Biosorption of Astrazone Blue basic dye from an aqueous solution using dried biomass of Baker's yeast

Farah, Joseph Y.; El-Gendy, Nour Sh.; Farahat, Laila A.

doi:10.1016/j.jhazmat.2007.02.053

Cited by 115 publications

(44 citation statements)

References 30 publications

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“…Beyond this there was no change in the dye removal efficiency due to the establishment of equilibrium between the dye molecules and the biomass (Sudha Bai and Abraham 2001). These data support the effectiveness of biomass as a sorbent for the removal of azo dyes from aqueous solution (Farah et al 2007;Hamdaoui et al 2008). …”

Section: Effect Of Biomass Amountsupporting

confidence: 64%

Biosorption of Azo dyes by spent Rhizopus arrhizus biomass

Salvi

Chattopadhyay

2016

Appl Water Sci

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In the present study, spent Rhizopus arrhizus biomass was used for the removal of six azo dyes from aqueous solutions. The dye removal capacity of the biomass was evaluated by conducting batch tests as a function of contact time, biomass dosage, pH and initial dye concentrations. The pseudo-second-order kinetic model fitted well with the experimental data with correlation coefficients greater than 0.999, suggesting that chemisorptions might be the rate limiting step. The equilibrium sorption data showed good fit to the Langmuir isotherm model. Among the six dyes tested, the maximum monolayer adsorption capacity for fast red A and metanil yellow was found to be 108.8 and 128.5 mg/g, respectively. These encouraging results suggest that dead Rhizopus arrhizus biomass could be a potential biomaterial for the removal of azo dyes from aqueous dye solution.

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Section: Effect Of Biomass Amountsupporting

confidence: 64%

Biosorption of Azo dyes by spent Rhizopus arrhizus biomass

Salvi

Chattopadhyay

2016

Appl Water Sci

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“…Langmuir, Freundlich and Temkin models are among the most common isotherms that can be used for the description of solid-liquid sorption systems [11]. Linear regression analyses of these models and a comparison of their correlation coefficient (R 2 ) can be used for selection of the best fit isotherm.…”

Section: Effect Of Adsorbent Dosementioning

confidence: 99%

“…Coagulation and flocculation using polyelectroytes, lime, alum or ferrous salts produce metallic impurities and huge amounts of toxic sludge that pose handling and disposal problems, in addition to material costs [11]. Additionally, membrane processes that operate by transfer of the pollutants to another phase or by concentrating them rather than destroying them have similar limitations [8].…”

Section: Introductionmentioning

confidence: 99%

Adsorption kinetics and isotherm of methylene blue and its removal from aqueous solution using bone charcoal

Ghanizadeh

Asgari

2010

Reac Kinet Mech Cat

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This study aims at describing the removal of methylene blue (MB) from aqueous solution using bone charcoal (BC) as an adsorbent material. The effects of dye concentration, pH, contact time and the adsorbent dose were investigated. The chemical composition and solid structure of BC were analyzed using X-ray diffraction (XRD) and scanning electronic microscopy (SEM). The surface area was measured via the Brunauer-Emmett-Teller (BET) isotherm. The experimental data were analyzed with Langmuir, Freundlich and Temkin isotherm models. The results show that the main component of BC is calcium hydroxylapatite (Ca 5 (PO 4 ) 3 OH). The BET Suface area of BC is approximately 100 m 2 /g. The experimental adsorption isotherm complies with Langmuir equation model (R 2 = 0.99) and the maximum amount of adsorption (q max ) was 5 mg/g. The elevation of BC dose led to a decrease in q max , however, increasing the pH led to the elevation of dye adsorption. The kinetic studies revealed that the adsorption of MB is rapid and complies with the pseudo second-order kinetic (R 2 [ 0.99). Apart from R 2 , four error functions have been used for the validation of data. Analysis of data with Dubinin-Radushkevich isotherm showed that the energy of MB adsorption process onto BC was 2.65 kJ/mol, which implies that the adsorption of MB with BC is a physical adsorption.

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“…Activated sludge of size 0.38 mm with different weights (0.0625, 0.125, 0.25, 0.375, 0.5, 1, 1.5, 2, 2.5, 3, 4 and 5 g) was added gradually. pH was adjusted throughout the runs around 4 which is an optimum value (Farah, et al, 2007;Tunali et al, 2006) since at low pH values the biosorption of metals decreases because of competition for binding sites between ions and protons, while at pH higher than 6, solubility of metal complexes decreases sufficiently allowing precipitation, which may complicate the sorption process and do not bind to the adsorption sites on the surface of the biomass. After 4-7 hrs of agitation which is enough to reach equilibrium (AjayKumar et al, 2009), the solution was filtrated using filter paper type (Wattmann no.…”

Section: Methodsmentioning

confidence: 99%

Competitive Biosorption of Lead Mercury Chromium and Arsenic Ions onto Activated Sludge in Batch Adsorber

Sulaymon

Yousif²,

Al-Faize

2012

AST

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A wide range of batch experiments were carried out for estimation of the key process parameters in competitive biosorption of Pb 2+ , Hg 2+ , Cr 3+ and As 5+ from simulated of wastewater onto dry activated sludge in batch adsorber. Eleven isotherm models were used for single component and five models for multi-component systems. The Langmuir model gave the best fit for the data of single component, while the binary, ternary and quaternary systems were fitted successfully with extended Langmuir model. The biosorption capacity for single metal decreased by 11-51 %, 53-88 % and 79-94 % in the binary, ternary and quaternary systems respectively at the optimum agitation speed 600-800 rpm. An order of metal biosorption capacity onto dried activated sludge was the same in the case of . FT-IR analysis was carried out before and after biosorption to determine which functional groups were responsible for binding the heavy metals. Kinetic study showed that pseudo-second order model was well fitted for all metals ions. R 2 used to enhance the justification analysis for each used model.

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Biosorption of Astrazone Blue basic dye from an aqueous solution using dried biomass of Baker's yeast

Cited by 115 publications

References 30 publications

Biosorption of Azo dyes by spent Rhizopus arrhizus biomass

Biosorption of Azo dyes by spent Rhizopus arrhizus biomass

Adsorption kinetics and isotherm of methylene blue and its removal from aqueous solution using bone charcoal

Competitive Biosorption of Lead Mercury Chromium and Arsenic Ions onto Activated Sludge in Batch Adsorber

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