scholarly journals Recovery of Food Wastes for a Potential Maggot Production as Animal Feed and Solid Waste Management

Author(s):  
Kulyash Meiramkulova ◽  
Gulmira Adilbektegi ◽  
Galym Baituk ◽  
Aigul Kurmanbayeva ◽  
Anuarbek Kakabayev ◽  
...  

Waste recovery is an important aspect towards human and environmental health protection. Unfortunately, proper food waste management is among the serious challenges in the field of solid waste management worldwide. Therefore, it is of great importance to conduct studies towards achieving efficient and cost-effective approaches for food waste management. This study investigated the potential of recovering food waste through maggots’ production as animal feed. The influence of fly attractant application on maggot production was also investigated. The study also investigated the potential of maggot production for waste recovery and reduction. Four different types of food waste (starch food leftovers, rotten bananas and peels, rotten pineapple and peels, and rotten oranges) were used in the investigation process. From the results, it was observed that the application of fly attractants had a significant effect on the production of maggots as determined by the weights after harvesting. Average weight of 94 g/kg of maggot was achieved from banana materials with an application of fly attractant during the 8th day of the cultivation; which is equivalent to a 32.4% increase from the same day when the material was cultured without applying fly attractant. Also, from the starch materials, about 77 g/kg of maggot weight was achieved; which is a 54.6% increase from the same day and the same material but without application of fly attractant. Moreover, the relative dry weight reduction in the trials varied from 52.5% to 82.4%.

Author(s):  
Arkendu Ghosh ◽  
Vijay Kant Singh ◽  
Koyel Dey ◽  
Monika Patel ◽  
Apurba Pal

2021 ◽  
Vol 7 (2) ◽  
Author(s):  
Maryam Sharafi ◽  
Sheida Atashkar ◽  
Tooraj Massahi

Background: Determining and recognizing solid waste composition can be considered as the first and main step in planning and developing waste management processes in an area. Objectives: The objective of this study was to investigate the production and determination of waste composition in Kermanshah School of Public Health, and evaluate the challenges ahead and present practical suggestions based on results for better solid waste management. Methods: Collection, separation, and weight measurement of solid wastes in the school of Public Health, and departments such as self-service, laboratories, buffet, office, and yard, were done during a working week from Saturday to Wednesday. Then the results and data were analyzed using Excel software version 2019. Results: The results of data analysis, after collecting, separating, and weighing each solid waste component revealed that food waste accounts for 48% of the total solid waste production. Also, other waste components include 32% plastic, 14% paper and cardboard, 6% garden waste, and nearly 0% glass and metals, together comprising an average amount of waste produced daily from Saturday to Wednesday during a week. It was also found that the generated waste per capita was 104.29 grams per person per day. The highest and lowest amount of generated waste per capita was related to food waste with 49.45 grams per day and metal waste with 0.17 grams per day, respectively. Conclusions: Due to the predominant percentage of organic matter and the small portion of the glass and metal waste in the composition of waste produced in the school, the application of compost production methods seems to be a justifiable and economical way to dispose of the waste generated in the School of Public Health. Also, the presence of paper, cardboard, and plastic in the mentioned quantities warns us to pay attention to the recycling programs from the source.


Author(s):  
David O. Olukanni ◽  
Ola O. Oresanya

One of the challenges of Lagos State is efficient and cost-effective solid waste management. This paper focuses on progress made in waste management operations in the State. An assessment to know how waste generation, collection, transportation and disposal have put demands on state resources, and its physical infrastructure was carried out. The state generates about 12,000 metric tons of waste daily (0.72kg/person/day). Due to limited budgetary allocation, the state government instituted the Lagos State Waste Management Authority (LAWMA) to perform supervisory roles and charged with the implementation, advocacy, monitoring and enforcement of waste management policies. As part of its roles, the agency enlisted Private Service Providers (PSP) for the purpose of appropriate billing of waste services. LAWMA centrally collects revenue and remits agreed portion of 60% of waste charges to individual PSP accounts in accordance to estimated waste collected. The state is focused on resource recovery programs such as composting, land filling and pelletizing of plastics and nylons. The implications (environmental, economic, social and financial) for managing solid waste gives credence to the renewal campaign for resource conservation and environmental sustainability. Thus, the 4 Rs of waste management – Reduction, Reuse, Recovery and Recycling are being demonstrated through establishment of compost production plant, championing of Waste-To-Wealth Initiatives and Renewable Energy (RE).


