How is bio gas modified to function as more effecient fuel in recent past?

Recent advancements in biogas modification have focused on upgrading its methane content through processes like water scrubbing, pressure swing adsorption, and membrane separation. These methods remove impurities such as carbon dioxide and hydrogen sulfide, enhancing the calorific value of biogas. Additionally, researchers are exploring the use of biogas in combination with hydrogen to create synthetic natural gas, further increasing its efficiency as a fuel. Such innovations aim to improve the overall sustainability and performance of biogas as a renewable energy source.