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Isotherms, kinetics and thermodynamics for adsorption of pyridine vapors on modified activated carbons

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Abstract

The adsorption isotherms of pyridine have been determined gravimetrically on different samples of granulated, fibrous and spherical activated carbons. Several chemical treatments such as oxidation, degassing and impregnation have been carried out on as-received activated carbon cloth (ACC) so as to modify the surface characteristics of the activated carbon. The porous and chemical structure of modified and unmodified activated carbons has been characterised by XRD, TGA–DTG, SEM and pore size distribution techniques. The adsorption increases on oxidation while decreases on degassing which can be correlated to increase and decrease in the concentration of surface oxygen groups. Loading with Ag+ and Cu2+ increases the adsorption of pyridine compared with the unloaded sample while loading with Cr6+ decreases the adsorption of these vapors. The adsorption–desorption branches of pyridine vapors on metal impregnated do not meet even at zero relative vapor pressure indicating the chemisorption or other specific interactions. The adsorption kinetics data has been examined using the linear driving force and empirical diffusion models. The initial decrease in isosteric enthalpy of adsorption for modified and unmodified ACC indicates the effect of surface heterogeneity and later increase indicates the influence of lateral interactions between adsorbate molecules. The results suggest that the adsorption of pyridine involves the physisorption as well as specific interactions with carbon oxygen functional groups and metal complexes present on the carbon surface.

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References

  • Agency for Toxic Substances and Disease Registry (ATSDR) and National Center for Environmental Health. 2008. Public Health Statement for Pyridine. Sidney Draggan (Topic Editor)

  • Agency for Toxic Substances and Disease Registry (ATSDR): Toxicological Profile for Pyridine. U.S. Department of Health and Human Services, Public Health Service, Atlanta (1992)

    Google Scholar 

  • Alfarrara, A., Frackowiakb, E., Beguin, F.: The HSAB concept as a means to interpret the adsorption of metal ions onto activated carbons. Appl. Surf. Sci. 228, 84–92 (2004)

    Article  Google Scholar 

  • Al-Muhtaseb, S.A., Ritter, J.A.: Roles of surface heterogeneity and lateral interactions on the isosteric heat of adsorption and adsorbed phase heat capacity. J. Phys. Chem. B. 103, 2467–2479 (1999)

    Article  CAS  Google Scholar 

  • Attia, A.A.: Some surface properties of activated carbons prepared by gasification with different gases. Adsorpt. Sci. Technol. 15, 707–715 (1997)

    CAS  Google Scholar 

  • Bakaev, V.A., Bakaeva, T.I., Pantano, C.G.: On inverse adsorption chromatography. 2. Determination of isotherms and heats of adsorption as well as energy distributions of adsorption sites. J. Phys. Chem. C 111, 7473–7486 (2007)

    Article  CAS  Google Scholar 

  • Bansal, R.C., Bhatia, N., Dhami, T.L.: Surface characteristics and surface behavior of polymer carbons IV. Adsorption isotherms of organic vapors. Carbon 18, 137–145 (1980)

    Article  CAS  Google Scholar 

  • Bansal, R.C., Bhatia, N., Dhami, T.L.: Surface characteristics and surface behaviour of polymer carbons III. Surface acidity of polymer carbons. Carbon 16, 65–68 (1978)

    Article  CAS  Google Scholar 

  • Bansal, R.C., Donnet, J.B., Stoeckli, F.: Active Carbon. Marcel Dekker, New York (1988)

    Google Scholar 

  • Carrott, P.J.M., Nabais, J.M.V., Ribeiro Carrott, M.M.L., Pajares, J.A.: Preparation of activated carbon fibres from acrylic textile fibres. Carbon 39, 1543–1555 (2001)

    Article  CAS  Google Scholar 

  • Chagger, H.K., Ndaji, F.E., Sykes, M.L., Thomas, K.M.: Kinetics of adsorption and diffusional characteristics of carbon molecular sieves. Carbon 33, 1405–1411 (1995)

    Article  CAS  Google Scholar 

  • Chen, H.K., Miura, K., Li, W., Li, B.: Pyridine adsorption isotherms of several coals and factors influencing the coal adsorption behavior. Ranliao Huaxue Xuebao 32, 135–139 (2004)

