High efficient treatment of the petrochemical phenolic effluent using spent catalyst: Experimental and optimization

Vosoughi, Mahsa; Fatehifar, Esmaeil; Derafshi, Siavash; Rostamizadeh, Mohammad

doi:10.1016/j.jece.2017.04.003

Cited by 14 publications

(10 citation statements)

References 50 publications

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“…Various other semiconductor catalysts such as Bi 4 O 5 Br x I 2-x (Meng et al 2018), PdO/Al 2 O 3 -Nd 2 O 3 (Balgude et al 2019), PF/TiO 2 (Li et al 2018), Sn 3 O 4 microballs, Fe 2 O 3 (Vosoughi et al 2017), La-doped Zn (O, S) nanoparticles (Abdullah et al 2019), B-GO-TiO 2 (Shokri et al 2016), Fe 2 O 3 /RGO nanocomposite (Mohan et al 2019), MoS 2 /rGO, CdS-MoS 2 /rGO composite (Peng et al 2016) have also been shown to be effective in the degradation of various petrochemicals. For the PCO process to be effective, several variables such as light intensity, amount of catalyst, temperature, pH, UV irradiation time, and initial pollutants concentration must be optimized (Shahrezaei et al 2012).…”

Section: Photocatalytic Oxidation (Pco)mentioning

confidence: 99%

Application of Advanced Oxidation Processes (AOPs) for the Treatment of Petrochemical Industry Wastewater

Verma

Kumar

Srivastava

et al. 2021

Environmental Science and Engineering

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Petrochemicals are derived directly or indirectly from petroleum. During the production of petrochemicals, various refractory and toxic pollutants are generated, which are harmful to the aquatic system. These pollutants are genotoxic, carcinogenic, and teratogenic. Although these pollutants are harmful, only a limited number of studies have been performed on their removal or degradation. Conventional wastewater treatment techniques are not efficient in removing these pollutants from wastewater. Therefore, the scientific community is now putting up efforts to make the Advanced Oxidation Processes (AOPs) more efficient. The main aim is to produce very reactive species (especially hydroxyl radicals, HO˙) in water by the AOPs. This leads to the degradation or transformation of the contaminants or pollutants, resulting in complete mineralization. The most studied AOPs for the degradation of petrochemical wastewater pollutants are photocatalytic oxidation (PCO), ozonation, catalytic oxidation, catalytic ozonation, and electrochemical advanced oxidation processes. This chapter specifically discusses the various AOPs used to remove specific pollutants and chemical oxygen demand (COD) from petrochemical wastewater treatment to meet discharge standards.

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Section: Photocatalytic Oxidation (Pco)mentioning

confidence: 99%

Application of Advanced Oxidation Processes (AOPs) for the Treatment of Petrochemical Industry Wastewater

Verma

Kumar

Srivastava

et al. 2021

Environmental Science and Engineering

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“…AOPs are based on the production of hydroxyl radicals (˙OH) that is the strongest after fluorine oxidant. These radicals are highly reactive, unstable, and short lifetime (less than nanoseconds) 3,4 . The electro‐Fenton (EF) process is the combination of Fenton and electrochemical processes to achieve the high efficiency 5,6 .…”

Section: Introductionmentioning

confidence: 99%

“…These radicals are highly reactive, unstable, and short lifetime (less than nanoseconds). 3,4 The electro-Fenton (EF) process is the combination of Fenton and electrochemical processes to achieve the high efficiency. 5,6 In this process, the reduction of oxygen forms H 2 O 2 , producing˙OH in the presence of Fe 2+ .…”

Section: Introductionmentioning

confidence: 99%

Iron modified zeolite carrier for efficiently pharmaceutical pollutant degradation in heterogeneous electro‐Fenton: Influence factors and kinetic

Niaei

Rostamizadeh

2020

Env Prog and Sustain Energy

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In this study, the high silica ZSM‐5 carrier was modified with the iron species and applied as a heterogeneous electro‐Fenton (EF) catalyst for pharmaceutical pollutant degradation. The carrier was prepared by the hydrothermal method and followed by impregnation. The physicochemical properties were evaluated by field emission scanning electron microscopes (FE‐SEM), FT‐IR, X‐Ray diffraction (XRD), and N2 adsorption–desorption techniques. The impregnated carrier had high crystallinity, high specific surface area, and uniform dispersion of iron species. The effect of different operating conditions was studied on the phenazopyridine (PHP) degradation efficiency. The optimal efficiency of PHP degradation (ca. 92.5%) was obtained at pH of 3.0, the current density of 100 mA, catalyst loading of 0.2 g L−1, and T = 25°C. The data of kinetic showed that the degradation of PHP followed Pseudo‐First‐Order kinetic, including the high accuracy (R2 > 0.95). The developed catalyst had the high stability and reusability for the PHP degradation in the EF process, while the degradation efficiency dropped only 0.5% for the regenerated catalyst.

