Response surface methodology optimization of adsorptive desulfurization on nickel/activated carbon
TL;DR: In this paper, a face centred central composite design (CCD) was used to statistically visualize the complex interactions of concentration, column length, dosage, and flow rate on the adsorption of dibenzothiophene.
About: This article is published in Chemical Engineering Journal.The article was published on 2017-04-01. It has received 223 citations till now. The article focuses on the topics: Central composite design & Response surface methodology.
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TL;DR: In this article, an as-synthesized activated carbon-manganese oxide nanocomposite consisting 10% optimum metal loading showed significant adsorptive desulfurization efficiency.
196 citations
TL;DR: In this paper, a multivalent Mn3O4-MnO2 composite catalyst was synthesized and employed for peroxymonosulfate (PMS) activation to realize ciprofloxacin (CIP) degradation.
166 citations
TL;DR: In this paper, a facile hydrothermal method to synthesize polyethylenimine-modified activated carbon derived from waste tires (PEI-AC) was reported, and the obtained material was characterized by Fourier transform infrared spectroscopy (FTIR), Scanning Electron microscopy (SEM) equipped with Energy-Dispersive X-ray spectroscope (EDX), Thermogravimetric analyzer (TGA), and Brunauer-Emmett-Teller (BET) analyzer.
Abstract: This study reports a facile hydrothermal method to synthesize polyethylenimine-modified activated carbon derived from waste tires (PEI-AC). The obtained material was characterized by Fourier transform infrared spectroscopy (FTIR), Scanning Electron microscopy (SEM) equipped with Energy-Dispersive X-ray spectroscopy (EDX), Thermogravimetric analyzer (TGA), and Brunauer–Emmett–Teller (BET) analyzer. The adsorption efficiency of the new adsorbent for the removal of Hg(II) was evaluated under the effects of its concentration, temperature, adsorption contact time, medium pH and re-usability. The optimum experimental conditions were found under response surface methodology (RSM)using central composite design (CCD). The results of the study show very good adsorption performance and high regeneration efficiency; the adsorption data fitted well into pseudo-second order model. The Langmuir monolayer capacity was determined to be 16.39 mg g−1. The exothermic enthalpy change (ΔH) of −24.65 kJ mol−1 and negative Gibbs free energy change (ΔG) assured the viability of the adsorption process. Therefore, the material leverages its cheap source and ease of regeneration in combination with its high and fast uptake capacities to offer a great promise for wastewater remediation.
159 citations
TL;DR: In this article, a review of the latest development in ADS is presented, where Zeolite, metal oxide, metal-organic framework, mesoporous material, and carbon are assessed for desulfurization of the model and real feedstocks.
135 citations
TL;DR: In this paper, microwave vacuum pyrolysis combined with NaOH-KOH activation was used to produce highly porous activated carbon (AC) from palm residue (i.e. palm kernel shell, PKS) for use as an adsorbent to treat POME.
120 citations
References
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TL;DR: A review about the application of response surface methodology (RSM) in the optimization of analytical methods is presented and the theoretical principles and steps for its application are described to introduce readers to this multivariate statistical technique.
4,338 citations
TL;DR: In this article, an extensive list of low-cost adsorbents (prepared by utilizing different types of waste materials) from vast literature has been compiled and their adsorption capacities for various aquatic pollutants as available in the literature are presented.
1,044 citations
TL;DR: In this paper, the performance of three typical adsorbents (activated carbon, activated alumina and nickel-based adsorbent) in a fixed-bed system for diesel fuel desulfurization and denitrogenation was investigated.
534 citations
01 Nov 2010
TL;DR: Graphene oxide (GO) can be aggregated by Cu(2+) in aqueous solution with a huge Cu( 2+) absorption capacity, which is around 10 times of that of active carbon.
Abstract: Graphene oxide (GO) can be aggregated by Cu(2+) in aqueous solution with a huge Cu(2+) absorption capacity. The Cu(2+) causes GO sheets to be folded and also to form large aggregates that were characterized by confocal microscopy and atomic force microscopy. The folding/aggregation is most likely triggered by the coordination between GO and Cu(2+). The equilibrium Cu(2+) concentrations and equilibrium absorption capacity of GO were measured to estimate the maximum absorption capacity of GO for Cu(2+) and the absorption model. GO has a huge absorption capacity for Cu(2+), which is around 10 times of that of active carbon. Representative results are presented and the implication to Cu(2+) removal is discussed.
524 citations