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        Chemical Stability and Additive Leach Out in Polyethersulfone Membranes Blended with Dragon Blood Resin: An Investigative Study

        Ambarita Aulia Chintia,Mulyati Sri,Arahman Nasrul,Bilad Muhammad Roil,Gül Bahar Yavuztürk,Korkut Sevde,Koyuncu İsmail 한국화학공학회 2024 Korean Journal of Chemical Engineering Vol.41 No.4

        Dragon blood resin (DBR) has been reported as an eff ective bio-based additive for polymeric membrane fabrication. It improves permeability and antifouling properties, but its weak chemical bond makes it susceptible to leaching. This study investigates the chemical stability and leaching behavior of polyethersulfone (PES) membranes modifi ed with DBR in an alkaline solution. The study involved immersing two types of PES-based membranes, one loaded with 3% DBR (M-3) during the fabrication and one without (M-0), in a 0.01-N NaOH solution for 5 days. The results show that M-0 had good resistance to high alkaline solutions, while M-3 was less stable. Pure water permeability and water contact angle increased with immersion time, with an average percentage increase of 90.74 and 19.48%, respectively. The leaching of DBR from the PES membrane could be attributed to its polarity and the breaking of the DBR bonds, causing them to break apart into smaller molecules. The leaching of DBR also leaves a void that increases the pore size. This report provides useful information for the optimal design of a bio-based PES membrane.

      • Co-electrolysis for power-to-methanol applications

        Andika, Riezqa,Nandiyanto, Asep Bayu Dani,Putra, Zulfan Adi,Bilad, Muhammad Roil,Kim, Young,Yun, Choa Mun,Lee, Moonyong Elsevier 2018 RENEWABLE & SUSTAINABLE ENERGY REVIEWS Vol.95 No.-

        <P><B>Abstract</B></P> <P>This article reviews the issues facing co-electrolysis and its applications to the power-to-methanol process. Co-electrolysis is an attractive process for syngas production that uses excess generated electricity. In extended applications, syngas produced from co-electrolysis can be used for various applications like methanol production. In this review, the power-to-methanol process is comprehensively discussed from a process systems engineering viewpoint. The subjects discussed include the reason to choose methanol as a final product, the latest progress in power-to-methanol projects, and a comparison of methanol production from H<SUB>2</SUB>-CO (from co-electrolysis) and H<SUB>2</SUB>-CO<SUB>2</SUB> mixtures (from electrolysis). Syngas production pathways from co-electrolysis and electrolysis are further investigated, and potential power-to-methanol schemes using co-electrolysis are deployed. Lastly, research directions are proposed to accelerate power-to-methanol commercialization.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Power-to-methanol (PtM) technology using co-electrolysis is intensively reviewed. </LI> <LI> The PtM technology regulates fluctuate power supply from renewable energy and consumer demand. </LI> <LI> Co-electrolysis applications for PtM process are comprehensively discussed. </LI> <LI> A comparison of methanol productions from co-electrolysis and from electrolysis is done. </LI> <LI> Start-up time and ramping flexibility are critical to commercialize the PtM process. </LI> </UL> </P>

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        Anaerobic membrane bioreactors for biohydrogen production: Recent developments, challenges and perspectives

        Aslam, Muhammad,Ahmad, Rizwan,Yasin, Muhammad,Khan, Asim Laeeq,Shahid, Muhammad Kashif,Hossain, Shakhawat,Khan, Zakir,Jamil, Farrukh,Rafiq, Sikander,Bilad, Muhammad Roil,Kim, Jeonghwan,Kumar, Gopalakr Elsevier 2018 Bioresource technology Vol.269 No.-

        <P><B>Abstract</B></P> <P>Biohydrogen as one of the most appealing energy vector for the future represents attractive avenue in alternative energy research. Recently, variety of biohydrogen production pathways has been suggested to improve the key features of the process. Nevertheless, researches are still needed to overcome remaining barriers to practical applications such as low yields and production rates. Considering practicality aspects, this review emphasized on anaerobic membrane bioreactors (AnMBRs) for biological hydrogen production. Recent advances and emerging issues associated with biohydrogen generation in AnMBR technology are critically discussed. Several techniques are highlighted that are aimed at overcoming these barriers. Moreover, environmental and economical potentials along with future research perspectives are addressed to drive biohydrogen technology towards practicality and economical-feasibility.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Anaerobic membrane bioreactor technology for biohydrogen production is overviewed. </LI> <LI> Enhancement of biohydrogen yield and generation rates via various strategies is discussed. </LI> <LI> Techno-economic and environmental impacts of this approach are addressed. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

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