Adsorption of methylene blue on adsorbent materials produced from cotton stalk
TL;DR: In this paper, the authors compared the performance of three types of adsorbents for removing methylene blue (MB) from aqueous solutions: cotton stalk (CS), sulphuric acid treated cotton stalks (SCS) and phosphoric acid-treated cotton stinger (PCS).
About: This article is published in Chemical Engineering Journal.The article was published on 2011-08-01. It has received 296 citations till now. The article focuses on the topics: Freundlich equation & Adsorption.
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TL;DR: In this paper, three different carbonaceous materials, activated carbon, graphene oxide, and multi-walled carbon nanotubes, were modified by nitric acid and used as adsorbents for the removal of methylene blue dye from aqueous solution.
Abstract: Three different carbonaceous materials, activated carbon, graphene oxide, and multi-walled carbon nanotubes, were modified by nitric acid and used as adsorbents for the removal of methylene blue dye from aqueous solution. The adsorbents were characterized by N2 adsorption/desorption isotherms, infrared spectroscopy, particle size, and zeta potential measurements. Batch adsorption experiments were carried out to study the effect of solution pH and contact time on dye adsorption properties. The kinetic studies showed that the adsorption data followed a pseudo second-order kinetic model. The isotherm analysis indicated that the adsorption data can be represented by Langmuir isotherm model. The remarkably strong adsorption capacity normalized by the BET surface area of graphene oxide and carbon nanotubes can be attributed to π–π electron donor acceptor interaction and electrostatic attraction.
716 citations
TL;DR: The real wastewater experiment, the regeneration study and the comparative cost analysis showed that the RL-GO composites could be a cost-effective and promising sorbent for MB wastewater treatment owing to its high efficiency and excellent reusability.
509 citations
Cites background from "Adsorption of methylene blue on ads..."
...Furthermore, this value is also much higher than other adsorbents such as cotton stalk (Deng et al., 2011), carbon nanotube (Yao et al....
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...Furthermore, this value is also much higher than other adsorbents such as cotton stalk (Deng et al., 2011), carbon nanotube (Yao et al., 2010), graphene (Liu et al., 2012a), graphene coated biochar (Zhang et al., 2012), graphene oxide (Li et al., 2013a) and magnetic chitosan/graphene oxide (Fan et…...
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TL;DR: In this paper, three adsorbents, namely, bentonite-alginate beads, activated carbon-bentonite alginates beads, and activated carbon activated carbon carbon-binite-antilinate beads (ABA), were prepared for the adsorption of methylene blue (MB) and the effects of solution pH, temperature, initial concentration and contact time were investigated.
277 citations
TL;DR: In this paper, the effect of ionic strength on the adsorption of three dyes onto three resins were designed and investigated comparatively and comprehensively, and the selected resins with the same matrix were negatively charged D001, neutral AB-8 and positively charged 717 resins.
249 citations
TL;DR: In this article, the potential of citrus limetta peel (CLP) as a low cost adsorbent for the removal of Methylene blue (MB) dye was investigated.
Abstract: In the present work, the potential of citrus limetta peel (CLP) as a low cost adsorbent for the removal of Methylene blue (MB) dye was investigated. Batch adsorption studies were conducted to find out how adsorption was affected by various factors like contact time, initial dye concentration, adsorbent dosage, pH and temperature. The experimental data was analysed in the light of Langmuir, Freundlich and Temkin isotherm models. The data was found to be best represented by Langmuir adsorption isotherm with maximum adsorption capacity for monolayer coverage was found to be 227.3 mg/g. The data were analysed in the light of different available kinetic models and was observed to be best followed pseudo-second order kinetics. Desorption of MB-loaded CLP was studied with various desorbing agents and HCl was found to be most effective desorbing agent among HCl, NaOH, NaCl, CH3COOH and deionised doubly distilled water (DDDW). Results suggest that CLP is a very effective low cost adsorbent for the removal of dyes from wastewater.
226 citations
References
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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: Kinetic study showed that the adsorption of dye on coir pith carbon was a gradual process and pH effect and desorption studies suggest that chemisorption might be the major mode of the Adsorption process.
868 citations
TL;DR: Sawdust, a relatively abundant and inexpensive material is currently being investigated as an adsorbent to remove contaminants from water as discussed by the authors, and chemical substances including dyes, oil, toxic salts and heavy metals can be removed very effectively with the organic material.
849 citations
TL;DR: In this article, the potential use of Indian Rosewood ( Dalbergia sissoo ) sawdust, pretreated with formaldehyde and sulphuric acid, for the removal of methylene blue dye from simulated wastewater was investigated.
720 citations
TL;DR: The results indicated that the garlic peel could be an alternative for more costly adsorbents used for dye removal, and was fitted well with the Freundlich isotherm.
690 citations