Energy recovery from small-scale energy-from-waste (EfW) facility – Possible application in Hong Kong

2019 ◽  
Vol 26 (3) ◽  
pp. 97-104
Author(s):  
Cassie CHOW ◽  
Alex Wai Hung CHEUNG
Keyword(s):  
Hong Kong ◽  
Waste Management ◽  
Solid Waste ◽  
Energy Recovery ◽  
Solid Waste Management ◽  
Small Scale ◽  
Msw Management ◽  
Direct Combustion ◽  
Challenges And Opportunities ◽  
Waste Diversion

Solid waste management system is becoming a significant environmental, economic and technological challenge due to the increasing population and different waste stream. Municipal solid waste (MSW) is easy to generate but difficult to venerate. The question of whether MSW is an undervalued resource or an environmental burden is in continual debate. This paper presents an overview and structure of the current MSW management in Hong Kong and the advantages of waste diversion when the waste that normally would be delivered to the landfill is removed from the MSW. This paper also studies the technology of energy recovery which can be achieved from MSW in direct combustion as a fuel to produce power and heat, or indirectly, through waste conversion to fuel or fuel in a state of storage for future use. The necessity, rationale and application of energy recovery facilities are discussed to meet public health and environmental concerns and the public’s desire and willingness to reuse and recycle waste materials. Solid waste management serves both resource recovery and waste disposal in the public’s future challenges and opportunities for change.

scholarly journals Solid Waste Management in the Context of a Circular Economy in the MENA Region

2022 ◽  
Vol 14 (1) ◽  
pp. 480
Author(s):  
Safwat Hemidat ◽  
Ouafa Achouri ◽  
Loubna El Fels ◽  
Sherien Elagroudy ◽  
Mohamed Hafidi ◽  
...  
Keyword(s):  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Circular Economy ◽  
Energy Recovery ◽  
Solid Waste Management ◽  
Municipal Solid Waste Management ◽  
Mena Region ◽  
Economy Model ◽  
Msw Management

Solid waste management in most MENA countries is characterized by lack of planning, improper disposal, inadequate collection services, inappropriate technologies that suit the local conditions and technical requirements, and insufficient funding. Therefore, waste management is mainly limited to collection, transportation, and disposal. As the circular economy has recently been given high priority on the MENA region’s political agenda, all MENA member states are seeking to move away from old-fashioned waste disposal, “waste management”, towards a more intelligent waste treatment, “resource efficiency”. This paper presents a comprehensive overview of national systems for municipal solid waste (MSW) management, and material and energy recovery as an important aspect thereof, in the context of the circular economy in selected countries in the MENA region. Since policy, regulation, and treatment technologies are traditionally connected to MSW management, the focus of this article is twofold. Firstly, it aims to identify the different practices of solid waste management employed in selected MENA region countries and their approaches to embracing the circular economy and, secondly, it examines the extent to which policies and technologies applied play any role in this context. The study revealed that most waste management issues in the countries analyzed appear to be due to political factors and the decentralized nature of waste management with multi-level management and responsibilities. In fact, material and energy recovery in the context of municipal solid waste management does not differ significantly in the countries in the MENA region considered. In most cases, “waste” is still seen as “trouble” rather than a resource. Therefore, a fresh vision on how the solid waste management system can be transformed into a circular economy is required; there is a need for paradigm shift from a linear economy model to a circular-economy model.

scholarly journals Material flows analysis of plastic in Thailand

2018 ◽  
Vol 22 (6 Part A) ◽  
pp. 2379-2388 ◽  
Author(s):  
Chira Bureecam ◽  
Taweep Chaisomphob ◽  
Praj-Ya Sungsomboon
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Energy Recovery ◽  
Alternative Energy ◽  
Solid Waste Management ◽  
Plastic Material ◽  
Flow Analysis ◽  
Energy Development ◽  
Development Plan ◽  
Master Plan

A study of the plastics materials flow analysis in Thailand was aim to show the flow of plastic materials through production, consumption, and waste management based on the year 2013 and projection to the year 2020. This paper finds the plastic waste generation increasing steadily in line with population growth and increasing consumption. In addition, the simulation under waste management three scenarios includes the following: the business as usual, increasing recycled rate set on the National Solid Waste Management Master Plan (2016-2021) and increasing in rate of energy recovery by the Alternative Energy Development Plan 2015-2036. The plastic material flow analysis has shown that the implementation of the National Solid Waste Management Master Plan (2016-2021) or the Alternative Energy Development Plan 2015-2036 can reduce uncollected waste and improper waste disposal. Moreover, there is benefit by adding value from recycled materials and energy recovery.

