Removal of ammonium and phosphate in the simulated wastewater by using coal fly ash adsorbent

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Komala Affiyanti Affandi Arseto Yekti Bagastyo


The main composition and availability of fly ash cause this waste which has potential as an adsorbent to remove ammonium and phosphate in water. Difference of main composition will cause different removal efficiency. The purposes from this research are to determine optimal condition for removing concentration ammonium and phosphate and to determine the source of fly ash which has great potential for ammonium and phosphate removal in solution. The optimal conditions were carried out by varying pH of solution and adsorbent dosages to remove ammonium and phosphate concentrations in different initial concentrations. Optimum pH of solution in this research is 8 with range of ammonium removal efficiency 8% to 14% and 16% to 75% for removing phosphate which has condition ammonium concentration higher than phosphate. Ammonium concentration lower than phosphate will have a negative effect on the removal. Adsorbent dosage of 4.5 g is able to produce optimal removal efficiency both ammonium and phosphate. From five different sources of fly ash, Punagaya fly ash has the great potential for removal ammonium and phosphate simultaneously which has an adsorption capacity of 7.17 mg/g and 19.50 mg/g for ammonium and phosphate respectively.

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Ahmaruzzaman, M. (2010). A Review on The Utilization of Fly Ash. Progress in Energy and Combustion Science, 36(3), 327–363.

Chen, X., Song, H., Guo, Y., Wang, L., & Cheng, F. (2018). Converting Waste Coal Fly Ash Into Effective Adsorbent for The Removal of Ammonia Nitrogen in Water. Journal of Materials Science, 18, 1–10.

Cheng, Q., Li, H., Xu, Y., Chen, S., Liao, Y., Deng, F., & Li, J. (2017). Study on The Adsorption of Nitrogen and Phosphorus from Biogas Slurry by NaCl-Modified Zeolite. PLoS ONE, 12(5), 1–12.

Feng, C., Zhang, S., Wang, Y., Wang, G., Pan, X., Zhong, Q., Xu, X., Luo, L., Long, L., & Yao, P. (2020). Synchronous Removal of Ammonium and Phosphate from Swine Wastewater by Two Agricultural Waste Based Adsorbents: Performance and Mechanisms. Bioresource Technology, 307, 1–8.

Fitriana, A. R., & Warmadewanthi, I. (2016). Penurunan Kadar Amonium dan Fosfat pada Limbah Cair Industri Pupuk. Jurnal Teknik ITS, 5(2), 107–111.

Guaya, D., Valderrama, C., Farran, A., Armijos, C., & Luis, J. (2015). Simultaneous Phosphate and Ammonium Removal from Aqueous Solution by A Hydrated Aluminum Oxide Modified Natural Zeolite. CHEMICAL ENGINEERING JOURNAL, 271, 204–213.

Hermassi, M., Valderrama, C., Moreno, N., Font, O., Querol, X., Batis, N. H., & Cortina, J. L. (2017). Fly ash as Reactive Sorbent for Phosphate Removal from Treated Waste Water as A Potential Slow Release Fertilizer. Journal of Environmental Chemical Engineering, 5(1), 160–169.

Ji, X. D., Zhang, M. L., Ke, Y. Y., & Song, Y. C. (2013). Simultaneous Immobilization of Ammonium and Phosphate from Aqueous Solution using Zeolites Synthesized from Fly Ashes. Water Science & Technology, 67, 1324–1331.

Kishor, P., Ghosh, A. ., & Kumar, D. (2009). Use of Flyash in Agriculture : A Way to Improve Soil Fertility and its Productivity. Asian Journal of Agriculture Research, 1–14.

Kumar, K., Kumar, S., Gupta, M., & Chander, H. (2017). Characteristics Of Fly Ash In Relation Of Soil Amendment. Materials Today: Proceedings, 4(2), 527–532.

Kusuma, Y. A. (2019). Recovery Fosfat dari Limbah Cair PT Petrokimia Gresik dengan Proses Kristalisasi Menggunakan Reaktor Fluidized Bed. Institut Teknologi Sepuluh Nopember.

Larasati, A., & Notodarmojo, S. (2014). Kesetimbangan dan Kinetika Penyisihan Orthofosfat dari dalam Air dengan Metode Adsorpsi-Desorpsi. Jurnal Teknik Lingkungan, 20(1), 38–47.

Lu, S. G., Bai, S. Q., Zhu, L., & Shan, H. D. (2009). Removal Mechanism of Phosphate from Aqueous Solution by Fly Ash. Journal of Hazardous Materials, 161, 95–101.

Myllymäki, P., Pesonen, J., Nurmesniemi, E. T., Romar, H., Tynjälä, P., Hu, T., & Lassi, U. (2020). The Use of Industrial Waste Materials for the Simultaneous Removal of Ammonium Nitrogen and Phosphate from the Anaerobic Digestion Reject Water. Waste and Biomass Valorization, 11(8), 4013–4024.

Niu, Y., Zhao, Y., Xi, B., Hu, X., Xia, X., Wang, L., Lv, D., & Lu, J. (2012). Removal of Ammonium from Aqueous Solution using Synthetic Zeolite Obtained from Coal Fly Ash. Fresenius Environmental Bulletin, 21(7), 1732–1739.

Pohan, M. S. A., Sutarno, & Suyanta. (2016). Studi Adsorpsi-Desorpsi Anion Fosfat pada Zeolit Termodifikasi CTAB. Jurnal Penelitian Sains, 18(3), 123–135.
Ragheb, S. M. (2013). Phosphate Removal from Aqueous Solution using Slag and Fly Ash. HBRC Journal, 9(3), 270–275.

Slamet, & Imas, K. (2017). Pemanfaatan Limbah Fly Ash untuk Penanganan Limbah Cair Amonia. Kimia Dan Kemasan, 39(2), 69–78.

Uğurlu, M., & Karaoğlu, H. (2011). Adsorption of Ammonium from An Aqueous Solution by Fly Ash and Sepiolite : Isotherm , Kinetic and Thermodynamic Analysis. Microporous and Mesoporous Materials, 139, 173–178.

Zhang, M., Zhang, H., Xu, D., Han, L., Zhang, J., Zhang, L., Wu, W., & Tian, B. (2011a). Removal of Phosphate from Aqueous Solution Using Zeolite Synthesized from Fly Ash by Alkaline Fusion Followed by Hydrothermal Treatment. Separation Science and Technology, 46, 46–53.

Zhang, M., Zhang, H., Xu, D., Han, L., Niu, D., Tian, B., Zhang, J., Zhang, L., & Wu, W. (2011b). Removal of Ammonium from Aqueous Solutions using Zeolite Synthesized from Fly Ash by A Fusion Method. Desalination, 271, 111–121.