Adsorption of azo dyes from water by new poly (3-acrylamidopropyl)-trimethylammonium chloride-co-N,N-dimethylacrylamide superabsorbent hydrogel—Equilibrium and kinetic studies

Patel, Yatin N.; Patel, Manish P.

doi:10.1016/j.jece.2013.09.024

Cited by 31 publications

(8 citation statements)

References 29 publications

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“…Azo dye was primarily existing in effluent at a meditation of 270 mg/L. Batch process research performed to examine Azo dye adsorption in order to evaluate how well Annona reticulata -chitosan assisted as an adsorbent for the elimination of Azo dye [58]. In order to gauge how well the treatment was functioning, samples were obtained every 10 minutes and analyzed using a UV-visible spectrophotometer technique.…”

Section: Adsorption Studymentioning

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: Adsorption Studymentioning

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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“…Worldwide annually over 7 x 10 5 of dyes are produced, from which 100,000 dyes are available commercially [7,8]. Allergic, muta and carcinogenic effects may be caused by these contaminants [9,10].…”

Section: Review Articlementioning

confidence: 99%

“…Batch mode adsorption experiments were carried out for removing Basic blue 3, Basic red 22 and Basic black 9 from aqueous solutions using sewage treatment plant biosolids (sludge), by varying contact time, initial dye concentration, initial adsorbent dosage, agitation rate, temperature and pH. The results revealed that the adsorption capacity of basic dyes was higher (22-24 mg/g) with the lower values of the temperature (25-30°C), adsorbent dosage (0.5-0.75% w/v), higher values of the initial pH (8)(9) and agitation rate (150-200 rpm) at 2 h of operation [157].…”

Section: Spent Brewery Grainsmentioning

confidence: 99%

Dyes Removal Using Novel Sorbents – A Review

Amalraj

Ramsenthil

Durai

et al. 2021

JPRI

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Efficient and economical treatment for color removal in the effluent of dyeing units and the dyestuff production units have always need an emerging technologies. In general physical methods such as adsorption, ion exchange and filtration/coagulation methods, chemical methods like ionization, Fenton reagent, photo catalytic & biological processes namely aerobic/anaerobic degradation, biosorption are used for dye removal. Adsorption using solid materials (i.e.) adsorbents, considered as an effective process for color removal, because of its higher efficiency over other processes. Researchers made an attempt to use various non-conventional, low-cost, naturally-occurring biomasses as adsorbent, which may be mineral, organic or biological materials. These include fruit peels, seeds, leaves, bark, sawdust, straw, ash sludge and other materials that are available in abundant quantity. The various methods showed the color removal capability of adsorbents; mainly based on the processing methods and the variety of dye. In this review, various dye adsorbents and their capacity for removing the dyes from various effluents is highlighted.

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“…In recent years, with the rapid growth of the population and the high speed of industrialization, water pollution has gradually evolved into one of the most important environmental problems in society [1]. The main sources of water pollution are heavy metal ions and organic dyes [2,3]. Heavy metal ions, such as Cr 6+ , Cd 2+ , Hg 2+ , Pb 2+ , etc., not only seriously pollute the water body, soil, and the atmosphere, but also enter the human body through the food chain and the bio-concentration effect.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Carboxymethylcellulose–Acrylamide–Montmorillonite Composite Hydrogels for Wastewater Purification

Xue,

Zhong,

Wang

et al. 2023

Separations

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The three-dimensional network and ample pore structure of novel hydrogel materials enable outstanding adsorption performance for pollutants such as methylene blue (MB) and Cr6+ ions in wastewater. In order to develop an environmentally friendly hydrogel with high adsorption performance and low cost, a type of carboxymethyl cellulose (CMC) composite hydrogel was synthesised with montmorillonite (MMT) via chain radical polymerization, which gives it great potential for application in the field of wastewater purification. A series of hydrogel samples were characterised through SEM, FTIR and nitrogen porosimetry analysis, indicating the successful intercalation of MMT nanosheets into the hydrogel crosslinking network. The mass ratio of CMC to MMT, the amounts of adsorbent, the initial concentration of wastes, pH, and the adsorption temperature were investigated and optimised for hydrogel adsorption performance. When the initial concentration of MB is 60 mg/L, pH is 7, the dosage of MB is 0.5 g/L, and the adsorption temperature is 30 °C, the hydrogel sample the highest adsorption capability for MB removal, with an adsorption amount of 112.9 mg/g. When the initial concentration of Cr6+ is 10 mg/L with a pH of 7, the highest adsorption capacity of the hydrogel for Cr6+ removal is 1.35 mg/g. The fitting results of the isothermal models, the kinetic models, internal particle diffusion models and the thermodynamics of the experimental data of the adsorbate adsorption process show that the adsorption of MB by hydrogel is a spontaneous segmented process of multi-layer physical and chemical adsorption. Additionally, the adsorption of Cr6+ ions by hydrogel is a spontaneous segmented process of multi-layer physical adsorption.

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Adsorption of azo dyes from water by new poly (3-acrylamidopropyl)-trimethylammonium chloride-co-N,N-dimethylacrylamide superabsorbent hydrogel—Equilibrium and kinetic studies

Cited by 31 publications

References 29 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

Dyes Removal Using Novel Sorbents – A Review

Synthesis of Carboxymethylcellulose–Acrylamide–Montmorillonite Composite Hydrogels for Wastewater Purification

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