Data/hora: 01/06/2024 07:45:54

Biblioteca(s): | Embrapa Solos.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 1
Data corrente: | 11/02/2014
Data da última atualização: | 10/11/2021
Autoria: | WNETRZAK, R.; LEAHY, J. J.; CHOJNACKA, K. W.; SAEID, A.; NOVOTNY, E.; JENSEN, L. S.; KWAPINSKI, W.
Afiliação: | RENATA WNETRZAK, University of Limerick; J. J. LEAHY, University of Limerick; KATARZYNA W. CHOJNACKA, Wroclaw University of Technology; AGNIESZKA SAEID, Wroclaw University of Technology; ETELVINO HENRIQUE NOVOTNY, CNPS; LARS STOUMANN JENSEN, University of Copenhagen; WITOLD KWAPINSKI, University of Limerick.
Título: | Influence of pig manure biochar mineral content on Cr(III) sorption capacity.
Ano de publicação: | 2014
Fonte/Imprenta: | Journal of Chemical Technology and Biotechnology, v. 89, n. 4, p. 569-578, Apr. 2014.
DOI: | https://doi.org/10.1002/jctb.4159
Idioma: | Inglês
Conteúdo: | Abstract: BACKGROUND: The adsorption of Cr(III) ions on various pig manure biochar (BC) samples was investigated to determine the effect of operating conditions (initial pH, sorbate and sorbent concentrations) on sorptive capacity. The BC samples with higher sorption capacity showed high surface area and were rich in alkalinemetals whose concentration wasmeasured by ICP-OES. RESULTS: For BCs from anaerobically and chemically pretreated feedstock greaterpH changes and highermaximum capacity were noted during Cr(III) adsorption than for BC frommechanically pretreated samples, due to a higher ion exchange capacity. Themaximum Cr(III) uptake of 102 mg g-1 for the BC sample was achieved at c0 =300 mg dm-3 and pH=5. It was also observed that the high ash content effectively lowered the surface area of BCs; however all BCs investigated contained a low level of toxic metals. CONCLUSIONS: The data indicate that both the technology used for separation of the manure and pyrolysis temperature had a significant influence on the physical and chemical properties of the BC and affected its sorption capacity. In addition, compared with other sorbents pig manure BC has one of the best Cr(III) sorption capacities.
Palavras-Chave: | Dejetos suínos; Pirólise.
Thesagro: | Separação; Sorção.
Thesaurus Nal: | biochar.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Solos (CNPS)
Exemplares: | CNPS - (17941-1) - UPC - AP - DD -  -  - 2014.00065 - DIS