Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Environmental Lifecycle Assessment to Address the Hotspots in Natural Rubber Manufacturing; a Case Study with Information Gathered from Concentrated Latex Manufacturing in Sri Lanka

Version 1 : Received: 6 September 2023 / Approved: 7 September 2023 / Online: 7 September 2023 (11:43:49 CEST)

A peer-reviewed article of this Preprint also exists.

Dunuwila, P.; Rodrigo, V.H.L.; Daigo, I.; Goto, N. Unveiling the Environmental Impacts of Concentrated Latex Manufacturing in Sri Lanka through a Life Cycle Assessment. Resources 2024, 13, 5. Dunuwila, P.; Rodrigo, V.H.L.; Daigo, I.; Goto, N. Unveiling the Environmental Impacts of Concentrated Latex Manufacturing in Sri Lanka through a Life Cycle Assessment. Resources 2024, 13, 5.

Abstract

Sri Lanka is a top producer of premium quality concentrated latex (CL), which becomes a base material for dipped rubber products such as gloves and condoms. The processing of CL is resource-intensive, requiring significant amounts of energy, fuel, water, and chemicals. This process leads to various environmental issues such as wastewater pollution, malodor, and greenhouse gas emissions. Several environmental life cycle assessments (ELCA) have been conducted at international and local levels to address the aforesaid issues. However, ELCAs encapsulating different environmental impact areas on CL processing in Sri Lanka are absent. The study revealed that electricity usage was the main hotspot of the environmental burden, significantly impacting Abiotic depletion (fossil fuels), Global warming potential, Ozone layer depletion, Photochemical oxidation, and Acidification. Heavy reliance on coal in the Sri Lankan power grid was identified as the root of this trend. The study suggested two viable options to mitigate the environmental impact: installing inverters to centrifuge separators and solar systems in the factories. The second option was deemed more effective, reducing Acidification, Photochemical oxidation, and Global Warming Potential by approximately 37%, 36%, and 28%, respectively. Relevant officials may immediately consider these improvement options and collaborate to pave the way to a sustainable natural rubber industry.

Keywords

natural rubber; concentrated latex manufacturing; environmental impacts

Subject

Environmental and Earth Sciences, Pollution

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