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Membrane distillation of wastewater: comparison of model and real organics.
Habib, Rasikh; Phuong Do, Mai; Asif, Muhammad Bilal; Jiang, Guangming; Sivakumar, Muttucumaru.
Afiliação
  • Habib R; School of Civil, Mining, Environmental and Architectural Engineering, Faculty of Engineering and Information Sciences, University of Wollongong, Wollongong NSW 2525, Australia E-mail: siva@uow.edu.au.
  • Phuong Do M; School of Civil, Mining, Environmental and Architectural Engineering, Faculty of Engineering and Information Sciences, University of Wollongong, Wollongong NSW 2525, Australia.
  • Asif MB; Advanced Membranes & Porous Materials Centre and KAUST Catalysis Centre, Physical Science & Engineering, King Abdullah University of Science and Technology, Thuwal 23955, Saudi Arabia.
  • Jiang G; School of Civil, Mining, Environmental and Architectural Engineering, Faculty of Engineering and Information Sciences, University of Wollongong, Wollongong NSW 2525, Australia.
  • Sivakumar M; School of Civil, Mining, Environmental and Architectural Engineering, Faculty of Engineering and Information Sciences, University of Wollongong, Wollongong NSW 2525, Australia.
Water Sci Technol ; 89(5): 1325-1339, 2024 Mar.
Article em En | MEDLINE | ID: mdl-38483501
ABSTRACT
Fouling behaviour in membrane distillation (MD) processes plays a crucial role in determining their widespread acceptability. Most studies have primarily focused on model organic foulants, such as humic acid (HA) and sodium alginate (SA). This study investigates the fouling of a polytetrafluoroethylene membrane in a direct contact MD (DCMD) using model organics (i.e., HA and SA) and real wastewater. The results indicated that the flux decline (5-60%) was only observed during the initial phase of the operation with model organic foulants. In contrast, real wastewater caused a gradual decline in flux throughout the experiment in both the concentrate (40%) and continuous (90%) modes. The study also found significant differences in the fouling layer morphology, composition, and hydrophobicity between the model organic foulants and real wastewater. Fourier transform infrared spectroscopy findings demonstrated that the fouling layer formed by real wastewater varied significantly from model organics, which primarily comprised of protein-like and polysaccharide-like functional groups. Finally, liquid chromatography-organic carbon detection revealed that the fouling layer of the MD membrane with real wastewater was composed of 40.7% hydrophobic and 59.3% hydrophilic organics. This study suggests that model organics may not accurately reflect real wastewater fouling.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Alginatos / Águas Residuárias Idioma: En Revista: Water Sci Technol Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Alginatos / Águas Residuárias Idioma: En Revista: Water Sci Technol Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2024 Tipo de documento: Article