MARATTO

review · Heliyon

RETRACTED: Potential substrates for biogas production through anaerobic digestion-an alternative energy source

202427 citationsOpen accessUniversity of Dar es Salaam

In plain language

Biogas production through anaerobic digestion offers a renewable energy alternative to fossil fuels while addressing waste management challenges. A broad variety of biodegradable organic substrates can be converted into energy, including agricultural wastes, livestock manure, food and fishery residues, municipal waste, human excreta, aquatic plants, and forestry residues. When processed in properly designed biogas systems, these materials generate energy that can be utilised for electricity generation, domestic heating, cooking, and lighting, preventing waste from reaching landfills. Deploying biogas digesters in both urban and remote settings can meet local energy requirements, lower household energy expenditures, and improve indoor air quality by replacing polluting traditional fuels. Furthermore, the technology lowers greenhouse gas emissions, supports sustainable agricultural practices, and contributes to circular economy models through effective waste valorisation.

Key takeaways

  • Anaerobic digestion can transform diverse organic wastes, including agricultural, municipal, industrial food, and fishery residues, into biogas.
  • Properly designed biogas systems can supply renewable energy for electricity, domestic heating, cooking, and household lighting.
  • Utilising biogas digesters in urban and remote communities lowers household energy costs and improves air quality by replacing traditional polluting fuels.
  • Implementing biogas technology diverts waste from landfills, reduces greenhouse gas emissions, and supports circular economy initiatives.

Why it matters

Reliance on fossil fuels and traditional biomass creates severe environmental damage, poor indoor air quality, and high energy costs. Converting everyday municipal, agricultural, and industrial organic wastes into biogas provides communities with clean, local sources of heat, light, and electricity. This simultaneously lowers energy bills, mitigates greenhouse gas emissions, improves living conditions, and reduces landfill pressure.

Commercialisation angle

Biogas technology is an established, applied energy solution that can be deployed by municipal authorities, agribusinesses, and remote or urban households. By converting waste streams such as agricultural residues, manure, and food waste into biogas, operators can generate decentralised electricity, heating, and cooking fuel. Although anaerobic digestion technology is already operational in various contexts, real-world adoption requires properly designed biogas systems suited to specific local substrate mixtures.

AI-generated from the published abstract. Always read the original work before citing.

Abstract

Energy is a crucial part of a comprehensive desire to reach any country's long-term economic and social development. Fossil fuels have for a long time been used as the major global cause of energy. However, dependence on fossil fuels contributes to environmental damage. Biogas generation from biodegradable organic materials is a potential and sustainable substitute for addressing global energy supply inadequacy and curbing the environmental challenges associated with fossil fuels. Biotechnologies particularly anaerobic digestion technology are important process for the recovery of energy from organic materials. Biogas comes from bio-decomposition of various organic substrates and trash. Human excreta, agricultural wastes, industrial food residues, municipal wastes, food wastes and residues, fishery wastes, aquatic plants and forest residues are among the common organic wastes from which biogas is produced today. Properly designed biogas systems play a crucial role in renewable energy production, providing electricity, heating, and lighting from organic waste materials that would otherwise go to landfill. These systems convert agricultural residues, food waste, livestock manure, and even energy crops into biogas, which can be used to power generators, provide heat for cooking, or supply light in homes. In urban and remote areas, biogas digesters offer clean, alternative energy solutions that not only meet local energy demands but also enhance living conditions by reducing the reliance on expensive or polluting energy sources. For instance, households can save on energy costs and improve air quality by using biogas for cooking instead of traditional fuels. Besides, the implementation of biogas technology can significantly mitigate environmental impact by lowering greenhouse gas emissions, reducing waste, and promoting sustainable agricultural practices and supporting circular economy. This review explores a diverse range of potential substrates for biogas production, highlighting their viability as alternatives to fossil fuel-based energy sources and emphasizing the multifaceted benefits they provide to communities.

Research topics

  • Anaerobic Digestion and Biogas Production
  • Hybrid Renewable Energy Systems
  • Biofuel production and bioconversion

Sustainable Development Goals

Read the original research

This page summarises published work. The authoritative version sits with the publisher.

DOI: 10.1016/j.heliyon.2024.e40632

Is something wrong with this record? Report it or request removal.

Discussion

Discuss this research

Have you built on this work, tried to replicate it, or seen it applied in practice? Share what you know. Verified researchers and MARATTO™ domain experts can open a discussion, and any member can reply. Contributions are reviewed before they appear.

No discussion yet. Open the first thread.