The study looked at how different ways of making briquettes from recycled charcoal dust affect their quality. They tested adding molasses as a binder and changing drying temperature and compaction pressure. They found that using more molasses made the briquettes have more ash and moisture, but less energy. Drying temperature didn't make a big difference, but lower compaction pressure was just as good as higher pressure. The best results were with 10% molasses, 50 MPa pressure, and 29.512 °C drying temperature, giving a high energy content and strong briquettes.