scholarly journals Long-term food waste management in Phnom Penh utilizing a system dynamics modeling approach

2020 ◽  
Vol 27 (1) ◽  
pp. 200603-0
Author(s):  
Thanwadee Chinda ◽  
Sireiratana Thay
Keyword(s):  
Waste Management ◽  
Food Waste ◽  
Waste To Energy ◽  
Food Wastes ◽  
Key Factors ◽  
Dynamics Model ◽  
Phnom Penh ◽  
Simulation Results ◽  
Term Management

Phnom Penh has a high number of people. With more people, it is expected that food waste issues will be severe. To properly manage food waste, it is necessary to identify the key factors affecting food waste management, and examine the interactions among those key factors to effectively plan for long-term management. This study develops a dynamics model of food waste management, considering vegetables as the main waste, to examine the trends of food waste in Phnom Penh and plan for long-term management. The developed dynamics model considers two types of waste, household and retailer wastes. The simulation results reveal that most food wastes are from households. They are mainly from preparation processes and inappropriate packing sizes. The results show that with a smaller percentage of waste in preparation processes, food wastes going to a landfill decrease. The use of smaller-size packs (250 g and 350 g) also helps to minimize food wastes. The simulation results also suggest the use of biodigesters, to convert food waste to energy and reduce landfill waste in the long term. Local communities, local authorities, and governments can use this study to plan for long-term food waste management, to reduce food waste and mitigate landfill problems.

Analysis of Socio-demographic Factors Influencing Households Participation in Sustainable Food Waste-management in Malaysia

2021 ◽  
Vol 47 (3) ◽  
pp. 488-498
Author(s):  
Innocent A. Jereme ◽  
Chamhuri Siwar ◽  
Rawshan Ara Begum ◽  
Basri Abdul Talib
Keyword(s):  
Waste Management ◽  
Food Waste ◽  
Sociodemographic Factors ◽  
Management Program ◽  
Primary Data ◽  
Food Wastes ◽  
Municipal Solid Wastes ◽  
Sustainable Food ◽  
Small Family Size ◽  
Socio Demographic Factors

Most local authorities in Malaysia spent as much as 60-70 percent of their annual budget to dispose food waste together with other municipal solid wastes to landfills. It is time for Malaysians to start reducing food waste through sustainable method, as it is becoming an uphill task to manage food wastes generated in Malaysia. When households reduce the amount of food waste generated in a sustainable way, it could help reduce cost, and other related bills for households, and as well in running their other daily activities. The main objective of this study is to assess how sociodemographic factors of households in Selangor and Terengganu influence their behaviour towards participation in sustainable food wastes management program. The study applied purposive nonrandom sampling consisting of 333 respondents, 257 were from Selangor and 76 from Terengganu. Primary data was collected through structured questionnaire. Descriptive and logistics regression model analysis were used to analyze the data. Findings have shown 48.7 percent of Terengganu respondents spent not more than RM100 on food per week, while Selangor had 41.2 percent within the same period who spent such amount. 35.4 percent of Selangor respondents spent between RM101-200 compared to Terengganu which spent same amount at 30.3 percent within the same periods. The survey shows 43.2 percent of Selangor households disposed 1-3kg food wastes, while Terengganu on the other hand had 51.3 percent who disposed same quantities of food wastes per week. Respondents with higher education, those on government jobs, small family size and ethnicity have significant impacts on the respondents' behaviour towards participation in sustainable food waste management program. Note: US$1=RM4.09

Current Status of the Radioactive Waste Management Programme in Spain

2007 ◽  
Author(s):  
Jorge Lang-Lenton Leo´n ◽  
Emilio Garcia Neri
Keyword(s):  
Radioactive Waste ◽  
Waste Management ◽  
Management Programme ◽  
Current Status ◽  
Spent Fuel ◽  
Radioactive Waste Management ◽  
Set Up ◽  
Intermediate Storage ◽  
Term Management

Since 1984, ENRESA is responsible of the radioactive waste management and the decommissioning of nuclear installations in Spain. The major recent challenge has been the approval of the Sixth General Radioactive Waste Plan (GRWP) as “master plan” of the activities to be performed by ENRESA. Regarding the LILW programme, the El Cabril LILW disposal facility will be described highlighting the most relevant events especially focused on optimizing the existing capacity and the start-up of a purpose–built disposal area for VLLW. Concerning the HLW programme, two aspects may be distinguished in the direct management of spent fuel: temporary storage and long-term management. In this regards, a major challenge has been the decision adopted by the Spanish Government to set up a Interministerial Committee for the establishment of the criteria that must be met by the site of the Centralized Intermediate Storage (CTS) facility as the first and necessary step for the process. Also the developments of the long-term management programme will be presented in the frame of the ENRESA’s R&D programme. Finally, in the field of decommissioning they will be presented the PIMIC project at the CIEMAT centre and the activities in course for the decommissioning of Jose´ Cabrera NPP.

