Adsorption of benzene, cyclohexane and hexane on ordered mesoporous carbon

Wang, Gang; Dou, Baojuan; Zhang, Zhongshen; Wang, Junhui; Liu, Haier; Hao, Zhengping

doi:10.1016/j.jes.2014.10.015

Cited by 124 publications

(23 citation statements)

References 37 publications

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“…Four criteria for fillers are needed in order to provide good growing conditions for microbes and large-scale application23: (1) great surface area; (2) surface hydrophilicity; (3) stable chemical properties; (4) low cost. Thus, coal columnar activated carbon (CCAC), bamboo wood (BW), and biological ceramsite (BC) have been widely applied as fillers of biofilter24.…”

Section: Methodsmentioning

confidence: 99%

Potential application of an Aspergillus strain in a pilot biofilter for benzene biodegradation

Sun

Zhang

Duan

et al. 2017

Sci Rep

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A biofilter with fungus was developed for efficient degradation of benzene, which can overcome the potential risk of leakage commonly found in such services. Results indicated that the optimum parameter values were temperature 40 °C, pH 6, and 500 mg L−1 of the initial benzene concentration. Besides, the empty bed residence time and inlet load range of biofilter were set to 20 s and 21.23–169.84 g m−3 h−1 respectively. Under these conditions, this biofilter can obtain the maximum removal efficiency of more than 90%, the eliminating capacity could be up to 151.67 g m−3 h−1. Furthermore, scanning electron microscopy was used to investigate three filler materials for packing fungus biofilm. This is the first study introducing an Aspergillus strain for benzene removal and these results highlight that the development of this biofilter has the potential scaling-up application as gas-processing of industrial wastes.

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Section: Methodsmentioning

confidence: 99%

Potential application of an Aspergillus strain in a pilot biofilter for benzene biodegradation

Sun

Zhang

Duan

et al. 2017

Sci Rep

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“…Among the methods of recovery, adsorption is considered one of the most favorable methods due to its low cost and high efficiency, for which, carbonaceous materials have been widely used due to their versatility, selectivity, surface area, variety of porous structure, high capacity and rapid adsorption kinetics [3][4][5][6][7][8][9]. Characterizing activated carbons with the ability to adsorb VOCs allows knowing the interaction between these adsorbents and the adsorbent material [10].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the enthalpy of immersion of five activated carbons with different textural and chemical properties in hexane and cyclohexane is determined in this work. Furthermore, the relationship between the immersion enthalpy with the micropore volume, the content of basic groups (that favor the solid-solvent interaction), the surface area and the E o W o product that is calculated from Equation (3) [10]. The change of the enthalpy in the solid-liquid interaction is calculated taking into account the structure of the solvents, and it is even more interesting because those are C 6 hydrocarbon compounds but they differ in their size and the arrangement of the molecules and this affects the affinity with the solid, the interaction, the entrance to the pores and hence, the adsorption process.…”

Section: Introductionmentioning

confidence: 99%

Immersion Enthalpy of Activated Carbon–Cyclohexane and Activated Carbon–Hexane. Difference in the Solid–Liquid Interaction Enthalpy Due to the Structure of the Solvent

2019

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The enthalpy of immersion for five activated carbons (with different surface chemistry) in cyclohexane and hexane was determined in order to observe the intensity of the solid–liquid interaction. The enthalpy of immersion was related to the properties of activated carbons, such as micropore volume, total basic groups content, and the EoWo product, that characterized each solid-liquid system. The values for the immersion enthalpy were between −21.2 and −91.7 J g−1 for cyclohexane and between −16.4 and −66.1 J g−1 for hexane. It showed greater interaction between the cyclohexane and the activated carbons and it was related to the properties of this adsorbate, such as molecular size and molecular arrangement. The difference in the enthalpy of immersion between the solvents per unit of micropore volume for the set of activated carbons was calculated obtaining a value of −487 J cm−3.

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“…Air pollution (atmosphere) due to human activities has led to the fact that over the past 200 years, the concentration of carbon dioxide has increased by almost 30%. Nevertheless, humanity continues to burn fossil fuels and destroying forests [4,5]. The process is too colossal, that leads to global environmental problems.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, the global consumption of carbon materials is about 1.1 million tons per year and continues to grow at 9% per year [11]. Thus a major amount of activated carbon (80-85%) is produced from non-renewable resources.…”

Section: Introductionmentioning

confidence: 99%

Development and Production of Granular Carbon Sorbents for Sorption of Toxic Gases

Azat

et al. 2017

IJBSBE

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Submit Manuscript | http://medcraveonline.com IntroductionAtmosphere -a system that plays a vital role in many natural processes, such as the formation of the global climate, the composition of the chemical components of the oceans and seas. The penetration of the earth's surface solar radiation and heat the delay in the earthly space, depends on the gas composition of the atmosphere [1]. The problem of air pollution -one of the greatest global challenges faced by humanity. Risk of air pollution -not only in the fact that clean air fall harmful substances harmful to living organisms, but also causes contamination of the Earth's climate change [2,3]. Air pollution (atmosphere) due to human activities has led to the fact that over the past 200 years, the concentration of carbon dioxide has increased by almost 30%. Nevertheless, humanity continues to burn fossil fuels and destroying forests [4,5]. The process is too colossal, that leads to global environmental problems. Air pollution occurs as a result of other human activities. Fuel combustion in thermal power plants is accompanied by the release of sulfur dioxide. With car exhaust gases emitted into the atmosphere of nitrogen oxides. When incomplete combustion carbon monoxide is formed [6,7].At the present stage, for the majority of industrial cleaning and suction air emissions of harmful substances is one of the basic measures to protect the air basin. A feature of most industrial emissions is to have them in addition to solid and liquid particles (dust, fumes and mists) a large amount of harmful gaseous components. Clean gas flows from such impurities and requires specific equipment corresponding theoretical knowledge for the development of gas purification technology [8]. Among the methods of neutralization of industrial emissions increasingly becomes important adsorption way to almost completely remove the impurities from gas streams. In use solid adsorbents as high surface area materials formed into pellets (spheres, tablets, cylinders, etc.), or are in finely divided form [9,10].In this connection, the production and consumption of the carbon materials has steadily increased. In particular, the global consumption of carbon materials is about 1.1 million tons per year and continues to grow at 9% per year [11]. Thus a major amount of activated carbon (80-85%) is produced from non-renewable resources. Large range of carbon materials obtained on the basis of large-tonnage waste of chemical and mechanical processing of wood: sawdust, bark, logging waste and technical lignins [12,13]. In the laboratories of the Institute of Combustion Problems carried out work on the production of porous carbon materials from waste materials rostitelnogo. Such as rice hulls, walnut shells, apricot seeds, which are renewable natural materials [14,15]. But it is not carried out work on the development of producing granular sorbents. In this regard, the work order is possible to obtain by extrusion the granular sorbent and determining the physicochemical properties of the pellets. Е...

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Adsorption of benzene, cyclohexane and hexane on ordered mesoporous carbon

Cited by 124 publications

References 37 publications

Potential application of an Aspergillus strain in a pilot biofilter for benzene biodegradation

Potential application of an Aspergillus strain in a pilot biofilter for benzene biodegradation

Immersion Enthalpy of Activated Carbon–Cyclohexane and Activated Carbon–Hexane. Difference in the Solid–Liquid Interaction Enthalpy Due to the Structure of the Solvent

Development and Production of Granular Carbon Sorbents for Sorption of Toxic Gases

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