The study looked at using biowaste like agriculture waste and sewage sludge along with coal to make a cleaner energy gas. By mixing these materials together and heating them up, they found that more of the carbon turned into gas when there was more biowaste in the mix. This process also produced more gas overall and more hydrogen specifically than expected. The researchers used a special analysis method to figure out the best conditions for this process. Overall, using biowaste in co-gasification with coal can make energy production more efficient and less harmful to the environment.