The Potential Impact of Oil and Other Non-Aqueous Phase Liquids (NAPLs) on the Long-Term Management of Radioactive Wastes

2003 ◽  
Author(s):  
M. M. Askarieh ◽  
A. W. Harris ◽  
S. J. Wisbey
Keyword(s):  
Waste Management ◽  
Aqueous Phase ◽  
Organic Materials ◽  
Near Field ◽  
Radioactive Wastes ◽  
Assessment Tools ◽  
The United Kingdom ◽  
The Impact ◽  
Term Management

The presence of non-aqueous phase liquids (NAPLs) in radioactive wastes has the potential to adversely affect their long-term management. The buoyancy of light NAPLs can represent a separate pathway for their migration from a waste management facility, such as a deep repository, to the accessible environment. Their inherent toxicity and potential burden of radionuclides need to be addressed. Nirex is currently developing an understanding of the behaviour of NAPLs and exploring the means of mitigating any adverse impact. NAPLs such as oils and solvents are present in existing wastes, but NAPLs can also be generated by degradation of some solid organic materials, such as plastics. Wastes arising in the United Kingdom that may contain NAPLs include liquids and sludges contaminated with oils, and waste items containing trapped oil, for example gearboxes and pumps. The reference inventory being assessed by Nirex also contains significant quantities of organic materials which can be considered to be potential precursors to the generation of NAPLs. A programme of work has been instigated by Nirex to develop a better understanding of the behaviour of NAPLs. The programme includes the following aspects: understanding the mechanisms by which NAPLs might be produced and existing NAPLs degraded and destroyed: • consideration of the containment that could be offered by packaging of wastes containing NAPLs; • investigating the extent to which radionuclides may be entrained in NAPLs; • understanding the migration of NAPLs in the near-field and in geological systems; • the impact of NAPLs on the surface properties of repository backfill and the geosphere; • development of assessment tools to quantify the potential risk due to NAPLs. This paper will describe the scope of this programme of work, and will provide examples from the ongoing programme to demonstrate that suitable long-term waste management solutions can be developed for NAPL containing wastes.

Collier County, Florida: Consideration of Gasification as a Long-Term Waste Management Solution

2003 ◽  
Author(s):  
Stephen C. Schwarz ◽  
Daniel E. Dietch
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Evaluation Process ◽  
The United States ◽  
Management Program ◽  
Waste To Energy ◽  
Current Status ◽  
Collier County ◽  
Wide Range

Collier County, Florida (“County”) is in the midst of developing an integrated waste management program. Unlike many counties, Collier County owns a landfill with sufficient long-term landfill capacity to last another 15 years. However, due to the Board of County Commissioner’s (“Board”) desire to have a 50-year solution for solid waste, the County has set upon a course to divert waste from the landfill to the maximum extent possible. In doing so, the County solicited long-term waste management solutions from private companies capable of processing the majority of the municipal solid waste generated in the County. Over the past two years, the County has considered several of these alternatives ranging from MSW composting to mass-burn waste-to-energy; however, based on an evaluation of a wide range of impacts, gasification was selected as the preferred alternative. With this focus, the County issued a Request for Proposal (“RFP”) in November 2001 for a design, build, own, operate, and finance gasification project. The County received three proposals in April 2002 in response to the RFP. To date, the County has completed the proposal evaluation process and has ranked the top two responsive firms: Interstate Waste Technologies (“IWT”) and Brightstar Environmental (Florida), LLC (“Brightstar”) based on experience, technical approach, business arrangement, and cost. If implemented, this project will be the only commercial gasification project operating in the United States. This paper will provide insight into various stages of the project, from development through to the current status of the project, as well as the strategic policy, financial, and technical considerations that make this opportunity a good fit for the County. An emphasis will also be placed on comparing and contrasting the benefits and drawbacks of each technology, such as processing methodology, cost, redundancy, and scalability.

scholarly journals Energy Recover in Sweden: a Case Study

2020 ◽  
Vol 5 ◽  
pp. 1
Author(s):  
Marco Tsuyama
Keyword(s):  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Success Factors ◽  
Waste To Energy ◽  
Low Carbon ◽  
Key Factors ◽  
Low Carbon Economy ◽  
Greenhouse Gases Emissions

