Recent Advancements in Anaerobic Digestion and Gasification Technology

Abstract

In recent times, there has been a growing demand for the use of biomass as an alternative energy due to its sustainable nature. At present, anaerobic digestion and gasification has been proven as a promising technology for exploiting this energy from biomass. This review aims to provide a comprehensive and detailed analysis of the combination of anaerobic and gasification technology as a hybrid system for sustainable waste-to-energy generation. This review reveals that both anaerobic digestion and biomass gasification have been successfully demonstrated as technologies for energy recovery. However, to improve the conversion efficiency in both technologies, the utilization of an intensifier, additive, and enhancer will be required. Moreover, temperature has been identified as a major factor affecting the technologies and should be considered. The bibliometric study conducted revealed that China is the leading country and has set the pace for other countries to follow suit. Subsequently, waste-to-energy research could be easily implemented on a global scale. This study recommends an experimental study of anaerobic digestion and gasification as a hybrid system.

Renewable Energy Systems 2023

“…The production of biogas from anaerobic digestion processes that start in wastes is a relevant topic in the current energy framework, and it fulfills the goals of the green circular economy [22]. In the work of Obileke et al [23], a wide-ranging literature review is presented, focusing on the most recent advancements in anaerobic digestion and gasification technology for the sustainable waste-to-energy paradigm. The methodology followed is a conceptual review, which contributes to a better understanding of the topics discussed.…”

Biofuel production from agricultural residues: A promising pathway for renewable energy

“…Here, to better describe biochemical and thermochemical processes and help in the optimization of process parameters, a kinetic model built in Solidworks is being developed. In order to bridge the gap between theoretical simulations and real-world results, the model must be validated using experimental data [15]. The study's ultimate goal is to provide a solid framework that business people, academics, and legislators can utilize to tap into the latent potential of agricultural waste products, therefore fostering a greener, more energy-efficient future.…”

“…Agricultural leftovers as renewable energy resources are becoming more important as the world addresses energy security and climate change. This literature review synthesizes academics, scientists, and practitioners' perspectives to explain the technical, environmental, and socio-economic aspects of biofuel generation from these leftovers [15]. The combination of knowledge from peerreviewed articles, academic journals, conference papers, and reputable online repositories illuminates the current landscape and guides the research endeavor toward a nuanced understanding of the challenges and pathways that hold the promise of biofuel production from agricultural residues as a viable and impactful renewable energy solution.…”

Syngas Fermentation: Cleaning of Syngas as a Critical Stage in Fermentation Performance

“…Syngas is produced from pyrolysis/gasification using different materials as inputs. The great advantage of thermal processing is its versatility, being capable of treating fossil sources such as oil sludge, a viscous residue derived from crude extraction and processing, heavy oil, coal, plastics and also renewable sources such as biomass, manures, and organic wastes in general [23][24][25][26][27][28]. The gas produced has a low volumetric energy density mainly due to H 2 and CO.…”