Nov 2023
Abstract
Due to its high energy efficiency, membrane separation technologies have rapidly developed and been widely deployed in recent decades. Green materials have emerged as viable alternatives for membrane systems, offering sustainable and environmentally friendly options. Conventional membrane materials often rely on non-renewable resources and involve energy-intensive manufacturing processes. In contrast, green principles for membrane materials prioritize sustainability, resource efficiency, and reduced environmental impact. This dissertation examines the sustainable design of membrane materials, addressing the pressing need for environmentally conscious and resource-efficient solutions in membrane technology. In this thesis I explore the feasibility of repurposing face mask waste as raw material for nanofiltration membranes, employing environmentally friendly solvents, such as p-cymene and ethanol with a particular emphasis on their antipathogenic properties. Green interpenetrating polymer networks (IPNs) are developed using agarose and natural rubber latex and applied in nanofiltration under harsh conditions, i.e. organic solvents. These membrane materials can replace conventional membranes in organic solvent nanofiltration processes. Finally, surface engineered self-growing Pleurotus ostreatus mycelium materials are fabricated and applied for oil–water separation. The resulting mycelium-based membranes undergo extensive characterization and evaluation, considering their filtration performance, and environmental impact. The study aims to demonstrate the potential of mycelium materials as sustainable alternatives for oil-spill remediation. Overall, this research delves into the creation of greener alternative materials that achieve separation performance on par with traditional materials, while substantially mitigating their environmental footprint in alignment with Principles of Green Chemistry & Engineering and the United Nations Sustainable Development Goals. The study here presented explores feasible eco-conscious examples within the scope of sustainable polymeric materials, with a focus on identifying and advocating for sustainable methodologies and materials in both the production and application of advanced membrane technologies.