2018 ◽  
Vol 7 (2.29) ◽  
pp. 460
Author(s):  
Abdul Rahman Muhammad Firdaus ◽  
Mohd Armi Abu Samah ◽  
Khairul Bariyah Abd Hamid ◽  
Ahmed Jalal Khan Chowdhury

Composting as a method of solid waste management should be given attention. It gives means of producing a valuable end product, by treating of organic wastes in an environmentally friendly method which does not release any hazardous chemical which can affect human health without causing a major disruption to the surrounding ecosystem. Nevertheless, the issue of time-consuming arises and this correspond to the sink of market demand. The optimized pre-composting process was done through drying, grinding and controlled aeration resulted in the fast-compost formation and cost-effective. This study aimed to discover the physical properties of food waste in composting process. The controlled parameter of the composting which is aeration time where pre-composting processes applied was drying and grinding. The manipulated parameter of composting process happened within two durations: rotation and rest. Each container has been rotated for 15 minutes yet different resting time was applied which are 15, 25, 50, 150 minutes namely A, B, C and D. The data collection has been done in hourly basis for the total of 72 hours. Based on the statistical analysis, results show that mass reduction of samples (A=38.6%, B=32.6%, C=24.6%, D=22.6%). The compost temperature ranged between (23°C - 39°C) while the compost pH was (5.12 – 5.85). Peak level of surrounding temperature was (35.7°C) while surrounding relative humidity (53%) in normal condition. Among the highest moisture content was (52.63%) while the lowest discovered in sample D (24.81%) respectively. Results show that with the longer the aeration time, the better physical properties of compost formed. The obtained data will provide evidence on its significances application to the agencies, the public and the industrial player to cope up with this major environmental threat. This study found a significant relationship between physical factors and compost formation which contribute to better analysis, especially to food waste management.  


2018 ◽  
Vol 9 (2) ◽  
pp. 99-105
Author(s):  
Masoumbeigi Hossein ◽  
Safavi Seyed Abbas ◽  
Yousefi khoraem Mohammad ◽  
Mahmoudi Norouz

Background: Planning and optimum waste management as the first step has need to waste characterization studies including the existing status, quantity and quality (physical composition) of generated solid waste at University. The aim of this study was evaluation of the existing situation, identification of the quantity and quality of solid waste in one of Iranian military universities. Materials and methods: This cross-sectional research was done in one of the Iranian military universities. The status of waste management was determined using self-made checklist (valid and reliable) and site visits and documents analysis. Quantity, quality, and physical analysis of waste was determined by weighting via trained personnel. The collected data were analyzed using SPSS 18 software and descriptive statistical methods. Results: Existing situation of waste management which has 58 score was weak in comparison with desirable situation as 112 score. The average weight, capitation and density of the waste were 419 kg/d, 288 gpc/d and 105.3 kg/m3 respectively. Putrescible waste 40.15%, paper and cardboard 13.99%, soft plastics 13.10%, dried plastics 6.35%, wood and plant waste 6.14%, glass 5.64% and ferrous metals 0.82% were the predominant components. Conclusion: Despite separation of valuable dry wastes, waste management status in this university is not desirable. . 40% of total wastes were valuable and recyclable. Recycle is a best-recommended procedure, which can lead to volume and capitation reduction and decreasing of collection, transport and disposal costs nearly 50%.  


Proceedings ◽  
2020 ◽  
Vol 30 (1) ◽  
pp. 53
Author(s):  
Paraskevi Panteli ◽  
Maria Georgiou ◽  
Nikolaos Stylianidis ◽  
Eleni Tsiplakou ◽  
Nadine Paßlack ◽  
...  

Food waste represents 25–35% of the European Municipal Solid Waste (MSW) [1], thus its diversion into innovative utilization streams is critical for sustainable waste management and the achievement of circularity. [...]


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