pH EFFECT ON THE BIOSORPION OF Cu2+ FROM AQUEOUS SOLUTION BY SACCHAROMYCES CEREVISIAE

2003 ◽  
Vol 2 (3) ◽  
pp. 243-254
Author(s):  
Loredana Brinza ◽  
Maria Gavrilescu
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Aqueous Solution ◽  
Ph Effect

Identification of N1–Glycolylbiuret in the Gamma Radiolysis of Aerated Aqueous Solution of Cytosine. Influence of the pH

1984 ◽  
Vol 39 (1-2) ◽  
pp. 64-67 ◽  
Author(s):  
Michel Polverelli ◽  
Jacques Ulrich ◽  
Robert Teoule
Keyword(s):  
Aqueous Solution ◽  
Ph Effect ◽  
Gamma Radiolysis ◽  
G Value

Abstract N1 Glycolylbiuret, pH-Effect N1 glycolylbiuret has been identified as a radiation product of cytosine in aerated aqueous solution at pH 4.5. When varying the pH of the solution before irradiation from acidic values towards neutral ones. G value of N1 glycolylbiuret reached a maximum at pH 4.5.

Fermentative degradation of Patulin by Saccharomyces cerevisiae in aqueous solution

LWT ◽  
2018 ◽  
Vol 97 ◽  
pp. 427-433 ◽  
Author(s):  
Min Li ◽  
Weizhu Chen ◽  
Zhuo Zhang ◽  
Zhiwei Zhang ◽  
Bangzhu Peng
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Aqueous Solution

scholarly journals Removal of Erichrome Black T from Synthetic Wastewater by Cotton Waste

2011 ◽  
Vol 8 (2) ◽  
pp. 803-808 ◽  
Author(s):  
U. V. Ladhe ◽  
S. K. Wankhede ◽  
V. T. Patil ◽  
P. R. Patil
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Chemical Kinetics ◽  
Contact Time ◽  
Ph Effect ◽  
Physicochemical Characterization ◽  
Synthetic Wastewater ◽  
Batch Adsorption ◽  
Experimental Parameters ◽  
Cotton Waste

Adsorptions of Erichrome Black T dye in aqueous solution on cotton stem activated carbon have been studied as a function of contact time, concentration and pH. Effect of various experimental parameters has been investigated at 39±1°C under batch adsorption technique. The result shows that cotton stem activated carbon adsorbs dye to a sufficient extent. The physicochemical characterization and chemical kinetics was also examined for the same dye. The overall result shows that it can be fruitfully used for the removal of dye from wastewaters.

scholarly journals Adsorption of As(V) from Aqueous Solution on Chitosan-Modified Diatomite

2020 ◽  
Vol 17 (2) ◽  
pp. 429 ◽  
Author(s):  
Qintao Yang ◽  
Liang Gong ◽  
Lili Huang ◽  
Qinglin Xie ◽  
Yijian Zhong ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Removal Efficiency ◽  
Ph Effect ◽  
Freundlich Isotherm ◽  
Xrd Analysis ◽  
Optimal Value ◽  
Equilibrium Data ◽  
Pseudo Second Order ◽  
Adsorption Desorption ◽  
Modified Diatomite

A novel chitosan (CS)-modified diatomite (Dt) was prepared by a simple mixture in the mass ratio to remove As(V) from aqueous solution in this research. The CS-modified Dt adsorbent was characterized by scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and X-ray powder diffraction (XRD) analysis. The parameters to influence the adsorption of As(V) ion were studied under such conditions as kinetics, adsorption isotherm, and pH effect. The results revealed that adsorption of As(V) was initially rapid and the equilibrium time was reached after 40 min. The optimal value of the pH was 5.0 for better adsorption. The equilibrium data were well fitted to the Langmuir isotherm compared to the Freundlich isotherm, and exhibited the highest capacity and removal efficiency of 94.3% under an initial As(V) concentration of 5 mg/L. The kinetic data were well described by the pseudo-second-order model. In addition, 0.1 M NaOH has the best desorption efficiency of As(V) adsorbed on CS-modified Dt, and the removal efficiency of As(V) was still higher than 90% when after six adsorption-desorption cycles. These results showed that the CS-modified Dt could be considered as a potential adsorbent for the removal of As(V) in aqueous solution.

scholarly journals Removal of Dye Toxicity from an Aqueous Solution Using an Industrial Strain of Saccharomyces Cerevisiae (Meyen)

2016 ◽  
Vol 227 (8) ◽  
Author(s):  
Guilherme Dilarri ◽  
Érica Janaina Rodrigues de Almeida ◽  
Hengli Barbosa Pecora ◽  
Carlos Renato Corso
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Aqueous Solution ◽  
Industrial Strain

Study on Adsorption of Cu(II) on Chitosan Nanofiber Membranes

2014 ◽  
Vol 13 (05n06) ◽  
pp. 1460009 ◽  
Author(s):  
Jianhua Cao ◽  
Dongzhou Li ◽  
Weihua Liang ◽  
Dayong Wu
Keyword(s):  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Ph Effect ◽  
Maximum Adsorption Capacity ◽  
Order Kinetic ◽  
Equilibrium Isotherms ◽  
Electrospinning Technique ◽  
Chitosan Nanofiber ◽  
Pseudo Second Order ◽  
Nanofiber Membranes

Chitosan nanofiber membranes by electrospinning technique were used to remove Cu ( II ) from aqueous solution. The adsorption kinetics, equilibrium isotherms, and pH effect were investigated in batch experiments. The Langmuir isotherm and pseudo second-order kinetic models agree well with the experimental data. The chitosan nanofiber membranes are effective for Cu ( II ) adsorption at pH6. Results showed that the maximum adsorption capacity of the chitosan nanofiber membranes with Cu ( II ) is 118.62 mg g-1. The chitosan nanofiber membranes can be used as an effective adsorbent for the removal of Cu ( II ) in aqueous solution due to high adsorption capacity.

scholarly journals Biosorption of Chromium (VI) and Calculations of Langmuir’s and Freundlichs Isotherms

2018 ◽  
Vol 60 (2) ◽  
pp. 90-95
Author(s):  
Muhammad Tahir Butt ◽  
Zara Amjad ◽  
Rauf Ahmad Khan
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Aqueous Solution ◽  
Heavy Metal ◽  
Toxic Metals ◽  
Low Cost ◽  
Cost Effective ◽  
Environmental Applications ◽  
Chromium Vi ◽  
Yeast Biomass ◽  
Process Cost

In the present study yeast biomass has been successfully used as biosorbent for removal of Crfrom aqueous solution. Yeasts of Saccharomyces cerevisiae are effective biosorbents for heavy metal ionsand it can be bought in large quantity at low cost. S. cerevisiae can remove toxic metals from aqueoussolutions to various levels. This low-cost biosorbent will make the process cost-effective and competitiveparticularly for environmental applications in detoxifying effluents. Langmuir’s and Freundlichs isothermswere also plotted to observe the maximum biosorption of heavy metal chromium (VI).

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