The aims of the research were to determine the nitrogen contained in human urine before and after applying zeolyte and to determine Â the influence of MgO to nitrogenÂ contained in human urine. The determination of zeolyte adsorption capacity to nitrogen contained in human urine included 3 steps: activation of natural zeolyte, nitrogen adsorption, total nitrogen determination Â by Kjedahl test. Zeolyte activation was done by soaking zeolyte into 0,1 M HCl, Â HNO3,Â and H2SO4 for 1 hour and calcinated for 4 hours at 400Â°C. The adsorption proses was done by adding inactivated and activated Â zeolyte with and without MgO adding. The optimum mass of zeolyte was 3 grams. TheÂ adsorption Â capacities Â of inactivated zeolytes without and with MgO adding were 0.007809% and 0.0102% per gram zeolyte, respectively. The adsorption capacities of activated zeolyte by HCl,Â HNO3, dan H2S04 without MgO adding were 0.00604%, 0.00664% and 0.00917% per gram zeoliyte. The adsorption capacities Â of activated zeolyte by HCl, Â HN03,Â dan H2S04 with MgO adding were 0.00839%, 0.0104%, dan Â 0.011% per gram zeolyte. TheÂ activation Â and MgO adding increased Â the adsorption capacity of zeolyte to nitrogen contained in human urine.
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