Economic evaluation of the comprehensive management of urban waste by creating material recovery facilities (Case study: West Zone of Tehran) with the conditional method
Subject Areas : soil pollutionmajid mehrabi 1 , Zahra Abedi 2 * , مسعود منوری 3 , هانیه نیکو مرام 4
1 - Ph.D. Student in Environmental Economics, Science and Research Branch, Islamic Azad University, Tehran, Iran.
2 - Assistant Professor, Department of Environmental Economics, Science and Research Branch, Islamic Azad University, Tehran, Iran. *(Corresponding Author)
3 - Assistant Professor, Department of Environmental Science, Science and Research Branch, Islamic Azad University, Tehran, Iran.
4 - Assistant Professor, Department of Environmental Economics, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Keywords: waste - recycling - economic valuation - environmental management - energy - onditional method,
Abstract :
Background and Objective: The excessive increase in population has caused the growth of cities and increased urbanization; Nowadays, more than 60% of the world's population lives in cities, and some urban planners and experts believe that this unprecedented growth of urbanization has led to a decrease in the stability and health of cities and has affected the quality of life of people in cities. In any case, the important issue is to organize the situation of garbage and waste in the metropolitan city of Tehran so that it does not cause a crisis and creates the least danger to the surrounding environment.
Material and Methodology: The main goal of this research is the economic analysis of the comprehensive management of municipal waste by creating material recovery facilities in the city of Tehran. Therefore, in general, the importance of this research can be summarized in such a way that this research can estimate the real economic and environmental value of the process of intermediate processing and recovery of materials at the source of urban waste in the western part of Tehran city and give an accurate picture of the importance provide the economy of this process.
Findings: In this research, with the help of the conditional valuation method and the creation of a hypothetical market and the willingness of the beneficiaries (citizens and municipalities) to pay and receive, the economic evaluation of the waste management complex is done, and the amount of damage to urban service stations is calculated and measured. Through the Cochran formula, the number of the statistical population of District 2, District 22 (the location of the urban service station) is determined and by providing a questionnaire and face-to-face interview, the value of WTP/WTA is estimated by considering the positive and negative side effects of the implementation of this project for the residents and the municipality.
Discussion and Conclusion: The findings of this research indicate that establishing material recovery facilities in the western district of Tehran is justifiable from both environmental and economic perspectives. Furthermore, residents of the area demonstrate a positive attitude and economic willingness towards improved waste management. Based on analyses conducted using the contingent valuation method, the average willingness to pay (WTP) of citizens for the improvement of environmental services, broken down by component, is as follows: 29,108 Tomans per month for reducing the costs of municipal services, 28,108 Tomans for eliminating leachate from waste, 28,206 Tomans for improving the urban landscape, and 28,553 Tomans for increasing the quantity and quality of recycled waste.
Additionally, the results of the econometric regression model revealed a positive and significant relationship between the examined components and the economic value perceived by citizens. The model’s coefficient of determination (R² = 0.90) indicates that approximately 90% of the variation in the dependent variable is explained by the independent variables. The F-statistic of 218.14 demonstrates the overall significance of the model at a 95% confidence level. As an example, the model results suggest that a 1% increase in recycling quality would lead to a 0.16% increase in the value of reduced municipal service costs.
In light of these results, it can be concluded that the citizens of the studied area place economic value on improving urban environmental conditions, and this can serve as a basis for future planning by municipalities and responsible organizations in the field of waste management. Therefore, it is recommended that relevant institutions utilize the data from this research to design and implement policies aimed at developing recycling infrastructure, attracting investors, and strengthening public participation, to facilitate the path towards sustainable urban development.
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