    CAS  Google Scholar 

  • El-Nabarawy, T.H., Petro, N.S.H., Abdel-Aziz, S.: Adsorption characteristics of coal based activated carbons.II. Adsorption of water vapors, pyridine, benzene. Adsorpt. Sci. Technol. 15, 47–58 (1997)

    CAS  Google Scholar 

  • Foley, N.J., Thomas, K.M., Forshaw, P.L., Stanton, D., Norman, P.R.: Kinetics of water vapor adsorption on activated carbon. Langmuir 13, 2083–2089 (1997)

    Article  CAS  Google Scholar 

  • LaCava, A.I., Koss, V.A., Wickens, D.: Non-Fickian adsorption rate behaviour of some carbon molecular sieves. I. Slit-potential rate model. Gas Sep. Purif. 3, 180–186 (1989)

    Article  CAS  Google Scholar 

  • Muminov, S.Z.: Adsorption energy of microporous clay adsorbents in relation to polar adsorbates. Uzb. Khim. Zh. 1, 76–81 (2003)

    Google Scholar 

  • Muminov, S.Z., Gulyamova, D.B.: Peculiarities of adsorption of some polar substances from vapor phase on a microporous clay adsorbent. Colloid J. 66, 245–248 (2004)

    Article  CAS  Google Scholar 

  • Muminov, S.Z., Gulyamova, D.B., Agzamkhodzhaev, A.A.: Adsorption of thiophene vapor on sodium and polyhydroxoaluminum montmorillonites. Russ. J. Appl. Chem. 77, 376–379 (2004)

    Article  CAS  Google Scholar 

  • Pearson, R.G.: Hard and soft acids and bases. J. Am. Chem. Soc. 85, 3533–3539 (1963)

    Article  CAS  Google Scholar 

  • Puri, B.R., Bansal, R.C.: Studies in surface chemistry of carbon blacks. I. High temperature evacuations. Carbon 1, 451–456 (1964)

    Article  CAS  Google Scholar 

  • Puri, B.R., Sharma, S.K.: Surface acidity of carbons. Indian J. Chem. 8, 1119–1122 (1970)

    CAS  Google Scholar 

  • Short, M.A., Walker Jr, P.L.: Measurement of interlayer spacing and crystal sizes in turbostratic carbons. Carbon 1, 3–9 (1963)

    Article  CAS  Google Scholar 

  • Yu, M., Li, Z., Xia, Q., Xi, H.: Effects of different metal ions loaded onto activated carbon on adsorption of benzothiophene. Huagong Xuebao 57, 1943–1948 (2006)

    CAS  Google Scholar 

  • Yuzak, Y., Fletcher, A.J., Thomas, K.M.: The compensation effect for the kinetics of adsorption/desorption of gases/vapours on microporous carbons, Carbon’ 01, An International Conference on Carbon, Lexington, KY, United States, 14–19 July (2001) 1362–1363

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Acknowledgments

The authors acknowledge their thanks to Defence Research Development Organization, Delhi, CSIR and AICTE for the award of the research Grants. The authors are also thankful to HEG Ltd., Bhopal, India for the supply of ACC and SAC, the Ashland Petroleum Company, USA for the supply of ACF-307 and Norit N.V. Netherlands for the supply of GAC-R and GAC-1240.

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Authors and Affiliations

  1. Department of Chemistry, Panjab University, Chandigarh, India

    Rashmi Dhawan & K. K. Bhasin

  2. Dr. S.S. Bhatnagar University Institute of Chemical Engineering & Technology, Panjab University, Chandigarh, India

    Meenakshi Goyal

  3. Sri Guru Teg Bahadur Khalsa College , Anandpur Sahib, 140118, India

    Rashmi Dhawan

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  1. Rashmi Dhawan
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  2. K. K. Bhasin
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  3. Meenakshi Goyal
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Correspondence to Rashmi Dhawan.

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Dhawan, R., Bhasin, K.K. & Goyal, M. Isotherms, kinetics and thermodynamics for adsorption of pyridine vapors on modified activated carbons. Adsorption 21, 37–52 (2015). https://doi.org/10.1007/s10450-015-9648-x

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  • DOI: https://doi.org/10.1007/s10450-015-9648-x

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