Biochar and conventional compost reduce hysteresis and increase phosphorus desorbability in iron mining waste

Detalhes bibliográficos
Autor(a) principal: Guedes,Rafael Silva
Data de Publicação: 2021
Outros Autores: Pinto,Duane Azevedo, Ramos,Sílvio Junio, Dias,Yan Nunes, Caldeira Junior,Cecílio Fróis, Gastauer,Markus, Souza Filho,Pedro Walfir Martins e, Fernandes,Antonio Rodrigues
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Ciência do Solo (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832021000100509
Resumo: ABSTRACT: Phosphorus (P) fixation in the soil reduces the utilization of this element by plants and can be one of the main problems for fertilization management in soils containing Fe oxides. As a strategy to minimize the effects of P retention, organic materials, such as biochar or commercial composts, may be useful tools to maintain P availability and delay immobilization of this element in the soil, thereby benefiting, for example, the rehabilitation of areas impacted by Fe mining. The objective of this study was to evaluate the kinetics of P sorption and desorption and the hysteresis index in red mining waste from Fe mining subjected to açaí biochar and commercial compost amendments. Therefore, a substrate collected from Fe mining waste piles in the Carajás Mineral Province was incubated for 30 days with açaí biochar, commercial compost, and açaí biochar + commercial compost at a ratio of 90 % mining waste and 10 % organic amendment (w/w). The P sorption and desorption kinetics were evaluated in a solution containing 10 mg L−1 P at times from 0.5 to 48 h; the data were modeled according to a pseudo-first-order equation considering two types of reaction sites, and the hysteresis index was obtained by the difference between the sorption and desorption isotherms. Treatment of the mining substrate with açaí biochar reduced P sorption, while P desorption was increased by up to 60 % by applying biochar and/or commercial compost. Açaí biochar also reduced the hysteresis of P sorption from 78 to 54.8 %, in addition to slowing P fixation in this substrate. Thus, this study showed that açaí biochar and commercial compost may maximize the benefits of phosphate fertilization during the rehabilitation of areas impacted by Fe mining. However, as these composts can cause different effects on P dynamics in mining waste, their effects on other elements, such as micronutrients, whose availability may be affected, are important to be evaluated.
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spelling Biochar and conventional compost reduce hysteresis and increase phosphorus desorbability in iron mining wasteP kineticsoil recoveryCarajásorganic amendmentsABSTRACT: Phosphorus (P) fixation in the soil reduces the utilization of this element by plants and can be one of the main problems for fertilization management in soils containing Fe oxides. As a strategy to minimize the effects of P retention, organic materials, such as biochar or commercial composts, may be useful tools to maintain P availability and delay immobilization of this element in the soil, thereby benefiting, for example, the rehabilitation of areas impacted by Fe mining. The objective of this study was to evaluate the kinetics of P sorption and desorption and the hysteresis index in red mining waste from Fe mining subjected to açaí biochar and commercial compost amendments. Therefore, a substrate collected from Fe mining waste piles in the Carajás Mineral Province was incubated for 30 days with açaí biochar, commercial compost, and açaí biochar + commercial compost at a ratio of 90 % mining waste and 10 % organic amendment (w/w). The P sorption and desorption kinetics were evaluated in a solution containing 10 mg L−1 P at times from 0.5 to 48 h; the data were modeled according to a pseudo-first-order equation considering two types of reaction sites, and the hysteresis index was obtained by the difference between the sorption and desorption isotherms. Treatment of the mining substrate with açaí biochar reduced P sorption, while P desorption was increased by up to 60 % by applying biochar and/or commercial compost. Açaí biochar also reduced the hysteresis of P sorption from 78 to 54.8 %, in addition to slowing P fixation in this substrate. Thus, this study showed that açaí biochar and commercial compost may maximize the benefits of phosphate fertilization during the rehabilitation of areas impacted by Fe mining. However, as these composts can cause different effects on P dynamics in mining waste, their effects on other elements, such as micronutrients, whose availability may be affected, are important to be evaluated.Sociedade Brasileira de Ciência do Solo2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832021000100509Revista Brasileira de Ciência do Solo v.45 2021reponame:Revista Brasileira de Ciência do Solo (Online)instname:Sociedade Brasileira de Ciência do Solo (SBCS)instacron:SBCS10.36783/18069657rbcs20200174info:eu-repo/semantics/openAccessGuedes,Rafael SilvaPinto,Duane AzevedoRamos,Sílvio JunioDias,Yan NunesCaldeira Junior,Cecílio FróisGastauer,MarkusSouza Filho,Pedro Walfir Martins eFernandes,Antonio Rodrigueseng2021-07-21T00:00:00Zoai:scielo:S0100-06832021000100509Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=0100-0683&lng=es&nrm=isohttps://old.scielo.br/oai/scielo-oai.php||sbcs@ufv.br1806-96570100-0683opendoar:2021-07-21T00:00Revista Brasileira de Ciência do Solo (Online) - Sociedade Brasileira de Ciência do Solo (SBCS)false
