scholarly journals Investigation of Biogas Energy Yield from Local Food Waste and Integration of Biogas Digester and Baking Stove for Injera Preparation: A Case Study in the University of Gondar Student Cafeteria

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Ashenafi Tesfaye Bicks
Keyword(s):  
Food Waste ◽  
Food Processing ◽  
Generation Rate ◽  
Energy Yield ◽  
Waste Generation ◽  
Biogas Energy ◽  
Waste Generation Rate ◽  
The University ◽  
Processing Mechanism

Energy shortage is the main problem while preparing food at the university in Ethiopia. Baking of injera consumes a lot of firewood due to the nature of baking mitad and layout of the system. The daily average firewood consumption is 8600 kg which is equivalent to 790.3 m3 of gas. In this study, an investigation of energy yield from food waste is examined by assessing the daily waste generation rate from the university student cafeteria and configuring the baking stove (mitad) that utilizes biogas energy. CFD is used to investigate the performance and heat distribution of baking mitad. In the study, the measured average daily biodegradable food waste and kitchen waste generation rate in the campus is around 863 kg/day. The conversion of this food waste using the anaerobic digestion system yields 43.2 m3 biogas per day. Utilizing the daily biogas generated for baking injera improves the overall food making process and reduces firewood consumption by 5.4%. This biogas energy yield is considered to be utilized for baking injera in the kitchen. The designed biogas mitad (stove) does not generate smoke due to the type of fuel used and configuration of baking mitad. Furthermore, the stove has an insulation mechanism considered to conserve the heat loss to the surrounding. Generally, the utilization of the biogas system and integration of the biogas injera baking stove will improve the overall food processing mechanism in the university.

scholarly journals Evaluation of Household Food Waste Generation in Hanoi and Policy Implications towards SDGs Target 12.3

2020 ◽  
Vol 12 (16) ◽  
pp. 6565
Author(s):  
Chen Liu ◽  
Trung Thang Nguyen
Keyword(s):  
Food Waste ◽  
Rural Areas ◽  
Urban Areas ◽  
Animal Feed ◽  
Developing Economies ◽  
Well Being ◽  
Policy Implications ◽  
Waste Generation ◽  
Waste Generation Rate

The issue of food waste, especially in developing economies, is a puzzle. Hanoi was selected as a case study to examine the current situation of food waste generated by consumers through daily habits/practices and to evaluate options for preventing and reducing food waste at the policy level through a literature/policy review and interview-style survey. An analysis of responses found that the self-reported food waste generation rate in Hanoi averaged 1192 g/day/household in urban areas and 1694 g/day/household in rural areas; cooking waste generated during meal processing/preparation accounts for more than 70% of the total; less than 20% of respondents separated out kitchen waste for reuse/recycling before disposal; expiration dates and deteriorating quality were cited as primary reasons for food waste at home in contrast with larger portions and over-ordering outside the home; leftover food is used indirectly as animal feed in urban areas and directly in rural areas; and most respondents indicate a willingness to reduce, reuse, and recycle food waste. To achieve SDG target 12.3, policymakers and practitioners must develop comprehensive food waste policies and actions targeting the entire supply chain, implement practical food waste management systems, and promote sufficiency strategies for saving food, reducing food waste, and maintaining health and well-being.

scholarly journals COMPARISON OF WASTE GENERATION RATE IN DIFFERENT SIZE OF HOTELS (CASE STUDY OF NORTH CYPRUS)

2020 ◽  
Vol 8 (4) ◽  
pp. 701-722
Author(s):  
Soolmaz AZARMI ◽  
Roozbeh VAZIRI ◽  
Mehmet Necati CİZRELİOĞULLARI
Keyword(s):  
Waste Management ◽  
Management Practices ◽  
Negative Impact ◽  
Management Practice ◽  
Generation Rate ◽  
Waste Generation ◽  
High Season ◽  
Waste Generation Rate ◽  
Waste Management Practices

Waste management in hotels has a significant role in reducing the negative impact on the economy and environment. The goal of this study was to discover hotel sector waste (HSW) by quantitative analysis of HSW in different size of hotels. The SPSS software was employed to predict the average HSW generation rate using nationality, type of waste, season, accommodation type, and type of waste management practices as predictors. The results showed that during lean season 2063.4 kg and high season 4160 kg. In the sampled accommodation, also during the lean season, the large hotels waste generation rate was (66.7%), medium hotels (19.4%), and small hotels (13.9%) and in high season HSW generation increase around (45%). From the total amount of waste generated in the sampled accommodation, 36% generated by the kitchen, and in other section, 7% of waste was glass, 8% nylon 4% plastic, 3%bottle, and 5% of wood. Also, 14% of the waste generated was recyclable waste in the sample accommodations. Besides, the result showed that the waste management practice rate in the small hotel is less than another accommodation sample size.                                

Medical Waste Management: A Case Study on Rajshahi City Corporation in Bangladesh

2015 ◽  
Vol 6 (1) ◽  
pp. 173-178 ◽  
Author(s):  
MZ Alam ◽  
MS Islam ◽  
MR Islam
Keyword(s):  
Waste Management ◽  
Medical Waste ◽  
Generation Rate ◽  
Waste Generation ◽  
Different Types ◽  
Medical Waste Management ◽  
Waste Generation Rate ◽  
Rajshahi City ◽  
Medical Wastes

The management of medical waste (MW) is of great importance due to its impact on human health and environment. The present practices of improper management of generated medical wastes in different Healthcare Establishment (HCEs) in Rajshahi City Corporation (RCC) is playing a contributing role to create vulnerable condition in spreading out the Diarrhea, Hepatitis and various skin related diseases. The objectives of the study are to identify different types of wastes, its generation rate and assess the existing waste management in various HCEs. The study was carried out in 14 different HCEs that generated much portion of MW of total generated MW in RCC. The methodology of this project was descriptive and consisted of the use of field survey and interviews with the relevant authorities and personnel involved in the management of MW. It was found that the surveyed HCEs generate a total of 1495 kg/day of MW; of which about 1328.6 kg/day (88.87%) are non-infectious and about 166.4 kg/day (11.13%) are infectious. The average waste generation rate for surveyed HCEs is 1.54 kg/bed/day or 0.30 kg/patient/day. It was found from the survey that there is no proper and systematic management of medical wastes. The study reveals that lack of awareness; financial support and willingness are responsible for improper management of MW. So the RCC and HCEs authorities should adopt appropriate policy regarding this issue and provide training program on relevant personnel who are engaged in medical waste management.DOI: http://dx.doi.org/10.3329/jesnr.v6i1.22062 J. Environ. Sci. & Natural Resources, 6(1): 173-178 2013

Developing models for the prediction of hospital healthcare waste generation rate

2015 ◽  
Vol 34 (1) ◽  
pp. 75-80 ◽  
Author(s):  
Esubalew Tesfahun ◽  
Abera Kumie ◽  
Abebe Beyene
Keyword(s):  
Generation Rate ◽  
Waste Generation ◽  
Healthcare Waste ◽  
Waste Generation Rate
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