<p>Sweden has reached prominent figures both in waste management and reducing greenhouse gases emissions. Less than 1 percent of its municipal solid waste is landfilled, and the other 99 percent is harnessed by either recycling or producing energy. It helped the country’s decarbonization, as its GDP raised 75% while its emission decreased 26% during the period 1990-2016. This is why the Sweden is a benchmarking either regarding waste management and economy decarbonization. This paper had the objective to identify key success factors that could inspire better practices in regulation and public policies regarding the energy and material recovering from municipal solid waste. To accomplish the goal it was held nine incineration plants technical visits, as well 19 Sweden experts were interviewed. It was delivered a overview of the stage of excellence of Sweden regarding waste and energy policies and 12 success factors were outlined. The key factors can be reunited in four groups: (a) holistic policy approach regarding diverse public demands; (b) integration of recycling and energy recovery from waste; (c) use of economic instruments such as taxes and tariffs in order to discourage harmful and incentive positive practices; (d) municipality’s autonomy with economic and operational capacity. The key factors can also be useful lessons to decision and opinion makers of other countries to formulate strategies that can contribute to improve performance regarding proper waste destination and decarbonization of the economy.</p><p><strong>Key-words:</strong><strong> </strong>Waste Management, Decarbonization, Sweden, Energy Recovering, Waste-to-Energy, Low Carbon Economy.</p>

Port Hope Area Initiative

2003 ◽  
Author(s):  
Peter Brown ◽  
David McCauley
Keyword(s):  
Waste Management ◽  
Federal Government ◽  
Environmental Remediation ◽  
Local Community ◽  
Lessons Learned ◽  
Local Participation ◽  
History Of ◽  
The Government ◽  
Term Management

The Port Hope Area Initiative involves a process that will lead to the cleanup of low-level radioactive wastes in two communities in Southern Ontario and the construction of three new long-term waste management facilities in those communities. The history of the Initiative provides important insights into local participation and the successes and failures of siting efforts. The wastes resulted from the operations of an industrial process in Port Hope that began in the 1930s. Initially, wastes (contaminated with radium, uranium, and arsenic) from radium processing were deposited in a relatively uncontrolled manner at various locations within the town. By the 1940s, uranium processing wastes were deposited at nearby purpose-built radioactive waste management facilities. The problem of contamination was first recognized in 1974 and the worst cases quickly cleaned up. However, large volumes of contamination remained in the community. There were three successive efforts to develop an approach to deal with the area’s contamination. In the early to mid 1980s, a standard approach was employed; i.e. indentifying the most technically appropriate local site for a disposal facility, proceeding to evaluate that site, and communicating the benefits of the chosen approach to the local community. That approach was resoundingly rejected by local citizens and government representatives. The second effort, an innovative and consultative voluntary siting effort carried out during the late-1980s and early to mid-1990s involved the solicitation of other municipalities to volunteer to host a facility for the disposal of the Port Hope areas wastes. That effort resulted in the identification of a single volunteer community. However, negotiations between the federal government and the municipality were unable to reach an acceptable agreement establishing the conditions for the community to host the waste management facility. The third effort, a community-driven approach, was undertaken in the late-1990s and resulted in an agreement in 2001 between the Government of Canada and the local communities that sets in motion a process for the cleanup of the local wastes and long-term management in new local waste management facilities. This paper provides insights into the history of the problem, the efforts of the federal government over the last two decades to deal with the issue, how local participation and decision-making processes affected the successes of the various siting approaches, and lessons learned that might be of interest to others who must deal with environmental remediation situations that involve siting long-term management facilities.

Long-Term Issues for Indefinite Surface Storage of Intermediate and Some Low Level Radioactive Waste in the UK

2003 ◽  
Author(s):  
Samantha King
Keyword(s):  
Radioactive Waste ◽  
Waste Management ◽  
Radioactive Wastes ◽  
Management Option ◽  
Radioactive Waste Management ◽  
Scoping Study ◽  
Low Level ◽  
The Uk ◽  
Term Management