dc.title.none.fl_str_mv Biochar and conventional compost reduce hysteresis and increase phosphorus desorbability in iron mining waste
title Biochar and conventional compost reduce hysteresis and increase phosphorus desorbability in iron mining waste
spellingShingle Biochar and conventional compost reduce hysteresis and increase phosphorus desorbability in iron mining waste
Guedes,Rafael Silva
P kinetic
soil recovery
Carajás
organic amendments
title_short Biochar and conventional compost reduce hysteresis and increase phosphorus desorbability in iron mining waste
title_full Biochar and conventional compost reduce hysteresis and increase phosphorus desorbability in iron mining waste
title_fullStr Biochar and conventional compost reduce hysteresis and increase phosphorus desorbability in iron mining waste
title_full_unstemmed Biochar and conventional compost reduce hysteresis and increase phosphorus desorbability in iron mining waste
title_sort Biochar and conventional compost reduce hysteresis and increase phosphorus desorbability in iron mining waste
author Guedes,Rafael Silva
author_facet Guedes,Rafael Silva
Pinto,Duane Azevedo
Ramos,Sílvio Junio
Dias,Yan Nunes
Caldeira Junior,Cecílio Fróis
Gastauer,Markus
Souza Filho,Pedro Walfir Martins e
Fernandes,Antonio Rodrigues
author_role author
author2 Pinto,Duane Azevedo
Ramos,Sílvio Junio
Dias,Yan Nunes
Caldeira Junior,Cecílio Fróis
Gastauer,Markus
Souza Filho,Pedro Walfir Martins e
Fernandes,Antonio Rodrigues
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Guedes,Rafael Silva
Pinto,Duane Azevedo
Ramos,Sílvio Junio
Dias,Yan Nunes
Caldeira Junior,Cecílio Fróis
Gastauer,Markus
Souza Filho,Pedro Walfir Martins e
Fernandes,Antonio Rodrigues
dc.subject.por.fl_str_mv P kinetic
soil recovery
Carajás
organic amendments
topic P kinetic
soil recovery
Carajás
organic amendments
description ABSTRACT: Phosphorus (P) fixation in the soil reduces the utilization of this element by plants and can be one of the main problems for fertilization management in soils containing Fe oxides. As a strategy to minimize the effects of P retention, organic materials, such as biochar or commercial composts, may be useful tools to maintain P availability and delay immobilization of this element in the soil, thereby benefiting, for example, the rehabilitation of areas impacted by Fe mining. The objective of this study was to evaluate the kinetics of P sorption and desorption and the hysteresis index in red mining waste from Fe mining subjected to açaí biochar and commercial compost amendments. Therefore, a substrate collected from Fe mining waste piles in the Carajás Mineral Province was incubated for 30 days with açaí biochar, commercial compost, and açaí biochar + commercial compost at a ratio of 90 % mining waste and 10 % organic amendment (w/w). The P sorption and desorption kinetics were evaluated in a solution containing 10 mg L−1 P at times from 0.5 to 48 h; the data were modeled according to a pseudo-first-order equation considering two types of reaction sites, and the hysteresis index was obtained by the difference between the sorption and desorption isotherms. Treatment of the mining substrate with açaí biochar reduced P sorption, while P desorption was increased by up to 60 % by applying biochar and/or commercial compost. Açaí biochar also reduced the hysteresis of P sorption from 78 to 54.8 %, in addition to slowing P fixation in this substrate. Thus, this study showed that açaí biochar and commercial compost may maximize the benefits of phosphate fertilization during the rehabilitation of areas impacted by Fe mining. However, as these composts can cause different effects on P dynamics in mining waste, their effects on other elements, such as micronutrients, whose availability may be affected, are important to be evaluated.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.language.iso.fl_str_mv eng
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dc.relation.none.fl_str_mv 10.36783/18069657rbcs20200174
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dc.publisher.none.fl_str_mv Sociedade Brasileira de Ciência do Solo
publisher.none.fl_str_mv Sociedade Brasileira de Ciência do Solo
dc.source.none.fl_str_mv Revista Brasileira de Ciência do Solo v.45 2021
reponame:Revista Brasileira de Ciência do Solo (Online)
instname:Sociedade Brasileira de Ciência do Solo (SBCS)
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instname_str Sociedade Brasileira de Ciência do Solo (SBCS)
instacron_str SBCS
institution SBCS
reponame_str Revista Brasileira de Ciência do Solo (Online)
collection Revista Brasileira de Ciência do Solo (Online)
repository.name.fl_str_mv Revista Brasileira de Ciência do Solo (Online) - Sociedade Brasileira de Ciência do Solo (SBCS)
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