Solid waste management program in developing countries: contingent valuation methodology versus choice experiment.

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Title: Solid waste management program in developing countries: contingent valuation methodology versus choice experiment.
Authors: Huynh, Xuan Thi Dan1 (AUTHOR), Khong, Tien Dung1 (AUTHOR) ktdung@ctu.edu.vn, Loch, Adam2 (AUTHOR), Khai, Huynh Viet1 (AUTHOR)
Source: Environment, Development & Sustainability. Nov2023, Vol. 25 Issue 11, p12395-12417. 23p.
Subject Terms: *Solid waste management, *Solid waste, *Waste management, Contingent valuation, Developing countries, Willingness to pay
Geographic Terms: Vietnam
Abstract: The willingness to pay by households in Vietnam to improve collection and processing services linked to source-separated municipal solid waste (MSW) is investigated in this research. This study contributes to the current literature by comparing welfare benefits derived from contingent valuation methodology and choice experiments for changes to waste service provision. The respondents were also stratified, for the first time, into households with/without previously sorted waste and across urbanization grades. Our results return broadly consistent willingness to pay estimates across the two methodologies and offers evidence that MSW sustainable management—a priority need in developing countries—may be addressed by positively enticing residents into a new fee-for-service program, but only where social benefits from such engagement are made clear. Interestingly, residents in lower urbanization grades, and those who have not previously sorted waste, reveal higher WTP values. Our results suggest that respondents are most interested in a wider selection of separated material options (i.e., recycled, organic and residual) as well as the potential for CO2 emission reductions associated with new waste management programs. We argue that the application of both stated preference techniques widens the set of policy input factors available to government officials and ensures useful evidence for structuring future engagement programs to address those who retain a preference for the status quo. [ABSTRACT FROM AUTHOR]
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Abstract:The willingness to pay by households in Vietnam to improve collection and processing services linked to source-separated municipal solid waste (MSW) is investigated in this research. This study contributes to the current literature by comparing welfare benefits derived from contingent valuation methodology and choice experiments for changes to waste service provision. The respondents were also stratified, for the first time, into households with/without previously sorted waste and across urbanization grades. Our results return broadly consistent willingness to pay estimates across the two methodologies and offers evidence that MSW sustainable management—a priority need in developing countries—may be addressed by positively enticing residents into a new fee-for-service program, but only where social benefits from such engagement are made clear. Interestingly, residents in lower urbanization grades, and those who have not previously sorted waste, reveal higher WTP values. Our results suggest that respondents are most interested in a wider selection of separated material options (i.e., recycled, organic and residual) as well as the potential for CO2 emission reductions associated with new waste management programs. We argue that the application of both stated preference techniques widens the set of policy input factors available to government officials and ensures useful evidence for structuring future engagement programs to address those who retain a preference for the status quo. [ABSTRACT FROM AUTHOR]
ISSN:1387585X
DOI:10.1007/s10668-022-02572-4