Adsorption characteristics for the removal of a toxic dye, tartrazine from aqueous solutions by a low cost agricultural by-product
TL;DR: In this paper, the effect of the parameters such as pH, initial dye concentration and temperature on the removal of an anionic dye, tartrazine, from aqueous solutions has been investigated.
About: This article is published in Arabian Journal of Chemistry.The article was published on 2017-05-01 and is currently open access. It has received 525 citations till now. The article focuses on the topics: Freundlich equation & Langmuir.
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TL;DR: An extensive list of various adsorbents such as natural materials, waste materials from industry, agricultural by-products, and biomass based activated carbon in the removal of various dyes has been compiled here.
2,979 citations
TL;DR: In this article, the preparation of activated carbon from coconut husk with H 2 SO 4 activation (CSAC) and its ability to remove textile dyes (maxilon blue GRL, and direct yellow DY 12), from aqueous solutions were reported.
680 citations
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...The dye contaminations in water tend to prevent light penetration and therefore, affect photosynthesis considerably (Banerjee and Chattopadhyaya, 2013; Hajati et al., 2014; Hameed et al., 2013)....
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TL;DR: In this article, a review of fixed-bed column studies for removal of various contaminants from synthetic wastewater is presented, in which adsorption of chromium metal is most exploitable.
Abstract: Present paper involved the review of fixed-bed column studies for removal of various contaminants from synthetic wastewater. Basic concept of adsorption, its types (i.e., chemisorption and physisorption) and its mechanism, adsorbents and adsorbates were included. Comparison of batch and column adsorption study is mentioned. Complete study of breakthrough curve for designing adsorptive column is interpreted. This paper explicates the detailed explanation of various process parameters and isotherm models for column study. Fixed-bed adsorption studies using various adsorbates, i.e., metal, ion, dye and other hazardous materials, are reviewed, in which adsorption of chromium metal is most exploitable. Conclusion and some challenges for utilization in real world are also exposed.
351 citations
TL;DR: In this article, the authors provided an up-to-date information on the application of sustainable low-cost alternative adsorbents such as agricultural solid wastes, agricultural by-products, and biomass-based cost-effective activated carbon and various other natural materials in the batch adsorptive removal of heavy metal and dye from aqueous phase.
Abstract: Agricultural solid wastes either in natural or in modified forms have been successfully used for decades as non-conventional cost-effective adsorbents for removing metal ions and dyes from their aqueous phase and have been recognized as a sustainable solution for wastewater treatment. Therefore, this review article provides extensive literature information about heavy metals and dyes, their classifications and toxicity, various treatment methods with emphasis on adsorption characteristics by numerous agricultural solid wastes, or agricultural solid waste-derived adsorbents under various physicochemical process conditions. This review article not only provided an up-to-date information on the application of sustainable low-cost alternative adsorbents such as agricultural solid wastes, agricultural by-products, and biomass-based cost-effective activated carbon and various other natural materials in the batch adsorptive removal of heavy metal and dye from aqueous phase but also presented a comprehensive compilation of adsorptive pollutant removal information based on various reported continuous column operation studies which is one of the new aspect to this review article. The effectiveness of various batch and column operational process parameters on mechanistic adsorptive removal of both heavy metals and dyes by various agricultural solid waste-based adsorbents has been critically discussed here. Batch and column adsorption mechanism, batch kinetics, column dynamic modeling, and adsorptive behavior of adsorbents under various process parameters have also been critically analyzed and compared. Finally, literature information on recovery and regeneration through desorption techniques and cost comparison of various agricultural solid waste adsorbents with commercial activated carbons have also been reported here. Conclusions have been drawn from the literature reviewed, and few suggestions for future research direction are proposed.
332 citations
Cites background from "Adsorption characteristics for the ..."
...…(nitric acid treated) Malachite green 303–333 Endothermic Ramaraju et al. (2013) Saw dust Tartrazine (acid yellow 23, FD and C yellow 5, E102) 298–318 Endothermic Banerjee and Chattopadhyaya (2013) Sugarcane bagasse Rhodamine B 303–323 Endothermic Zhang et al. (2013) Activated bamboo waste…...
