Oxidative desulfurization of tire pyrolysis oil

Ahmad, Shahzad; Imran, Ahmad Muhammad; Naeem, Khawar; Humayun, Muhammad; Sebt-E-Zaeem,; Farrukh, Faheem

doi:10.2298/ciceq150609038a

Cited by 21 publications

(15 citation statements)

References 21 publications

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“…However, attapulgite clay was more selective to remove nitrogen compounds [24]. On the other hand, Ahmad et al [25] concluded that fuller's earth and calcium oxide were ineffective in desulfurization for the treatment of oils found during the pyrolysis of used tires.…”

Section: Desulfurizationmentioning

confidence: 99%

Clay Adsorption Perspective on Petroleum Refining Industry

Emam¹

2018

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Clays are the most utilized minerals and considered very efficient and economical sorbents according to their chemical and physical properties. Clays are enjoying rapid popularity in the petroleum refining industry for the various processes such as adsorption and separation. Removal of many components such as sulfur, heavy metals, colors and separation of different hydrocarbon groups of crude oil and petroleum fractions can be carried out by clay adsorption. The present review summarizes the using of clay as adsorbent in several petroleum refining processes such as desulphurization, deasphalting, waste oil recovery, bleaching, corrosion reduction, heavy metals removal and other. One of the simplest, easiest and efficient separation processes used in different industries is adsorption. Review results show that different types of clay are obtainable and used in many applications. Clay adsorption can be enhanced the treatment and finishing of crude oils and petroleum fractions through several modifications such as metals impregnation, acid and thermal activations. Bentonite clays promote the highest adsorption capacity to remove sulfur and a high bleaching potential. Attapulgite clay is effective in decolorization and neutralization any petroleum oil. Impregnation of NiO nanoparticles into kaolin improves the asphaltenes adsorption. Several modified as well as unmodified clays promote the highest removal efficiency of Ni and V from crude oil. Additionally, the adsorption pre-treatment affects the reduction in corrosion yields and the corrosion rate.

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Section: Desulfurizationmentioning

confidence: 99%

Clay Adsorption Perspective on Petroleum Refining Industry

Emam¹

2018

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“…Therefore, removal of such sulfur-containing compounds is imperative for the production of green fuel oils and to meet the new standards of sulfur content (10-15 ppm) as per the recommendations of the United State Protection Agency (USEPA), given the environmental concerns surrounding sulfur [1,2,6,7]. Several techniques, such as hydrodesulfurization (HDS), biodesulfurization (BDS), adsorption, and oxidative desulfurization (ODS), have been applied to remove sulfur-containing compounds from fuel oil [8]. At present, the conventional HDS process is a well-established method at the industrial level.…”

Section: Introductionmentioning

confidence: 99%

“…At present, the conventional HDS process is a well-established method at the industrial level. Hydrodesulfurizarion reactions are carried out in the presence of transition metallic (Ni, Co, and Mo) catalysts at high temperature (up to 400 • C) and pressure (up to 100 atm) using hydrogen gas [8][9][10]. It is a well-known process for removal of aliphatic and acyclic sulfur-containing organic compounds.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, it does not require expensive hydrogen [19][20][21][22]. Several techniques, such as hydrodesulfurization (HDS), biodesulfurization (BDS), adsorption, and oxidative desulfurization (ODS), have been applied to remove sulfur-containing compounds from fuel oil [8]. At present, the conventional HDS process is a well-established method at the industrial level.…”

Section: Introductionmentioning

confidence: 99%

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A Comprehensive Review on Catalytic Oxidative Desulfurization of Liquid Fuel Oil

2019

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The production of green fuel oil is of the utmost importance for maintaining a healthy life and environment in the current world. Effective and complete removal of sulfur refractory compounds (such as 4,6-dimethyldibenzothiophene and other alkyl-substituted thiophene derivatives) from fuel oil is essential to meet the new requirements of sulfur standards. Several techniques have been proposed for desulfurization of fuel oil, such as hydrodesulfurization (HDS), selective adsorption, extractive distillation, biodesulfurization, and oxidative desulfurization (ODS). The removal of sulfur by the HDS process requires higher investment costs, high reaction temperature (up to 400 °C), and high pressure (up to 100 atm) reactors. On the other hand, studies have shown that the ODS process is remarkably successful in the removal of sulfur under mild reaction conditions. This review article presents a comparative analysis of various existing catalytic oxidation techniques: acetic acid/formic acid catalytic oxidation, heteropolyacid (HPA) catalytic oxidation, ionic liquid catalytic oxidation, molecular sieve catalytic oxidation, polyoxometalates catalytic oxidation, titanium catalytic oxidation, and ultrasound-assisted oxidation systems, as well as discusses research gaps, and proposes important recommendations for future challenges.

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“…They reported 72% sulphur removal. In another study, Ahmad et al [15], used acetic acid as a catalyst for sulphur oxidation with H 2 O 2 . They used Fuller's earth for the adsorption of sulfones and achieved 50% sulphur removal.…”

Section: Introductionmentioning

confidence: 99%

Hydrotreatment Followed by Oxidative Desulfurization and Denitrogenation to Attain Low Sulphur and Nitrogen Bitumen Derived Gas Oils

et al. 2018

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To lower the sulphur content below 500 ppm and to increase the quality of bitumen derived heavy oil, a combination of hydrotreating followed by oxidative desulfurization (ODS) and oxidative denitrogenation (ODN) is proposed in this work. NiMo/γ-Al2O3 catalyst was synthesized and used to hydrotreat heavy gas oil (HGO) and light gas oil (LGO) at typical operating conditions of 370–390 °C, 9 MPa, 1–1.5 h−1 space velocity and 600:1 H2 to oil ratio. γ-Alumina and alumina-titania supported Mo, P, Mn and W catalysts were synthesized and characterized using X-ray diffractions, N2 adsorption-desorption using Brunauer–Emmett–Teller (BET) method, X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FT-IR). All catalysts were tested for the oxidation of sulphur and nitrogen aromatic compounds present in LGO and HGO using tert-butyl hydroperoxide (TBHP) as oxidant. The oxidized sulphur and nitrogen compounds were extracted using adsorption on activated carbon and liquid-liquid extraction using methanol. The determination of oxidation states of each metal using XPS confirmed the structure of metal oxides in the catalyst. Thus, the catalytic activity determined in terms of sulphur and nitrogen removal is related to their physico-chemical properties. In agreement with literature, a simplistic mechanism for the oxidative desulfurization is also presented. Mo was found to be more active in comparison to W. Presence of Ti in the support has shown 8–12% increase in ODS and ODN. The MnPMo/γ-Al2O3-TiO2 catalyst showed the best activity for sulphur and nitrogen removal. The role of Mn and P as promoters to molybdenum was also discussed. Further three-stage ODS and ODN was performed to achieve less than 500 ppm in HGO and LGO. The combination of hydrotreatment, ODS and ODN has resulted in removal of 98.8 wt.% sulphur and 94.7 wt.% nitrogen from HGO and removal of 98.5 wt.% sulphur and 97.8 wt.% nitrogen from LGO.

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Oxidative desulfurization of tire pyrolysis oil

Cited by 21 publications

References 21 publications

Clay Adsorption Perspective on Petroleum Refining Industry

Clay Adsorption Perspective on Petroleum Refining Industry

A Comprehensive Review on Catalytic Oxidative Desulfurization of Liquid Fuel Oil

Hydrotreatment Followed by Oxidative Desulfurization and Denitrogenation to Attain Low Sulphur and Nitrogen Bitumen Derived Gas Oils

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