Idioma:

Use of Ponkan mandarin peels as biosorbent for toxic metals uptake from aqueous solutions

Pavan, Flávio A. ; Lima, Ilauro S. ; Lima, Éder C. ; Airoldi, Claudio ; Gushikem, Yoshitaka

Journal of hazardous materials, 2006-09, Vol.137 (1), p.527-533 [Periódico revisado por pares]

Amsterdam: Elsevier B.V

Texto completo disponível

Citações Citado por

Enviar para

Título:
Use of Ponkan mandarin peels as biosorbent for toxic metals uptake from aqueous solutions
Autor: Pavan, Flávio A. ; Lima, Ilauro S. ; Lima, Éder C. ; Airoldi, Claudio ; Gushikem, Yoshitaka
Assuntos: Adsorption ; Applied sciences ; Aqueous solutions ; Batch ; Biosorbent ; Chemical engineering ; Citrus ; Citrus reticulata ; Cobalt - chemistry ; Copper - chemistry ; Dynamic adsorption procedures ; Exact sciences and technology ; Glass ; Hydrogen-Ion Concentration ; Kinetics ; Metals, Heavy - analysis ; Metals, Heavy - toxicity ; Models, Chemical ; Nickel - chemistry ; Pollution ; Ponkan mandarin peel ; Spectroscopy, Fourier Transform Infrared ; Toxic metals ; Waste Disposal, Fluid - methods ; Water - chemistry ; Water Pollutants ; Water Purification - methods
É parte de: Journal of hazardous materials, 2006-09, Vol.137 (1), p.527-533
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ObjectType-Article-1
ObjectType-Feature-2
Descrição: Waste Ponkan mandarin (Citrus reticulata) peel was used as biosorbent to extract Ni(II), Co(II) and Cu(II) from aqueous solutions at room temperature. To achieve the best adsorption conditions the influence of pH and contact time were investigated. The isotherms of adsorption were fitted to the Langmuir equation. Based on the capacity of adsorption of the natural biosorbent to interact with the metallic ions, the following results were obtained 1.92, 1.37 and 1.31mmolg−1 for Ni(II), Co(II) and Cu(II), respectively, reflecting a maximum adsorption order of Ni(II)>Co(II)>Cu(II). The quick adsorption process reached the equilibrium before 5, 10 and 15min for Ni(II), Co(II) and Cu(II), respectively, with maximum adsorptions at pH 4.8. In order to evaluate the Ponkan mandarin peel a biosorbent in dynamic system, a glass column was fulfilled with 1.00g of this natural adsorbent, and it was feed with 5.00×10−4moll−1 of Ni(II) or Co(II) or Cu(II) at pH 4.8 and 3.5mlmin−1. The lower breakpoints (BP1) were attained at concentrations of effluent of the column attained the maximum limit allowed of these elements in waters (>0.1mgl−1) which were: 110, 100 and 130 bed volumes (Veffluent/Vadsorbent), for Ni(II), Co(II) and Cu(II), respectively. The higher breakpoints (BP2) were attained when the complete saturation of the natural adsorbent occurred, and the values obtained were: 740, 540 and 520 bed volumes for Ni(II), Co(II) and Cu(II), respectively.
Editor: Amsterdam: Elsevier B.V
Idioma: Inglês

Links

Voltar para lista de resultados

Anterior Resultado 4 Avançar Ir para próxima página

Realização: Logos de Redes Sociais:

Use of Ponkan mandarin peels as biosorbent for toxic metals uptake from aqueous solutions

Pavan, Flávio A. ; Lima, Ilauro S. ; Lima, Éder C. ; Airoldi, Claudio ; Gushikem, Yoshitaka

Amsterdam: Elsevier B.V

Buscando em bases de dados remotas. Favor aguardar.