Adsorption behavior of methylene blue on carbon nanotubes.

doi:10.1016/J.BIORTECH.2009.12.042

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Adsorption behavior of methylene blue on carbon nanotubes.

Journal Article•DOI•

Adsorption behavior of methylene blue on carbon nanotubes.

Yunjin Yao¹, Feifei Xu¹, Ming Chen¹, Zhongxiao Xu¹, Zhiwen Zhu¹ - Show less +1 more•Institutions (1)

Hefei University of Technology¹

01 May 2010-Bioresource Technology (Elsevier)-Vol. 101, Iss: 9, pp 3040-3046

TL;DR: Results suggested that the methylene blue adsorption on CNTs was a spontaneous and endothermic process.

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About: This article is published in Bioresource Technology.The article was published on 2010-05-01. It has received 684 citations till now. The article focuses on the topics: Freundlich equation & Langmuir.

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Journal Article•DOI•

Adsorptive removal of dyes from aqueous solution onto carbon nanotubes: a review.

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Vinod Kumar Gupta¹, Rajeev Kumar², Arunima Nayak¹, Tawfik A. Saleh³, M.A. Barakat² - Show less +1 more•Institutions (3)

Indian Institute of Technology Roorkee¹, King Abdulaziz University², King Fahd University of Petroleum and Minerals³

01 Jun 2013-Advances in Colloid and Interface Science

TL;DR: It is evident from the literature that CNT based nanosorbents have shown good potential for the removal of dyes from aqueous solution, however, still more research work should be focused on the development of cost effective, higher efficient and environmental friendly CNTbased nanOSorbents for their commercial applications.

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1,028 citations

Journal Article•DOI•

Adsorption of methylene blue by a high-efficiency adsorbent (polydopamine microspheres): Kinetics, isotherm, thermodynamics and mechanism analysis

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Jianwei Fu¹, Zhonghui Chen¹, Minghuan Wang¹, Shujun Liu¹, Jing-Hui Zhang¹, Jianan Zhang¹, Runping Han¹, Qun Xu¹ - Show less +4 more•Institutions (1)

Zhengzhou University¹

01 Jan 2015-Chemical Engineering Journal

TL;DR: In this paper, polydopamine (PDA) microspheres were synthesized by a facile oxidative polymerization method and used as a high-efficiency adsorbent for the removal of a cationic dye (methylene blue, MB) from aqueous solution.

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852 citations

Journal Article•DOI•

Adsorption of methylene blue from aqueous solution by graphene.

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Tonghao Liu¹, Yanhui Li¹, Qiuju Du¹, Jiankun Sun¹, Yuqin Jiao¹, Guangming Yang¹, Zonghua Wang¹, Yanzhi Xia¹, Wei Zhang², Kunlin Wang², Hongwei Zhu², Dehai Wu² - Show less +8 more•Institutions (2)

Qingdao University¹, Tsinghua University²

01 Feb 2012-Colloids and Surfaces B: Biointerfaces

TL;DR: The thermodynamic parameters indicated that the adsorption of methylene blue onto graphene was an endothermic and spontaneous process and graphene is a good adsorbent for the adsOrption of MB.

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634 citations

Journal Article•DOI•

Enhanced Adsorptive Removal of Methyl Orange and Methylene Blue from Aqueous Solution by Alkali-Activated Multiwalled Carbon Nanotubes

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Jie Ma¹, Fei Yu², Fei Yu¹, Lu Zhou¹, Lu Jin¹, Mingxuan Yang¹, Jingshuai Luan¹, Yuhang Tang¹, Fan Haibo¹, Zhiwen Yuan¹, Junhong Chen¹, Junhong Chen³ - Show less +8 more•Institutions (3)

Tongji University¹, Shanghai Jiao Tong University², University of Wisconsin–Milwaukee³

24 Oct 2012-ACS Applied Materials & Interfaces

TL;DR: Experimental results indicated that CNTs-A have excellent adsorption capacity for methyl orange and methylene blue, and Kinetic regression results shown that the adsorbent kinetic was more accurately represented by a pseudo second-order model than Langmuir isotherm model.

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Abstract: An alkali-acitvated method was explored to synthesize activated carbon nanotubes (CNTs-A) with a high specific surface area (SSA), and a large number of mesopores. The resulting CNTs-A were used as an adsorbent material for removal of anionic and cationic dyes in aqueous solutions. Experimental results indicated that CNTs-A have excellent adsorption capacity for methyl orange (149 mg/g) and methylene blue (399 mg/g). Alkali-activation treatment of CNTs increased the SSA and pore volume (PV), and introduced oxygen-containing functional groups on the surface of CNTs-A, which would be beneficial to improving the adsorption affinity of CNTs-A for removal of dyes. Kinetic regression results shown that the adsorption kinetic was more accurately represented by a pseudo second-order model. The overall adsorption process was jointly controlled by external mass transfer and intra-particle diffusion, and intra-particle diffusion played a dominant role. Freundlich isotherm model showed a better fit with adsorption da...

