Investigation of equilibrium, kinetics and thermodynamics of extracted chitin from shrimp shell in reactive blue 29 (RB-29) removal from aqueous solutions

Naghizadeh, Ali; Ghafouri, Maryam; Jafari, Ali

doi:10.5004/dwt.2017.20471

Cited by 31 publications

(7 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our results are compatible with those of similar studied e.g. Naghizadeh et al who obtained the maximum RB-29 adsorption capacity (q m ) of chitin onto shrimp shell as 116.07 mg g − 1 at 50 mg L −1 and contact time of 90 min [44]. According to a previous study Pourzamani et al, the highest removal efficiency of benzene removal from aqueous solution by MWCNTs was observed at 20 min and there was a direct correlation between removal efficiency and contact time [19].…”

Section: Effect Of Contact Time and Kinetic Modelingsupporting

confidence: 93%

Atenolol adsorption onto multi-walled carbon nanotubes modified by NaOCl and ultrasonic treatment; kinetic, isotherm, thermodynamic, and artificial neural network modeling

Dehdashti

Amin

Gholizadeh

et al. 2019

J Environ Health Sci Engineer

View full text Add to dashboard Cite

The removal of pharmaceutical pollutants from the aqueous environment is a great environmental concern, mainly due to their diversity, high consumption, and sustainability. In the current study, we aimed to investigate the ability of multi-walled carbon nanotubes (MWCNTs) modified by sodium hypochlorite (NaOCl) and ultrasonic treatment in refining wastewaters contaminated with Atenolol β-blocker drug (ATN). The physical and structural characteristics of the raw MWCNTs and modified MWCNTs (M-MWCNTs) were analyzed using SEM, TEM, Raman spectroscopy, TGA, and FT-IR techniques. The effects of different parameters, including pH, initial concentration, contact time, and temperature were studied and optimized. Subsequently, the adsorption data were analyzed by several kinetic and equilibrium isotherm equations and modeled by artificial neural network (ANN). Highest ATN removal (87.89%) ((q e,exp = 46.03 mg g −1)) occurred on the adsorbent activated within 10 s of ultrasonication time and NaOCl 30%. Moreover, adsorbent modification significantly improved the ATN removal, so that the removal rate on the raw MWCNTs was about 58%, but in the same conditions, M-MWCNTs removed more than 92% of the adsorbate. The adsorption process reached equilibrium after 90 min under the optimized pH of 6. According to ANN modeling, approximately the whole values dispersed around the 45°line, indicating a good compatibility between the trial results and ANNpredicted data. The modification of MWCNTs in proper ultrasonic power via appropriate concentration of NaOCl solution removed many of the impurities and significantly improved the adsorption performance of MWCNTs.

show abstract

Section: Effect Of Contact Time and Kinetic Modelingsupporting

confidence: 93%

Atenolol adsorption onto multi-walled carbon nanotubes modified by NaOCl and ultrasonic treatment; kinetic, isotherm, thermodynamic, and artificial neural network modeling

Dehdashti

Amin

Gholizadeh

et al. 2019

J Environ Health Sci Engineer

View full text Add to dashboard Cite

show abstract

“…Natural water conservation is vital to protect the land and save the next generations. As discussed by Naghizadeh et al, [ 1 ] there are different types of industries such as textile, papermaking, cosmetics, food, and leather releasing wastewaters into the environment. Among these, the textile industry is one of the major industries in the country, largest water consumer and wastewater source.…”

Section: Introductionmentioning

confidence: 99%

Removal of methylene blue from textile waste water using kaolin and zeolite-x synthesized from Ethiopian kaolin

