse rice straw Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/94c11955b83e45f48dcbdce7ca0ab2c1
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spelling	oai:doaj.org-article:94c11955b83e45f48dcbdce7ca0ab2c12021-11-06T10:56:09ZPhosphorus recovery and recycling from model animal wastewaters using materials prepared from rice straw and corn cobs0273-12231996-973210.2166/wst.2021.094https://doaj.org/article/94c11955b83e45f48dcbdce7ca0ab2c12021-04-01T00:00:00Zhttp://wst.iwaponline.com/content/83/8/1893https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Anthropogenic loss of phosphorus to surface waters not only causes environmental problems but depletes valuable phosphorus reserves. In this study, magnesium amended biochars and magnesium silicate, synthesized from corn cobs and rice straw, respectively, were evaluated for phosphorus uptake including the effects of pH and alkalinity. The overall goal was to close the phosphorus loop by recovering phosphorus from animal waste and reusing it as fertilizer. After phosphorus uptake, spent materials were tested for phosphorus release using modified soil tests representing different soil pH and alkalinity conditions. In experiments using model animal wastewaters containing both ammonia and bicarbonate alkalinity, dissolved phosphorus was removed by struvite (MgNH4PO4·6H2O) formation, whereas in deionized water, dissolved phosphorus was removed by adsorption. Alkalinity in the model animal wastewaters competed with phosphate for dissolved or solid-associated magnesium, thereby reducing phosphorus uptake. Spent materials released significant phosphorus in waters with bicarbonate alkalinity. This work shows that abundant agricultural wastes can be used to synthesize solids for phosphorus uptake, with the spent materials having potential application as fertilizers. HIGHLIGHTS Magnesium modified biochar and magnesium silicate were prepared from corn cobs and rice straw, respectively.; These materials removed phosphorus from model wastewaters by struvite precipitation.; Phosphorus uptake was limited by wastewater alkalinity.; Spent materials released phosphorus under conditions mimicking calcareous soils.; These materials show promise for phosphorus recovery and reuse.;Yifan DingDavid A. SabatiniElizabeth C. ButlerIWA Publishingarticlecorn cobsmagnesium modified biocharmagnesium silicatephosphorus reuserice strawEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 8, Pp 1893-1906 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	corn cobs magnesium modified biochar magnesium silicate phosphorus reuse rice straw Environmental technology. Sanitary engineering TD1-1066
spellingShingle	corn cobs magnesium modified biochar magnesium silicate phosphorus reuse rice straw Environmental technology. Sanitary engineering TD1-1066 Yifan Ding David A. Sabatini Elizabeth C. Butler Phosphorus recovery and recycling from model animal wastewaters using materials prepared from rice straw and corn cobs
description	Anthropogenic loss of phosphorus to surface waters not only causes environmental problems but depletes valuable phosphorus reserves. In this study, magnesium amended biochars and magnesium silicate, synthesized from corn cobs and rice straw, respectively, were evaluated for phosphorus uptake including the effects of pH and alkalinity. The overall goal was to close the phosphorus loop by recovering phosphorus from animal waste and reusing it as fertilizer. After phosphorus uptake, spent materials were tested for phosphorus release using modified soil tests representing different soil pH and alkalinity conditions. In experiments using model animal wastewaters containing both ammonia and bicarbonate alkalinity, dissolved phosphorus was removed by struvite (MgNH4PO4·6H2O) formation, whereas in deionized water, dissolved phosphorus was removed by adsorption. Alkalinity in the model animal wastewaters competed with phosphate for dissolved or solid-associated magnesium, thereby reducing phosphorus uptake. Spent materials released significant phosphorus in waters with bicarbonate alkalinity. This work shows that abundant agricultural wastes can be used to synthesize solids for phosphorus uptake, with the spent materials having potential application as fertilizers. HIGHLIGHTS Magnesium modified biochar and magnesium silicate were prepared from corn cobs and rice straw, respectively.; These materials removed phosphorus from model wastewaters by struvite precipitation.; Phosphorus uptake was limited by wastewater alkalinity.; Spent materials released phosphorus under conditions mimicking calcareous soils.; These materials show promise for phosphorus recovery and reuse.;
format	article
author	Yifan Ding David A. Sabatini Elizabeth C. Butler
author_facet	Yifan Ding David A. Sabatini Elizabeth C. Butler
author_sort	Yifan Ding
title	Phosphorus recovery and recycling from model animal wastewaters using materials prepared from rice straw and corn cobs
title_short	Phosphorus recovery and recycling from model animal wastewaters using materials prepared from rice straw and corn cobs
title_full	Phosphorus recovery and recycling from model animal wastewaters using materials prepared from rice straw and corn cobs
title_fullStr	Phosphorus recovery and recycling from model animal wastewaters using materials prepared from rice straw and corn cobs
title_full_unstemmed	Phosphorus recovery and recycling from model animal wastewaters using materials prepared from rice straw and corn cobs
title_sort	phosphorus recovery and recycling from model animal wastewaters using materials prepared from rice straw and corn cobs
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/94c11955b83e45f48dcbdce7ca0ab2c1
work_keys_str_mv	AT yifanding phosphorusrecoveryandrecyclingfrommodelanimalwastewatersusingmaterialspreparedfromricestrawandcorncobs AT davidasabatini phosphorusrecoveryandrecyclingfrommodelanimalwastewatersusingmaterialspreparedfromricestrawandcorncobs AT elizabethcbutler phosphorusrecoveryandrecyclingfrommodelanimalwastewatersusingmaterialspreparedfromricestrawandcorncobs
_version_	1718443747200466944

Phosphorus recovery and recycling from model animal wastewaters using materials prepared from rice straw and corn cobs

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