Performance of Silica Membranes from Fly Ash Coal of PT Semen Baturaja in Reducing Metal Content in Mine Acid Water

Lety Trisnaliani, Indah Purnamasari, Fatria Ahmadan


Mine acid water has a high level of acidity as a result of oxidation of rocks containing pyrite and sulfide minerals from the remains of rocks exposed to oxygen in the water, which usually contain high metal content. One way to reduce the metal content in acid mine water is to use a silica membrane. In the study, silica membranes were made by extracting silica from fly ash by using two types of solvents or extractors, namely HCl and HNO3.  The adsorption time are 100 minutes, 120 minutes, and 140 minutes with the aim to find out which extractors can produce membranes with performance good and optimum time in the absorption of metal content from acid mine drainage. SEM analysis shows that there is no pore formed on the membrane. Based on the results of the analysis of the research conducted, it can be seen that the membrane with HCl extractor can work better in reducing metal content with optimum adsorption time in the 140th minute. Acid mine drainage also experienced a decrease in flux from 14.9283 L / m2 hours to 6.8244 L / m2h for the membrane with HCl extractor and for HNO3 membrane decreased from 11.9427 L / m2h to 7.6774 L / m2h.


Keywords: Silica Membranes, Fly Ash Coal, Metal Content, Mine Acid Water, extractor 

Full Text:

Full text PDF



Agustin, R., Extraction and Determination of Silica Content (SiO2)

Extraction Results from Fly Ash (Fly Ash) Coal. Jember: Final

Project of the Department of Chemistry, State University of

Jember, 2013.

(2018) Available : [Online].

(2018) Available : [Online]

Brinker, C.J., Scherer, G.W., Applications. In: Sol-Gel Science, The

Physics and Chemistry of Sol-Gel Processing. Academic Press, San

Diego, CA, pp. 839-880, 1990.

Suprihatin,E., Zaharani,T.A., and Dewi,T.K.., Making Silica

Membrane from Fly Ash and Its Application to Reduce COD and

BOD Levels of Palm Oil Liquid Waste. Journal of Chemistry,

Tanjungpura University. 4 (3), 48-53, 2012.

Afrianty,C, Gustin,L., dan Dewi,T.K., Processing of Acid Mine Water

Waste Using Ceramic Membrane Technology. Journal of Chemical

Engineering, Sriwijaya University. 18 (3), 16-25., 2012.

Kheloufi, A., Berbar, Y., Kefaifi, A., Medjahed, S.A., Kerkar F.,

Improvement of ImpuritiesRemoval from Silica Sand by Leaching

Process.Algeria: Silicon Technology Development Unit, 2009.

Denida, M.A., Silica Purification in fly ash from Power Plants in

Paiton with Dissolution of Acid Chloride and Aqua Regia, MIPA ITS,

Rini,A.P., Hastuti,R., dan Gunawan., The Effect of Poly Ethylene

Glycol (PEG) Composition in Silica Solid Membrane Synthesis from

Rice Husk and Its Application for Decolorization of Batik Liquid

Waste. Essay. Faculty of Mathematics and Natural Sciences,

Department of Chemistry, Diponegoro University, 2008.

Amalina,Y.N., Salimin,Z., dan Sudarno. Effect of pH and Processing

Time on the Removal of Cr, Fe, Zn, Cu, Mn, and Ni Heavy Metals in

Wastewater Electroplating Industry with Biochemical Oxidation

Process. Journal of Environmental Engineering at Diponegoro

University. 4 (3), 1-9, 2015.

Ardiansyah dan Kusuma,A.B., Characteristics of Flux Reduction in

Humic Acid Solution Filtration with Microfiltration. Journal of

Chemical Technology. 2 (2), 267-274, 2013.

Zulfi,F., Dahlan, dan Sugita, Characteristics of Membrane Flux in

Metal Coating Industry Liquid Waste Filtration Process. Journal of

Biophysics, Bogor Agricultural University. 10 (1), 19-29, 2014.



  • There are currently no refbacks.


Editorial Office:

Department of Chemistry, Faculty of Mathematics and Natural Sciences Universitas Sriwijaya
Jl. Palembang-Prabumulih Km.32 Indralaya 30662
Phone: +62-711-580269


Creative Commons License
IJFAC by Department of Chemistry Sriwijaya University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License