Sustainable solutions for household waste management: Transforming UCO into soap in local communities

The improper disposal of Used Cooking Oil (UCO) poses significant environmental challenges, contributing to water contamination, clogged sewage systems, and soil degradation. In Kuala Muda, Kedah, a community heavily involved in culinary activities, UCO is often discarded in environmentally harmful ways due to a lack of structured waste management systems. Despite some awareness of the negative impacts, many community members lack practical knowledge and resources to recycle this waste effectively. The objective of this study is to evaluate the environmental impact of converting UCO into soap, specifically in terms of waste reduction and sustainability. The study focuses on community participation in sustainable waste management and examines key factors such as environmental awareness, perceived ease of participation, perceived benefits (environmental and economic), and social influence. A pre-test/post-test design was used, involving a baseline survey, soap-making training, and a follow-up survey six months after implementation. The data were analyzed using descriptive statistics, paired t-tests, and correlation analysis. Additionally, a waste audit was conducted before and after the intervention to assess the reduction in improper disposal of UCO. The results revealed a significant increase in community participation, with the mean score rising from 3.50 (pre-test) to 4.20 (post-test). The waste audit showed a 60% reduction in the volume of improperly disposed UCO, from 150 liters to 60 liters per month. Factors such as environmental awareness, perceived benefits, and social influence were found to be strong predictors of participation. In conclusion, the soap-making initiative not only reduced environmental waste but also improved community engagement in sustainable practices. The findings suggest that similar initiatives could be implemented in other communities to promote waste reduction and environmental sustainability. Future research could explore the scalability of this approach to different contexts and assess long-term sustainability impacts.