Advancing green sustainability: A comprehensive review of biomass briquette integration for coal-based energy frameworks

With the continuous development of various industries and the increasing use of electricity and fuel, the emission of large amounts of greenhouse gases has seriously affected the ecosystem. Bulk coal is often used as a fuel for metallurgy and power generation, but the harmful gases produced by its combustion cause serious pollution to the environment. To reduce the emission of harmful gases, we found that biomass briquette has the characteristics of low heavy metal content and less pollutant release when burned. In this paper, the preparation and influencing factors of biomass briquette, the characteristics of different types of biomass briquette and the pollution characteristics of biomass briquette are reviewed. The potential pollution during the preparation and combustion of biomass briquette was also discussed from the perspective of life cycle assessment. Compared with bulk coal, biomass briquette emits fewer toxic gases during preparation and combustion, such as NOx and SO2. Secondly, the preparation of biomass briquette can also reduce the burden of water resources and soil. To that end, we explore the hazards caused by the preparation and combustion of biomass briquette, analyze its impact on the environment and human body, and summarize the sulfur and nitrogen retention capacity of biomass briquette to achieve the purpose of reducing harmful gas emissions. The results show that biomass briquette can be used as clean coal-based energy instead of traditional energy because of its low harmful substance content. The development and application prospect of biomass briquette under the framework of sustainable development are discussed.