Induced changes of pyrolysis temperature on the physicochemical traits of sewage sludge and on the potential ecological risks

Abstract Biochar from sewage sludge is a low-cost sorbent that may be used for several environmental functions. This study evaluates the induced effects of pyrolysis temperature on the physicochemical characteristics of sewage sludge (SS) biochar produced at 350 (SSB350), 450 (SSB450) and 600 (SSB60...

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Autores principales:	Claudineia de Souza Souza, Marcela Rebouças Bomfim, Maria da Conceição de Almeida, Lucas de Souza Alves, Welder Neves de Santana, Itamar Carlos da Silva Amorim, Jorge Antonio Gonzaga Santos
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/88b271564215466780ae4daceaeadabe
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spelling	oai:doaj.org-article:88b271564215466780ae4daceaeadabe2021-12-02T14:12:46ZInduced changes of pyrolysis temperature on the physicochemical traits of sewage sludge and on the potential ecological risks10.1038/s41598-020-79658-42045-2322https://doaj.org/article/88b271564215466780ae4daceaeadabe2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-79658-4https://doaj.org/toc/2045-2322Abstract Biochar from sewage sludge is a low-cost sorbent that may be used for several environmental functions. This study evaluates the induced effects of pyrolysis temperature on the physicochemical characteristics of sewage sludge (SS) biochar produced at 350 (SSB350), 450 (SSB450) and 600 (SSB600), based on the metal enrichment index, metal mobility index (MMI), and potential ecological risk index (PERI) of Cd, Cu, Pb, and Zn. Increased pyrolysis temperature reduced the biochar concentration of elements that are lost as volatile compounds (C, N, H, O, and S), while the concentration of stable aromatic carbon, ash, alkalinity, some macro (Ca, Mg, P2O5, and K2O) and micronutrients (Cu and Zn), and toxic elements such as Pb and Cd increased. Increasing the pyrolysis temperature is also important in the transformation of metals from toxic and available forms into more stable potentially available and non-available forms. Based on the individual potential ecological risk index, Cd in the SS and SSB450 were in the moderate and considerable contamination ranges, respectively. For all pyrolysis temperature biochar Cd was the highest metal contributor to the PERI. Despite this, the potential ecological risk index of the SS and SSBs was graded as low.Claudineia de Souza SouzaMarcela Rebouças BomfimMaria da Conceição de AlmeidaLucas de Souza AlvesWelder Neves de SantanaItamar Carlos da Silva AmorimJorge Antonio Gonzaga SantosNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Claudineia de Souza Souza Marcela Rebouças Bomfim Maria da Conceição de Almeida Lucas de Souza Alves Welder Neves de Santana Itamar Carlos da Silva Amorim Jorge Antonio Gonzaga Santos Induced changes of pyrolysis temperature on the physicochemical traits of sewage sludge and on the potential ecological risks
description	Abstract Biochar from sewage sludge is a low-cost sorbent that may be used for several environmental functions. This study evaluates the induced effects of pyrolysis temperature on the physicochemical characteristics of sewage sludge (SS) biochar produced at 350 (SSB350), 450 (SSB450) and 600 (SSB600), based on the metal enrichment index, metal mobility index (MMI), and potential ecological risk index (PERI) of Cd, Cu, Pb, and Zn. Increased pyrolysis temperature reduced the biochar concentration of elements that are lost as volatile compounds (C, N, H, O, and S), while the concentration of stable aromatic carbon, ash, alkalinity, some macro (Ca, Mg, P2O5, and K2O) and micronutrients (Cu and Zn), and toxic elements such as Pb and Cd increased. Increasing the pyrolysis temperature is also important in the transformation of metals from toxic and available forms into more stable potentially available and non-available forms. Based on the individual potential ecological risk index, Cd in the SS and SSB450 were in the moderate and considerable contamination ranges, respectively. For all pyrolysis temperature biochar Cd was the highest metal contributor to the PERI. Despite this, the potential ecological risk index of the SS and SSBs was graded as low.
format	article
author	Claudineia de Souza Souza Marcela Rebouças Bomfim Maria da Conceição de Almeida Lucas de Souza Alves Welder Neves de Santana Itamar Carlos da Silva Amorim Jorge Antonio Gonzaga Santos
author_facet	Claudineia de Souza Souza Marcela Rebouças Bomfim Maria da Conceição de Almeida Lucas de Souza Alves Welder Neves de Santana Itamar Carlos da Silva Amorim Jorge Antonio Gonzaga Santos
author_sort	Claudineia de Souza Souza
title	Induced changes of pyrolysis temperature on the physicochemical traits of sewage sludge and on the potential ecological risks
title_short	Induced changes of pyrolysis temperature on the physicochemical traits of sewage sludge and on the potential ecological risks
title_full	Induced changes of pyrolysis temperature on the physicochemical traits of sewage sludge and on the potential ecological risks
title_fullStr	Induced changes of pyrolysis temperature on the physicochemical traits of sewage sludge and on the potential ecological risks
title_full_unstemmed	Induced changes of pyrolysis temperature on the physicochemical traits of sewage sludge and on the potential ecological risks
title_sort	induced changes of pyrolysis temperature on the physicochemical traits of sewage sludge and on the potential ecological risks
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/88b271564215466780ae4daceaeadabe
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Induced changes of pyrolysis temperature on the physicochemical traits of sewage sludge and on the potential ecological risks

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