Performance, kinetics and equilibrium in biosorption of anionic dye Acid Red 14 by the waste biomass of Saccharomyces cerevisiae as a low-cost biosorbent

Joseph Y. FARAH; Nour Sh. EL-GENDY

Makale detayları

Performance, kinetics and equilibrium in biosorption of anionic dye Acid Red 14 by the waste biomass of Saccharomyces cerevisiae as a low-cost biosorbent

Yazarlar:

Joseph Y. FARAH | Nour Sh. EL-GENDY

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2013 Vol.37 Issue 2, pp.146-161

Belge Tipi:

Makale

Yayın Tarihi:

1/2013

Belge Dili:

Türkçe

Document ID (Org No.):

2000744562

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160

Özet:

 

Equilibrium, kinetics and thermodynamic studies on the removal of Acid  Red 14 (AR14) anionic dye by biosorption onto dried waste biomass of  Saccharomyces cerevisiae have been investigated.  In batch  experiments, the parameters studied included the effect of the dye  concentration, temperature, contact time, adsorbent dosage, agitation  speed, pH, and salt concentration.  The pseudo-first-order and  pseudo-second-order kinetic models were applied to the experimental  kinetic data.  High correlation coefficients with low standard  deviations favor the pseudo-second-order model for the present  systems.  The biosorption process was found to be chemical adsorption  and it has an endothermic nature.  The entropy (D S°),   enthalpy (D H°), and activation energy  (Ea) were estimated as 49.51 J/mol K, 16.36 kJ/mol, and 10.44  kJ/mol, respectively.  The positive values of standard Gibbs free  energy change (D G°) indicate feasible and  nonspontaneous adsorption of AR14 on S. cerevisiae.  Langmuir, Freundlich, Temkin, and Halsey adsorption models were used  for the mathematical description of the batch biosorption equilibrium  data and model constants were evaluated.  The Langmuir model gives the  best agreement with obtained experimental isotherms data.  A design  for a batch adsorption unit using data from isotherm studies was made.

 

Equilibrium, kinetics and thermodynamic studies on the removal of Acid  Red 14 (AR14) anionic dye by biosorption onto dried waste biomass of  Saccharomyces cerevisiae have been investigated.  In batch  experiments, the parameters studied included the effect of the dye  concentration, temperature, contact time, adsorbent dosage, agitation  speed, pH, and salt concentration.  The pseudo-first-order and  pseudo-second-order kinetic models were applied to the experimental  kinetic data.  High correlation coefficients with low standard  deviations favor the pseudo-second-order model for the present  systems.  The biosorption process was found to be chemical adsorption  and it has an endothermic nature.  The entropy (D S°),   enthalpy (D H°), and activation energy  (Ea) were estimated as 49.51 J/mol K, 16.36 kJ/mol, and 10.44  kJ/mol, respectively.  The positive values of standard Gibbs free  energy change (D G°) indicate feasible and  nonspontaneous adsorption of AR14 on S. cerevisiae.  Langmuir, Freundlich, Temkin, and Halsey adsorption models were used  for the mathematical description of the batch biosorption equilibrium  data and model constants were evaluated.  The Langmuir model gives the  best agreement with obtained experimental isotherms data.  A design  for a batch adsorption unit using data from isotherm studies was made.

Makale detayları

Performance, kinetics and equilibrium in biosorption of anionic dye Acid Red 14 by the waste biomass of Saccharomyces cerevisiae as a low-cost biosorbent

Yazarlar: Joseph Y. FARAH | Nour Sh. EL-GENDY

Yayıncı: TUBITAK

Dergi: Turkish Journal of Engineering and Environmental Sciences 2013 Vol.37 Issue 2, pp.146-161

Belge Tipi: Makale

Yayın Tarihi: 1/2013

Belge Dili: Türkçe

Document ID (Org No.): 2000744562

Sıklık: Üç Yıllık

eISSN: 1303-6157

pISSN: 1300-0160

Sayı

Yazarlar:

Joseph Y. FARAH | Nour Sh. EL-GENDY

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2013 Vol.37 Issue 2, pp.146-161

Belge Tipi:

Makale

Yayın Tarihi:

1/2013

Belge Dili:

Türkçe

Document ID (Org No.):

2000744562

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160