The Adsorption Process Of Artificial Cu2+ Aqueous Solution Was Investigated By Using Biosorbents Made From Spent Mushroom Substrate (SMS). SMS Is One Of The Most Organic Waste Generated From Agricultural Waste That Contain Lignocellulose. This Study Aims To Determine The Size Of The Surface Area And Iodine Number Of SMS Without Activation And With Activation Using Sodium Hydroxide (Naoh) Wi…