Sorption Kinetics and Isotherm Studies of Cationic Dyes Using Groundnut (Arachis Hypogaea) Shell Derived Biochar a Low-Cost Adsorbent

Jegan, J.; Saravanan, P.; Pushpa, T. Bhagavathi; Ravindiran, Gokulan

doi:10.15666/aeer/1801_19251939

Cited by 31 publications

(6 citation statements)

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“…The kinetic constant in this equation is represented by kab (L/mg min), the linear flow velocity is denoted by u (cm/min), and the saturation concentration is designated by Nab (mg/L) [35]. The parameter values for kab and Nab were obtained by plotting the function ln(Ct/C0) versus t and calculating its slope and intercept.…”

Section: Adams-bohart Modelmentioning

confidence: 99%

Valorization of Annona reticulata biochar by chitosan for the adsorption of Azo dye from Textile effluent

2023

Global NEST: The International Journal

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<p>Azo dye is a synthetic aromatic dye which are direct dye frequently used in textile industry to colour fibres. It also contributes to the damage of the environment. This study examines the adsorption biochar made from Annona reticulata to remove azo dye from textile wastewater. To improve the adsorption capacity, biochar valorized by chitosan molecules, Investigations were conducted on the use of chitosan-based materials that are acid-resistant for azo dye adsorption. In the batch experiment, basic operating parameters such as initial Azo dye concentrations, pH, contact time and bed height were assessed. The percentage removal efficiency for Azo dye was recorded as 67.18%, 75.88% and 94.37% for three dissimilar sized columns that were 6cm, 8cm, and 10cm. The UV–visible absorption spectroscopy was used to quantify the decolorization of dyes. The changed surface properties of the adsorbent produced from Annona reticulata were characterized by using SEM, XRD, and FTIR. The effectiveness of the column's adsorption was calculated mathematically by Yoon-Nelson, Thomas, and Adams-Bohart models. The model that best represents equilibrium isotherm data by adsorption had R2 values of 94.63, 86.67 and 96.35 respectively.</p>

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Section: Adams-bohart Modelmentioning

confidence: 99%

Valorization of Annona reticulata biochar by chitosan for the adsorption of Azo dye from Textile effluent

2023

Global NEST: The International Journal

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“…By electrically heating the adsorbent to 280°C in both an inert and an environment with air, thermal regeneration was accomplished [37]. The adsorbent was heated to between 300⁰c and 500⁰c in a muffle furnace during the hot water extraction process, twice washed with DI water and an HCL solution, and then dried for an additional two hours in a hot air oven [38].…”

Section: 8regeneration Of Adsorbentmentioning

confidence: 99%

Synthesis and adsorption capacity of biochar derived from Tamarindus indica shell for the removal of heavy metal

2023

Global NEST: The International Journal

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<p>Tamarindus indica shell biochar is employed as an alternate adsorbent precursor for the removal of heavy metal ions from aqueous solutions. It investigated the Tamarindus indica shell biochar's capacity to absorb chromium (Cr), copper (Cu), and Lead (Pb). This study showed the extensive explored how biosorption experimental limitations counting primary metal attentiveness, adsorbent dosage, temperature, and contact time affect the process. The complete analysis of the Tamarindus indica shell's adsorption capability with respect to chromium, copper, and nickel removal was conducted using a batch adsorption procedure. Determining the amount of heavy metal removal in the aqueous solution proceeded by Gas Chromatography (GC). The experimental data analyzed using the Yoon Nelson and Thomson models to regulate the equilibrium isotherms. The optimal parameters for the overall adsorption model were determined by using ANOVA. Investigate the adsorbent's surface area to determine the presence of heavy metal presents using SEM, XRD, and FTIR techniques. Each researched heavy metal's adsorption capability is listed below: Cr = 6.07 mg/L, Cu = 5.53 mg/L and Pb = 5.497mg/L with a removal percentage of 64%, 92% and 78%, respectively. The results showed that biochar generated from Tamarindus indica shells is an effective adsorbent for removing copper from aqueous solutions but not a viable biosorbent for removing chromium. Also, the regenerated column's adsorption capability was examined. The outcomes of the research demonstrated that bio-char, which produced from Tamarindus indica shell can be employed as an efficient and reasonably priced adsorbent to remove heavy metal ions from aqueous solutions.</p>

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“…The k 1 /2.303 indicates slope. The initial adsorption capability q e and rate constant k 1 originate from the slope and intercept resolute from ln(q e À q t ) versus t. 51 The ability of adsorption on the surface of the solid is considered by the pseudo-second-order kinetic model. The subsequent eqn (3) signifies the pseudo 2nd order kinetics, 52…”

Section: Batch Adsorption Parameter Optimizationmentioning

confidence: 99%

Conversion of Phaseolus vulgaris into chemically functionalized biocomposites for efficient methylene blue removal: kinetics, isothermal, and thermodynamics analysis

Saeed¹,

Kamran²,

Khan³

et al. 2023

New J. Chem.

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Sorption Kinetics and Isotherm Studies of Cationic Dyes Using Groundnut (Arachis Hypogaea) Shell Derived Biochar a Low-Cost Adsorbent

Cited by 31 publications

References 0 publications

Valorization of Annona reticulata biochar by chitosan for the adsorption of Azo dye from Textile effluent

Valorization of Annona reticulata biochar by chitosan for the adsorption of Azo dye from Textile effluent

Synthesis and adsorption capacity of biochar derived from Tamarindus indica shell for the removal of heavy metal

Conversion of Phaseolus vulgaris into chemically functionalized biocomposites for efficient methylene blue removal: kinetics, isothermal, and thermodynamics analysis

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