Papers by elias jigar sisay
Journal of Engineering Science and Technology Review, 2021
Membrane separation processes for wastewater treatment in dairy industry gives so many benefits s... more Membrane separation processes for wastewater treatment in dairy industry gives so many benefits such as less ecological footprint, reliable contaminant removal, low cost, possibility of renewable energy use, simple technology and can easily integrate with other processes. However, the fouling issue limits its widespread application. Self-cleaning membrane technology, through membrane modification by heterogeneous photo-catalytic nanomaterials and their composites, has been given more attention by many researchers. In this paper, characteristics of dairy wastewater and possible membrane separation processes applications in dairy wastewater treatment are summarised and discussed. Fouling mechanisms of protein, the interaction of molecules, factors affecting fouling are highlighted. Physical, chemical, and self-cleaning fouling control and mitigation strategies are reviewed. Membrane modifications by renewable or non-renewable energy-driven heterogeneous photo-catalysis and possible ways that enhance the photocatalytic efficiency are also addressed. Finally, challenges and prospective solutions are reviewed.
Leachate from Municipal Solid Waste (MSW) landfill has long known to be an environmental concern ... more Leachate from Municipal Solid Waste (MSW) landfill has long known to be an environmental concern worldwide. The composition of landfill leachate may contain metals, ammonia, organics, other toxicants and carcinogens, having major environmental concern, with implications for plant, animal and human health. The pollution of soil, surface and ground water is also some of the major immediate concern related to leachate. This problem is growing at alarming rate in some of the developing countries including Ethiopia, and Adigrat happens to one such fast growing small city Ethiopia. However, in the absence of any significant relevant study for Adigrat City MSW leachate, the present work was undertaken to study the physico-chemical characterization of leachate from the Adigrat MSW leachate and investigate its toxicity effect on pea seed germination (Pisum sativum). The characterization was performed on the leachate from Adigrat MSW landfill. Subsequently, the leachate toxicity assessment on...
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Papers by elias jigar sisay