Li, Liang. The electronic waste management systems : a comparison of the e-waste management policies, processes and practices among selected countries in the Greater Mekong Subregion. Doctoral Degree(Engineering and Technology). Thammasat University. Thammasat University Library. : Thammasat University, 2015.
The electronic waste management systems : a comparison of the e-waste management policies, processes and practices among selected countries in the Greater Mekong Subregion
Abstract:
Waste electrical and electronic equipment or e-waste is one of the fast growing wastes in
the solid waste stream in urban environment worldwide. It has become a widely
recognized social- and environmental-problem; therefore, proper management of ewaste
is vital to protecting the fragile environment from its improper disposal. This
study employed a set of quantitative criteria to analyze policies, processes and practices
of the respective e-waste management systems adopted in China, Laos and Thailand.
Questionnaire surveys of electrical and electronic equipment retailers and consumers
were conducted to determine current status of the policy, process and practice of the ewaste
management and the knowledge of environmental impacts of e-waste disposal as
it relates to mobile phones in these three countries. Results of the survey showed that
there were no significant differences in the levels of respondents' satisfaction toward the
take-back systems adopted by manufacturers (S202) (F=2.702, p>0.05). However,
significant differences were observed in the levels of respondents' satisfaction toward
manufacturers using recyclable or reusable materials (S201) (F=3.459, p<0.05) and
toward the incentives provided to retailers and consumers to practice reuse and recycle
of e-waste (S203) (F=6.394, p<0.01) among the three countries surveyed. A total of 5, 3 analyzed and their weighted averages were calculated. The results showed that for P1
average and P3 average, Laos was the highest among the three countries, followed by
Thailand and China. For P2 average, however, China was the highest and then followed by
Laos and Thailand. Results of P1 average, P2 average and P3 average were factored into an
equation to obtain a sum of the weighted averages (Ptotal) for each of the three countries,
which showed that China had the highest score of Ptotal (0.141) among the three
countries, followed by Laos (0.132) and Thailand (0.121). The survey results also
revealed that gender was positively correlated with respondents knowledge of the status
of environmental conditions (P104) (r=0.077, n=1994, p<0.01) and negatively correlated
with their knowledge of how to improve environmental conditions (P105) (r=-0.067,
n=2037, p<0.01). The results further demonstrated that the increase in age was
positively correlated with respondents concern over environmental conditions (P103)
and P105. Similarly, the increase in respondents educational level was positively
correlated with P105. However, the increase in respondents income was negatively
correlated with P104. Therefore, an effort to bridge the knowledge gaps through initiating
proper educational programs in the three countries was necessary. This, coupled with
strong enforcement of e-waste related laws, would be the most reliable way to prevent
deterioration of the environment in a country. This PPP approach could be a useful tool
to decision makers for quantitative analysis and weighing of complex issues associating
with e-waste management in a country before a sound decision is rendered. It could also
be useful for comparing e-waste management systems or other systems with multiple
variables adopted by different countries or entities. Based on the results of this study, a
comprehensive e-waste management system was proposed
and 6 variables relating to Policy (P1), Process (P2) and Practice (P3), respectively, were