Removal of Nitrogen and Phosphorus in Synthetic Stormwater Runoff by a Porous Asphalt Pavement System with Modified Zeolite Powder Porous Microsphere as a Filter Column

Porous asphalt pavement (PAP) system is a widely used treatment measure in sustainable stormwater management and groundwater recharge, but their variable performance in nitrogen (N) and phosphorus (P) removal requires further reinforcement prior to widespread uptake. Two laboratory-scale PAP systems...

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Autores principales:	Hui Luo, Baojie He, Wenhao Zhang, Zhaoqian Jing
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	nutrients removal porous asphalt pavement system modified zeolite powder porous microspheres ion exchange Nemerow pollution index Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/8c470358453249ebb5f659b2862ac651
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spelling	oai:doaj.org-article:8c470358453249ebb5f659b2862ac6512021-11-25T16:38:55ZRemoval of Nitrogen and Phosphorus in Synthetic Stormwater Runoff by a Porous Asphalt Pavement System with Modified Zeolite Powder Porous Microsphere as a Filter Column10.3390/app1122108102076-3417https://doaj.org/article/8c470358453249ebb5f659b2862ac6512021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/10810https://doaj.org/toc/2076-3417Porous asphalt pavement (PAP) system is a widely used treatment measure in sustainable stormwater management and groundwater recharge, but their variable performance in nitrogen (N) and phosphorus (P) removal requires further reinforcement prior to widespread uptake. Two laboratory-scale PAP systems were developed by comparing limestone bedding and zeolite incorporated into modified zeolite powder porous microsphere (MZP-PM) as a filter column under a typical rainfall. The PAP system of zeolite bedding incorporated into MZP-PM (a weight less than 5% of zeolite) removed 74.5% to 90.6% of ammonium (NH<sub>4</sub><sup>+</sup>-N) and 72.9% to 92.4% of total phosphate (TP) from the influent, as compared with 25.7% to 62.7% of NH<sub>4</sub><sup>+</sup>-N and 32.6% to 56.4% of TP by that of the limestone as bed material. This improvement was presumably due to MZP-PM’s high adsorption capacity and surface complexation. The formation of ≡(La)(OH)PO<sub>2</sub> was verified to be the dominant pathway for selective phosphate adsorption by MZP-PM and ion-exchange was proved to be the main removal process for ammonium. This study provides promising results for improving N and P removal by modifying a porous asphalt pavement system to include an MZP-PM adsorbent column as a post-treatment.Hui LuoBaojie HeWenhao ZhangZhaoqian JingMDPI AGarticlenutrients removalporous asphalt pavement systemmodified zeolite powder porous microspheresion exchangeNemerow pollution indexTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10810, p 10810 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	nutrients removal porous asphalt pavement system modified zeolite powder porous microspheres ion exchange Nemerow pollution index Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	nutrients removal porous asphalt pavement system modified zeolite powder porous microspheres ion exchange Nemerow pollution index Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Hui Luo Baojie He Wenhao Zhang Zhaoqian Jing Removal of Nitrogen and Phosphorus in Synthetic Stormwater Runoff by a Porous Asphalt Pavement System with Modified Zeolite Powder Porous Microsphere as a Filter Column
description	Porous asphalt pavement (PAP) system is a widely used treatment measure in sustainable stormwater management and groundwater recharge, but their variable performance in nitrogen (N) and phosphorus (P) removal requires further reinforcement prior to widespread uptake. Two laboratory-scale PAP systems were developed by comparing limestone bedding and zeolite incorporated into modified zeolite powder porous microsphere (MZP-PM) as a filter column under a typical rainfall. The PAP system of zeolite bedding incorporated into MZP-PM (a weight less than 5% of zeolite) removed 74.5% to 90.6% of ammonium (NH<sub>4</sub><sup>+</sup>-N) and 72.9% to 92.4% of total phosphate (TP) from the influent, as compared with 25.7% to 62.7% of NH<sub>4</sub><sup>+</sup>-N and 32.6% to 56.4% of TP by that of the limestone as bed material. This improvement was presumably due to MZP-PM’s high adsorption capacity and surface complexation. The formation of ≡(La)(OH)PO<sub>2</sub> was verified to be the dominant pathway for selective phosphate adsorption by MZP-PM and ion-exchange was proved to be the main removal process for ammonium. This study provides promising results for improving N and P removal by modifying a porous asphalt pavement system to include an MZP-PM adsorbent column as a post-treatment.
format	article
author	Hui Luo Baojie He Wenhao Zhang Zhaoqian Jing
author_facet	Hui Luo Baojie He Wenhao Zhang Zhaoqian Jing
author_sort	Hui Luo
title	Removal of Nitrogen and Phosphorus in Synthetic Stormwater Runoff by a Porous Asphalt Pavement System with Modified Zeolite Powder Porous Microsphere as a Filter Column
title_short	Removal of Nitrogen and Phosphorus in Synthetic Stormwater Runoff by a Porous Asphalt Pavement System with Modified Zeolite Powder Porous Microsphere as a Filter Column
title_full	Removal of Nitrogen and Phosphorus in Synthetic Stormwater Runoff by a Porous Asphalt Pavement System with Modified Zeolite Powder Porous Microsphere as a Filter Column
title_fullStr	Removal of Nitrogen and Phosphorus in Synthetic Stormwater Runoff by a Porous Asphalt Pavement System with Modified Zeolite Powder Porous Microsphere as a Filter Column
title_full_unstemmed	Removal of Nitrogen and Phosphorus in Synthetic Stormwater Runoff by a Porous Asphalt Pavement System with Modified Zeolite Powder Porous Microsphere as a Filter Column
title_sort	removal of nitrogen and phosphorus in synthetic stormwater runoff by a porous asphalt pavement system with modified zeolite powder porous microsphere as a filter column
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/8c470358453249ebb5f659b2862ac651
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Removal of Nitrogen and Phosphorus in Synthetic Stormwater Runoff by a Porous Asphalt Pavement System with Modified Zeolite Powder Porous Microsphere as a Filter Column

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