Study on Modified Zeolite Synthesized from Coal Fly Ash in Adsorption and Desorption of Ammonia Nitrogen

Abstract:

The “Twelfth Five-Year” plan of China starts at the emission reduction task in controlling the total amount of ammonia nitrogen. Therefore, the method of how to remove ammonia nitrogen quickly and effectively will be the key point of wastewater treatment. In the current paper, One zeolite synthesized from coal fly ash (P-type zeolite, ZP) was prepared and then modified using lanthanum. The structure of the zeolite was characterized by means of SEM, X-ray, TG-DSC, and the like. The characteristics of ZP and lanthanum-modified ZP (LaZP) in the adsorption and desorption of ammonia nitrogen were simultaneously studied, wherein the results show that ZP and LaZP are featured with obvious crystal characteristics, lots of gap structures, and a strong characteristic peak of P-type zeolite shown in the XRD atlas. For the LaZP, the adsorption equilibrium can be carried out in 30 min. The data for the adsorption dynamics to the ammonia nitrogen are in line with the pseudo-second order kinetics equation, and the adsorption isotherme is well fitted to the Langmuir model. The regeneration test shows that the desorption rate of ammonia nitrogen is proportional to the concentration of NaCl when the pH is about 7. The desorption rate of LaZP to the ammonia nitrogen can reach 90% when the concentration of NaCl is 0.4 mol/l, and the desorption rate of ZP is 70%. Compared with ZP, the desorption speed of the LaZP is quicker, the adsorption equilibrium can be carried out in 6 h, and the adsorption equilibrium of ZP can be slowly carried out in 10 h. Moreover, the adsorption and desorption properties of the LaZP are greatly improved.

• Periodical: Advanced Materials Research (Volumes 573-574)
• Pages: 99-109
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.573-574.99
• Online since: October 2012
• Authors: Qi Jin Luo, Jian Yu Chen, Man Zhu, Zhi Hua Pang, Jun Luo, Zhen Xing Wang
• Keywords: Adsorption-Desorption, Coal Fly Ash, Lanthanum Modification, Zeolite

References

[1] Duan, J. M, Lin, J. M, Fang, H. D, et al. Adsorption characteristic of modified steel-making slag for simultaneous removal of phosphorus and ammonium nitrogen from aqueous solution. Chinese Journal of Environmental Engineering, Vol. 6, No. 1(2012).

[2] Fu, K., Xia, Q. B, Li, Z., et al. Research of Ammonia Adsorption With Maifan Ston. Industial Safety and Environmental Protection , Vol. 37, No. 4(2011), pp.3-6.

[3] A R Rahmani, MT Samadi and H R Ehsani. Investigation of clinoptilolitenatural zeolite regeneration by air stripping followed by ion exchange forremoval of ammonium from aqueous solutions Iran. J Environ HealthSci Eng, Vol. 3, No. 6(2009).

[4] Wang, F. L. ，Alva A K. Ammonium adsorption and desorption in sandy soils. Science Society of America Journal, Vol. 64, No. 5(2000), pp.1669-1674.

DOI: 10.2136/sssaj2000.6451669x

[5] Wang, Z. L, Chen, Y.F., Zhou, Q., et al. Adsorption characteristic of bamboo charcoal forammonia-nitrogen in water solution. Industial Water & Wastwater, Vol. 40, No. 4(2009), pp.70-73.

[6] Yang, H., Ning, H. L., Pei, L, et al. Properties study on ammonia nitrogen adsorption of attapulgite. Chinese Journal of Environmental Engineer, Vol. 5, No. 2(2011), pp.343-346.

[7] Holler H, Wirsching U. Zeolite for mati on from fly ash. Fortschritte derm ineralogie, Vol. 63, No. 1(1985), pp.21-27.

[8] Murayama N, Yamamoto H and Shibata J. Mechanism of zeolite synthesis from coal fly ash by alkai hydrothermal reaction. Int.J. Miner. Process, Vol. 64, No. 1(2002), p.1~7.

DOI: 10.1016/s0301-7516(01)00046-1

[9] Inada M, Tsujimoto H., Eguchi Y, et al. Microwave-assisted zeolite synthesis from coal fly ash in hydrothermal process. Fuel, Vol. 12-13, No. 84(2005), pp.1482-1486.

