The Adsorption Efficiency of Modified Fly Ash for the Removal of Iron and Zinc Ions
Modern Chemistry
Volume 8, Issue 1, March 2020, Pages: 12-17
Received: Oct. 21, 2019; Accepted: Nov. 14, 2019; Published: Apr. 13, 2020
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Mohammed Sulieman Ali Eltoum, Chemistry Department, Sudan University of Science and Technology, Khartoum, Sudan
Sahl Yasin, Sudanese Chemical Society, Khartoum, Sudan
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The aim of study was to reduce chemical contaminant from water and wastewater by adopting low-cost adsorption process over modified fly ash, which prepared easily by two methods, alkaline added under hydrothermal conditions, some physio-chemical technique used to characterize the modified fly ash as XRF, XRD, BET technique and scanning electron microscopy SEM. The result showed that the modified fly ash has crystal structure hexagonal and it attributed to zeolite A, the regarding of crystal structure, specific surface area and external morphology examined by SEM, the estimation of specific surface area affiliated to type (IIB) isotherm which is similar to non-porous or macroporous materials, finding results showed that the modified fly ash described better to both Freundlich and Langmuir model isotherm for removal mechanism, the maximum adsorption capacity qmax for Zn2+ an Fe2+ is 114.2 and 196.7 mg/L respectively, furthermore, iron and zinc ions removed well by direct method SZ1 due to the crystal lattice structure, big surface area and pore size 49.317 and 38.813 m2/g respectively, finally modified fly ash can be used as low-cost adsorption material due to the nature of ion- exchange and performance in adsorption according to their big surface area.
Fly Ash, Modified Fly Ash, Adsorption, Isotherm, Marco-porous
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Mohammed Sulieman Ali Eltoum, Sahl Yasin, The Adsorption Efficiency of Modified Fly Ash for the Removal of Iron and Zinc Ions, Modern Chemistry. Vol. 8, No. 1, 2020, pp. 12-17. doi: 10.11648/
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X. Yin, J. Zhang, and X. Wang, “Sequential injection analysis system for the determination of arsenic by hydride generation atomic absorption spectrometry,” Fenxi Huaxue, vol. 32, no. 10, pp. 1365–1367, 2004.
R. S. Blissett and N. A. Rowson, “A review of the multi-component utilisation of coal fly ash,” Fuel, vol. 97, pp. 1–23, 2012.
Z. T. Ahmed and D. W. Hand, “Direct adsorption isotherms of AEAs and fly ash:  ??-olefin sulfonate and combination admixtures,” ACS Sustain. Chem. Eng., vol. 3, no. 2, pp. 216–223, 2015.
A. A. Ramezanianpour, Fly ash, vol. 39, no. 7. Heidelberg, 2005.
N. Koshy and D. N. Singh, “Fly ash zeolites for water treatment applications,” Journal of Environmental Chemical Engineering, vol. 4, no. 2. Elsevier Ltd, pp. 1460–1472, 01-Jun-2016.
C. Y. Pathak, D. Roy, and S. Das, “Utilization of fly ash byproduct in synthetic zeolites,” World J. Civ. Eng. Constr. Technol., vol. 1, no. 1, pp. 2–11, 2014.
G. Itskos, A. Koutsianos, N. Koukouzas, and C. Vasilatos, “Zeolite development from fly ash and utilization in lignite mine-water treatment,” Int. J. Miner. Process., vol. 139, pp. 43–50, Jun. 2015.
Z. Liu, S. Li, L. Li, J. Wang, Y. Zhou, and D. Wang, “One-step high efficiency crystallization of zeolite A from ultra-fine circulating fluidized bed fly ash by hydrothermal synthesis method,” Fuel, vol. 257, p. 116043, Dec. 2019.
M. Liu, L. A. Hou, B. Xi, Y. Zhao, and X. Xia, “Synthesis, characterization, and mercury adsorption properties of hybrid mesoporous aluminosilicate sieve prepared with fly ash,” Appl. Surf. Sci., vol. 273, pp. 706–716, 2013.
P. Whittaker, “Iron and zinc interactions in humans,” in American Journal of Clinical Nutrition, 1998, vol. 68, no. 2 SUPPL., pp. 442–446.
H. Figueiredo and C. Quintelas, “Tailored zeolites for the removal of metal oxyanions: Overcoming intrinsic limitations of zeolites,” J. Hazard. Mater., vol. 274, pp. 287–299, 2014.
M. Mahurpawar, “Effects of heavy metals on human health,” Int. J. Res., vol. 2350, no. 0530, pp. 1–7, 2015.
M. S. Suliman, S. I. B. Yasin, and M. S. A. Eltoum, “Petroleum Coke Carbon, Characterization and Environmental Application,” J. Middle East North Africa Sci., vol. 2, no. 4, pp. 10–14, 2016.
D. Ruen-ngam, D. Rungsuk, R. Apiratikul, and P. Pavasant, “Zeolite formation from coal fly ash and its adsorption potential,” J. Air Waste Manag. Assoc., vol. 59, no. 10, pp. 1140–1147, 2009.
A. H. Englert and J. Rubio, “Characterization and environmental application of a Chilean natural zeolite,” vol. 75, pp. 21–29, 2005.
H. Asnaoui, A. Laaziri, and M. Khalis, “Study of the kinetics and the adsorption isotherm of cadmium (II) from aqueous solution using green algae (Ulva lactuca) biomass,” Water Sci. Technol., vol. 72, no. 9, pp. 1505–1515, 2015.
E. Ajenifuja, J. A. Ajao, and E. O. B. Ajayi, “Equilibrium adsorption isotherm studies of Cu (II) and Co (II) in high concentration aqueous solutions on Ag-TiO2-modified kaolinite ceramic adsorbents,” Appl. Water Sci., vol. 7, no. 5, pp. 2279–2286, 2017.
N. Ayawei, A. N. Ebelegi, and D. Wankasi, “Modelling and Interpretation of Adsorption Isotherms,” J. Chem., vol. 2017, 2017.
M. Wdowin, “Synthesis and characterization of zeolites prepared from industrial fly ash,” Env. Monit Assess, no. 186, pp. 5721–5729, 2014.
A. Julbe, M. Drobek, I. Européen, and U. De, “Encyclopedia of Membranes,” Encycl. Membr., 2016.
K. S. W. SING, D. H. EVERETT, R. A. W. HAUL., J. ROUQUEROL., and T. SIEMIENIEWSKA., “REPORTING PHYSISORPTION DATA FOR GAS/SOLID SYSTEMS with Special Reference to the Determination of Surface Area and Porosity,” Pure App!. Chem, vol. 57, no. 4, pp. 603–619, 1985.
S. Wacharasindhu, S. Likitmaskul, L. Punnakanta, K. Chaichanwatanakul, K. Angsusingha, and C. Tuchinda, “Serum IGF-I and IGFBP-3 Levels for Normal Thai Children and their Usefulness in Clinical Practice,” J. Med. Assoc. Thail., vol. 81, no. 6, pp. 420–430, 1998.
K. Pyrgaki, P. Messini, and V. Zotiadis, “Adsorption of Pb and Cu from Aqueous Solutions by Raw and Heat-Treated Attapulgite Clay,” Geosciences, vol. 8, no. 5, p. 157, 2018.
K. Parida, K. G. Mishra, and S. K. Dash, “Adsorption of toxic metal ion Cr (VI) from aqueous state by TiO2-MCM-41: Equilibrium and kinetic studies,” J. Hazard. Mater., vol. 241–242, pp. 395–403, 2012.
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