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Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
26/08/2021 |
Data da última atualização: |
26/10/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
DELA PICCOLLA, C.; HESTERBERG, D.; MURAOKA, T.; NOVOTNY, E. H. |
Afiliação: |
CRISTIANO DELA PICCOLLA, USP/ESALQ; DEAN HESTERBERG, NORTH CAROLINA STATE UNIVERSITY; TAKASHI MURAOKA, USP; ETELVINO HENRIQUE NOVOTNY, CNPS. |
Título: |
Optimizing pyrolysis conditions for recycling pig bones into phosphate fertilizer. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Waste Management, v. 131, p. 249-257, Jul. 2021. |
DOI: |
https://doi-org.ez103.periodicos.capes.gov.br/10.1016/j.wasman.2021.06.012 |
Idioma: |
Inglês |
Conteúdo: |
Selecting pyrolysis parameters for recycling P-rich and hazardous biowastes, such as bones, into fertilizers is still a challenge. Our objective was to improve pyrolysis procedures of pig bones for the production of P fertilizers. Bone chars were produced by pyrolysis at 400, 550, or 800 °C with no gas addition; 550 and 800 °C under N2; 800 °C under steam flux, using calcination at 800 °C as control treatment. Synchrotron-based X-ray diffraction and X-ray absorption near edge structure spectroscopy at the P and Ca K- and L-edges showed that these bone chars were largely composed of hydroxyapatite. Hydroxyapatite crystallization was inhibited by pyrolysis conducted in the absence of oxygen at 400, 550, or 800 °C, either under no gas or under N2 flux. The clogging of pores by lack of organic compounds removal was hypothesized to cause low surface area of 400 °C bone char, resulting in a fertilizer with citric-acid soluble P as low as calcination, while 550 and 800 °C bone chars obtained in absence of oxygen showed greater porosity, surface area, and citric acid-soluble P than steamed or calcined samples at 800 °C. Although extractable phosphate in water and neutral-ammonium-citrate showed trends comparable to those from citric acid, it was negligible for all heated materials. Since it is possible to produce bone chars with different chemical, physical and crystallographic properties by managing pyrolysis conditions, bone chars can be designed to increase their suitability as P fertilizers for different purposes, such as high solubility or slow P release. MenosSelecting pyrolysis parameters for recycling P-rich and hazardous biowastes, such as bones, into fertilizers is still a challenge. Our objective was to improve pyrolysis procedures of pig bones for the production of P fertilizers. Bone chars were produced by pyrolysis at 400, 550, or 800 °C with no gas addition; 550 and 800 °C under N2; 800 °C under steam flux, using calcination at 800 °C as control treatment. Synchrotron-based X-ray diffraction and X-ray absorption near edge structure spectroscopy at the P and Ca K- and L-edges showed that these bone chars were largely composed of hydroxyapatite. Hydroxyapatite crystallization was inhibited by pyrolysis conducted in the absence of oxygen at 400, 550, or 800 °C, either under no gas or under N2 flux. The clogging of pores by lack of organic compounds removal was hypothesized to cause low surface area of 400 °C bone char, resulting in a fertilizer with citric-acid soluble P as low as calcination, while 550 and 800 °C bone chars obtained in absence of oxygen showed greater porosity, surface area, and citric acid-soluble P than steamed or calcined samples at 800 °C. Although extractable phosphate in water and neutral-ammonium-citrate showed trends comparable to those from citric acid, it was negligible for all heated materials. Since it is possible to produce bone chars with different chemical, physical and crystallographic properties by managing pyrolysis conditions, bone chars can be designed to increase their suitability as P... Mostrar Tudo |
Palavras-Chave: |
Bone ash; Bone treatment; SXRD; Synchrotron; XANES. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02280naa a2200229 a 4500 001 2133876 005 2021-10-26 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi-org.ez103.periodicos.capes.gov.br/10.1016/j.wasman.2021.06.012$2DOI 100 1 $aDELA PICCOLLA, C. 245 $aOptimizing pyrolysis conditions for recycling pig bones into phosphate fertilizer.$h[electronic resource] 260 $c2021 520 $aSelecting pyrolysis parameters for recycling P-rich and hazardous biowastes, such as bones, into fertilizers is still a challenge. Our objective was to improve pyrolysis procedures of pig bones for the production of P fertilizers. Bone chars were produced by pyrolysis at 400, 550, or 800 °C with no gas addition; 550 and 800 °C under N2; 800 °C under steam flux, using calcination at 800 °C as control treatment. Synchrotron-based X-ray diffraction and X-ray absorption near edge structure spectroscopy at the P and Ca K- and L-edges showed that these bone chars were largely composed of hydroxyapatite. Hydroxyapatite crystallization was inhibited by pyrolysis conducted in the absence of oxygen at 400, 550, or 800 °C, either under no gas or under N2 flux. The clogging of pores by lack of organic compounds removal was hypothesized to cause low surface area of 400 °C bone char, resulting in a fertilizer with citric-acid soluble P as low as calcination, while 550 and 800 °C bone chars obtained in absence of oxygen showed greater porosity, surface area, and citric acid-soluble P than steamed or calcined samples at 800 °C. Although extractable phosphate in water and neutral-ammonium-citrate showed trends comparable to those from citric acid, it was negligible for all heated materials. Since it is possible to produce bone chars with different chemical, physical and crystallographic properties by managing pyrolysis conditions, bone chars can be designed to increase their suitability as P fertilizers for different purposes, such as high solubility or slow P release. 653 $aBone ash 653 $aBone treatment 653 $aSXRD 653 $aSynchrotron 653 $aXANES 700 1 $aHESTERBERG, D. 700 1 $aMURAOKA, T. 700 1 $aNOVOTNY, E. H. 773 $tWaste Management$gv. 131, p. 249-257, Jul. 2021.
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Embrapa Solos (CNPS) |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
18/01/2017 |
Data da última atualização: |
24/02/2017 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
SOUZA, E. de A.; COELHO, L. F. D.; SIMEONE, M. L. F. |
Afiliação: |
EDISLANE DE ARAUJO SOUZA, UFSJ,Campus de Sete Lagoas, MG.; LETICIA FERNANDES DIAS COELHO, UFSJ, Campus de Sete Lagoas, MG.; MARIA LUCIA FERREIRA SIMEONE, CNPMS. |
Título: |
Uso da espectroscopia no infravermelho próximo para avaliar os teores de proteína e óleo em milho. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA PIBIC/CNPq, 11., 2016, Sete Lagoas. [Trabalhos apresentados]. Sete Lagoas: Embrapa Milho e Sorgo, 2016. |
Idioma: |
Português |
Palavras-Chave: |
Calibração multivariada. |
Thesagro: |
Análise de laboratório. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/153589/1/Uso-espectroscopia.pdf
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Marc: |
LEADER 00606nam a2200145 a 4500 001 2061087 005 2017-02-24 008 2016 bl uuuu u00u1 u #d 100 1 $aSOUZA, E. de A. 245 $aUso da espectroscopia no infravermelho próximo para avaliar os teores de proteína e óleo em milho.$h[electronic resource] 260 $aIn: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA PIBIC/CNPq, 11., 2016, Sete Lagoas. [Trabalhos apresentados]. Sete Lagoas: Embrapa Milho e Sorgo$c2016 650 $aAnálise de laboratório 653 $aCalibração multivariada 700 1 $aCOELHO, L. F. D. 700 1 $aSIMEONE, M. L. F.
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