BIOSORPTION EVALUATION OF SYNTHETICDYE FROM FOOD INDUSTRY WASTEWATER ONTO SILKWORMCOCOONS: PRELIMINARY STUDIES

2018 ◽  
Vol 35 (2) ◽  
Author(s):  
GIOVANA GONÇALVES DUSI ◽  
ANDERSON MARCOS DIAS CANTELI ◽  
JOEL ROBERT KARP ◽  
LUCIANA IGARASHI MAFRA ◽  
AGNES DE PAULA SCHEER ◽  
...  
Keyword(s):  
Azo Dye ◽  
Food Industry ◽  
Kinetic Mechanism ◽  
Adsorption Kinetic ◽  
Batch Adsorption ◽  
Adsorption System ◽  
Biosorption Process ◽  
And Diffusion ◽  
Best Fit ◽  
Industry Wastewater

The aim of this study was to evaluate thesynthetic azo dye (tartrazine) biosorption onto second line silkworm cocoons. Batch adsorption system was used to investigate the effect of pH and initial tartrazine concentration in theliquid phase. Also, the kinetic mechanismwas investigated at 20°C and pH 2.0.The highest adsorption was obtained at the lowest pH evaluated, while the assays with pH above 3.0 did not show significant adsorption at the first hour of theprocess, indicating that biosorption is more favorable at lower values ofpH.The adsorption kinetic was studied at pH 2.0andcompared withthe kinetic mechanism ofconvective mass transfer and diffusion models.The kinetic behavior of biosorption process showed a high amount of dye adsorbedat the beginning of the process, however, after saturation of the functional groups, the adsorption rate decreased over time until saturation. After 24 hours of batch operation, the uptake of tartrazine onto silkworm cocoons was 40.39 mg g-1,and the rate of adsorption reduces from 3.430 to 0.003 mg min-1g-1, suggesting that the process approaches the equilibrium. The Crank model provided the best fit. The results revealed that silkworm cocoons have the potential to be used as a biosorbent for wastewater treatment containing tartrazine

Phosphate removal from food industry wastewater by chemical precipitation treatment with biocalcium eggshell

2021 ◽  
pp. 1-17
Author(s):  
Cristina Morales-Figueroa ◽  
Alejandra Teutli-Sequeira ◽  
Ivonne Linares-Hernández ◽  
Verónica Martínez-Miranda ◽  
Laura Garduño-Pineda ◽  
...  
Keyword(s):  
Food Industry ◽  
Chemical Precipitation ◽  
Phosphate Removal ◽  
Precipitation Treatment ◽  
Industry Wastewater

Degradation of an Azo Dye (Ponceau 4R) and Treatment of Wastewater from a Food Industry by Ozonation

2013 ◽  
Vol 35 (4) ◽  
pp. 295-301 ◽  
Author(s):  
Cristina Benincá ◽  
Patricio Peralta-Zamora ◽  
Célia Regina Granhen Tavares ◽  
Luciana Igarashi-Mafra
Keyword(s):  
Azo Dye ◽  
Food Industry ◽  
Ponceau 4R

scholarly journals BIOSORPTION OF METHYLENE BLUE BY WASTE APRICOT SHELLS FROM FOOD INDUSTRY

2018 ◽  
Vol 4 (7) ◽  
Author(s):  
Tatjana Šoštarić ◽  
Marija Petrović ◽  
Jelena Milojković ◽  
Jelena Petrović ◽  
Marija Stanojević ◽  
...  
Keyword(s):  
Experimental Data ◽  
Aqueous Solution ◽  
Methylene Blue ◽  
Food Industry ◽  
Fruit Juice ◽  
Waste Waters ◽  
Batch Experiments ◽  
Biosorption Capacity ◽  
Biosorption Process ◽  
Monolayer Adsorption

