Adsorption of reactive dye from an aqueous solution by chitosan: isotherm, kinetic and thermodynamic analysis

Annadurai, G.; Ling, Lai Yi; Lee, Jiunn‐Fwu

doi:10.1016/j.jhazmat.2007.07.002

Cited by 331 publications

(180 citation statements)

References 41 publications

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“…[45] Values n indicate that the SnO 2 /(NH 4 ) 2 -SnCl 6 -NCs-AC may be uniform dyes adsorption can be also explained by this model. [46] As stated in the literature, the E value of Dubinin-Radushkevich equation ranges from 1.0 to 8.0 kJ mol −1 for physical adsorption and from 8.0 to 16.0 kJ mol −1 for chemical ion exchange adsorption. [47] Hence, the values of E in the present study are found to be below 8 kJ mol −1 (Table 4).for both dyes which corresponds to physical adsorption.…”

Section: Adsorption Isotherm Modelingmentioning

confidence: 97%

Synthesis and characterization of SnO₂/(NH₄)₂‐SnCl₆ nanocomposites loaded on activated carbon and its application for adsorption of methylene Blue and Orange G

Jalali

Rahimi

Ghaedi

et al. 2017

Applied Organom Chemis

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The present study deals with the synthesis and characterization (FE-SEM, particle size distribution, XRD and point of zero charge) SnO 2 /(NH 4 ) 2 -SnCl 6 nanocomposites loaded on activated carbon (SnO 2 /(NH 4 ) 2 -SnCl 6 -NCs-AC) and its subsequent application for the simultaneous removal of Methylene Blue (MB) and Orange G (OG) from aqueous solution. Response surface methodology (RSM) based on central composite design (CCD) give trend of influencing responses with respect to five parameters such as contact time (X 1 ), OG concentration (X 2 ), MB concentration (X 3 ), adsorbent mass (X 4 ) and pH (X 5 ). In later stage following recognition of significant variables and interaction, quadratic model generated which are able to predict the dyes removal in different conditions. Justification and selection of significant terms was conducted based on analysis of variance and Fisher's F-test Optimal value of contact time, OG concentration, MB concentration, adsorbent mass and pH were set at 4.0 min, 10 mg l −1 , 20 mg L −1 , 0.015 g and 6.0, respectively, which lead to achievement of best experiment removal percentage of 97.0 and 99.5% OG and MB respectively, from their binary solutions. The whole experimental data follow pseudo-first-order and pseudo-second-order rate equations. The fitting experimental data to more available conventional model like Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherm models revel more ability of Langmuir model (with R 2 > 0.997) for explanation of system in equilibrium. The adsorption efficiency remained high even after the five cycle of reuse (99.76% and 95.56% for MB and OG, respectively).KEYWORDS adsorption isotherm and kinetic, experimental design, methylene blue, orange G, SnO 2 /(NH 4 ) 2 -SnCl 6 -NCs-AC, ultrasound

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Section: Adsorption Isotherm Modelingmentioning

confidence: 97%

Synthesis and characterization of SnO₂/(NH₄)₂‐SnCl₆ nanocomposites loaded on activated carbon and its application for adsorption of methylene Blue and Orange G

Jalali

Rahimi

Ghaedi

et al. 2017

Applied Organom Chemis

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“…Some of the reported adsorbents include agricultural and poultry by-products (eggshell waste, bagasse pith, maize cob, hen feathers, rice husk, and coconut shell), industrial waste products (waste carbon slurries and metal hydroxide sludge), clay materials (bentonite and kaolinite), zeolites, siliceous material (silica beads, alunite, and perlite), bio-sorbents (chitosan, peat, and biomass) and others (starch, cyclodextrin, and cotton), microorganisms such as algae [3][4][5][6][7][8][9][10][11][12][13]. Chitosan has received considerable interest for heavy metals removal due to its excellent metal-binding capacities and low cost, as can be obtained for free from fishery wastes such as shrimp, lobster, and crab shells [14][15][16][17][18].…”

Section: Chemistry Education Study Program Faculty Of Teacher Trainimentioning

confidence: 99%

Potency of Chitin as an Adsorbent in Black Water Treatment Process at Peatland Environment

