Kinetics and mechanism of removal of methylene blue by adsorption on various carbons—a comparative study
TL;DR: In this article, the kinetics and mechanism of methylene blue adsorption on commercial activated carbon and indigenously prepared activated carbons from bamboo dust, coconut shell, groundnut shell, rice husk, and straw, have been studied.
About: This article is published in Dyes and Pigments.The article was published on 2001-10-01. It has received 1762 citations till now. The article focuses on the topics: Freundlich equation & Adsorption.
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TL;DR: It is evident from a literature survey of about 210 recent papers that low-cost sorbents have demonstrated outstanding removal capabilities for certain dyes, and chitosan might be a promising adsorbent for environmental and purification purposes.
3,906 citations
Cites background from "Kinetics and mechanism of removal o..."
..., 2003), straw (Kannan and Sundaram, 2001), rice husk (Mohamed, 2004; Malik, 2003; Guo et al....
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...3 Kannan and Sundaram (2001)...
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..., 2003), straw (Kannan and Sundaram, 2001), rice husk (Mohamed, 2004; Malik, 2003; Guo et al., 2003; Kannan and Sundaram, 2001), rice hulls (Ahmedna et al....
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TL;DR: From a comprehensive literature review, it was found that some LCAs, in addition to having wide availability, have fast kinetics and appreciable adsorption capacities too.
3,163 citations
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
Additional excerpts
...Activated-carbon Methylene blue 2–11 Increase [51]...
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TL;DR: It is evident from a literature survey of about 185 recently published papers that low-cost adsorbents have demonstrated outstanding removal capabilities for MB, and these include agricultural wastes, industrial solid wastes, biomass, clays minerals and zeolites.
2,493 citations
TL;DR: In this article, the utilization of fly ash in construction, as a low-cost adsorbent for the removal of organic compounds, flue gas and metals, light weight aggregate, mine back fill, road sub-base, and zeolite synthesis is discussed.
2,117 citations
References
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Book•
01 Jan 1956
TL;DR: Though it incorporates much new material, this new edition preserves the general character of the book in providing a collection of solutions of the equations of diffusion and describing how these solutions may be obtained.
Abstract: Though it incorporates much new material, this new edition preserves the general character of the book in providing a collection of solutions of the equations of diffusion and describing how these solutions may be obtained
20,495 citations
Book•
01 Jan 1960
TL;DR: In this paper, the authors discuss the nature and properties of liquid interfaces, including the formation of a new phase, nucleation and crystal growth, and the contact angle of surfaces of solids.
Abstract: Capillarity. The Nature and Thermodynamics of Liquid Interfaces. Surface Films on Liquid Substrates. Electrical Aspects of Surface Chemistry. Long--Range Forces. Surfaces of Solids. Surfaces of Solids: Microscopy and Spectroscopy. The Formation of a New Phase--Nucleation and Crystal Growth. The Solid--Liquid Interface--Contact Angle. The Solid--Liquid Interface--Adsorption from Solution. Frication, Lubrication, and Adhesion. Wetting, Flotation, and Detergency. Emulsions, Foams, and Aerosols. Macromolecular Surface Films, Charged Films, and Langmuir--Blodgett Layers. The Solid--Gas Interface--General Considerations. Adsorption of Gases and Vapors on Solids. Chemisorption and Catalysis. Index.
10,790 citations
2,569 citations
TL;DR: In this article, the prosity factor of the pore model is shown to be very important, especially as the porosity decreases, and the importance of the two diffusional models with respect to the predicted breakthrough curves is demonstrated.
Abstract: Most models for fixed bed adsorbers have used either the homogeneoussolid or pore diffusion model for the pellets. When the adsorption isotherm is linear, the two models can lead to identical breakthrough curves. The conditions for this equivalence are presented here. It is shown that one of the bulk flow factors that was included in the formulation of one pore diffusion model will be significant only for feedstreams containing a relatively high concentration of adsorbate. The prosity factor of the pore model is shown to be very important, especially as the porosity decreases. The importance of the two diffusional models with respect to the predicted breakthrough curves is demonstrated. For comparable beds, it is shown that the breakthrough curve based on the homogeneous model is delayed with respect to that based on the pore model at early times, regardless of the shape of the isotherm. Finally, the various possible solutions for an irreverisble isotherm are reviewed for each of the models, and a solution is presented for the general case of a pore model with an outside film resistance.
2,259 citations
Book•
01 Jan 1972
TL;DR: In this article, the Physicochemical processes for water quality contro, the authors propose a method to control the water quality in a water supply system by using Physically-Chemical Processes for Water Quality Control.
Abstract: Physicochemical processes for water quality contro , Physicochemical processes for water quality contro , کتابخانه دیجیتال جندی شاپور اهواز
1,103 citations