Abstract
The handling of Acid Mine Water done at PT. Alamjaya Bara Pratama utilizes Cao and from prior research, fly ash is used as an adsorbent in neutralising Acid Mine Water. Hence the resarcher conducted the research to compare the effectiveness of Cao and fly ash in neutralising Acid Mine Water. The usage of CaO nd fly ash uses a laboratorium scale with 1000ml of Acid Mine Water, a CaO mass variation of 0,4, 0,5 and 0,6 gram whereas with a fly ash mass variation of 50, 55 and 60 gram and a stirring speed of 50 and 100 rpm. Results shows that the addition of CaO and fly ash and stirring speed increases the pH and reduces the content of Fe and Mn. The adsorbtion of the metals Fe and Mn by CaO and coal fly ash can occurs as most CaO contains the mineral compund Epistilbite (CaAl2Si6O16.5H2O), before conducting the experiment it shows that most of the fly ash contains the mineral compund Quartz (SiO2) and mullite (Al6Si2O13). Silica and Alumina has a polar side with an active hydroxyl group (-OH) which acts in the adsorbtion process between heavy metals and adsorbents in a solution containing water.
Highlights
Every industrial activity creates environmental problems if not managed well
The formulation of the several problems in this research are 1) Whether CaO and fly ash can be used as an adsorbent for the metals Fe and Mn? 2) How effective the fly ash is in increasing pH levels and decreasing the metal content of Fe and Mn? The aims of this study are: 1) Analyse the adsorbent characteristics by testing for X-Ray Diffraction (XRD) and Scanning Microscopy (SEM) before and after laboratory tests; 2) Analyse the ratio of CaO and fly ash effectivity based on dosage, time, and stirring speed in neutralising the contents of acid mine water
The results show that CaO and fly ash can increase the pH level of Acid Mine Water and reduce the Fe and Mn content
Summary
Every industrial activity creates environmental problems if not managed well One of these problems faced by the coal mining industry is Acid Mine Water (AMW). The chemicals that can be used to process Acid Mine Water namely CaO and fly ash. The formulation of the several problems in this research are 1) Whether CaO and fly ash can be used as an adsorbent for the metals Fe and Mn? The aims of this study are: 1) Analyse the adsorbent characteristics by testing for X-Ray Diffraction (XRD) and Scanning Microscopy (SEM) before and after laboratory tests; 2) Analyse the ratio of CaO and fly ash effectivity based on dosage, time, and stirring speed in neutralising the contents of acid mine water The formulation of the several problems in this research are 1) Whether CaO and fly ash can be used as an adsorbent for the metals Fe and Mn? 2) How effective the fly ash is in increasing pH levels and decreasing the metal content of Fe and Mn? The aims of this study are: 1) Analyse the adsorbent characteristics by testing for X-Ray Diffraction (XRD) and Scanning Microscopy (SEM) before and after laboratory tests; 2) Analyse the ratio of CaO and fly ash effectivity based on dosage, time, and stirring speed in neutralising the contents of acid mine water
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