DOI: 10.1016/j.fuel.2005.02.002

[10] Claudia Belviso, FrancescoCavalcante, AntonioLettino et al. Effects of ultrasonic treatment on zeolite synthesized from coal fly ash. Ultrasonics Sonochemistry , Vol. 18(2011), p.661–668.

DOI: 10.1016/j.ultsonch.2010.08.011

[11] X. Querol, N. Moreno, J.C. Umana, et al. Synthesis of zeolites from coal fly ash: an overview. International Jouranal of coal Geology, Vol. 50 (2002), pp.413-423.

DOI: 10.1016/s0166-5162(02)00124-6

[12] NikolaosKoukouzasa, CharalamposVasilatosb, GrigoriosItskos, et al. Removal of heavy metals from waste water using CFB-coal fly ash zeolitic materials. Journal of Hazardous Materials, Vol. 173(2010), p.581–588.

DOI: 10.1016/j.jhazmat.2009.08.126

[13] Jiang, Z., Ning, P., Pu, H. P., et al. Manufacture of Rare Earth Absorbent and Research on Removing Ammonia Nitrogen from Water. Journal of Wuhan University of Technology, Vol. 6, No. 26(2004), pp.18-22.

[14] Mei, X.Y., Pu, H. P., Ma, W.H., et al. Research on Removal of Cr6+ with Inorgano-Organo-Bentonites Modified by La&Ti. Non-Metallic Mines, Vol. 2, No. 31(2008), pp.8-11.

[15] Wu, D. Y., Zhang, B. H., Yan, L., et al. Effect of some additives on the formation of zeolite from coal fly ash. Int J Miner Proc, Vol. 2-4, No. 80(2006), pp.266-272.

DOI: 10.1016/j.minpro.2006.05.005

[16] Zhang, X. F., Guo, J.W., Jia, X.L., et al. Recent Progress in the Synthesis of Zeolite from Fly Ash. Bulletin of the Chinese Ceramic Society, Vol. 1, No. 30(2011), pp.120-124.

[17] Tian, F. P., Wu, W.C., Jiang, Z.X., et al. The study of thiophene adsorption onto La(III)-exchanged zeolite NaY by FT-IR spectroscopy. Journal of Colloid and Interface Science, Vol. 301 (2006), p.395–401.

DOI: 10.1016/j.jcis.2006.05.017

[18] Ning, P., Bart Hans-Jorg, Li, B., et al. Phosphate removal from wastewater by model-La(III) zeolite adsorbents. Journal of Environmental Sciences , Vol. 20(2008), p.670–674.

DOI: 10.1016/s1001-0742(08)62111-7

[19] Alexander Guzman, Iker Zuazo, Andreas Feller, et al. Influence of the activation temperature on the physicochemical properties and catalytic activity of La-X zeolites for isobutane/cis-2-butene alkylation. Microporous and Mesoporous Materials, Vol. 97(2006).

DOI: 10.1016/j.micromeso.2006.08.006

[20] Ning, P., BART Hans-Jorg, Li, B., et al. Phosphate removal from wastewater by model-La(III) zeolite adsorbents. Journal of Environmental Sciences, Vol. 20(2008), p.670–674.

DOI: 10.1016/s1001-0742(08)62111-7

[21] Lian, F., Liu, C., Li, G. G., et al. Adsorption and Desorption of Dyes by Waste-Polymer-Derived Activated Carbons. Environmental Science, Vol. 1, No. 33(2012), pp.147-155.

[22] Li, R. Q., Li, S.H. and Wang, J. D. Zeolite activation and ammonia-nitrogen removal from wastewater by adsorption on activated zeolite. Acta Scientiae Circumstantia, Vol. 8, No. 28(2008), pp.1618-1624.

[23] Jia, C.J., Patricia B., Pascale M. Comparison of conventional and solid-state ion exchange ocedures for the incorporation of lanthanum in H-beta zeolite. Microporous and Mesoporous Materials, Vol. 24 (1998), p.69–82.

DOI: 10.1016/s1387-1811(98)00144-9

[24] Zeng, Z. Z., Wang, J. B., Guo, H.L., et al. Adsorption and kinetics of ammonia-nitrogen from leachate onto fly ash. China Environmental Science, Vol. 5, No. 30(2010), pp.644-649.

[25] Chang, M. Y., Juang, R. S. Adsorption of tannic acid, humic acid and dyes from water using the composite of chitosan and activated clay. Journal of Colloid and Interface Science, Vol. 1, No. 278(2004), pp.18-25.

DOI: 10.1016/j.jcis.2004.05.029