Formation of Phosphate Crystals from Cow Urine Using Aeration System Batch Reactor

Reza Fadilah, Windia Hanifah, Devy Cendekia, Adityas Agung Ramandani


The waste generated from the livestock sector is cow urine containing nitrogen, sulfur, phosphate, ammonium, sodium, manganese, iron, silica, chlorine, magnesium and calcium. The aim of this research is to reduce phosphate levels which will have an impact on the environment caused by cow urine which contains phosphate and ammonium and forms phosphate crystals using a batch reactor with an aeration system. The results of wastewater treatment using a batch reactor produce precipitate in the form of phosphate crystals which can be used as fertilizer for plants. This study used a completely randomized design (CRD) with two repetitions, namely with a comparison of the rate of aeration (air flow) 1 Lpm, 1.5 Lpm and 2 Lpm with the time used, namely 0 minutes, 60 minutes, 120 minutes, 180 minutes and 240 minute. Based on research that has been done, the highest aeration rate (air flow) in phosphate removal in cow urine waste is at 1 Lpm air flow with a time of 240 minutes and a phosphate removal efficiency of 84.8822%. Meanwhile, at an air flow of 1.5 Lpm with a time of 60 minutes and a phosphate removal efficiency of 95.4315%. At an air flow of 2 Lpm with a time of 240 minutes, the removal efficiency can only be 34.3421%. The content of phosphate crystals obtained from the XRF results was obtained at 3.173%. At an air flow of 2 Lpm with a time of 240 minutes, the removal efficiency can only be 34.3421%. The content of phosphate crystals obtained from the XRF results was obtained at 3.173%. At an air flow of 2 Lpm with a time of 240 minutes, the removal efficiency can only be 34.3421%. The content of phosphate crystals obtained from the XRF results was obtained at 3.173%.


Aeration; Batch reactor; Cow urine; Phosphate crystals; XRF

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Bintang, Y. K., Chandrasasi, D., & Haribowo, R. (2019). Study of the Effectiveness and Performance of a Wastewater Treatment Plant (WWTP) on a Household-Scale Cattle Farm. Journal of Irrigation Engineering, 10(1), 51–58. doi: 10.21776/ub.pengairan.2019.010.01.5

Edahwati, L., Sutiyono, S., Alvira, F. H., & Anggriawan, R. R. (2021). Struvite Crystallization for Ammonium Removal from Cow Urine with Bulkhead Reactor. Journal of Chemical and Environmental Engineering, 5(1), 41. doi: 10.33795/jtkl.v5i1.202

Nawawi, A. H. S., Rahayub, A., & Mulyaningsih, Y. (2016). Growth, production and quality of mustard greens (Brassica juncea L.) at various concentrations of cow urine and fertilizer doses of N, P and K. Journal of Agronida, 2(1), 10–19.

Safitri, R. I., Harjanti, D. W., & Setiatin, E. T. (2015). Dairy Cow Health valuation. Agripet Journal, 15(2), 117–122. doi: 10.17969/agripet.v15i2.2852

Sumarni, N., Rosliani, R., Basuki, R. S., & Hilman, Y. (2013). Shallot Plant Response to Phosphate Fertilization at Several Soil Fertility Levels (Soil P-Status). Horticulture Journal, 22(2), 130. doi: 10.21082/jhort.v22n2.2012.p130-138

Makhdoomi, D. M., & Gazi, M. A. (2013). Obstructive urolithiasis in ruminants - A review. Veterinary World, 6(4), 233–238. doi: 10.5455/vetworld.2013.233-238

Doino, V., Mozet, K., Muhr, H., & Plasari, E. (2011). Study on struvite precipitation in a mechanically stirring fluidized bed reactor. Chemical Engineering Transactions, 24, 679–684. doi: 10.3303/CET1124114

Ariyanto, E., Ang, H. M., & Sen, T. K. (2014). Impact of various physico-chemical parameters on spontaneous nucleation of struvite (MgNH4PO4.6H2O) formation in a wastewater treatment plant: kinetic and nucleation mechanism. Desalination and Water Treatment, 52(34–36), 6620–6631. doi: 10.1080/19443994.2013.821042

Frawley, P. J., Mitchell, N. A., O’Ciardha, C. T., & Hutton, K. W. (2012). The Effects of Supersaturation, Temperature, Agitation and Seed Surface Area on Secondary Nucleation. Solids State Pharmaceuticals Cluster (SSPC), 1–37.

Ariyanto, E., Niyati, Y., Kharismadewi, D., & Robiah, R. (2020). Kinetics of Crystal Struvite Formation Using Natural Zeolite as an Adsorbent in Aeration Cone Column Crystallizer. Journal of Process Engineering, 14(1), 60–73. doi: 10.22146/jrekpros.49406

Dewi, D. F., & Masduqi, A. (2001). Removal of Phosphate by Crystallization Process of Silica Phosphate Sand Media. Purification, 4(4), 151–156.

Iswarani, W. P. (2018). Phosphate Recovery From Industrial Liquid Waste, 1–147.

Zhao, Q. B., Ma, J., Zeb, I., Yu, L., Chen, S., Zheng, Y. M., & Frear, C. (2015). Ammonia recovery from anaerobic digester effluent through direct aeration. Chemical Engineering Journal, 279, 31–37. doi: 10.1016/j.cej.2015.04.113

Yuniarti, D. P., Komala, R., & Aziz, S. (2019). Effect of Aeration Process on Palm Oil Mill Liquid Waste Processing at PTPN VII Aerobic. Redoks, 4, 7–16.

Ikhlas, N. (2017). Effect of Ph , Molar Ratio , Precipitant Types , and Interfering Ions in Ammonium and Phosphate Recovery on the Effects of Ph , Molar Ratio , Precipitant Types , and Impurities Ions in Recovery of and Phosphate for Pt Petrokimia Gresik Wastewater Using.

Pratiwi, H., Sari, K. P., & Kuntyastuti, H. (2020). Effect of Calcium Fertilization and Varieties on Growth, Yield, and Pest Resistance of Peanut. National Seminar Proceedings, 4(1), 615–621.

Rohmaniyah, L. K., Indradewa, D., & Putra, E. T. S. (2015). Responses of Kale (Ipomea reptans Poir.), Spinach (Amaranthus tricolor L.), and Lettuce (Lactuca sativa L.) to Hydroponic Calcium Enrichment. Vegertalika, 4(2), 63–78. doi: 10.3969/j.issn.1008-0813.2015.03.002

National Standardization Body. (2005). SNI 06-6989.31-2005 Water and waste water – Part 31: Test method for phosphate levels with a spectrophotometer using ascorbic acid. National Standardization Body, 1–10.

Hasibuan, R., Adventi, F., & Persaulian, R. (2019). Effect of Reaction Temperature, Stirring Speed and Reaction Time on Making Solid Soap from Coconut Oil (Cocos nucifera L.). USU Journal of Chemical Engineering, 8(1), 11–17.



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