Alkali Activation of Coal Fly Ash: Characterization and Potential for Oil Remediation

Ayu Fahimah Diniyah Wathi, Aisyiah Restutiningsih Putri Utami, Teguh Pambudi, Meiyanti Ratna Kumalasari, M. Sulthon Nurharman Syah Putra, Sri Setyaningsih, Dola Suciana

Abstract


Fly ash, a byproduct of coal combustion, has attracted increasing attention as a low-cost adsorbent for environmental remediation. This study aims to investigate the effect of alkali activation on the structural and surface characteristics of fly ash and to evaluate its potential for oil remediation. In this work, fly ash was activated using sodium hydroxide (NaOH) followed by thermal treatment at 250 C. The structural and surface properties of the materials before and after activation were characterized using Fourier Transform Infrared spectroscopy (FTIR), X-ray Diffraction (XRD), and Brunauer–Emmett–Teller (BET) surface area analysis. FTIR analysis indicated changes in the surface functional groups of fly ash after alkali activation, while hydrocarbon-related bands observed after contact with used oil suggested the presence of oil-derived compounds on the adsorbent surface. XRD results showed that the activated fly ash retained a predominantly amorphous phase with slight changes in crystallinity. BET analysis revealed only a slight increase in specific surface area from 22.71 to 23.53 m2g-1, accompanied by a small increase in average pore diameter from 5.49 to 5.77 nm, indicating limited modification of the mesoporous structure after alkali activation. These structural modifications suggest that alkali activation alters the surface characteristics of fly ash and may support its potential use in oil remediation. The findings indicate that alkali-activated fly ash has potential as an economical and sustainable adsorbent for environmental remediation applications, particularly for the treatment of oil-contaminated waste.

Keywords: alkaline activation, adsorbent, BET, FTIR, XRD


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References


G. J. Kusuma, R. Sayoga Gautama, S. Dwiki, A. Badhurahman, and M. S. Abfertiawan, “Performance of Fly Ash and Bottom Ash as Coal Combustion Product to Prevent Acid Mine Drainage Generation: Preliminary Result on a Pilot Scaleâ€.

M. Soleh, Y. Hidayat, and Z. Abidin, “Development of Coal Fired Power Plant Aging Fly Ash and Bottom Ash Utilization,†2019 International Conference on Technologies and Policies in Electric Power and Energy, TPEPE 2019, Oct. 2019, doi: 10.1109/IEEECONF48524.2019.9102477.

Y. Chen, Y. Fan, Y. Huang, X. Liao, W. Xu, and T. Zhang, “A comprehensive review of toxicity of coal fly ash and its leachate in the ecosystem,†Ecotoxicol Environ Saf, vol. 269, p. 115905, Jan. 2024, doi: 10.1016/J.ECOENV.2023.115905.

T. P. Adinugroho et al., “Life cycle assessment of fly ash bottom ash in coal power plants: A review,†IOP Conf Ser Earth Environ Sci, vol. 1108, no. 1, p. 012035, Nov. 2022, doi: 10.1088/1755-1315/1108/1/012035.

C. Luo et al., “Soil contamination caused by fly ash from coal-fired thermal power plants in India: Spatiotemporal distribution and elemental leaching potential,†Applied Geochemistry, vol. 170, p. 106080, Sep. 2024, doi: 10.1016/J.APGEOCHEM.2024.106080.

K. M. Zierold and C. Odoh, “A review on fly ash from coal-fired power plants: Chemical composition, regulations, and health evidence,†Rev Environ Health, vol. 35, no. 4, pp. 401–418, Dec. 2020, doi: 10.1515/REVEH-2019-0039/XML.

H. H. T. Nguyen et al., “Emerging waste-to-wealth applications of fly ash for environmental remediation: A review,†Environ Res, vol. 227, p. 115800, Jun. 2023, doi: 10.1016/J.ENVRES.2023.115800.

Mekkadinah, S. Suwarno, I. Garniwa, and H. Agustina, “Review Regulation on the Determination of Fly Ash and Bottom Ash from Coal Fired Power Plant as Hazardous Waste in Effort to Increase Utilization in Indonesia,†in IOP Conference Series: Earth and Environmental Science, Institute of Physics Publishing, Jul. 2020. doi: 10.1088/1755-1315/519/1/012051.

F. Anggara et al., “Understanding FABA composition in coal-fired power plants: Impact of operating conditions and combustion efficiency on ash characteristics – A case study in PT Bukit Asam, South Sumatra, Indonesia,†Results in Engineering, vol. 23, p. 102590, Sep. 2024, doi: 10.1016/J.RINENG.2024.102590.

S. M. A, A. Nadar, D. Paswan, M. Shaikh, and S. D. Maniyar, “Heavy Metals in Fly Ash; Its Impact on Human Health and Environment,†2017. [Online]. Available: https://www.researchgate.net/publication/336650822

M. E. Munawer, “Human health and environmental impacts of coal combustion and post-combustion wastes,†Journal of Sustainable Mining, vol. 17, no. 2, pp. 87–96, Jan. 2018, doi: 10.1016/J.JSM.2017.12.007.

H. Aslam, A. Hashmi, I. Khan, S. Ahmad, and R. Umar, “Deciphering Effects of Coal Fly Ash on Hydrochemistry and Heavy Metal(loid)s Occurrence in Surface and Groundwater: Implications for Environmental Impacts and Management,†Water Air Soil Pollut, vol. 235, no. 10, pp. 1–25, Oct. 2024, doi: 10.1007/S11270-024-07448-Z/METRICS.

