Adsorption equilibrium of water vapor on activated carbon and alumina and carbon and alumina impregnated with hygroscopic salt

Ioan SOLOMON; Ana M. RIBEIRO; João C. SANTOS; José M. LOUREIRO

Makale detayları

Adsorption equilibrium of water vapor on activated carbon and alumina and carbon and alumina impregnated with hygroscopic salt

Yazarlar:

Ioan SOLOMON | Ana M. RIBEIRO | João C. SANTOS | José M. LOUREIRO

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2013 Vol.37 Issue 3, pp.358-365

Belge Tipi:

Makale

Yayın Tarihi:

2/2013

Belge Dili:

Türkçe

Document ID (Org No.):

2000727408

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

The adsorption equilibrium of water vapor on different  adsorbent materials has been studied.  Small grains of commercial  activated carbon and alumina, with a diameter of dg = 1.5 \times  10-3 m, were impregnated with a hygroscopic salt (calcium chloride)  to improve the performance of these materials.  The main  characteristics of the new composite materials were obtained by  adsorption/desorption of nitrogen at 77 K and salt distribution on the  adsorbent surface was shown using scanning electron microscopy.  The  adsorption equilibrium isotherms of water vapor were measured by a  gravimetric system at 2 different temperatures in the case of alumina  and impregnated alumina (303 K and 313 K) and 1 temperature (303 K) in  the case of activated and impregnated carbon.  The impregnated  material samples presented the highest adsorption capacity on the  entire pressure range.  The experimental points obtained for the  activated carbon and alumina and the impregnated alumina were fitted  with the Dubinin--Astakhov equation while the Langmuir equation was  used to fit the impregnated carbon data.

 

The adsorption equilibrium of water vapor on different  adsorbent materials has been studied.  Small grains of commercial  activated carbon and alumina, with a diameter of dg = 1.5 \times  10-3 m, were impregnated with a hygroscopic salt (calcium chloride)  to improve the performance of these materials.  The main  characteristics of the new composite materials were obtained by  adsorption/desorption of nitrogen at 77 K and salt distribution on the  adsorbent surface was shown using scanning electron microscopy.  The  adsorption equilibrium isotherms of water vapor were measured by a  gravimetric system at 2 different temperatures in the case of alumina  and impregnated alumina (303 K and 313 K) and 1 temperature (303 K) in  the case of activated and impregnated carbon.  The impregnated  material samples presented the highest adsorption capacity on the  entire pressure range.  The experimental points obtained for the  activated carbon and alumina and the impregnated alumina were fitted  with the Dubinin--Astakhov equation while the Langmuir equation was  used to fit the impregnated carbon data.

Makale detayları

Adsorption equilibrium of water vapor on activated carbon and alumina and carbon and alumina impregnated with hygroscopic salt

Yazarlar: Ioan SOLOMON | Ana M. RIBEIRO | João C. SANTOS | José M. LOUREIRO

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2013 Vol.37 Issue 3, pp.358-365

Belge Tipi: Makale

Yayın Tarihi: 2/2013

Belge Dili: Türkçe

Document ID (Org No.): 2000727408

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Ioan SOLOMON | Ana M. RIBEIRO | João C. SANTOS | José M. LOUREIRO

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2013 Vol.37 Issue 3, pp.358-365

Belge Tipi:

Makale

Yayın Tarihi:

2/2013

Belge Dili:

Türkçe

Document ID (Org No.):

2000727408

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527