Detergent wastewater treatment using catalytic and non-catalytic ozone gas: Current updates and future directions

Title : Detergent wastewater treatment using catalytic and non-catalytic ozone gas: Current updates and future directions

Abstract:

Laundry detergent wastewater is a potential renewable resource that can be recycled and reused in order to mitigate water scarcity. The treatment of laundry detergent wastewater is very challenging because of its multicomponent composition, large discharge volumes to the environment resulting from increasing usage of detergent as the global population grows, and ineffectiveness of conventional treatment technologies. Ozonation as one of the most effective advanced oxidation processes (AOPs) has shown tremendous potential in the treatment and reclamation of laundry detergent wastewater. Complete mineralization of the water contaminants by molecular ozone is not economical due to the high ozone generation cost and other limitations such as pH dependence, short lifetime of ozone, low ozone solubility in aqueous solution and mass transfer limitations. Strategies such as modification of ozonation processes including combination with hydrogen peroxide (peroxone process) and catalytic ozonation have received much attention. The effectiveness of the ozonation process can be further enhanced by photocatalytic ozonation resulting in higher rate of pollutants mineralization. This presentation reviews the recent studies on ozonation treatment of surfactant containing laundry wastewater generated from various sources including domestic, industrial, commercial or public premises. Important remarks on the ozonation treatment of laundry detergent wastewater and suggestions for future applications of this technology will also be presented.
Keywords: Ozonation treatment, Advanced oxidation process (AOP), Detergent, Laundry wastewater, Surfactants
Acknowledgement: This research was supported by the Research Management Centre of Universiti Malaysia Sabah (Grant No. SDK0016-2017) and is gratefully acknowledged.

Biography:

Collin G. Joseph is a Professional Chemist and an Associate Professor in the Industrial Chemistry Program of Universiti Malaysia Sabah, which he joined as an academician in 2003. He obtained his PhD in Chemical Engineering from the University of Nottingham, UK in 2011 and to-date he has received several Excellence and Service awards as well as research and innovation Gold Medals in MTE, ITEX and PEREKA research competitions. He is an accomplished researcher and author in the field of Adsorbent Technology, Sonophotochemistry and Ozone Chemistry research. In 2014, he established the Sonophotochemistry Research Group and has served as the Head of Sonophotochemistry Research Group ever since. He served as the Head of the Industrial Chemistry Programme from 2020 -2023 at the Faculty of Science and Natural Resources, Universiti Malaysia Sabah. Due to his outstanding accomplishments in the field of Chemistry, he has been invited by many Tier 1 journals to serve as a reviewer under various publishers such as Elsevier B.V, Springer and Taylor & Francis. He is also frequently invited as a speaker and keynote speaker at international conferences and as research collaborators with local and international universities. He sits on the Editorial board of the Malaysian Journal of Chemistry (ISSN: 2550-1658), as a Review Editor on the Editorial Board of Photocatalysis (Frontiers of Chemistry (ISSN: 2296-2646)) and serves as a Guest Editor for Catalysts (ISSN 2073-4344). His current (22-11-2024) Google Scholar h-index is 20 with 2670 citations. Due to his outstanding contributions to the Malaysian Institute of Chemistry, he was awarded Fellowship of the Malaysian Institute of Chemistry (highest award) in 2021. He is also a member of the American Chemical Society and Majlis Profesor Negara. He serves as a volunteer and committee member (Life-time member) with MERCY Malaysia and the UMS4WDVC, carrying out various community-based services in contribution to the state and people of Sabah, Malaysia.