Adsorption of benzothiophene sulfone over clay mineral adsorbents in the frame of oxidative desulfurization

Choi, Angelo Earvin Sy; Roces, Susan A.; Dugos, Nathaniel P.; Wan, Meng-Wei

doi:10.1016/j.fuel.2017.05.070

Cited by 48 publications

(26 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among these techniques, adsorptive desulfurization seems to be more promising because of minimal cost of adsorbents, mild operating conditions, accessibility of the adsorbents, and ease of recovery of the spent adsorbents . Various types of adsorbents have been investigated for efficient removal of sulfur compounds from transportation fuels, which include zeolite‐based adsorbents , metals , metal oxides , metal organic frameworks , hydroxyapatite , impregnated activated carbon , , , pure bentonite clay , , oxide composites , activated carbon , resins etc.…”

Section: Introductionmentioning

confidence: 99%

Desulfurization of Model Oil through Adsorption over Activated Charcoal and Bentonite Clay Composites

et al. 2020

View full text Add to dashboard Cite

Adsorption of dibenzothiophene (DBT) from model oil was investigated using composites of pure activated charcoal and pure bentonite clay. DBT adsorption was carried out in batch mode experiments at laboratory scale, where the developed composite materials showed a synergistic effect in removal of DBT from the model oil in terms of improved surface acidity of the pure activated charcoal and mesoporous structure of the pure bentonite clay. Thermodynamics, kinetics, and optimization of various adsorption parameters were investigated. Kinetic analyses proved that DBT adsorption followed pseudo‐second‐order kinetics. To study the thermodynamics of the adsorption, different isotherm adsorption models were applied. The Langmuir isotherm best fitted to the adsorption data. Various thermodynamic parameters were evaluated, including Gibbs free energy, entropy, and enthalpy.

show abstract

Section: Introductionmentioning

confidence: 99%

Desulfurization of Model Oil through Adsorption over Activated Charcoal and Bentonite Clay Composites

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Properties of clays depend strictly on the crystal chemical feature of the clay minerals of which they are composed. However, due to their cation exchange capacity, low cost, and high availability clays were often considered to study the interaction mechanisms with various organic and inorganic pollutants [20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31].…”

Section: Introductionmentioning

confidence: 99%

Kinetic, isotherm and mechanism investigations of the removal of phenols from water by raw and calcined clays

Ouallal

Dehmani

Moussout

et al. 2019

Heliyon

View full text Add to dashboard Cite

In this work, the phenols removal of phenol from water by raw clay (RCG) and calcined one at 1000 °C (CCG) of Goulmima city (Morocco) was investigated. The kinetics and isotherms experiments were also studied at pH = 4. The results indicated that the phenol adsorption reached equilibrium within 3 h, and the removal of phenol was enhanced at the same temperature by CCG (2.932 mg/g) adsorbent, compared to RCG (1.640 mg/g) due to the removal of organic matter by heat treatment, and an increase in adsorption temperature, indicating the endothermic process. The adsorbents were characterized by means of X-ray fluorescence, FTIR, XRD, B.E.T, and TGA/DTA analysis and showed that the clay consists essentially of silica and alumina. The experimental data were examined by using linear and nonlinear forms of the kinetics and the isotherms models. Based on the errors of the calculated values of R 2 (Coefficient of determination), χ 2 (Chi-square) and standard deviation (Δq (%)), it was found that the nonlinear forms of second-order kinetic model and Freundlich and Redlich-Peterson (R–P) isotherm models are best fit the experimental data for both adsorbents. However, the enthalpy ΔH° is less than 20 kJ/mol and the free energy ΔG° has a negative value, which shows that the adsorption is done physically and spontaneously on heterogeneous sites. The interest of this study is the use of FTIR and XRD to determine the effect of calcination on the phenol adsorption mechanism. However, the analysis of both adsorbents, before and after adsorption of phenol, shows that the adsorption mechanism of phenol is provided by the hydrogen bonding of the water molecules.

show abstract

“…In addition to a viable population of microbes with the necessary catabolic capabilities, the contact between the microbes and their target pollutants is crucially necessary for degradation to occur. Clay particles not only have been perceived as one of the best natural adsorbents to adsorb pollutants (Choi, Roces, Dugos, Arcega, & Wan, ; Choi, Roces, Dugos, & Wan, ), but also have been observed to interact strongly and co‐deposite with bacteria when bacterial translocation in soils (Vasiliadou & Chrysikopoulos, ; Yang, Tong, & Kim, ). Hence, clay‐rich soils may be hostile environments for bacterial migration and biodegradation, due to isolation between degrading bacteria and pollutants caused by clay.…”

Section: Remediation Of Organic Contaminationmentioning

confidence: 99%

Advances in applications of rhamnolipids biosurfactant in environmental remediation: A review

Liu

Zhong

Yang³

et al. 2018

Biotech & Bioengineering

173

View full text Add to dashboard Cite

The objective of this review is to provide a comprehensive overview of the advances in the applications of rhamnolipids biosurfactants in soil and ground water remediation for removal of petroleum hydrocarbon and heavy metal contaminants. The properties of rhamnolipids associated with the contaminant removal, that is, solubilization, emulsification, dispersion, foaming, wetting, complexation, and the ability to modify bacterial cell surface properties, were reviewed in the first place. Then current remediation technologies with integration of rhamnolipid were summarized, and the effects and mechanisms for rhamnolipid to facilitate contaminant removal for these technologies were discussed. Finally rhamnolipid-based methods for remediation of the sites co-contaminated by petroleum hydrocarbons and heavy metals were presented and discussed. The review is expected to enhance our understanding on environmental aspects of rhamnolipid and provide some important information to guide the extending use of this fascinating chemical in remediation applications.

show abstract

Adsorption of benzothiophene sulfone over clay mineral adsorbents in the frame of oxidative desulfurization

Cited by 48 publications

References 43 publications

Desulfurization of Model Oil through Adsorption over Activated Charcoal and Bentonite Clay Composites

Desulfurization of Model Oil through Adsorption over Activated Charcoal and Bentonite Clay Composites

Kinetic, isotherm and mechanism investigations of the removal of phenols from water by raw and calcined clays

Advances in applications of rhamnolipids biosurfactant in environmental remediation: A review

Contact Info

Product

Resources

About