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617 citations

Journal Article•DOI•

Removal of methylene blue from aqueous solution by graphene oxide.

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Sheng-Tao Yang¹, Sheng Chen¹, Yanli Chang¹, Aoneng Cao¹, Yuanfang Liu², Yuanfang Liu¹, Haifang Wang¹ - Show less +3 more•Institutions (2)

Shanghai University¹, Peking University²

01 Jul 2011

TL;DR: Graphene oxide is a highly effective absorbent of methylene blue (MB) and can be used to remove MB from aqueous solution and the results indicate that GO can be applied in treating industrial effluent and contaminated natural water.

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Abstract: Graphene oxide (GO) is a highly effective absorbent of methylene blue (MB) and can be used to remove MB from aqueous solution. A huge absorption capacity of 714 mg/g is observed. At initial MB concentrations lower than 250 mg/L, the removal efficiency is higher than 99% and the solution can be decolorized to nearly colorless. The removal process is fast and more efficient at lower temperatures and higher pH values. The increase of ionic strength and the presence of dissolved organic matter would further enhance the removal process when MB concentration is high. The results indicate that GO can be applied in treating industrial effluent and contaminated natural water. The implications to graphene-based environmental technologies are discussed.

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593 citations

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References

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Journal Article•DOI•

The adsorption of gases on plane surfaces of glass, mica and platinum.

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Irving Langmuir

01 Sep 1918-Journal of the American Chemical Society

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.

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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.

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18,573 citations

"Adsorption behavior of methylene bl..." refers background in this paper

...The Langmuir isotherm (Langmuir, 1918) is represented by the following linear equation:...
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...The Langmuir isotherm (Langmuir, 1918) is represented by the following linear equation: Ce qe ¼ 1 q0KL þ 1 q0 Ce ð3Þ where Ce (mg/L) is the equilibrium concentration, qe (mg/g) the amount of adsorbate adsorbed per unit mass of adsorbate, and q0 and KL are the Langmuir constants related to…...
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Journal Article•DOI•

Non-conventional low-cost adsorbents for dye removal: A review

[...]

Grégorio Crini¹•Institutions (1)

University of Franche-Comté¹

01 Jun 2006-Bioresource Technology

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.

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3,906 citations

"Adsorption behavior of methylene bl..." refers background in this paper

...The complex aromatic structures of dyes make them more stable and more difficult to remove from the effluents discharged into water bodies (Crini, 2006)....
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Journal Article•DOI•

Pore- and Solid-Diffusion Kinetics in Fixed-Bed Adsorption under Constant-Pattern Conditions

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Kenneth R. Hall, L. C. Eagleton, Andreas Acrivos, Theodore Vermeulen

01 May 1966-Industrial & Engineering Chemistry Fundamentals

2,569 citations

"Adsorption behavior of methylene bl..." refers background in this paper

...Another important parameter, RL, called the separation factor or equilibrium parameter, also evaluated in this study, is determined from the relation (Hall et al., 1966):...
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...Another important parameter, RL, called the separation factor or equilibrium parameter, also evaluated in this study, is determined from the relation (Hall et al., 1966): RL ¼ 1 1þ bC0 ð4Þ where KL is the Langmuir constant and C0 (mg/L) is the highest dye concentration....
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Journal Article•DOI•

Kinetics and mechanism of removal of methylene blue by adsorption on various carbons—a comparative study

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Nagarethinam Kannan¹, M. Meenakshi Sundaram¹•Institutions (1)

Ayya Nadar Janaki Ammal College¹

01 Oct 2001-Dyes and Pigments

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.

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1,762 citations

"Adsorption behavior of methylene bl..." refers background in this paper

...The values of C were helpful in determining the boundary thickness: a larger C value corresponded to a greater boundary layer diffusion effect (Kannan and Sundaram, 2001)....
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Journal Article•DOI•

Equilibrium, kinetics, mechanism, and process design for the sorption of methylene blue onto rice husk

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V. Vadivelan¹, K. Vasanth Kumar¹•Institutions (1)

Anna University¹

01 Jun 2005-Journal of Colloid and Interface Science

TL;DR: Analysis of sorption data using a Boyd plot confirms that external mass transfer is the rate limiting step in the sorption process.

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1,455 citations

"Adsorption behavior of methylene bl..." refers background in this paper

...Previously some researchers investigated several adsorbents such as wheat shells (Bulut and AydIn, 2006), rice husk (Vadivelan and Kumar, 2005), Indian rosewood sawdust (Garg et al....
[...]
...…in the range of 35.4–64.7 mg/g. Previously some researchers investigated several adsorbents such as wheat shells (Bulut and AydIn, 2006), rice husk (Vadivelan and Kumar, 2005), Indian rosewood sawdust (Garg et al., 2004), neem leaf powder (Bhattacharyya and Sharma, 2005), pyrophyllite (Gucek et…...
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