Multi-Attribute Assessment of Waste-to-Energy Technologies for Medical, Industrial, and Electronic Residual Wastes

2021 ◽  
pp. 1-44
Author(s):  
Reynald Ferdinand Manegdeg ◽  
Analiza Rollon ◽  
Florencio Ballesteros ◽  
Eduardo Magdaluyo ◽  
Louernie De Sales-Papa ◽  
...  
Keyword(s):  
Waste To Energy ◽  
Empirical Literature ◽  
Technical Knowledge ◽  
Industry Data ◽  
Future Studies ◽  
Energy Technologies ◽  
Sanitary Landfills ◽  
Small Footprint ◽  
Set Up ◽  
Conversion Technologies

Abstract There is a global need for residual waste management to prevent environmental and health hazards and reduce its volume for disposal to sanitary landfills. A waste-to-energy (WtE) facility can provide solutions by converting energy from waste to generate electricity. In this study, a method of selecting the most appropriate WtE technology for residual wastes from medical, industrial, and electronic sectors was formulated and implemented through multi-attribute decision analysis. The preference of the investigators with technical knowledge from different fields of expertise were considered in ranking the most important parameters in the study. From the comparison of seven waste conversion technologies and four power generation technologies, the pyrolysis-Brayton plant was found to be the most suitable WtE technology for residual waste. Using empirical, literature, and industry data, a pyrolysis-Brayton WtE power plant was simulated at capacities of 1, 3, and 10 tons per day (tpd) for the three waste sectors. The results of the study show that a WtE plant can reduce the volume of residual wastes up to 90% and generate electricity up to 1.2 MW for 10tpd plant simulations. The flexibility and small footprint of the pyrolysis-Brayton set-up is suitable for installment in clustered locations. Pilot demonstration is recommended for future studies.

The Latest Updates on Waste-to-Energy and Conversion Technologies: Plus Projects Under Development

2011 ◽  
Author(s):  
Harvey W. Gershman
Keyword(s):  
United States ◽  
Renewable Energy ◽  
Energy Recovery ◽  
The United States ◽  
Waste To Energy ◽  
Processing Waste ◽  
Renewable Energy Technologies ◽  
The Past ◽  
Energy Technologies ◽  
Conversion Technologies

Technologies that burn municipal solid waste (MSW) with energy recovery have come a long way in the past 100 years. Although the last new MSW-processing waste-to-energy (WTE) facilities constructed in the United States commenced operations in 1996, recent years have witnessed a renaissance of interest and activity, some of it in traditional mass-burn combustion but more in new conversion technologies. This presentation will provide an update on these renewable energy technologies and highlight several projects under development.

Procurement of Emerging Waste-to-Energy Technologies

2010 ◽  
Author(s):  
Teno A. West
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Solid Waste Management ◽  
Waste To Energy ◽  
Private Company ◽  
Procurement Process ◽  
Energy Technologies ◽  
Waste Separation ◽  
Conversion Technologies ◽  
The City

The City of Taunton, MA (City) has undertaken a competitive procurement process to consider proposals for a private company to develop, design, permit, finance, construct and operate a Solid Waste Management Facility (SWMF), which may be sized up to 1800 tons per day (TPD), to serve both the City’s and region’s needs for long term solid waste management. A comprehensive Request for Qualifications and Proposals (RFQP) for the SWMF was issued in June 2008. The City initiated the procurement process because its current landfill is scheduled to reach capacity in 2013. The procurement process focused on conversion technologies capable of recovering materials and producing electricity or fuels, and maximizing diversion of waste from landfilling. Technologies considered included both traditional and emerging technologies; e.g., composting, co-composting, thermal gasification, aerobic and anaerobic digestion, hydrolysis and mechanical means of waste separation into useful products. Landfilling and traditional waste-to-energy technologies were not considered.

scholarly journals Characteristics of Selected Waste-To-Energy Technologies and Suitability for Oman

2017 ◽  
Author(s):  
Wajeeha A. Qazi ◽  
Mohammed F.M. Abushammala
Keyword(s):  
Economic Development ◽  
Municipal Solid Waste ◽  
Greenhouse Gas ◽  
Solid Waste ◽  
Waste To Energy ◽  
Waste Generation ◽  
Energy Technologies ◽  
Waste Characteristics ◽  
Treatment Facilities ◽  
Set Up

The fast economic development and urbanization caused rapid increase of waste generation worldwide. Oman produced 1.5 million tons of municipal solid waste (MSW) in 2012 which is expected to elevate to 1.89 million tons in 2030. This rapid increase needs to be tackled to reduce the generation rates along with the environmental impacts it imposes. Currently in Oman other than recycling there are no treatment facilities, and therefore dumping waste into the landfill is the only and ultimate way to dispose solid waste. Thus this research aims present the process and specific aspects of Waste-To-Energy (WTE) technologies and determine the suitable technology for Oman depending on its waste composition and characteristics. In conclusion, the waste characteristics shows the potential to set up a WTE technology in Oman which will help to reduce the amount of waste, greenhouse gas emissions, developing and maintaining costs of landfills, and tackle the issue of portable water by using the produced energy for seawater desalination.

