Regeneration of granular activated carbon saturated with gaseous toluene by microwave irradiation

Alireza DEHDASHTI; Ali KHAVANIN; Abbas REZAEE; Hassan ASILIAN

Makale detayları

Regeneration of granular activated carbon saturated with gaseous toluene by microwave irradiation

Yazarlar:

Alireza DEHDASHTI | Ali KHAVANIN | Abbas REZAEE | Hassan ASILIAN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2011 Vol.35 Issue 1, pp.49-58

Belge Tipi:

Makale

Yayın Tarihi:

12/2010

Belge Dili:

Türkçe

Document ID (Org No.):

2000744684

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160

Özet:

 

This paper describes laboratory-scale experiments examining  the impact of microwave irradiation on the regeneration of granular  activated carbon (GAC) exposed to toluene vapor.  A stream containing  300 ppm of toluene was passed through the GAC. The saturated adsorbent  was treated by microwave irradiation at a heating frequency of 2450  MHz at various power levels to evaporate the adsorbate.  The  adsorption capacity was evaluated through breakthrough curves and the  residue was analyzed by gas chromatography.  We found that exposing  GAC saturated with toluene under microwave irradiation at 900 W for 15  min could remove the pollutant from the adsorbent effectively.  The  regeneration efficiency was more than 95% after 5 cycles at higher  power levels.  The GAC surface area was increased from 1150 m2/g to  1185 m2/g over regeneration cycles.  We concluded that GAC could be  reused after repeated regeneration cycles under microwave irradiation  while maintaining its original adsorption capacity and physical  properties.

 

This paper describes laboratory-scale experiments examining  the impact of microwave irradiation on the regeneration of granular  activated carbon (GAC) exposed to toluene vapor.  A stream containing  300 ppm of toluene was passed through the GAC. The saturated adsorbent  was treated by microwave irradiation at a heating frequency of 2450  MHz at various power levels to evaporate the adsorbate.  The  adsorption capacity was evaluated through breakthrough curves and the  residue was analyzed by gas chromatography.  We found that exposing  GAC saturated with toluene under microwave irradiation at 900 W for 15  min could remove the pollutant from the adsorbent effectively.  The  regeneration efficiency was more than 95% after 5 cycles at higher  power levels.  The GAC surface area was increased from 1150 m2/g to  1185 m2/g over regeneration cycles.  We concluded that GAC could be  reused after repeated regeneration cycles under microwave irradiation  while maintaining its original adsorption capacity and physical  properties.

Makale detayları

Regeneration of granular activated carbon saturated with gaseous toluene by microwave irradiation

Yazarlar: Alireza DEHDASHTI | Ali KHAVANIN | Abbas REZAEE | Hassan ASILIAN

Yayıncı: TUBITAK

Dergi: Turkish Journal of Engineering and Environmental Sciences 2011 Vol.35 Issue 1, pp.49-58

Belge Tipi: Makale

Yayın Tarihi: 12/2010

Belge Dili: Türkçe

Document ID (Org No.): 2000744684

Sıklık: Üç Yıllık

eISSN: 1303-6157

pISSN: 1300-0160

Sayı

Yazarlar:

Alireza DEHDASHTI | Ali KHAVANIN | Abbas REZAEE | Hassan ASILIAN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2011 Vol.35 Issue 1, pp.49-58

Belge Tipi:

Makale

Yayın Tarihi:

12/2010

Belge Dili:

Türkçe

Document ID (Org No.):

2000744684

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160