Process Optimization and Modeling the Adsorption of Polycyclic Aromatic-Congo Red Dye onto <i>Delonix regia</i> Pod-Derived Activated Carbon

Latinwo, Ganiyu K.; Alade, Abass Olanrewaju; Agarry, S. E.; Dada, Ebenezer Olujimi

doi:10.1080/10406638.2019.1591467

Cited by 16 publications

(14 citation statements)

References 46 publications

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“…Even trace MO or CR also shows high visibility, reducing the penetration of sunlight in water and inhibiting the oxygen content and the photosynthesis effect . Furthermore, aromatic amines with azo groups have been shown to be carcinogenic to animals and human beings. , Therefore, these effluents must be treated before discharging into the water environment.…”

Section: Introductionmentioning

confidence: 96%

“…6 Furthermore, aromatic amines with azo groups have been shown to be carcinogenic to animals and human beings. 7,8 Therefore, these effluents must be treated before discharging into the water environment.…”

Section: Introductionmentioning

confidence: 99%

“…Many methods including biodegradation, , adsorption, , photodegradation, , and electrodegradation , are adopted to treat MO and CR from aqueous solutions. Among these technologies, adsorption is considered as a promising method due to its high efficiency, reliability, and simplicity. , The core of adsorption technology lies in the seeking for appropriate adsorbent. Activated carbon has been proven to be a reliable adsorbent for the removal of dye effluent , and has been utilized in practices.…”

Section: Introductionmentioning

confidence: 99%

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Performances and Mechanism of Methyl Orange and Congo Red Adsorbed on the Magnetic Ion-Exchange Resin

et al. 2020

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Effective removal of azo dyes is a stringent issue. In this study, the adsorption behaviors of methyl orange (MO) and congo red (CR) on the magnetic ion-exchange (MIEX) resin were investigated by batch experiments. Attaining adsorption equilibrium of MO and CR takes 90 and 150 min, respectively. The equilibrium adsorption capacity of MO (42.32 mg mL −1 ) on the MIEX resin is much larger than that of CR (30.57 mg mL −1 ). The kinetic processes of MO and CR adsorbed on the MIEX resin follows the Elovich model. At 288 K, the Langmuir model can simulate the equilibrium adsorption data of MO and CR. However, the equilibrium data can be well fitted by the Freundlich model at 293 and 303 K. The thermodynamic parameters show that the adsorption of MO and CR are both thermodynamically spontaneous, endothermic processes. The MIEX resin can well remove MO (80%) and CR (50%) at pH 5.0−9.0. Ion exchange dominates the mechanism of CR adsorbed on the MIEX resin. For MO, however, physical adsorption plays a role to some extent besides ion exchange. Sodium chloride (187 mg) is needed to regenerate per milliliter of spent the MIEX resin. After eight times adsorption−desorption cycles, The MIEX resin retains still efficient adsorption. As a summary, the MIEX resin can be considered as a promising adsorbent to remove azo dyes from water and wastewater due to its high adsorption capacity, short adsorption time, and simple regeneration.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performances and Mechanism of Methyl Orange and Congo Red Adsorbed on the Magnetic Ion-Exchange Resin

et al. 2020

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“…turbid raw water and adsorbent are hastily colliding with each other and lead to detachment of loosely bound impurities molecule (Latinwo et al, 2019). The results shown in Figure 6 (b) indicates that the optimum turbidity removal time by NMAC lies between 24 min to 33 min.…”

Section: Optimizationmentioning

confidence: 96%

“…Increment in time of agitation may improve turbidity removal efficiency, but it does not show any obvious effect as rotation speed increases. The rapid adsorption may occur due to diffusion control from the bulk of the liquid phase to the unoccupied binding site at the surface of the adsorbent (Latinwo et al, 2019).…”

Section: Optimizationmentioning

confidence: 99%

Turbidity Reduction of Groundwater by Using Nanomagnetic Adsorbent Composite (NMAC): Process Optimization by 3k Factorial Design and Analysis

2022

Global NEST: The International Journal

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<p>The widespread use of alternative water sources in Kelantan encourages the development of cost-effective methods for the purification of water. A simple and straightforward adsorption process using a nanomagnetic adsorption composite (NMAC) was introduced in this study as a new adsorbent for the treatment of turbid polluted groundwater. The use of iron oxide nano-coated adsorbents (NMACs) showed a high porosity relative to commercial activated carbons (CACs). Analysis of X-ray diffraction analysis for NMAC is confirmed by a crystal framework for Fe2O3, Fe3O4, and FeO are cubic components. A 3k maximum factor configuration of four factors, i.e., adsorbent dosage (0.02, 0.04, and 0.06 g), agitation time (15, 30, and 60 min), rotation speed (150, 200, and 250 rpm) and adsorbent scale (< 45 μm and > 300 μm) were used. The turbidity removal capability of both NMAC and CAC was compared. The adequacy of the developed empirical model for the elimination of turbidity and maximum turbidity efficiency was determined by regression model analysis. The obtained results revealed regression values of NMAC (R2; 0.9903, R2 adj.; 0.9875, R2 pred; 0.9808) and CAC (R2; 0.9909, R2 adj.; 0.9981, R2 pred.; 0.9817). The analysis of variance and surface response methodology revealed that turbidity removal efficiency of NMAC is affected by the four factors investigated. Among the samples, 0.04 g NMAC (< 45 μm) agitated at 150 rpm for 48 min showed 98.76% maximum adsorption efficiency. The findings showed that NMAC is a strong adsorbent for use in the treatment of raw water.</p>

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Facile Synthesis of an Organic–Inorganic Nanohybrid Composite of Salicylaldehyde-Based Chitosan Schiff Base/SiO2 for Acid Red 88 Dye Removal: Characterization and Adsorption Modeling

Wu,

Abdulhameed,

Yong

et al. 2023

J Inorg Organomet Polym

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Process Optimization and Modeling the Adsorption of Polycyclic Aromatic-Congo Red Dye onto Delonix regia Pod-Derived Activated Carbon

Cited by 16 publications

References 46 publications

Performances and Mechanism of Methyl Orange and Congo Red Adsorbed on the Magnetic Ion-Exchange Resin

Performances and Mechanism of Methyl Orange and Congo Red Adsorbed on the Magnetic Ion-Exchange Resin

Turbidity Reduction of Groundwater by Using Nanomagnetic Adsorbent Composite (NMAC): Process Optimization by 3k Factorial Design and Analysis

Facile Synthesis of an Organic–Inorganic Nanohybrid Composite of Salicylaldehyde-Based Chitosan Schiff Base/SiO2 for Acid Red 88 Dye Removal: Characterization and Adsorption Modeling

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