Central composite design optimization of Acid Blue 25 dye biosorption using shrimp shell biomass

Kousha, Masoud; Tavakoli, Samad; Daneshvar, Ehsan; Vazirzadeh, Arya; Bhatnagar, Amit

doi:10.1016/j.molliq.2015.03.046

Cited by 83 publications

(19 citation statements)

References 45 publications

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“…With an increase in pH (pH > 2.5), the biomass surface becomes negative in charge, thereby decreasing the dye adsorption due to electrostatic repulsion. Our results are also in good agreement with other research findings [28,31]. On the other hand, it is noted that lower pH (pH < 2.5) renders a decrease in adsorption of AY-99 on MLP.…”

Section: Effect Of Ph Temperature and Thermodynamic Propertiessupporting

confidence: 93%

“…Therefore, an efficient treatment for controlling water pollution has become an imperative task [43]. However, the fact is that these dyes are also very difficult to treat since they are the synthetic origin of complex molecular structure, highly resistant to aerobic digestion and stable when exposed to light, heat and oxidizing agents [26,28]. Numerous efficient physical and chemical methods such as chemical coagulation, reverse osmosis, filtration and advanced oxidation processes are often encountered by several limitations like Electronic supplementary material The online version of this article (https ://doi.org/10.1007/s4245 2-019-1537-6) contains supplementary material, which is available to authorized users.…”

Section: Introductionmentioning

confidence: 99%

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Biosorption of acid yellow-99 using mango (Mangifera indica) leaf powder, an economic agricultural waste

et al. 2019

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The competency of mango leaf powder (MLP), an eco-friendly and cost-effective adsorbent, has been extensively studied for the removal of a carcinogenic azo dye, acid yellow-99 (AY-99), from simulated wastewater on principal interest in combating water pollution and to comprehend the mechanisms of the phenomenon. Optimum dye adsorption occurs at pH 2.5, whereas the temperature has no significant effect. MLP can effectively adsorb 708.15 mg g −1 of dye as a function of the initial dye concentration with excellent fitting to the Langmuir isotherm model illustrating monolayer adsorption. The process is rather swift to be completed within ~ 160 min following film diffusion model and pseudo-second-order rate kinetics. The magnitude of hindrance exerted by NaCl in dye adsorption is found to be quite insignificant. The biomass is competent enough for anionic dye decolourization in the binary mixture (AY-99 + AR-88) determined by the first-order derivative spectrophotometric method. Thermodynamically the process is spontaneous, endothermic and entropy-driven. Zeta potential, XRD, SEM-EDXA and X-ray elemental mapping analyses have been used to assess the morphological changes and the mechanisms of dye interaction with MLP. FTIR spectroscopy and chemical modification of functional groups of biomass establish the major contribution of hydroxyl groups for effective dye decolourization through complexation and electrostatic interactions.

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Section: Effect Of Ph Temperature and Thermodynamic Propertiessupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Biosorption of acid yellow-99 using mango (Mangifera indica) leaf powder, an economic agricultural waste

et al. 2019

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“…And the adsorption was more strongly pH-dependent when the pH was over 10.6. SSP contains high percentage of chitin or chitosan, and its activated functional groups such as multiple imine and amine groups are easily protonated under acidic conditions (Kousha et al., 2015). CR dye is an anionic dye, which exists in aqueous solution in the form of negatively charged ions.…”

Section: Resultsmentioning

confidence: 99%

Adsorption of Congo red from aqueous solution onto shrimp shell powder

Zhou

Fan

et al. 2018

Adsorption Science & Technology

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Two novel adsorbents derived from shrimp shell were prepared and their adsorption performances on Congo red were investigated. The results suggested that treated shrimp shell powder exhibited a higher adsorption capacity than raw shrimp shell powder. The factors of initial concentration, solution pH, adsorption time, and temperature were investigated. The maximum adsorption capacity of treated shrimp shell powder calculated according to the Langmuir isotherm model was 288.2 mg/g, which is much higher than that of chitin. The adsorption behavior could be fitted well by the pseudo-second-order kinetic model. Intra-particle diffusion model was also used to study the adsorption process. The thermodynamic parameters indicated the spontaneous and endothermic nature of the adsorption. Shrimp shell powder exhibited enough advantages such as large adsorption capacity, low cost, simple processing methods and high specific gravity compared with chitin or chitosan. This work confirmed that the shrimp shell biosorbent had a potential to be applied in dye wastewater treatment area.

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“…The edge points are at the design limits, star points are at some distance from the centre depending on the number of factors in the design; the star points extend the range outside the low and high settings for all factors, while the centre points complete the design [19]. CCD provides high quality predictions over the entire design space, is suitable for fitting a quadratic surface, and usually works well for process optimization [20]. Box-Behnken design is an independent quadratic design because it does not contain an embedded factorial or fractional factorial design [21].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Biogas Production in a Batch Laboratory Digester Using Total Solids, Substrate Retention Time, and Mesophilic Temperature

Masinde¹,

Nyaanga²,

Njue³

et al. 2020

IJPER

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Optimization was done by investigating the interaction effects of total solids, mesophilic temperature, and substrate retention time on biogas production in a batch biodigester. The volume of the biodigester was 0.15m 3. Central composite design of Response Surface Methodology was used to design the experiment. Total solid levels were varied from 6.31% to 9.68%, temperature was from 26.59°C to 43.41°C, and substrate retention time was from 9.95 to 20.04 days. Analysis of results was done using Design Expert software statistical package (version 10.0.0.3). It gave a coefficient of determination of 0.9665 which indicated a high correlation between the variables. All the variables had a significant effect. The highest biogas production rate of 75.41litres/day (or 0.50 m 3 of biogas per m 3 of digester volume per day, m 3 /m 3 d) was achieved at a level of 8% total solids, a temperature of 43.41°C, and a substrate retention time of 15 days.

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Central composite design optimization of Acid Blue 25 dye biosorption using shrimp shell biomass

Cited by 83 publications

References 45 publications

Biosorption of acid yellow-99 using mango (Mangifera indica) leaf powder, an economic agricultural waste

Biosorption of acid yellow-99 using mango (Mangifera indica) leaf powder, an economic agricultural waste

Adsorption of Congo red from aqueous solution onto shrimp shell powder

Optimization of Biogas Production in a Batch Laboratory Digester Using Total Solids, Substrate Retention Time, and Mesophilic Temperature

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