Challenges and opportunities associated with municipal solid waste management

2021 ◽  
pp. 231-258
Author(s):  
Anudeep Nema ◽  
K. Mohammed Bin Zacharia ◽  
Aman Kumar ◽  
Ekta Singh ◽  
Vempalli Sudharsan Varma ◽  
...  
Keyword(s):  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Solid Waste Management ◽  
Municipal Solid Waste Management ◽  
Challenges And Opportunities

scholarly journals Characterisation, Recovery and Recycling Potential of Solid Waste in a University of a Developing Economy

2020 ◽  
Vol 12 (12) ◽  
pp. 5111
Author(s):  
Oluwatobi Owojori ◽  
Joshua N. Edokpayi ◽  
Ratshalingwa Mulaudzi ◽  
John O. Odiyo
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Solid Waste Management ◽  
Developed Countries ◽  
Developing Economy ◽  
Present Decade ◽  
Recycling Potential ◽  
Development Goals ◽  
Waste Diversion ◽  
The University

The present decade of Sustainable Development Goals has influenced higher educational institutions to assess and harness their great potential for waste diversion, recovery, and recycling. Institutional solid waste management in South Africa as a developing economy is yet to receive the required attention compared to developed countries. The measurement of the characteristics, and composition of solid waste is a fundamental pre-requisite towards creating a sustainable and viable process of solid waste management systems across institutions as this provides adequate and reliable information on the waste generated. This study aimed to determine the variations of waste components in the University of Venda (UNIVEN) by characterisation of the waste generated. Solid waste samples were collected from key activity areas and characterised using the ASTM D5321-92 method for unprocessed municipal solid waste. The recyclable, compostable, and non-recoverable components of the waste generated were found to be 61.7%, 34.4%, and 3.9%, respectively. The results of the waste audit revealed a strong potential for recycling in the institution (61.7%). This would decrease the amount of waste sent to landfills and enable the monetisation of the recyclable waste recovered from the waste stream, in this manner prompting a circular economy and a sustainable campus thereby lowering the waste footprint of higher education institutions.

scholarly journals Solid Waste Management on a Campus in a Developing Country: A Study of the Indian Institute of Technology Roorkee

Recycling ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 28 ◽  
Author(s):  
Nikhat Parvez ◽  
Avlokita Agrawal ◽  
Akhilesh Kumar
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Solid Waste Management ◽  
Developed Countries ◽  
Indian Institute ◽  
Zero Waste ◽  
Institute Of Technology ◽  
Waste Diversion ◽  
Feasible Solutions ◽  
The Developed Countries

The rates of waste generation in India have been increasing with increasing population and urbanization. Since higher education campuses are like mini autonomous cities, they can act as a model for solid waste management (SWM) and enhance sustainable development. SWM is the controlled generation, storage, collection, transport, processing, and disposal of solid waste considering public health, conservation, economics, and environmental conditions. A SWM program on campus will benefit the campus through reduced resource consumption and waste diversion. Developing countries like India are lacking behind in SWM from the developed countries which are using advanced technologies along with efficient management. This paper will analyze the issues related to SWM at IITR (Indian Institute of Technology Roorkee) campus and provide feasible solutions to be implemented at IITR campus for becoming zero waste campus. The SWM at the IITR campus is disorganized and incompetent. Lack of awareness and improper collection, imprecise segregation, exposed transportation, inefficient processing and disorganized disposal of solid waste are the major reasons for it. IITR has the potential to manage its waste properly through various techniques discussed in this paper. These would reduce the amount of waste diverted to landfills and the problems arising on campus due to solid waste, thus leading to a zero waste campus. Other campuses like IITR with similar context and issues can learn from this case study and work towards a zero-waste campus. This paper identifies a need to implement a robust SWM at the IITR campus in India.

scholarly journals Coordinative Urban-Rural Solid Waste Management: A Fractional Dual-Objective Programming Model for the Regional Munifcipality of Xiamen

2019 ◽  
Vol 2019 ◽  
pp. 1-13
Author(s):  
Aili Yang ◽  
Xiujuan Chen ◽  
Guohe Huang ◽  
Shan Zhao ◽  
Xiajing Lin ◽  
...  
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Solid Waste Management ◽  
System Efficiency ◽  
Model Framework ◽  
Management Planning ◽  
Environmental Objectives ◽  
Rural Solid Waste ◽  
Urban Rural ◽  
Waste Diversion

A linear fractional programming based solid waste management planning model was proposed and applied to support the planning of urban-rural solid waste management in Xiamen, China. The model could obtain the best system efficiency while solving the tradeoff between economic and environmental objectives. It aimed to effectively address the urban and rural solid waste management planning through minimizing the system cost and optimizing system efficiency in the developed model framework. Through the model, the optimal waste flow for each facility was obtained, and the problem of overburdened landfill in Xiamen’s urban and rural solid waste management system was solved. The solutions for waste allocation and facility capacity expansion were provided for Xiamen’s urban and rural solid waste management. The planning results showed that about 42.44 × 106 tons of waste would be diverted to other facilities from landfills over the planning period of 2018-2032, and the waste diversion rate would reach 97%, which would greatly reduce the burden on landfills. The economic efficiency of waste diversion would be 5.07 × 103 ton per 106 RMB. All the capacities of Xiamen’s urban and rural solid waste management facilities including incinerators, composting plant, and landfills should be expanded because of increasing waste production rate.

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