Syahmani¹,

Leny²,

Iriani³

et al. 2018

Proceedings of the 1st International Conference on Social Sciences Education - "Multicultural Transformation in Education, Soci

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Abstract-The main problem in treatment peat water is related to its specific characteristics, such as low pH (3-4), high organic content, high Fe and Mn content, and dark brown or black water. The objectives of this research are: (1) to determine the potency and effectiveness of chitin as an adsorbent in black water treatment process using column system, and (2) to know the desorption capability of dilute acid toward the Fe and Mn cations that adsorbed in chitin column. The results showed that chitin was successfully isolated from shrimp waste by hydrolysis reaction (including three steps namely deproteination, decalcification, and decolorizing). Chitin column system is effective enough to be used as an adsorbent black water. Active sites of chitin (acetamide and hydroxyl) have the ability to adsorb metals contained in the black water of eco-friendly land. The maximum ability of chitin in black water treatment happened at 30 cm display column and 6 drops/min for flow rate. In this maximum condition, chitin column ability reduces Fe, Mn, dissolved solids, BOD, COD, pH, temperature, and color respectively as much as 86.69%, 91.80%, 98.67%, up to 275%, below 99%, neutral pH range, normal air temperature, and colorless. Thus, chitin can be utilized to treat black water until it is suitable to drink. People knowledge about chitin potency as the adsorbent in black water can transform the habit of people around black water environment in using black water. Black water will be used by people around peatland environment after the treatment by chitin as a tool to the black water treatment process.

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“…These behaviors can be explained by the ineffectiveness of the overdosed chitosan, i.e., the appropriate dosage of chitosan can cause the dye particles to aggregate (destabilization) and settle, so that chitosan-dye bridging occurs [8]. And when the chitosan dosage in the solution exceeds an optimal threshold, there will not be enough bare dye particles with unoccupied surface available for the attachment of hydroxyl or amino group of chitosan [27]. Moreover, because of the COD in chitosan solution, the excessive chitosan itself makes COD value increase after chitosan is overdosed, hence the drop of COD removal.…”

Section: Chitosan Dosagementioning

confidence: 99%

Applying an Artificial Neural Network to Predict Coagulation Capacity of Reactive Dyeing Wastewater by Chitosan

Bùi

Duong

Nguyen

2016

Pol. J. Environ. Stud.

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Adsorption of reactive dye from an aqueous solution by chitosan: isotherm, kinetic and thermodynamic analysis

Cited by 331 publications

References 41 publications

Synthesis and characterization of SnO₂/(NH₄)₂‐SnCl₆ nanocomposites loaded on activated carbon and its application for adsorption of methylene Blue and Orange G

Synthesis and characterization of SnO₂/(NH₄)₂‐SnCl₆ nanocomposites loaded on activated carbon and its application for adsorption of methylene Blue and Orange G

Potency of Chitin as an Adsorbent in Black Water Treatment Process at Peatland Environment

Applying an Artificial Neural Network to Predict Coagulation Capacity of Reactive Dyeing Wastewater by Chitosan

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Adsorption of reactive dye from an aqueous solution by chitosan: isotherm, kinetic and thermodynamic analysis

Cited by 331 publications

References 41 publications

Synthesis and characterization of SnO2/(NH4)2‐SnCl6 nanocomposites loaded on activated carbon and its application for adsorption of methylene Blue and Orange G

Synthesis and characterization of SnO2/(NH4)2‐SnCl6 nanocomposites loaded on activated carbon and its application for adsorption of methylene Blue and Orange G

Potency of Chitin as an Adsorbent in Black Water Treatment Process at Peatland Environment

Applying an Artificial Neural Network to Predict Coagulation Capacity of Reactive Dyeing Wastewater by Chitosan

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Synthesis and characterization of SnO₂/(NH₄)₂‐SnCl₆ nanocomposites loaded on activated carbon and its application for adsorption of methylene Blue and Orange G

Synthesis and characterization of SnO₂/(NH₄)₂‐SnCl₆ nanocomposites loaded on activated carbon and its application for adsorption of methylene Blue and Orange G