Effect of biochar particles applied in bedding course of the innovative permeable pavement on enhancing nitrogen removal

Coconut shell biochar and bamboo biochar were added to the bedding courses of permeable pavements to improve nitrogen removal efficiency. This was expected to be particularly effective for innovative permeable pavements that increase evaporation of stored rainwater. The effects of the rainfall inten...

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Autores principales:	Yue Qi, Yong Liu, Duan-yang Qiu, Tian Li
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	biochar capillary column denitrification nitrogen removal permeable pavement Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/12e1ec02e4d64314a5437d7d957351f1
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spelling	oai:doaj.org-article:12e1ec02e4d64314a5437d7d957351f12021-11-06T11:24:21ZEffect of biochar particles applied in bedding course of the innovative permeable pavement on enhancing nitrogen removal0273-12231996-973210.2166/wst.2021.331https://doaj.org/article/12e1ec02e4d64314a5437d7d957351f12021-10-01T00:00:00Zhttp://wst.iwaponline.com/content/84/7/1693https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Coconut shell biochar and bamboo biochar were added to the bedding courses of permeable pavements to improve nitrogen removal efficiency. This was expected to be particularly effective for innovative permeable pavements that increase evaporation of stored rainwater. The effects of the rainfall intensity and ambient temperature on nitrogen removal were assessed. The NO3−-N removal rate for the pavements with biochar added and the blank controls were 48.6%–54.0% and 10.8%, respectively, at a rainfall intensity of 10 mm/h and temperatures of 22–28 °C. The total nitrogen removal rates for the pavements with biochar added and the blank controls were 52.6%–57.7% and 20%, respectively. Adding coconut shell and bamboo biochar improved denitrification without causing organic matter to be leached. Increasing the rainfall intensity and decreasing the temperature caused less nitrogen to be removed. The total nitrogen balance indicated that the innovative pavements and conventional pavements with the same biochar amendments removed 781.58 and 733.30 mg of nitrogen, respectively, suggesting that adding biochar improved the performances of the innovative pavements more than the conventional pavements. Quantitative polymerase chain reaction assays of bedding course samples indicated that adding biochar markedly increased the abundances of denitrifying microorganisms. HIGHLIGHTS Adding biochar (3%–6% w/w) to a permeable pavement (PP) bedding course can increase the amount of nitrogen removed obviously.; The innovative PP units with capillary columns performed better than the conventional PP units with the same amounts of biochar added.; Denitrification in the units with biochar added was markedly weakened during heavy rain and at ambient temperatures <10 °C.;Yue QiYong LiuDuan-yang QiuTian LiIWA Publishingarticlebiocharcapillary columndenitrificationnitrogen removalpermeable pavementEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 7, Pp 1693-1703 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	biochar capillary column denitrification nitrogen removal permeable pavement Environmental technology. Sanitary engineering TD1-1066
spellingShingle	biochar capillary column denitrification nitrogen removal permeable pavement Environmental technology. Sanitary engineering TD1-1066 Yue Qi Yong Liu Duan-yang Qiu Tian Li Effect of biochar particles applied in bedding course of the innovative permeable pavement on enhancing nitrogen removal
description	Coconut shell biochar and bamboo biochar were added to the bedding courses of permeable pavements to improve nitrogen removal efficiency. This was expected to be particularly effective for innovative permeable pavements that increase evaporation of stored rainwater. The effects of the rainfall intensity and ambient temperature on nitrogen removal were assessed. The NO3−-N removal rate for the pavements with biochar added and the blank controls were 48.6%–54.0% and 10.8%, respectively, at a rainfall intensity of 10 mm/h and temperatures of 22–28 °C. The total nitrogen removal rates for the pavements with biochar added and the blank controls were 52.6%–57.7% and 20%, respectively. Adding coconut shell and bamboo biochar improved denitrification without causing organic matter to be leached. Increasing the rainfall intensity and decreasing the temperature caused less nitrogen to be removed. The total nitrogen balance indicated that the innovative pavements and conventional pavements with the same biochar amendments removed 781.58 and 733.30 mg of nitrogen, respectively, suggesting that adding biochar improved the performances of the innovative pavements more than the conventional pavements. Quantitative polymerase chain reaction assays of bedding course samples indicated that adding biochar markedly increased the abundances of denitrifying microorganisms. HIGHLIGHTS Adding biochar (3%–6% w/w) to a permeable pavement (PP) bedding course can increase the amount of nitrogen removed obviously.; The innovative PP units with capillary columns performed better than the conventional PP units with the same amounts of biochar added.; Denitrification in the units with biochar added was markedly weakened during heavy rain and at ambient temperatures <10 °C.;
format	article
author	Yue Qi Yong Liu Duan-yang Qiu Tian Li
author_facet	Yue Qi Yong Liu Duan-yang Qiu Tian Li
author_sort	Yue Qi
title	Effect of biochar particles applied in bedding course of the innovative permeable pavement on enhancing nitrogen removal
title_short	Effect of biochar particles applied in bedding course of the innovative permeable pavement on enhancing nitrogen removal
title_full	Effect of biochar particles applied in bedding course of the innovative permeable pavement on enhancing nitrogen removal
title_fullStr	Effect of biochar particles applied in bedding course of the innovative permeable pavement on enhancing nitrogen removal
title_full_unstemmed	Effect of biochar particles applied in bedding course of the innovative permeable pavement on enhancing nitrogen removal
title_sort	effect of biochar particles applied in bedding course of the innovative permeable pavement on enhancing nitrogen removal
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/12e1ec02e4d64314a5437d7d957351f1
work_keys_str_mv	AT yueqi effectofbiocharparticlesappliedinbeddingcourseoftheinnovativepermeablepavementonenhancingnitrogenremoval AT yongliu effectofbiocharparticlesappliedinbeddingcourseoftheinnovativepermeablepavementonenhancingnitrogenremoval AT duanyangqiu effectofbiocharparticlesappliedinbeddingcourseoftheinnovativepermeablepavementonenhancingnitrogenremoval AT tianli effectofbiocharparticlesappliedinbeddingcourseoftheinnovativepermeablepavementonenhancingnitrogenremoval
_version_	1718443654236864512

Effect of biochar particles applied in bedding course of the innovative permeable pavement on enhancing nitrogen removal

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