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Flocculation behavior and mechanism of bioflocculant produced by Aspergillus flavus.
Aljuboori, Ahmad H Rajab; Idris, Azni; Al-Joubory, Hamid Hussain Rijab; Uemura, Yoshimitsu; Ibn Abubakar, B S U.
Afiliación
  • Aljuboori AHR; Centre for Biofuel and Biochemical Research (CBBR), Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia.
  • Idris A; Department of Chemical and Environmental Engineering, Faculty of Engineering, University Putra Malaysia, Sri Serdang 43400, Selangor, Malaysia. Electronic address: azni@eng.upm.edu.my.
  • Al-Joubory HHR; Department of Soil Sciences and Water Resources, Collage of Agriculture, Baghdad University, Jadriyah, Baghdad, Iraq.
  • Uemura Y; Centre for Biofuel and Biochemical Research (CBBR), Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia.
  • Ibn Abubakar BSU; Department of Civil and Water Resources Engineering, University of Maiduguri, P.M.B 1069, Maiduguri, Borno State, Nigeria.
J Environ Manage ; 150: 466-471, 2015 Mar 01.
Article en En | MEDLINE | ID: mdl-25560664
In this study, the flocculation behavior and mechanism of a cation-independent bioflocculant IH-7 produced by Aspergillus flavus were investigated. Results showed 91.6% was the lowest flocculating rate recorded by IH-7 (0.5 mg L(-1)) at pH range 4-8. Moreover, IH-7 showed better flocculation performance than polyaluminum chloride (PAC) at a wide range of flocculant concentration (0.06-25 mg L(-1)), temperature (5-45 °C) and salinity (10-60% w/w). The current study found that cation addition did not significantly enhance the flocculating rate and IH-7 is a positively charged bioflocculant. These findings suggest that charge neutralization is the main flocculation mechanism of IH-7 bioflocculant. IH-7 was significantly used to flocculate different types of suspended solids such as activated carbons, kaolin clays, soil solids and yeast cells.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aspergillus flavus / Floculación / Caolín Límite: Humans Idioma: En Revista: J Environ Manage Año: 2015 Tipo del documento: Article País de afiliación: Malasia Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aspergillus flavus / Floculación / Caolín Límite: Humans Idioma: En Revista: J Environ Manage Año: 2015 Tipo del documento: Article País de afiliación: Malasia Pais de publicación: Reino Unido