Methylene Blue absorption By Coffee Waste Activated Carbon

Textile industries are one of the major contributors to the environmental pollution problems in the world. Textile industries release many dyes and various contaminants at a variety of ranges. Wastewater needs to be treated before being released into the environment to prevent bad effects on humans and living things. These studies describe how coffee waste activated carbon removes methylene blue dye from wastewater in cost effective way by using coffee waste via a simple absorption method. Coffee waste activated carbon (CWAC) was produced by carbonization and followed by chemical activation using 1M potassium hydroxide (KOH) and physical activation by a furnace for 850° C for 2 hours. The absorption test was erformed with 0.1 g to 0.9 g of CWAC in 100 ml of 500 ppm methylene blue and the samples were taken every 10 minutes. The absorption of dye by CWAC was assessed by using UV-Viss Spectrophotometer. As a result, the coffee waste is possible to treat dyes up to 80 % in a short time. In 10 minutes, 0.1g of AC can remove dyes as much as 79.1%.