Effect of the carboxymethyl chitosan on removal of nickel and vanadium from crude oil in the presence of microwave irradiation

Wang, Shuangcheng; Xu, Xiang; Yang, Jingyi; Gao, Jin‐Sheng

doi:10.1016/j.fuproc.2010.11.001

Cited by 39 publications

(23 citation statements)

References 7 publications

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“…Optimization of microwave-induced demulsification of emulsions is typically based on microwave power and time [5,72,238,246,247]. Ordinarily, the higher the microwave irradiation power, the more rapidly the emulsion can break and also the greater the phase separation occurs [65,236].…”

Section: Effectual Factorsmentioning

confidence: 99%

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Demulsification techniques of water-in-oil and oil-in-water emulsions in petroleum industry

Zolfaghari

Fakhru’l‐Razi

Abdullah

et al. 2016

Separation and Purification Technology

555

255

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The difficulties associated with transportation and refining of crude oil emulsions as well as produced water discharge limitations are among the conspicuous clues that have led the oilfield researchers to probe into practical demulsification methods for many decades.Inconsistent research outcomes observed in the literature for a particular demulsification method of a typical emulsion (i.e., water-in-oil or oil-in-water) arise not only from the varied influential parameters associated (such as salinity, temperature, pH, dispersed phase content, emulsifier/demulsifier concentration, droplet size, etc.), but also from the diverse types of emulsion constituents (namely oil, surfactant, salt, alkali, polymer, fine solids, and/or other chemicals/impurities). Being the main component in formation of stabilizing interfacial film surrounding the dispersed phase droplets, surfactant is the most predominant contributor to emulsion stability, extent of which depends on its nature (being ionic or nonionic, and its degree of hydrophilicity/lipophilicity), concentration and interaction with other surface-active agents in the emulsion, as well as on the salinity, temperature, and pH of the system. In this paper, it is endeavored to overview some of the most commonly exploited demulsification techniques (i.e., chemical, biological, membrane, electrical, and microwave irradiation) on both the oilfield and synthetic emulsions, taking into account the emulsion-stabilizing anddestabilizing effects with regard to the dominant parameters plus the emulsion composition.Further, the variations occurring in interfacial properties of emulsions by demulsification process are discussed. Finally, the mechanism(s) involved in emulsions resolution achieved by each method is elucidated. Clearly, the most efficient demulsification approach is the one able to attain desirable separation efficiency while complying with the environmental regulations and imposing the least economic burden on the petroleum industry.

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Section: Effectual Factorsmentioning

confidence: 99%

“…However, physical treatments of emulsions have often been employed in conjunction with other (physical, chemical, or biological) separation methods to establish hybrid systems in order to improve the destabilization of emulsions up to satisfactory levels [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Demulsification techniques of water-in-oil and oil-in-water emulsions in petroleum industry

Zolfaghari

Fakhru’l‐Razi

Abdullah

et al. 2016

Separation and Purification Technology

555

255

View full text Add to dashboard Cite

show abstract

“…But sulfur and nickel compounds in crude oil are oil-soluble organic compounds, and cannot be removed by electric desalting, So petroleum quality faces severe challenge, which demands urgent research and development of processing techniques to produce high quality oil products [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous removal of sulphide and nickel by the compound of Chitosan Schiff Base from crude oil under microwave irradiation

Wang

Peng

et al. 2013

Journal of Industrial and Engineering Chemistry

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“…Carboxymethylation of chitosan is very attractive method among the various chemical modifications, because it introduces active carboxyl (-COOH) groups into the molecule. This leads to an increase in the adsorption capacity of chitosan for heavy, transition metals and dyes [29,30]. But, carboxymethyl chitosan cannot regenerate after adsorption because it is soluble in water, which is the main drawback of carboxymethyl chitosan to use an effective adsorbent for dye waste water treatment.…”

Section: Introductionmentioning

confidence: 99%

Recyclable Crosslinked O-Carboxymethyl Chitosan for Removal of Cationic Dye from Aqueous Solutions

Manish¹

2012

Hydrol Current Res

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Carboxymethyl chitosan have been investigated for many biomedical applications as well as for the removal of metal ion and cationic dye from aqueous solution. But, carboxymethyl chitosan is soluble in water and therefore, it is difficult to reuse. The aim of the work was to prepare cross-linked O-carboxymethyl chitosan (OCMCTS) with different degree of substitution for the removal of Crystal Violet (CV) cationic dye from aqueous solution. The influence of the parameters such as initial pH of the dye solution, initial dye concentration, adsorption temperature, degree of substitution of OCMCTS and adsorption time on the adsorption capacity was studied using batch method. The results showed that the adsorption capacity of modified CTS increased from 28.49 mg/g to 239.54 mg/g. The kinetic study of OCMCTS showed that it follows the pseudo-second-order kinetic rather than pseudo-first-order kinetic. The adsorption equilibrium showed that the experimental data could be best fitted to the Langmuir equation. The desorbed OCMCTS can be reused to absorb the cationic dyes. Therefore, cross-linked OCMCTS may be favorable adsorbent and could be employed as low-cost alternatives for the removal of cationic dyes in wastewater treatment.

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Effect of the carboxymethyl chitosan on removal of nickel and vanadium from crude oil in the presence of microwave irradiation

Cited by 39 publications

References 7 publications

Demulsification techniques of water-in-oil and oil-in-water emulsions in petroleum industry

Demulsification techniques of water-in-oil and oil-in-water emulsions in petroleum industry

Simultaneous removal of sulphide and nickel by the compound of Chitosan Schiff Base from crude oil under microwave irradiation

Recyclable Crosslinked O-Carboxymethyl Chitosan for Removal of Cationic Dye from Aqueous Solutions

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