Utilization of coal as a direct fuel can cause environmental problems such solid waste in the form fly ash (flyash). This study aims to process into coke using pyrolysis method hope increasing quality and efficiency that is safe for environment. research was conducted 3 stages. The first stage carried out by crushing coal, sieving testing proximate ultimate analyzing calorific value coal. secon...

Controlling nutrient losses from animal manures when they are landapplied is a critical factor in nutrient management, promoting environmental health and maintaining the sustainability of animal agriculture. Phosphorus is of particular concern due to its implication in eutrophication of surface waters and declines in water quality. We conducted a laboratory experiment to test the effect of seve...