U. O. Aigbe, K. E. Ukhurebor, R. B. Onyancha, O. A. Osibote, H. Darmokoesoemo, and H. S. Kusuma, “Fly ash-based adsorbent for adsorption of heavy metals and dyes from aqueous solution: a review,†Journal of Materials Research and Technology, vol. 14, pp. 2751–2774, Sep. 2021, doi: 10.1016/J.JMRT.2021.07.140.

M. Ahmaruzzaman, “A review on the utilization of fly ash,†Prog Energy Combust Sci, vol. 36, no. 3, pp. 327–363, Jun. 2010, doi: 10.1016/J.PECS.2009.11.003.

S. Gorai, “Utilization of Fly ash for sustainable environment management,†J. Mater. Environ. Sci, vol. 9, no. 2, pp. 385–393, 2018, doi: 10.26872/jmes.2018.9.2.42.

X. Ren et al., “Synthesis of Zeolites from Coal Fly Ash for the Removal of Harmful Gaseous Pollutants: A Review,†Aerosol Air Qual Res, vol. 20, no. 5, pp. 1127–1144, May 2020, doi: 10.4209/AAQR.2019.12.0651.

F. S. Ahmed, M. A. Alsaffar, and A. A. J. AbdulRazak, “One-step synthesis of magnetic fly ash composites for methylene blue removal: batch and column study,†Environmental Science and Pollution Research, vol. 30, no. 60, pp. 124748–124766, Dec. 2023, doi: 10.1007/S11356-022-23491-X/METRICS.

Z. Aslam, “Carbonaceous adsorbent from waste oil fly ash: surface treatments and hydrogen sulfide adsorption potential,†Chemical Papers, vol. 76, no. 8, pp. 5145–5158, Aug. 2022, doi: 10.1007/S11696-022-02182-4.

A. A. Greish et al., “Efficient carbon adsorbent for hydrogen sulfide produced from sugar cane bagasse,†Mendeleev Communications, vol. 32, no. 6, pp. 828–830, Nov. 2022, doi: 10.1016/J.MENCOM.2022.11.040.

W. Chang, D. Zhao, J. Lian, S. Han, and Y. Xue, “Regeneration of waste rolling oil via inorganic flocculation-adsorption process,†Pet Sci Technol, vol. 37, no. 7, pp. 837–844, Apr. 2019, doi: 10.1080/10916466.2019.1566258.

S. Wang and H. Wu, “Environmental-benign utilisation of fly ash as low-cost adsorbents,†J Hazard Mater, vol. 136, no. 3, pp. 482–501, Aug. 2006, doi: 10.1016/J.JHAZMAT.2006.01.067.

M. Visa, C. Bogatu, and A. Duta, “Simultaneous adsorption of dyes and heavy metals from multicomponent solutions using fly ash,†Appl Surf Sci, vol. 256, no. 17, pp. 5486–5491, Jun. 2010, doi: 10.1016/J.APSUSC.2009.12.145.

P. Primerano and M. F. Milazzo, “Recycling of oil fly ash in the adsorption of dyes from industrial wastewater,†Ecological Chemistry and Engineering S, vol. 27, no. 2, pp. 257–270, Jun. 2020, doi: 10.2478/ECES-2020-0012.

I. Purnamasari and E. Supraptiah, “Adsorption Kinetics of Fe and Mn with Using Fly Ash from PT Semen Baturaja in Acid Mine Drainage,†Indonesian Journal of Environmental Management and Sustainability, vol. 1, no. 1, pp. 11–14, Nov. 2017, doi: 10.26554/IJEMS.2017.1.1.11-14.

X. Zhao et al., “Effect and mechanisms of synthesis conditions on the cadmium adsorption capacity of modified fly ash,†Ecotoxicol Environ Saf, vol. 223, p. 112550, Oct. 2021, doi: 10.1016/J.ECOENV.2021.112550.

M. Visa, L. Isac, and A. Duta, “Fly ash adsorbents for multi-cation wastewater treatment,†Appl Surf Sci, vol. 258, no. 17, pp. 6345–6352, Jun. 2012, doi: 10.1016/J.APSUSC.2012.03.035.

X. Gao, Y. Dai, Y. Zhang, X. Zhai, and F. Fu, “Effective dye removal from waste water using a novel low-cost NaOH-modified fly ash,†Clays Clay Miner, vol. 64, no. 6, pp. 695–705, Dec. 2016, doi: 10.1346/CCMN.2016.064028/METRICS.

Jumaeri, Sutarno, Eko Sri Kunarti, and Sri Juari Santosa, “PENGARUH KONSENTRASI NaOH DAN TEMPERATUR PADA SINTESIS ZEOLIT DARI ABU LAYANG SECARA ALKALI HIDROTERMAL,†2009.

M. Thommes et al., “Physisorption of gases, with special reference to the evaluation of surface area and pore size distribution (IUPAC Technical Report),†Pure and Applied Chemistry, vol. 87, no. 9–10, pp. 1051–1069, Oct. 2015, doi: 10.1515/PAC-2014-1117/MACHINEREADABLECITATION/RIS.

K. Singh, A. K. Singh, A. Kumar, and A. Agarwal, “Fly ash and TiO2 modified fly ash as adsorbing materials for removal of Cd(II) and Pb(II) from aqueous solutions,†Journal of Hazardous Materials Advances, vol. 10, p. 100256, May 2023, doi: 10.1016/J.HAZADV.2023.100256.




DOI: http://dx.doi.org/10.24845/ijfac.v11.i2.146

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