Nirex is the organisation responsible for long-term radioactive waste management in the UK. Our mission is to provide the UK with safe, environmentally sound and publicly acceptable options for the long-term management of radioactive materials. Nirex is therefore researching various options for the long-term management of radioactive wastes/materials in order to identify the relevant issues with regard to the feasibility of options, and the research, development and stakeholder dialogue necessary to address these issues. The UK policy for the long-term management of solid radioactive waste is currently undergoing review. In September 2001, the UK Government Department for Environment, Food and Rural Affairs (Defra) and the Devolved Administrations for Scotland, Wales and Northern Ireland launched a public consultation on ‘Managing Radioactive Waste Safely’ (MRWS) [1]. The aim of this consultation was to start a process that will ultimately lead to the implementation of a publicly acceptable radioactive waste management policy. The MRWS programme of action proposed by Government includes a “stakeholder” programme of public debate backed by research to examine the different radioactive waste management options, and to recommend the preferred option, or combination of options. The options of storage above ground and underground are expected to be among the options examined. In the UK, radioactive wastes are currently held in surface stores, at over 30 locations in the UK, pending a decision on their long-term management. These stores were originally designed to have lifetimes of up to 50 years, but due to uncertainty regarding the longer term management of such wastes, extending the life of stores to 100 years is now being considered. This paper describes a preliminary scoping study to identify the long-term issues associated with surface storage of intermediate-level radioactive waste (ILW), and certain low-level waste (LLW) indefinitely in the UK. These wastes contain radionuclides with half lives that can range up to a million years or more, it was therefore assumed, for the purposes of this scoping study, that wastes would need to be managed over a period of at least one million years. An indefinite surface storage concept will require institutional stability and encompasses the principle of guardianship. It is based on a rolling present where each generation is required to monitor and, as necessary, repackage the waste and refurbish/replace storage buildings over a period of at least one million years. Each generation will also need to decide whether to continue with surface storage or implement another long-term management option. The aims of the scoping study were to: i) Investigate the implications of indefinite surface storage of waste packages through consideration of the facility specification, design and assessment. This framework is common to all Nirex radioactive waste management option studies, and provides a common basis for comparison. ii) Identify the social and ethical issues related to indefinite storage, including the principles and values that some stakeholders believe are met by the surface storage option.

scholarly journals Are Students Really Cautious about Food Waste? Korean Students’ Perception and Understanding of Food Waste

Foods ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 410 ◽  
Author(s):  
Maidul Islam
Keyword(s):  
Food Waste ◽  
Environmental Problem ◽  
The Other ◽  
Shopping Behavior ◽  
Purchase Behavior ◽  
Food Wastes ◽  
Korean Students ◽  
Additional Information ◽  
Educational Campaigns

The amount of food wasted by Korean households is significant and to some extent could be preventable. It is not well illustrated how Korean students perceive food waste and how much they know about the consequences of food waste. This study aimed to examine Korean students’ perception of food waste. Overall, results show that students’ perception of food waste varies in different clusters. Considerate food wasters (cluster 1) are knowledgeable and have much information regarding food waste. This paper suggests that additional information about how to preserve food and about issues related to food wastes, which cause a bigger environmental problem over the long term, could influence the behavior of this cluster, reducing perhaps further food waste. On the other hand, unwitting and ruthless food wasters, who are in clusters 2 and 3, need extra attention. Marketers should initiate educational campaigns to raise awareness of food waste for students and youth. Students who fall under these two clusters may need to pay extra attention to their shopping behavior. They should be more connected to their food, and to their purchase behavior, which may reduce food waste.

scholarly journals Food Waste to Energy: An Overview of Sustainable Approaches for Food Waste Management and Nutrient Recycling

2017 ◽  
Vol 2017 ◽  
pp. 1-19 ◽  
Author(s):  
Kunwar Paritosh ◽  
Sandeep K. Kushwaha ◽  
Monika Yadav ◽  
Nidhi Pareek ◽  
Aakash Chawade ◽  
...  
Keyword(s):  
Waste Management ◽  
Food Waste ◽  
Management Practices ◽  
Nutrient Recycling ◽  
Waste To Energy ◽  
World Population ◽  
Continuous Increase ◽  
Societal Benefits ◽  
Standard Management ◽  
Computational Resources

Food wastage and its accumulation are becoming a critical problem around the globe due to continuous increase of the world population. The exponential growth in food waste is imposing serious threats to our society like environmental pollution, health risk, and scarcity of dumping land. There is an urgent need to take appropriate measures to reduce food waste burden by adopting standard management practices. Currently, various kinds of approaches are investigated in waste food processing and management for societal benefits and applications. Anaerobic digestion approach has appeared as one of the most ecofriendly and promising solutions for food wastes management, energy, and nutrient production, which can contribute to world’s ever-increasing energy requirements. Here, we have briefly described and explored the different aspects of anaerobic biodegrading approaches for food waste, effects of cosubstrates, effect of environmental factors, contribution of microbial population, and available computational resources for food waste management researches.

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