Dissolved organic matter byproducts from combined low-level alkaline and mechanical treatment of sludge: species, and their bioavailability

Low-level alkalinity (pH 9–10) coupled with ultrasonic or mechanical cutting with different energy input for obtaining carbon sources were tested for sludge pretreatment process before anaerobic sludge digestion. The differences between the primary sludge (PS) and waste activated sludge (WAS)-derive...

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Autores principales:	Qing Tian, Pengbo Jiao, Haoliang Lu, Yanbin Zhu, Sand Wolfgang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	amino acids bio-nutrient removal (bnr) low-level alkaline and mechanical treatment sludge carbon source recovery ultrasonication Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/c99a2c1986ad4ca1b0b41f1ea4a72995
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spelling	oai:doaj.org-article:c99a2c1986ad4ca1b0b41f1ea4a729952021-11-06T10:52:43ZDissolved organic matter byproducts from combined low-level alkaline and mechanical treatment of sludge: species, and their bioavailability0273-12231996-973210.2166/wst.2021.059https://doaj.org/article/c99a2c1986ad4ca1b0b41f1ea4a729952021-03-01T00:00:00Zhttp://wst.iwaponline.com/content/83/6/1446https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Low-level alkalinity (pH 9–10) coupled with ultrasonic or mechanical cutting with different energy input for obtaining carbon sources were tested for sludge pretreatment process before anaerobic sludge digestion. The differences between the primary sludge (PS) and waste activated sludge (WAS)-derived dissolved organic matter (DOM) species were evaluated for their bioavailability and affinity (in the form of amino acids) to the bio-nutrient removal (BNR) biomass. Soluble microbial by-product-like substances as the predominant DOM components in the raw PS and WAS increased by 23 and 22%, respectively, after low-level alkaline treatment (pH 9–10) and ultrasonication. In addition, the protein components were degraded further as free amino acids (FAAs). The sludge-derived aspartate, glutamate, followed by arginine were the most commonly used FAAs by the BNR biomass. The pattern of recovering this special sludge-derived carbon source to enhance P removal and recovery in the BNR process is depicted. HIGHLIGHTS Ultrasonic treatment of sludge has the advantage of efficiently producing non-fermentative carbon sources rich in amino acids.; Soluble microbial by-product-like substances were the main DOM components released by ultrasonication treatment of sludge.; The BNR communities showed high affinity to the ionized amino acids contained in the sonication-induced sludge carbon source.;Qing TianPengbo JiaoHaoliang LuYanbin ZhuSand WolfgangIWA Publishingarticleamino acidsbio-nutrient removal (bnr)low-level alkaline and mechanical treatmentsludge carbon source recoveryultrasonicationEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 6, Pp 1446-1458 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	amino acids bio-nutrient removal (bnr) low-level alkaline and mechanical treatment sludge carbon source recovery ultrasonication Environmental technology. Sanitary engineering TD1-1066
spellingShingle	amino acids bio-nutrient removal (bnr) low-level alkaline and mechanical treatment sludge carbon source recovery ultrasonication Environmental technology. Sanitary engineering TD1-1066 Qing Tian Pengbo Jiao Haoliang Lu Yanbin Zhu Sand Wolfgang Dissolved organic matter byproducts from combined low-level alkaline and mechanical treatment of sludge: species, and their bioavailability
description	Low-level alkalinity (pH 9–10) coupled with ultrasonic or mechanical cutting with different energy input for obtaining carbon sources were tested for sludge pretreatment process before anaerobic sludge digestion. The differences between the primary sludge (PS) and waste activated sludge (WAS)-derived dissolved organic matter (DOM) species were evaluated for their bioavailability and affinity (in the form of amino acids) to the bio-nutrient removal (BNR) biomass. Soluble microbial by-product-like substances as the predominant DOM components in the raw PS and WAS increased by 23 and 22%, respectively, after low-level alkaline treatment (pH 9–10) and ultrasonication. In addition, the protein components were degraded further as free amino acids (FAAs). The sludge-derived aspartate, glutamate, followed by arginine were the most commonly used FAAs by the BNR biomass. The pattern of recovering this special sludge-derived carbon source to enhance P removal and recovery in the BNR process is depicted. HIGHLIGHTS Ultrasonic treatment of sludge has the advantage of efficiently producing non-fermentative carbon sources rich in amino acids.; Soluble microbial by-product-like substances were the main DOM components released by ultrasonication treatment of sludge.; The BNR communities showed high affinity to the ionized amino acids contained in the sonication-induced sludge carbon source.;
format	article
author	Qing Tian Pengbo Jiao Haoliang Lu Yanbin Zhu Sand Wolfgang
author_facet	Qing Tian Pengbo Jiao Haoliang Lu Yanbin Zhu Sand Wolfgang
author_sort	Qing Tian
title	Dissolved organic matter byproducts from combined low-level alkaline and mechanical treatment of sludge: species, and their bioavailability
title_short	Dissolved organic matter byproducts from combined low-level alkaline and mechanical treatment of sludge: species, and their bioavailability
title_full	Dissolved organic matter byproducts from combined low-level alkaline and mechanical treatment of sludge: species, and their bioavailability
title_fullStr	Dissolved organic matter byproducts from combined low-level alkaline and mechanical treatment of sludge: species, and their bioavailability
title_full_unstemmed	Dissolved organic matter byproducts from combined low-level alkaline and mechanical treatment of sludge: species, and their bioavailability
title_sort	dissolved organic matter byproducts from combined low-level alkaline and mechanical treatment of sludge: species, and their bioavailability
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/c99a2c1986ad4ca1b0b41f1ea4a72995
work_keys_str_mv	AT qingtian dissolvedorganicmatterbyproductsfromcombinedlowlevelalkalineandmechanicaltreatmentofsludgespeciesandtheirbioavailability AT pengbojiao dissolvedorganicmatterbyproductsfromcombinedlowlevelalkalineandmechanicaltreatmentofsludgespeciesandtheirbioavailability AT haolianglu dissolvedorganicmatterbyproductsfromcombinedlowlevelalkalineandmechanicaltreatmentofsludgespeciesandtheirbioavailability AT yanbinzhu dissolvedorganicmatterbyproductsfromcombinedlowlevelalkalineandmechanicaltreatmentofsludgespeciesandtheirbioavailability AT sandwolfgang dissolvedorganicmatterbyproductsfromcombinedlowlevelalkalineandmechanicaltreatmentofsludgespeciesandtheirbioavailability
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Dissolved organic matter byproducts from combined low-level alkaline and mechanical treatment of sludge: species, and their bioavailability

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