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“…Oksidanlarla birlikte sıvı veya katı katalizörlerin kullanılmasına katalitik oksidasyon prosesleri denilmektedir. Katalitik oksidasyon prosesleri eskiden beri ilaçlar [7], pestisitler [8], fenoller [9], aromatik hidrokarbonlar [10] ve organik asitler [11,12] gibi ozona karşı dirençli bileşiklerin degredasyonunda kullanılmaktadır. Aktif karbonlar [13], α-FeOOH [14] ve TiO 2 [15,16] gibi etkin olduğu bilinen birçok katalizör hem katalitik etkileri hem de adsorpsiyon kapasiteleri nedeniyle oksidasyon proseslerinde kullanılmaktadır.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Removal of Natural Organic Matters from Aquatic Environment by Catalytic Ozonation Processes with Silver Nanoparticles: Determination of Ozonation Products

Alver

Tağaç

Kılıç

2020

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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 Humic acid solutions are not fully mineralized after catalytic ozonation.  Intermediate products formed during catalytic ozonation are identified.  Depending on the aromatics of organic matter, the treatment efficiency varies. Oxidation by-products Ethylbenzene 4-Heptyloxyphenol P-Propyltoluene Hydroxydione Propanoic acid (2E)-3-Methyl-2-penten-1-ol Carboxylic acid Benzaldehyde Aminocaproic acid 2 , 4-d i h ydroxy-6-(2'-oxoheptyl)benzaldehyde Hexenoic acid 2-O c t yltetrahydrofuran 2-Hydroxyheptanoic acid O x o l a n e-2-peroxol Isopropyl Acetate Oxirane Acetonylacetone Spiro[bicyclo[2.2.1]heptane-2,1'-cyclopropane]-5-ene Methyl cyclopropane carboxylate Table A. Oxidation by-products in humic acid solutions oxidized with the AgNP@MMT/O3 process Purpose: In catalytic ozonation processes, the ultimate aim is to oxidize the pollutant to the end product, but as a result of the chain oxidation reactions, some intermediates cannot be oxidized to the end product, and after disinfection of the effluent waters, some toxic/carcinogenic/mutagenic intermediates may occur. This study focuses on the oxidation by-products that occur during the removal of natural organic matter from the aquatic environment through catalytic ozonation processes. Theory and Methods: In this study, the treatment of humic acid (HA) solutions that represent natural organic materials in surface waters and prepared synthetically, by montmorillonite enriched with silver-based nanoparticles (AgNP@MMT) catalyzed ozonation processes was investigated. In the treatability experiments, the effects of different doses of catalysts on humic acid degradation were investigated. Also, catalytic ozonation performance was investigated in the presence of tert-butyl alcohol (TBA) known as an organic radical scavenger. After the catalytic ozonation experiments, excess chlorine was added to sub-samples that was taken the reactor effluent and allowed to incubate. Thus, the formation of oxidation by-products has been achieved. Trihalomethane (THM) and Haloacetic Acid (HAA) species formed by the disinfection process with chlorine were analyzed quantitatively and other oxidation intermediates were determined qualitatively. Results: Degradation of HA and changes in aliphatic-aromatic structure were observed in treatment studies where catalyst doses were changed. The variability in the removal of DOC depending on the increase in the amount of catalyst was between 67.80-76.61%. Besides, the presence of •OH radicals in heterogeneous catalytic ozonation has been indicated using TBA, known as organic radical scavengers. The formation potential of THM and HAA was decreased by a maximum of 79.50% and 80.40% depending on the catalyst dose and time increase. UV220-272 results showed that high molecular weight HAs catalytically degraded to low molecular weight organic compounds. Small molecular weight intermediates resulting from the degradation of HA by catalytic ozonation react with •OH in the medium and form different intermediate product groups. When the structure of the interm...

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High efficient treatment of the petrochemical phenolic effluent using spent catalyst: Experimental and optimization

Cited by 14 publications

References 50 publications

Application of Advanced Oxidation Processes (AOPs) for the Treatment of Petrochemical Industry Wastewater

Application of Advanced Oxidation Processes (AOPs) for the Treatment of Petrochemical Industry Wastewater

Iron modified zeolite carrier for efficiently pharmaceutical pollutant degradation in heterogeneous electro‐Fenton: Influence factors and kinetic

Removal of Natural Organic Matters from Aquatic Environment by Catalytic Ozonation Processes with Silver Nanoparticles: Determination of Ozonation Products

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