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High-Efficiency Recovery of Acetic Acid from Water Using Electroactive Gas-Stripping Membranes.
Im, Sungju; Jung, Bongyeon; Wang, Xinyi; Wu, Jishan; Xiao, Minhao; Chen, Xin; Quezada-Renteria, Javier A; Iddya, Arpita; Dlamini, Derrick; Lu, Sidan; Maravelias, Christos T; Ren, Zhiyong Jason; Hoek, Eric M V; Jassby, David.
Affiliation
  • Im S; Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States.
  • Jung B; Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States.
  • Wang X; Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States.
  • Wu J; Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States.
  • Xiao M; Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States.
  • Chen X; Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States.
  • Quezada-Renteria JA; Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States.
  • Iddya A; Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States.
  • Dlamini D; Department of Civil & Environmental Engineering, University of California, Los Angeles (UCLA), Los Angeles, California 90095, United States.
  • Lu S; Andlinger Center for Energy and Environment, Princeton University 86 Olden St, Princeton, New Jersey 08540, United States.
  • Maravelias CT; Department of Chemical and Biological Engineering, Princeton University 50-70 Olden St, Princeton, New Jersey 08540, United States.
  • Ren ZJ; Department of Civil and Environmental Engineering and The Andlinger Center for Energy and the Environment, Princeton University, Princeton, New Jersey 08544, United States.
  • Hoek EMV; Andlinger Center for Energy and Environment, Princeton University 86 Olden St, Princeton, New Jersey 08540, United States.
  • Jassby D; Department of Chemical and Biological Engineering, Princeton University 50-70 Olden St, Princeton, New Jersey 08540, United States.
Environ Sci Technol ; 57(27): 10096-10106, 2023 07 11.
Article in En | MEDLINE | ID: mdl-37368842
ABSTRACT
Recovery of carbon-based resources from waste is a critical need for achieving carbon neutrality and reducing fossil carbon extraction. We demonstrate a new approach for extracting volatile fatty acids (VFAs) using a multifunctional direct heated and pH swing membrane contactor. The membrane is a multilayer laminate composed of a carbon fiber (CF) bound to a hydrophobic membrane and sealed with a layer of polydimethylsiloxane (PDMS); this CF is used as a resistive heater to provide a thermal driving force for PDMS that, while a highly hydrophobic material, is known for its ability to rapidly pass gases, including water vapor. The transport mechanism for gas transport involves the diffusion of molecules through the free volume of the polymer matrix. CF coated with polyaniline (PANI) is used as an anode to induce an acidic pH swing at the interface between the membrane and water, which can protonate the VFA molecule. The innovative multilayer membrane used in this study has successfully demonstrated a highly efficient recovery of VFAs by simultaneously combining pH swing and joule heating. This novel technique has revealed a new concept in the field of VFA recovery, offering promising prospects for further advancements in this area. The energy consumption was 3.37 kWh/kg for acetic acid (AA), and an excellent separation factor of AA/water of 51.55 ± 2.11 was obtained with high AA fluxes of 51.00 ± 0.82 g.m-2hr-1. The interfacial electrochemical reactions enable the extraction of VFAs without the need for bulk temperature and pH modification.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Acetic Acid / Fatty Acids, Volatile Language: En Journal: Environ Sci Technol Year: 2023 Document type: Article Affiliation country:
Fulltext
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Acetic Acid / Fatty Acids, Volatile Language: En Journal: Environ Sci Technol Year: 2023 Document type: Article Affiliation country: