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Pongsun Bunditsakulchai
Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, 254 Phayathai Road, Phathum Wan, Bangkok 10330, Thailand

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Journal article
Published: 11 August 2021 in Sustainability
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The crisis ignited by COVID-19 has transformed the volume and composition of waste generation and requires a dynamic response from policy makers. This study selected Bangkok as a case study to semi-quantitatively examine the impact of the COVID-19 outbreak on consumer-generated food and plastic waste by examining changes in lifestyles and consumption behaviour through a face-to-face questionnaire survey. Travel bans and diminished economic activity due to COVID-19 have led to a dramatic reduction in waste from the business sector and in the total amount of municipal waste generated. However, the results of the survey showed that both food and plastic waste generated by households in Bangkok increased during COVID-19. The shift from eating out to online food delivery services led to an increase in plastic bags, hot-and-cold food bags, plastic food containers, and food waste. Reasons for the increase in household food waste during COVID-19 varied, with respondents citing excessive amounts of food and unappetising taste, followed by exceeding the expiration date and rotting/foul odours. These reasons may be the result of the inability to predict quantity and quality when ordering online, and inadequate food planning and management by consumers. To achieve more effective food and plastic waste management, home delivery services, consumer food planning and management, and the formation of a circular economy based on localised supply chains may be considered as important intervention points.

ACS Style

Chen Liu; Pongsun Bunditsakulchai; Qiannan Zhuo. Impact of COVID-19 on Food and Plastic Waste Generated by Consumers in Bangkok. Sustainability 2021, 13, 8988 .

AMA Style

Chen Liu, Pongsun Bunditsakulchai, Qiannan Zhuo. Impact of COVID-19 on Food and Plastic Waste Generated by Consumers in Bangkok. Sustainability. 2021; 13 (16):8988.

Chicago/Turabian Style

Chen Liu; Pongsun Bunditsakulchai; Qiannan Zhuo. 2021. "Impact of COVID-19 on Food and Plastic Waste Generated by Consumers in Bangkok." Sustainability 13, no. 16: 8988.

Journal article
Published: 08 July 2021 in Sustainability
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Urban food waste issues in developing economies have recently attracted the attention of policymakers, practitioners, and academics in the course of implementing the Paris Agreement and the SDGs. In our case study city of Bangkok, Thailand, household food waste generation doubled from 2003 to 2018, with a similar increase in per capita amounts. Using an extensive literature review, statistical models, and a questionnaire survey, the authors clarified factors influencing food waste generation and separation before disposal, and reuse/recycling activity in urban households. Results showed that pre-purchase checks can not only prevent food waste but can also increase the reuse/recycling of food waste. Citizens with higher levels of education and those showing more concern about social issues and global warming are more likely to separate food waste before disposal and to participate in reuse/recycling activities. Finally, this paper proposes a seven-stage action-based model of integrated strategies for improving household food and food waste management to prevent/reduce food waste generation as well as remedy existing policy gaps in Bangkok.

ACS Style

Pongsun Bunditsakulchai; Chen Liu. Integrated Strategies for Household Food Waste Reduction in Bangkok. Sustainability 2021, 13, 7651 .

AMA Style

Pongsun Bunditsakulchai, Chen Liu. Integrated Strategies for Household Food Waste Reduction in Bangkok. Sustainability. 2021; 13 (14):7651.

Chicago/Turabian Style

Pongsun Bunditsakulchai; Chen Liu. 2021. "Integrated Strategies for Household Food Waste Reduction in Bangkok." Sustainability 13, no. 14: 7651.

Research article
Published: 01 January 2021 in Sustainability: Science, Practice and Policy
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Ensuring sustainable consumption and production (SCP) patterns is an important task for achieving Sustainable Development Goal 12 by 2030. To facilitate international and domestic collaboration toward regional SCP, we developed a collaborative workshop method to generate and structure ideas about consumption and production (CP) patterns and employed the procedures for emerging Southeast Asian countries at workshops in Japan and Thailand. The main focus was on Bangkok, and the goal was to identify the implications of SCP policies. The structuring of seventeen SCP patterns chosen from 525 CP patterns generated at the workshops helped to identify the important influential factors, policy interventions, and features of probable SCP patterns. The main conclusions were the following: (1) The viewpoints of consumers and providers are important for idea generation. The products and services, as well as the systems of CP patterns, should be targeted; (2) Transition, improvement of the quality of life, and digitalization are also key directions of SCP patterns in Bangkok; (3) Culture, infrastructure, and industry are major considerations for regional SCP policy; and (4) SCP policy instruments are broader than conventional environmental policy instruments, and expanding the scope of SCP policy should be discussed more widely, especially in Asian countries.

ACS Style

Tomohiro Tasaki; Yusuke Kishita; Eri Amasawa; Pongsun Bunditsakulchai; Jitti Mungkalasiri; Yasuhiko Hotta; Masahiko Hirao. Co-designing workshops on sustainable consumption and production in Southeast Asia: application of idea cards and structuring methods. Sustainability: Science, Practice and Policy 2021, 17, 242 -263.

AMA Style

Tomohiro Tasaki, Yusuke Kishita, Eri Amasawa, Pongsun Bunditsakulchai, Jitti Mungkalasiri, Yasuhiko Hotta, Masahiko Hirao. Co-designing workshops on sustainable consumption and production in Southeast Asia: application of idea cards and structuring methods. Sustainability: Science, Practice and Policy. 2021; 17 (1):242-263.

Chicago/Turabian Style

Tomohiro Tasaki; Yusuke Kishita; Eri Amasawa; Pongsun Bunditsakulchai; Jitti Mungkalasiri; Yasuhiko Hotta; Masahiko Hirao. 2021. "Co-designing workshops on sustainable consumption and production in Southeast Asia: application of idea cards and structuring methods." Sustainability: Science, Practice and Policy 17, no. 1: 242-263.