In this paper, the removal of methylene blue (MB) from aqueous solution by biosorption ontoapricot shellshas been investigated through batch experiments. Apricot shells were chosen as alocally available and abundant waste from fruit juice industry. Methylene blue is common pollutantof waste waters from textile industry.The influence of initial MB concentration on biosorption process has been studied. Theexperimental data have been analysed using Langmuir and Freundlichisotherm models. TheLangmuir model better fits to experimental data, which explain monolayer adsorption. Maximumbiosorption capacity is 24,31 mg/g. A comparison of the biosorption capacity of waste apricot shellswith biosorption capacities of similar adsorbents previously investigated indicates that apricotshells could be a promising biosorbent for removal of MB from aqueous solution.

scholarly journals Pore Diffusion Model for the Adsorption of Basic Dyestuffs onto Natural Clay in Batch Adsorbers

1992 ◽  
Vol 9 (2) ◽  
pp. 109-120 ◽  
Author(s):  
Mohammad S. El-Geundi
Keyword(s):  
Mass Transfer ◽  
Diffusion Coefficient ◽  
Diffusion Model ◽  
Sherwood Number ◽  
Pore Diffusion ◽  
Batch Adsorption ◽  
External Mass Transfer ◽  
Natural Clay ◽  
Pore Diffusion Model ◽  
Best Fit

The adsorption of basic dyestuffs (Basic Blue 69 and Basic Red 22) onto natural clay has been studied using a series of batch adsorption runs. The pore diffusion model (PDM) has been developed based on external mass transfer and pore diffusion to predict the performance of a batch adsorber. A computer program has been developed to generate theoretical Sherwood number-time curves and these results were adjusted to experimental Sherwood number-time curves by means of a ‘best fit’ approach. The variables of initial dye concentration and natural clay mass have been successfully correlated using a single external mass-transfer coefficient, Ks, and a single effective pore diffusion coefficient, Deff. The Ks values are 3.3 × 10−5 and 2.6 × 10−5 m/s for Basic Blue 69 and Basic Red 22, respectively. The Deff values are 7.3 × 10−10 and 9.6 × 10−10 m2/s for Basic Blue 69 and Basic Red 22, respectively.

Biostimulation of Azo Dye-Contaminated Soils by Food Industry Sludge

2010 ◽  
Vol 19 (4) ◽  
pp. 436-454 ◽  
Author(s):  
F. Olcay Topaç-Şağban ◽  
Efsun Dindar ◽  
Selnur Uçaroğlu ◽  
Hüseyin S. Başkaya
Keyword(s):  
Contaminated Soils ◽  
Azo Dye ◽  
Food Industry

Cadmium Adsorption Kinetic Study Using Natural Brasgel Clay the Adsorbent

2018 ◽  
Vol 912 ◽  
pp. 202-206 ◽  
Author(s):  
Joseane Damasceno Mota ◽  
Rochélia Silva Souza Cunha ◽  
Patrícia Noemia Mota de Vasconcelos ◽  
Meiry Gláucia Freire Rodrigues
Keyword(s):  
Heavy Metals ◽  
Industrial Effluents ◽  
Exchange Capacity ◽  
Adsorption Kinetic ◽  
Cadmium Removal ◽  
Kinetic Tests ◽  
Pseudo Second Order ◽  
Environmental Agencies ◽  
Best Fit ◽  
Nickel Lead

Heavy industrial activities result in contamination of waste water with many heavy metals, including cadmium, nickel, lead, mercury. Within this context becomes a growing concern of the population and environmental agencies regarding water contamination by heavy metals from industrial effluents. Because of this problem, this paper aims to study and evaluate the main properties of natural Brasgel clay in order to remove cadmium from synthetic effluents, analyzing its kinetic adsorption and its isothermal balance. Once clays exhibit good cation exchange capacity, selectivity and regenerability and for this reason has aroused interest in the use as an adsorbent. As finite bath testing we found that the Brasgel clay, removed approximately 90% of cadmium. The Langmuir model presented best fit to the experimental data, adequately describing the dynamics of adsorption. Kinetic tests indicated that the cadmium removal process by natural Brasgel clay apply the mechanism of the pseudo-second-order rate model, a time of 20 minutes and required to reach equilibrium. Thus, the results indicated that Brasgel clay can be used as an adsorbent for the removal of cadmium from contaminated effluent.

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