The Latest Updates on Waste-to-Energy and Conversion Technologies; Plus Projects Under Development

2012 ◽  
Author(s):  
Harvey W. Gershman ◽  
Mark Hammond
Keyword(s):  
United States ◽  
Renewable Energy ◽  
Energy Recovery ◽  
The United States ◽  
Waste To Energy ◽  
Processing Waste ◽  
Renewable Energy Technologies ◽  
The Past ◽  
Energy Technologies ◽  
Conversion Technologies

Technologies that burn municipal solid waste (MSW) with energy recovery have come a long way in the past 100 years. Although the last new MSW-processing waste-to-energy (WTE) facilities constructed in the United States commenced operations in 1996, recent years have witnessed a renaissance of interest and activity, some of it in traditional mass-burn combustion but more in new conversion technologies. This presentation will provide an update on these renewable energy technologies and highlight several projects under development.

scholarly journals Integration of various scales for measurement of insomnia

2021 ◽  
pp. 263208432110100
Author(s):  
Satyendra Nath Chakrabartty
Keyword(s):  
Test Scores ◽  
Data Driven ◽  
Weighted Sum ◽  
Future Studies ◽  
Normal Probability ◽  
Equivalent Test ◽  
Item Scores ◽  
Using Data ◽  
Set Up ◽  
Different Levels

Background Scales for evaluating insomnia differ in number of items, response format, and result in different scores distributions and score ranges and may not facilitate meaningful comparisons. Objectives Transform ordinal item-scores of three scales of insomnia to continuous, equidistant, monotonic, normally distributed scores, avoiding limitations of summative scoring of Likert scales. Methods Equidistant item-scores by weighted sum using data-driven weights to different levels of different items, considering cell frequencies of Item-Levels matrix, followed by normalization and conversion to [1, 10]. Equivalent test-scores (as sum of transformed item- scores) for a pair of scales were found by Normal Probability curves. Empirical illustration given. Results Transformed test-scores are continuous, monotonic and followed Normal distribution with no outliers and tied scores. Such test-scores facilitate ranking, better classification and meaningful comparison of scales of different lengths and formats and finding equivalent score combinations of two scales. For a given value of transformed test-score of a scale, easy alternate method avoiding integration proposed to find equivalent scores of another scales. Equivalent scores of scales help to relate various cut-off scores of different scales and uniformity in interpretations. Integration of various scales of insomnia is achieved by finding one-to-one correspondence among the equivalent score of various scales with correlation over 0.99 Conclusion Resultant test-scores facilitated undertaking analysis in parametric set up. Considering the theoretical advantages including meaningfulness of operations, better comparison, use of such method of transforming scores of Likert items/test is recommended test and items, Future studies were suggested.

Waste-to-Energy Technologies Towards Circular Economy: a Systematic Literature Review and Bibliometric Analysis

2021 ◽  
Vol 232 (7) ◽  
Author(s):  
Ronney Arismel Mancebo Boloy ◽  
Augusto da Cunha Reis ◽  
Eyko Medeiros Rios ◽  
Janaína de Araújo Santos Martins ◽  
Laene Oliveira Soares ◽  
...  
Keyword(s):  
Literature Review ◽  
Bibliometric Analysis ◽  
Systematic Literature Review ◽  
Circular Economy ◽  
Waste To Energy ◽  
Energy Technologies

Statistical tests of differential susceptibility: Performance, limitations, and improvements

2017 ◽  
Vol 29 (4) ◽  
pp. 1267-1278 ◽  
Author(s):  
Marco Del Giudice
Keyword(s):  
Monte Carlo ◽  
Statistical Approach ◽  
Statistical Tests ◽  
Differential Susceptibility ◽  
Initial Response ◽  
Empirical Literature ◽  
False Negatives ◽  
Interaction Index ◽  
Future Studies ◽  
Highly Sensitive

AbstractStatistical tests of differential susceptibility have become standard in the empirical literature, and are routinely used to adjudicate between alternative developmental hypotheses. However, their performance and limitations have never been systematically investigated. In this paper I employ Monte Carlo simulations to explore the functioning of three commonly used tests proposed by Roisman et al. (2012). Simulations showed that critical tests of differential susceptibility require considerably larger samples than standard power calculations would suggest. The results also showed that existing criteria for differential susceptibility based on the proportion of interaction index (i.e., values between .40 and .60) are especially likely to produce false negatives and highly sensitive to assumptions about interaction symmetry. As an initial response to these problems, I propose a revised test based on a broader window of proportion of interaction index values (between .20 and .80). Additional simulations showed that the revised test outperforms existing tests of differential susceptibility, considerably improving detection with little effect on the rate of false positives. I conclude by noting the limitations of a purely statistical approach to differential susceptibility, and discussing the implications of the present results for the interpretation of published findings and the design of future studies in this area.

scholarly journals Technologie energetycznego wykorzystania odpadów

2011 ◽  
Vol 9 (2) ◽  
pp. 103-129
Author(s):  
Krzysztof Biernat ◽  
Paulina Luiza Dziołak ◽  
Izabela Samson-Bręk
Keyword(s):  
Energy Security ◽  
Organic Waste ◽  
Energy Use ◽  
Waste To Energy ◽  
Energy Sources ◽  
Plasma Technology ◽  
Alternative Source ◽  
Energy Technologies ◽  
Biogas Technology

The aim of this paper is to show municipal and organic waste as an alternative source of energy and the benefits which can bring their energy use. These benefits concern both environmental reasons, as well as freedom from conventional energy sources and increasing energy security. The article discusses the biogas technology and plasma technology as the most promising waste to energy technologies.

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