The Effect of Using Chicken Egg Shell Waste as a Lime Mixture on pH Parameters in Acid Mine Water Kristanto Jiwo Saputro (1), Heru Suharyadi (1), Yusmardhany Yusuf (2), Bagoes Nur Muhammad (1), Nur Reza Muhammad Yusuf (1), Hanif Khalilullah (1), Sindi Mutika Sari (1)
(1) Department of Mining Engineering , (2) Chemical Engineering, Faculty of Mineral Technology, Universitas Pembangunan Nasional Veteran Yogyakarta,
Abstract
Mining using the open pit method involves water, oxygen and sulfide minerals, which have the potential to produce acid mine drainage. Acid mine drainage has a low pH, namely less than 4. This pH value is less than the environmental quality standard based on Ministerial Decree of the Minister of Environment Number. 113 of 2003 concerning Waste Water Quality Standards for Coal Mining Businesses and Activities. Therefore, neutralizing acid mine drainage is a necessity. One of the methods applied is the active method, namely by administering lime. Based on research by Anthony M. Muliwa (2018) regarding the evaluation of the performance of egg shell waste materials for remediation of acid mine water from coal disposal leachate, it was concluded that egg shells can be used as an alternative material to neutralize acid water but are still less effective. This research will simulate the effectiveness of egg shells using the quicklime mixing method in neutralizing acid mine drainage so that the correct mixing dose is obtained to neutralize acid mine drainage.
