Desulphurization of Liquid Fuels by Selective Adsorption Through Mineral Clays as Adsorbents

Shakirullah, Mohammad; Ahmad, Waqas; Ahmad, Imtiaz; Ishaq, Mohammad; Khan, M. I

doi:10.4067/s0717-97072012000400009

Cited by 16 publications

(14 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Various physico-chemical properties of kerosene and diesel samples were determined, results are provided in the Table 1, which shows that the samples meets the standard kerosene and diesel fuel specifications [11,12]. The focus of the present study was on the removal of the sulfur content.…”

Section: Characterization Of Kerosene and Diesel Oil Samplesmentioning

confidence: 99%

Adsorptive desulphurization study of liquid fuels using Tin (Sn) impregnated activated charcoal

Shah

Ahmad

2016

Journal of Hazardous Materials

View full text Add to dashboard Cite

Keeping in view the growing concern regarding desulphurization of petroleum products, the present study was under taken to investigate the efficiency of tin impregnated activated charcoal (Sn-AC) as a potential adsorbent for the desulphurization of model and real commercial straight run kerosene and diesel oil samples. The adsorbent Sn-AC was prepared by wet impregnation process in the laboratory and characterized by SEM, EDX and surface area analysis. Initial experiments were carried out using model oil, which was prepared by dissolving dibenzothiophene (DBT) in cyclohexane, the optimum conditions for desulfurization were found to be, 60°C temperature, 1h contact time and adsorbent dosage of 0.8g, under which about 99.4% of DBT removal was attained. Under optimized conditions the desulfurization of real oil i.e., kerosene and diesel oil was also investigated. Kinetic studies revealed that DBT adsorption followed pseudo second order kinetics and the data best fits in the Langmuir adsorption isotherm as compared to Freundlich adsorption isotherm model. The adsorbent could be easily regenerated simply by washing with toluene for a multiple cycles and reused without losing its efficiency.

show abstract

Section: Characterization Of Kerosene and Diesel Oil Samplesmentioning

confidence: 99%

Adsorptive desulphurization study of liquid fuels using Tin (Sn) impregnated activated charcoal

Shah

Ahmad

2016

Journal of Hazardous Materials

View full text Add to dashboard Cite

show abstract

“…Peaks at around 2,850 cm −1 and 2,920 cm −1 appear due to symmetrical and asymmetrical methylene groups stretching vibrations present in saturated aliphatic compounds . Peaks in range 1,500–1,600 cm −1 corresponds to CC stretching vibrations observed in aromatic compounds . A sharp peak is found in proximity of 1,457 cm −1 , indicating presence of asphaltenes .…”

Section: Resultsmentioning

confidence: 96%

“…[51][52][53] Peaks in range 1,500-1,600 cm −1 corresponds to C¼C stretching vibrations observed in aromatic compounds. 54 A sharp peak is found in proximity of 1,457 cm −1 , indicating presence of asphaltenes. 55 It has been observed from FTIR plots that after emulsification, the major saturate peak at 720 cm −1 has disappeared probably due to dissolution of paraffin wax, and there has been introduction of new peak in the range 1,000-1,172 cm −1 .…”

Section: Surface Tension (Sft) Of O/w Emulsionsmentioning

confidence: 95%

Study the influence of sodium dodecyl sulfate on emulsification of heavy and waxy crude oils to improve their flow ability in low temperature conditions

Sharma

Deka

Mandal

et al. 2018

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

Transportation of heavy and waxy crude oils through pipelines is a problem in many regions of the world where low temperatures are observed usually in offshore conditions due to wax and asphaltene precipitation. Transporting them as oil‐in‐water (O/W) emulsion through pipelines is one of the feasible flow assurance solutions. In this research work, O/W emulsions using anionic surfactant sodium dodecyl sulfate are prepared for two Indian crude oil samples having significant asphaltene and wax deposition potential and effect of emulsification on the flow properties of these crude oils are thoroughly analyzed. It is found that the prepared emulsions have very stable phase volume composition up to 50 days at ambient conditions, and they are thermally stable in the temperature range 20–45°C. Emulsions of heavy crude oil are found to be relatively more stable than that of waxy crude with time and temperatures. Fifty percent (v/v) is the observed optimized oil content in the prepared o/w emulsions for both the crude oils at optimum surfactant concentration that is critical micelle concentration (CMC). The prepared emulsions have viscosities as low as 0.01 Pa s and pour point as low as less than 0°C, ensuring easy flow at low temperatures, suited for pipeline transportation at subsea conditions. Interfacial tension and surface tension values of waxy crude‐water system and its o/w emulsions respectively are higher than that of heavy crude‐water system and its O/W emulsions, which indicate difficulty in waxy crude oil transportation compared with heavy crude oil.

show abstract

“…18 Montmorillonite, kaolinite, vermiculite, and palygorskite were employed for the removal of sulfur compounds from petroleum fractions. 16 The kaolinite showed the highest removal level, reaching desulfur- ization of 60%, 76%, and 64% in crude oil, kerosene, and diesel samples, respectively. Ha evaluated the removal of sulfur compounds (2,4-dimethyldibenzothiophene and dibenzothiophene) from model fuels by modified clays.…”

Section: Introductionmentioning

confidence: 91%

Removal of Sulfur and Nitrogen Compounds from Diesel Oil by Adsorption Using Clays as Adsorbents

Baia

Souza

et al. 2017

Energy Fuels

View full text Add to dashboard Cite

Stringent specifications for sulfur compounds content and the need to use oils with large amount of nitrogen compounds are challenges for fuel producers. Adsorption is an alternative process to remove sulfur and nitrogen compounds and clays are promising adsorbents for this removal. In this work, the adsorption performance of different commercial claysClay A (attapulgite), Clay B (bentonite), and Clay C (bentonite)for the removal of sulfur and nitrogen compounds from a real diesel stream was studied through kinetic and isothermal experiments. The bentonite clays showed the best adsorptive capacity for the removal of sulfur and nitrogen compounds, probably due to the presence of Brønsted acid sites. The highest adsorption capacity was observed for Clay B: 0.174 mol kg −1 for sulfur compounds and 0.127 mol kg −1 for nitrogen compounds. Clay A was more selective to the removal of nitrogen compounds. Equilibrium data showed that adsorbate−absorbate and adsorbate−surface interactions predominate for sulfur and nitrogen compounds, respectively, for Clay A and Clay B.

show abstract

Desulphurization of Liquid Fuels by Selective Adsorption Through Mineral Clays as Adsorbents

Cited by 16 publications

References 19 publications

Adsorptive desulphurization study of liquid fuels using Tin (Sn) impregnated activated charcoal

Adsorptive desulphurization study of liquid fuels using Tin (Sn) impregnated activated charcoal

Study the influence of sodium dodecyl sulfate on emulsification of heavy and waxy crude oils to improve their flow ability in low temperature conditions

Removal of Sulfur and Nitrogen Compounds from Diesel Oil by Adsorption Using Clays as Adsorbents

Contact Info

Product

Resources

About