open access publication

Article, 2024

Novel membrane coating methods involving use of graphene oxide and polyelectrolytes for development of sustainable energy production: Pressure Retarded Osmosis (PRO) and Enzymatic Membrane Reactor (EMR)

Chemical Engineering Research and Design, ISSN 1744-3563, 0263-8762, Volume 204, Pages 418-426, 10.1016/j.cherd.2024.02.051

Contributors

Su, Ziran 0000-0002-7292-2579 [1] Malankowska, Magdalena 0000-0001-9595-0831 (Corresponding author) [1] Brigsted, Jonas Sterup [1] Popkov, Andrei 0000-0002-5912-5575 [1] Guo, Haofei [2] Pedersen, Lars Storm [2] Pinelo, Manuel 0000-0002-3944-6144 (Corresponding author) [1]

Affiliations

  1. [1] Technical University of Denmark
    2. [NORA names: DTU Technical University of Denmark; University; Denmark; Europe, EU; Nordic; OECD];
  2. [2] SaltPower, Østager 2, Søndeborg DK-6400, Denmark
    3. [NORA names: Denmark; Europe, EU; Nordic; OECD]

Abstract

This study compares pressure retarded osmosis (PRO) and the enzymatic membrane reactor (EMR) for the production of green energy in the form of power density and biomethanol, respectively. A systematic design of the biocatalytic membrane reactor and the PRO membrane system was carried out where we combined physical adsorption of polyelectrolyte (PE) and the graphene oxide (GO) layer-by-layer (LbL) assembly system. The hybrid LbL structure is proposed as a strategy to simultaneously advance the operational stability of the enzymes in the EMR and to increase hydrophilicity and power density in the PRO approach. Using polydopamine (PDA), poly(diallyldimethylammonium chloride) (PDADMAC) and GO allowed functionalization of polysulfone (PSF) membranes for subsequent Alcohol Dehydrogenase (ADH) immobilization in the EMR and functionalization of polyamide (PA) membranes for PRO. Tailoring membrane surface chemistry allowed an increase in enzyme conversion rate in comparison to the pristine, unmodified membrane (99.6% vs 2%, respectively) without significantly compromising water permeability. Moreover, power density increased from 2.10 to 2.64 W/m2 for pristine and modified membrane, respectively. Energy production in kJ/m2·h was compared and the most efficient technology was chosen.

Keywords

LbL, LbL structure, Pressure retarded osmosis, adsorption, alcohol, alcohol dehydrogenase, approach, assembly, assembly system, biocatalytic membrane reactor, biomethanol, chemistry, chloride, coating method, comparison, conversion rate, dehydrogenase, density, design, development, development of sustainable energy production, efficient technology, energy, energy production, enzymatic membrane reactor, enzyme, function, graphene, graphene oxide, green energy, hybrid, hydrophilicity, immobilization, increase, increased hydrophilicity, membrane, membrane reactor, membrane surface chemistry, membrane system, method, modified membranes, operational stability, osmosis, oxidation, permeability, physical adsorption, poly(diallyldimethylammonium chloride, polydopamine, polyelectrolyte, polysulfone, power, power density, pressure, production, production of green energy, rate, reactor, stability, structure, study, surface chemistry, sustainable energy production, system, systematic design, technology, unmodified membrane, water, water permeability

Funders

  • Innovation Fund Denmark

Data Provider: Digital Science

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