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TL;DR: Results obtained suggest that the prepared composite beads could be applied effectively for removing cationic dyes from aqueous solutions and showed good reusability for MB dye removal with high efficiency.
201 citations
References
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TL;DR: In this article, the absorption index at the wave length of the band maximum was found to be proportional to the total concentration of metal at shorter wave lengths, however, deviations were observed, the absorption increasing more rapidly with concentration than Beers' law would demand.
Abstract: solutions investigated, the absorption index diminishing approximately 1% for a rise in temperature of one degree. 6. In liquid ammonia rough measurements of concentration showed the absorption index to be proportional to the total concentration of metal. 7. In methylamine the absorption index, at the wave length of the band maximum is also proportional to the total concentration of metal. At shorter wave lengths, however, deviations were observed, the absorption increasing more rapidly with concentration than Beers’ law would demand. The ratio of the absorption index a t 650pp to that a t 53opp increases not only with increasing concentration of the metal but also with increasing concentration of the reaction product of the metal with methylamine, and probably also with increasing temperature. 8. These observations can be accounted for by the following hypotheses: The color in all cases is due to electrons combined with the solvent. In ammonia the dissociation of the metal into electrons is nearly complete, and the concentration of electrons uncombine4 with solvent is negligible compared with that of the solvated electrons. In other words, the solvation of the electrons is nearly complete. In methylamine, on the other hand, the concentration of un-ionized metal is no longer negligible and is responsible for the increased absorption a t the shorter wave lengths. The solvation of the electrons in methylamine is incomplete and diminishes as the temperature is increased.
18,573 citations
"Adsorption characteristics for the ..." refers background in this paper
...This model assumes monolayer coverage of adsorbent and adsorption occurs over specific homogenous sites on the adsorbent (Langmuir, 1918)....
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TL;DR: In this paper, it was shown that the rate of adsorption of persistent organic compounds on granular carbon is quite low and the rate is partially a function of the pore size distribution of the adsorbent, of the molecular size and configuration of the solute, and of the relative electrokinetic properties of adsorbate and adsorbents.
Abstract: Laboratory investigations show that rates of adsorption of persistent organic compounds on granular carbon are quite low. Intraparticle diffusion of solute appears to control the rate of uptake, thus the rate is partially a function of the pore size distribution of the adsorbent, of the molecular size and configuration of the solute, and of the relative electrokinetic properties of adsorbate and adsorbent. Systemic factors such as temperature and pH will influence the rates of adsorption; rates increase with increasing temperature and decrease with increasing pH. The effect of initial concentration of solute is of considerable significance, the rate of uptake being a linear function of the square-root of concentration within the range of experimentation. Relative reaction rates also vary reciprocally with the square of the diameter of individual carbon particle for a given weight of carbon. Based on the findings of the research, fluidized-bed operation is suggested as an efficient means of using adsorption for treatment of waters and waste waters.
7,115 citations
"Adsorption characteristics for the ..." refers methods in this paper
...Kinetic data were further analyzed using the intraparticle diffusion model (Weber and Morris, 1963)....
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6,913 citations
01 Jan 1898
4,868 citations
"Adsorption characteristics for the ..." refers background in this paper
...The rate constant of adsorption is determined from the following first order rate expression (Lagergren, 1898): sorption characteristics for the removal of a toxic dye, tartrazine from of Chemistry (2013), http://dx.doi.org/10.1016/j.arabjc.2013.06.005 Table 1 FT-IR study of sawdust in natural form…...
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TL;DR: In this paper, the sorption of two dyes, namely Basic Blue 69 and Acid Blue 25 onto peat has been studied in terms of pseudo-second order and first order mechanisms for chemical sorption as well as an intraparticle diffusion mechanism process.
3,502 citations
"Adsorption characteristics for the ..." refers background in this paper
...The kinetics of the adsorption process may also be described in pseudo-second order rate equation (Ho and McKay, 1998)....
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