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International Letters of Chemistry, Physics and Astronomy
Volume 56

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ILCPA > Volume 56 > Potable Water Defluoridation by Lowcost Adsorbents...
Potable Water Defluoridation by Lowcost Adsorbents from <i>Mimosideae </i>Family Fruit Carbons: A Comparative Study
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Potable Water Defluoridation by Lowcost Adsorbents from Mimosideae Family Fruit Carbons: A Comparative Study

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Abstract:

Fluoride present in the form of minerals, which dissolves in ground water and contaminates it. This paper deals with the mimosideae family fruit carbons are used for the removal of fluoride by the process of adsorption. The activated carbon was prepared by carbonisation of Enterolobium saman fruit carbon (ESC) and Prosofis juliflora fruit carbon (PJC) in muffle furnace and treated with 2.5 x 10-1M nitric acid and thermally activated in air oven. The activated carbon was characterized and chemical analysis was done by X-ray fluorescence. Batch experiments were carried out to establish the various parameters. The adsorption was examined by studying the impact of various parameters such as 1) initial concentration (1–7mg/L). Maximum (76 - 82%) removal fluoride concentration up to 5mg/L after this the removal percentage was low. 2) pH (5-9) higher removal percentages in neutral media. 3) Dose (1-7mg/L). After 4mg/L removal adsorption capacity was very low 4) time (10 min – 90 min). Maximum adsorption was observed between 40-60min. and 5) Particle size (45μ-150μ) 45μ sized carbon shows higher adsorption capacity (90.8 %, 80.2% for ESC and PJC). Recycling studies and regeneration of the fluoride loaded carbons were performed with 1.0 x 10-1 NaOH mol/l (72%), Na2CO3, KOH and 1.0 x 10-2 H2SO4 mol/l solutions (68-58%). Adsorption data fits well to Langmuir isotherm and Freundlich isotherms and sorption kinetics Natarajan & Khalaf, intra particle diffusion model follows first order nature of adsorption. All experimental results were compared with the studies of commercial activated carbon (CAC) and comparative results indicate ESC and PJC shows 3 to 4 times higher adsorption capacity than CAC.

Info:

Periodical:
International Letters of Chemistry, Physics and Astronomy (Volume 56)
Pages:
71-81
DOI:
https://doi.org/10.18052/www.scipress.com/ILCPA.56.71
Citation:
M. Kishore "Potable Water Defluoridation by Lowcost Adsorbents from Mimosideae Family Fruit Carbons: A Comparative Study", International Letters of Chemistry, Physics and Astronomy, Vol. 56, pp. 71-81, 2015
Online since:
July 2015
Authors:
Medikondu Kishore
Keywords:
Activated Carbons, Adsorption, Comparative Study, Fluoride, Kinetics, Recycling, Regeneration
Export:
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Distribution:
Open Access

Creative Commons License
This work is licensed under a
Creative Commons Attribution 4.0 International License

References:

[1] APHA., Standard methods for examination of water and waste water., 2000. American Public Health Association, Washington DC, 18th edn. 359-361.

[2] Bhargava, D.S., Killidar, D.J., 2001. Batch studies of water defluoridation using fish bone charcoal. Res. J. Water process. Chem. Engrs. 26, 781-788.

[3] Jamode, A.V., Jamode, V.S., Chandak, B.S., Rao, M., 2004. Evaluation of performance and kinetic parameters for defluoridation using Azadirachta Indica (Neem) leaves as low cost adsorbents. Pollution Research. 23(2), 239-250.

[4] Jamode, A.V., Sapkalm, V.S., Jamode, V.S., 2004. Defluoridation of water using inexpensive adsorbents. J. Indian Inst. Sci., 84, 163-171.

[5] Kannan, N., Meenakshi Sundaram., 2001. Kinetics and mechanism of removal of methylene blue by adsorption – A comparative study. Dyes and Pigments. 51, 25-40.

DOI: https://doi.org/10.1016/s0143-7208(01)00056-0

[6] Kannan, N., Meenakshi Sundaram., 2002. Adsorption of Congo red on various activated carbons – A comparative study. Water Air Soil Poll. 138, 289-305.

[7] Kannan, N., Muthuraman., 2004. Studies on the removal of Xylenol orange and Bromocresol Purple by adsorption on activated char coal. Indian J. Env. Prot. 24 (11), 849 – 855.

[8] Khare, S.K., Singh, A., Srivasthava., 1987. Mixed adsorbents for color removal from aqueous solution. Pertanika. 10 (3), 341 – 347.

[9] Kinniburg, D.G., Syer, J.K., Jockson, M.L., 1975. Specific adsorption of trace elements of calcium and strontium by hydroxides of iron and aluminium. Soil Sci. Soc., Am Proc., 39, 464 – 468.

[10] Prasad, N.V.V.S., Defluoridation of potable water with low cost Adsorbents, Ph.D. dissertation., 2003. Department of Chemistry, Nuzvid, Andhra Pradesh, India, Nagarjuna University.

[11] WHO Guidelines for drinking water quality; Geneva., 1985. Drinking water quality control in small community supplies. 8-121.

[12] Weber, T.W., R.K. Chakravorthi., 1974. Pore and solid diffusion models for fixed bed adsorbents. J. Ind. Chem. Eng. 22, 228-238.

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