Supercritical CO2 Extraction of Ethanol

A. GÜVENÇ; Ü. MEHMETOĞLU; A. ÇALIMLI

Makale detayları

Supercritical CO2 Extraction of Ethanol

Yazarlar:

A. GÜVENÇ | Ü. MEHMETOĞLU | A. ÇALIMLI

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 1999 Vol.23 Issue 3, pp.285-292

Belge Tipi:

Makale

Yayın Tarihi:

2/1999

Belge Dili:

Türkçe

Document ID (Org No.):

2000730406

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

Extraction of ethanol was studied from both synthetic  ethanol solution and fermentation broth using supercritical CO2 in an  extraction apparatus in ranges of 313 to 333 K and 80 to 160  atmospheres, for varying extraction times.  The experimental system  consists mainly of four parts: a CO2 storage system, a high-pressure  liquid pump, an extractor and a product collection unit.  Samples were  analyzed by gas chromatography.  Effects of temperature, pressure,  extraction time, initial ethanol concentration and consecutive solvent  feeding on extraction yield were investigated.  It was found that  increasing the initial ethanol concentration and extraction pressure  and decreasing the extraction temperature increased the extraction  yield.  In addition, it was observed that consecutive solvent feeding  affected the extraction yield positively.  With the Box-Wilson  experimental design method, optimum extraction conditions in a batch  system for 15% (v/v) ethanol solution were found to be 313 K, 133  atmospheres and 30 minutes.  Extraction yields were found to be 5.8%  for one-step and 19.2% for three-step extraction of fermentation  broth.

 

Extraction of ethanol was studied from both synthetic  ethanol solution and fermentation broth using supercritical CO2 in an  extraction apparatus in ranges of 313 to 333 K and 80 to 160  atmospheres, for varying extraction times.  The experimental system  consists mainly of four parts: a CO2 storage system, a high-pressure  liquid pump, an extractor and a product collection unit.  Samples were  analyzed by gas chromatography.  Effects of temperature, pressure,  extraction time, initial ethanol concentration and consecutive solvent  feeding on extraction yield were investigated.  It was found that  increasing the initial ethanol concentration and extraction pressure  and decreasing the extraction temperature increased the extraction  yield.  In addition, it was observed that consecutive solvent feeding  affected the extraction yield positively.  With the Box-Wilson  experimental design method, optimum extraction conditions in a batch  system for 15% (v/v) ethanol solution were found to be 313 K, 133  atmospheres and 30 minutes.  Extraction yields were found to be 5.8%  for one-step and 19.2% for three-step extraction of fermentation  broth.

Makale detayları

Supercritical CO2 Extraction of Ethanol

Yazarlar: A. GÜVENÇ | Ü. MEHMETOĞLU | A. ÇALIMLI

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 1999 Vol.23 Issue 3, pp.285-292

Belge Tipi: Makale

Yayın Tarihi: 2/1999

Belge Dili: Türkçe

Document ID (Org No.): 2000730406

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

A. GÜVENÇ | Ü. MEHMETOĞLU | A. ÇALIMLI

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 1999 Vol.23 Issue 3, pp.285-292

Belge Tipi:

Makale

Yayın Tarihi:

2/1999

Belge Dili:

Türkçe

Document ID (Org No.):

2000730406

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527