Waste management is one of the major problems around the world. Governments and global organizations are starting to pay attention to the amount of waste left behind. Thai government drafted the National policies of waste management to manage waste in sustainable ways. Keudchang Sub-district confronts waste management problems due to the increase in the amount of waste, insufficient area for disposal, roadside and riverside litters, an illegal dump of rubbish in forests, and air pollution from waste incineration. The purposes of this research were to study the amount of waste and waste composition in 8 villages of Keudchang Community (KC), and develop appropriate guidelines of waste management. This participatory research collects data from both primary and secondary sources. Primary data sources include interviews and set up a public hearing stage with stakeholders in KC. Secondary data include a documentary of community context, meeting minutes, and other related documents. Qualitative data were analyzed with the content analysis method. The results showed that the KC produce an average of waste to 4,062.02 kg/day. These wastes could be classified into 4 types including organic waste (45.83%), recycle waste (28.01%), general waste (15.55%), and hazardous waste (10.60%) respectively. An individual person at KC produces an average of waste at 0.98 kg/day. Additionally, the results from conducting a public hearing stage of 8 villages revealed community awareness and solutions for waste management. All people in KC need to sort their wastes properly before disposal in 4 ways. First, organic waste. Each household needs to dig a hole and dump the organic wastes into it. The organic wastes should be managed and separated from other wastes. Second, recycle waste. Various approaches to recycle waste include waste credit bank (WCB), waste volunteer, monthly fee, and self-management. The WCB would be a hub for the communities to make profits and reduce landfill wastes. A waste volunteer would be a volunteer person who buys community wastes and sell them to outsiders. The monthly fee would be an approach where each household pays 70 baht/month to a garbage collector. Self-management would be another approach where households sort out, eliminate, sell, and manage wastes by themselves. Third, general waste. General waste could be divided into 2 groups as profitable waste and community dumping ground. Profitable waste could be sold to WCB or waste stores by each household. Community dumping ground would be an area allocated to all households for waste disposal. All households would not allow to throw garbage or wastes into other areas, but community dumping ground. Finally, hazardous waste. Hazardous waste would need to dispose of carefully in the trash can located at the office of the village headman. The findings from this study suggested setting up a waste management committee (WMC), as well as defining their roles and responsibilities. Local administrative organizations and community leaders also need to support, supervise, and control community waste management for resource-efficient and sustainable societies
The purposes of this research were to study the potential of a local community in producing organic crops and to develop patterns of green management. The instruments employed for data collection included field surveys, in-depth interviews, questionnaires, observations, focus group discussions and a community seminar at Mae-Rim District, Chiang Mai Province, Thailand. The results were that the community had the potential to produce organic plants, as it situates mostly on a flatland by the mountain, with fertile soil abundantly filled with minerals and nutrients. In terms of social dimension, people in the community had three sets of knowledge, namely, organic plantation management, economic community, and the new Theory of Sufficiency Economy. Integrating with their economic and marketing network, they consequently formulated the SALUANG Model which illustrates knowledge and experience sharing of all stakeholders in the agricultural management, transparency of the management that allows everyone to be aware of the original sources and all the process that meet quality and safety standards, integration of local wisdom with modern knowledge that emphasizes in environmentally friendly toxin-free agriculture and participatory resources conservation, understanding of customer needs, accessibility to the knowledge body by focusing at information exchange among members and with outsiders, establishment of a collaborative network comprising farmers who favor green agriculture, good governance, and well-being of the community.
Today, about 4.8–12.7 million tons of fossil-based plastics have reached the oceans. Thus, this pollution has become a matter of significant concern globally. Polyhydroxyalcanoates (PHAs) are one of the promising biodegradable plastics that could replace conventional petroleum-based plastics and subsequently mitigate oceanic pollution. High organic wastewater has been examined as a potential substrate for lowering the manufacturing cost of PHAs. This study has found that for a project lifetime of 20 years, the cost of the PHA manufacturing process reached $994,143. The annual process operation cost was $159,711. The payback period was 6.79 years, and the internal return rate was 16%. However, if costs increased by 20%, the benefits decreased by 25%. Since price of PHAs is higher than that of conventional plastic, various supports from the government could potentially push PHAs to the market. Statement of Novelty This study successfully determines the techno-economic analysis of the PHA production to form high-strength waste using MMC as the microbial source. The sensitivity analysis of the system was also performed.
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