Biogas and bio-fertilizer production potential of abattoir waste: implication in sustainable waste management in Shashemene City, Ethiopia

Kefalew, Tamiru; Lami, Misgana

doi:10.1016/j.heliyon.2021.e08293

Cited by 17 publications

(8 citation statements)

References 32 publications

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“…Over time, the focus on waste management has shifted to the circular economy notion, in which resources, energy, and materials are continuously recycled [84]. The development of biorefineries, which turn biowaste into bioenergy and high-value chemicals, has been encouraged in response to the pressures of environmental depletion and resource scarcity [85], and is considered an important step toward implementing a successful circular bioeconomy [86].…”

Section: Waste Management-disposal Stage (Waste To Energy and Value-a...mentioning

confidence: 99%

Circular Economy and Green Chemistry: The Need for Radical Innovative Approaches in the Design for New Products

et al. 2023

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The idea of a circular economy (CE) has gained ground over the past ten years as a means of addressing sustainable development and getting around the limitations of the current and linear dominant production and consumption patterns. The primary goal of a CE is to encourage the adoption of closing-the-loop production methods to improve resource use efficiency, modify chemical processes, and increase product and material lifespan. According to the 2030 Agenda for Sustainable Development, which focuses on 17 Sustainable Development Goals, 14 of which call for the appropriate application of green chemistry (GC) concepts and patterns, the role that chemistry may play in the shift toward more sustainable models is critical. By serving as the foundation for novel products made from renewable feedstocks and designed to be reused, recycled, or recovered with the associated minimum energy requirements, green and sustainable chemistry could be the key to unlocking the economic potential of the CE toward new product design and ultimately solving waste management problems. The aim of this perspective paper, while using a variety of literature sources, is to essentially capture the main issues associated with the CE and GC paradigms and how these two approaches can merge toward sustainable business models and the production of new materials. This integration focuses on reducing waste, conserving resources, and minimizing negative environmental impacts, while also considering economic viability. However, the obstacles to achieving implementation of the CE and GC principles are investment, environmental education, and legislation. To advance toward the circular economy and green chemistry, international agreements should be reconsidered to provide an appropriate framework, including the creation of incentives for businesses and individuals to adopt circular practices, the establishment of education programs to promote the benefits of circular practices, and the development of regulations to support the transition to sustainable production and consumption patterns.

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Section: Waste Management-disposal Stage (Waste To Energy and Value-a...mentioning

confidence: 99%

Circular Economy and Green Chemistry: The Need for Radical Innovative Approaches in the Design for New Products

et al. 2023

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“…One of the most prevalent traditional biomasses used by families for cooking is dung cake, which is animal dung that has been compressed into cake shape. In addition, animal excrement may be utilized in the generation of biogas [55]. Households in certain rural areas of the nation are where the process of producing biogas from animal manure and other organic matter is initiated.…”

Section: Residue and Dungmentioning

confidence: 99%

A Review on Renewable Energy Scenario in Ethiopia

Tahiru,

Takal,

Sunkari

et al. 2023

IJEE

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Although Ethiopia is one of the world's fastest-growing economies, access to sustainable energy and cutting-edge clean energy technology remains a major concern. The government is making significant efforts to generate renewable energy and provide more access to its citizens. Despite this, traditional fuels (charcoal, fuel wood, dung cakes, and agricultural waste) account for around 87 percent of Ethiopia's energy use, and they pose a range of health and environmental risks. Solar, hydro, wind, and geothermal resources abound in the nation, but only 5% of the country's total hydroelectric capacity is being used; while, the rest is either underutilized or underdeveloped. An in-depth look at Ethiopia's renewable energy potential, as well as the opportunities and problems it faces, is presented in this review. With a combined installed capacity of over 7000 MW, hydropower and wind power are the most promising renewable energy sources in Ethiopia as of yet. It is hoped that this assessment will shed light on how Ethiopia can harness and maximize the use of its abundant renewable energy sources.

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“…The growing demand for meat worldwide for human consumption has made the meat production industry become the fastest-growing agricultural-based industry in the world [1,2]. A steady growth in meat production and consumption has been estimated at a further 10 billion in developing countries and at 1.5 billion in industrialized countries by the year 2050 [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…The waste produced during slaughtering activities includes meat trimmings, fats, rumen contents, condemned organs, blood, green and red offal, and wastewater [7,8]. Approximately 20-50% of the weight of the slaughtered animal is not suitable for human consumption [1][2][3][4][5][6][7][8]. This waste, if not managed well, may be hazardous to the environment and animal and human health by spreading diseases and other toxins [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Impact of Thermal Pretreatment on the Physicochemical Characteristics and Biomethane Yield Potential of Solid Slaughter Waste from High-Throughput Red Meat Abattoirs Valorized as a Potential Feedstock for Biogas Production

Matjuda,

Tekere,

Thaela-Chimuka

2024

Sustainability

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Rapid urbanization worldwide results in high demand for meat products, which in turn result in high numbers of animals being slaughtered for human consumption to meet food security demands, especially in low-income countries such as South Africa. The waste produced during slaughtering can serve as feedstock for biogas production. This study aims to determine the impacts of pasteurization and sterilization pre-treatments on high-throughput red meat abattoir solid slaughter waste’s physicochemical properties and biomethane yield when used as a feedstock for biogas production. Abattoir solid slaughter waste was collected from 45 high-throughput red meat abattoirs across South Africa and the various physicochemical properties were determined using standard methods, along with the impact of sterilization and pasteurization on red meat abattoir waste. Biomethane yield analysis was performed using AMPTS II with a hydraulic retention time of 40 days. Pasteurization and sterilization pretreatment was seen to increase physicochemical parameters such as pH, volatile solids, total solids, carbon, and nitrogen analyzed in all samples. Pasteurization and sterilization were also seen to increase biomethane yield, where methane production ranged from 610.67 Nml to 1756.30 Nml, 1592.20 Nml to 3319.30 Nml, and 949.57 Nml to 3297.87 Nml for untreated, sterilized, and pasteurized samples, respectively. There was no significant difference (p < 0.05) observed in the effect pasteurized and sterilized samples had on physicochemical properties and biomethane yield. It can be concluded that pasteurization and sterilization enhance the bioavailability of the physicochemical properties and biomethane yield of red meat solid slaughter waste when valorized as feedstock for biogas production.

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Biogas and bio-fertilizer production potential of abattoir waste: implication in sustainable waste management in Shashemene City, Ethiopia

Cited by 17 publications

References 32 publications

Circular Economy and Green Chemistry: The Need for Radical Innovative Approaches in the Design for New Products

Circular Economy and Green Chemistry: The Need for Radical Innovative Approaches in the Design for New Products

A Review on Renewable Energy Scenario in Ethiopia

Impact of Thermal Pretreatment on the Physicochemical Characteristics and Biomethane Yield Potential of Solid Slaughter Waste from High-Throughput Red Meat Abattoirs Valorized as a Potential Feedstock for Biogas Production

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