Mulushewa

Tagesse

Ayele

2021

Environ Anal Health Toxicol

View full text Add to dashboard Cite

The wastewater generated from textile factories is linked to one of the main water pollution problems; therefore, it is important to reduce the pollutants in industrial effluents before their discharge into environment. The present study was to investigate the appropriateness zeolite-x and kaolin as effective adsorbents for removal of methylene blue from the textile wastewater. Batch adsorption experiments were carried out to assess parameters that influence the adsorption process. The prepared zeolite-x and kaolin were characterized by Fourier Transform Infrared and X-ray diffraction techniques. The results of this study showed that the particle size is 40.77 nm and 0.45 nm kaolin and zeolite-x respectively. The performance of zeolite-x adsorbent is best at the optimum pH 4 with removal efficiency of 97.77% and kaolin adsorbent at pH 6 with removal efficiency of 86.86%. The optimum contact time was obtained at 60 and 80 minutes for zeolite-x and kaolin respectively. While optimum adsorbent dosage was obtained at 0.4 and 0.6 grams with removal efficiency of 97.12% and 87.75% for the zeolite-x and kaolin adsorption experiment respectively. The confirmed square sum errors values are 1.0×10 -4 and 1.0×10 -3 for zeolite-x and kaolin, respectively. The Adsorption isotherms results have well fitted to Freundlich isotherm than Langmuir isotherm. The adsorption kinetics results were best fitted the pseudo second order model. The result shows that the zeolite-x has high removal efficiency than kaolin at the same operating conditions. Application of this method can be economically, environmentally, and socially feasible to address wastewater problems. Further research has to be carried out on the removal capacity of this adsorbent for organic dyes not only from the textile industry but also from leather industries and soap industries.

show abstract

“…Dyestuff wastewater from various industries, such as pharmaceuticals, paper, textile, cosmetics, plastic, printing and dyeing, and leather industries, has received considerable attention due to its deep chromaticity, high toxicity, and teratogenicity, and so on. [1][2][3][4][5][6] Nowadays, more than 10,000 various types of dye are commercially produced. It has been estimated that 1.6 million tons of dyes are annually produced, from which 10-15% is disposed of wastewater.…”

Section: Introductionmentioning

confidence: 99%

Cadmium‐based metal–organic framework for removal of dye from aqueous solution

Hazrati

Safari

2020

Env Prog and Sustain Energy

View full text Add to dashboard Cite

Metal–organic framework ([Cd2(oba)2(4‐bpdb)2] n·3.5(DMF)) (TMU‐8) was successfully synthesized via mechanosynthesis by using nonlinear dicarboxylate and linear N‐donor. The TMU‐8 exhibited accessible cages and tunnels, specific adsorption making it excellent adsorbent for dye removal. The obtained TMU‐8 exhibited accessible cages and tunnels, specific adsorption making them excellent adsorbent for dye removal. The adsorption isotherms, kinetics, thermodynamics, and spectroscopic analyses of the removal of the reactive black 5 onto TMU‐8 were studied. Several variables affecting the removal of the reactive black 5, such as sample pH, amount of sorbent, contact time, and salt concentration, were investigated and optimized. The thermodynamic parameters and kinetics characteristics were also analyzed. The thermodynamic parameters and kinetics characteristics were analyzed. The experimental isotherms data were fitted into Freundlich, Temkin, and Langmuir isotherm equations, and the results indicated that the Langmuir isotherm described the data appropriable than others for reactive black 5 adsorptions. The qmax (mg g−1) was calculated from the Langmuir as 79.36 mg g−1. The fitness of equilibrium data to kinetic models such as, pseudo‐first‐order and pseudo‐second‐order were studied. The adsorption followed pseudo‐second‐order kinetics. Thermodynamic parameters like the enthalpy, entropy, and Gibbs free energy were determined by the Gibbs free energy function, confirming that the adsorption process was spontaneous, exothermic, and feasible.

show abstract

Investigation of equilibrium, kinetics and thermodynamics of extracted chitin from shrimp shell in reactive blue 29 (RB-29) removal from aqueous solutions

Cited by 31 publications

References 43 publications

Atenolol adsorption onto multi-walled carbon nanotubes modified by NaOCl and ultrasonic treatment; kinetic, isotherm, thermodynamic, and artificial neural network modeling

Atenolol adsorption onto multi-walled carbon nanotubes modified by NaOCl and ultrasonic treatment; kinetic, isotherm, thermodynamic, and artificial neural network modeling

Removal of methylene blue from textile waste water using kaolin and zeolite-x synthesized from Ethiopian kaolin

Cadmium‐based metal–organic framework for removal of dye from aqueous solution

Contact Info

Product

Resources

About