Advanced oxidation processes for the treatment of chlorpyrifos, dimethoate and phorate in aqueous solution

Gandhi, Kavita; Lari, Summaiya; Tripathi, Dhananjay; Kanade, Gajanan S.

doi:10.2166/wrd.2015.062

Cited by 23 publications

(8 citation statements)

References 38 publications

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“…It was also reported that the second order rate constant between hydroxyl radicals and CPF (k OP ) and the second order rate constant between carbonate radicals and CPF (k OP , CO3 ) were 4.9 ± 0.1 × 10 9 M −1 s −1 and 8.8 ± 0.4 × 10 6 M −1 s −1 , respectively [23]. Gandhi et al, [25] reported that in the UV/H 2 O 2 process in a solution containing 100 mg/L H 2 O 2 , complete degradation of CPF was achieved after approximately 240 min. The rate constant (k) of CPF degradation was 7.8 × 10 −3 min −1 .…”

Section: Uv/h 2 O 2 Photolysis Processmentioning

confidence: 89%

“…Table 3 reports the degradation of CPF by Photo-Fenton process in aqueous solutions. Gandhi et al, [25] reported that the Photo-Fenton reaction is efficient for CPF degradation (∼50% CPF removal). In their study, a UV lamp (radiation at ranging from 200 to 400 nm) with an average pressure of 400 W was used as a light source.…”

Section: Degradation Of Cpf Pesticide By Aopsmentioning

confidence: 99%

“…Different technologies such as flocculation, filtration, precipitation, adsorption, ozonation, or biological treatment have been offered for pesticides removal from aqueous solutions. These techniques, in addition to high cost and the problem of sludge production, are ineffective against the extent of pesticide contamination [25]. Advanced oxidation processes (AOPs), as innovative water and wastewater treatment technologies, are considered for the removal of low concentrations of toxic and refractory pollutants such as pesticides [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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Advanced oxidation processes for chlorpyrifos removal from aqueous solution: a systematic review

Sheikhi

Dehghanzadeh

Aslani

2021

J Environ Health Sci Engineer

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Chlorpyrifos (CPF), an organophosphate insecticide, due to its high efficiency and low cost is widely used in the agricultural industry. CPF may lead to lung deficiency, central nervous system damage, developmental and autoimmune disorders. In recent decades, the advanced oxidation processes (AOPs) have been considered in water and wastewater treatment due to their high efficiency in decomposition of organic and inorganic compounds, specially hardly biodegradable or non-biodegradable compounds. In the present review study, the most common AOPs (such as Fenton and Photo-Fenton processes, UV/H 2 O 2 photolysis, UV/TiO 2 heterogeneous photo catalysis, electrochemical processes, sonolysis technology, gamma irradiation technology and sulfate-based AOPs) applied for CPF removal from aqueous matrices has been investigated. It can be concluded that the use of AOPs are effective for CPF removal from aqueous media. In addition, Fenton and photocatalytic processes appear to be the most common techniques for CPF degradation.

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Section: Uv/h 2 O 2 Photolysis Processmentioning

confidence: 89%

Section: Degradation Of Cpf Pesticide By Aopsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Advanced oxidation processes for chlorpyrifos removal from aqueous solution: a systematic review

Sheikhi

Dehghanzadeh

Aslani

2021

J Environ Health Sci Engineer

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“…The low effectiveness of conventional water treatments in the destruction of recalcitrant contaminants and the formation of hazardous byproducts has encouraged the search for treatments with a higher oxidative capacity avoiding the formation of harmful byproducts. In this sense, it has been proposed the use of the so-called advanced oxidation processes (AOP) for the elimination of recalcitrant compounds and disinfection of effluents [3,14,15]. Nevertheless, there are differences between bacterial inactivation and decolorization of recalcitrant organic compounds by AOP [16].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Fenton Technology for Recalcitrant Compounds and Bacteria Inactivation

2020

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In this work, the Fenton technology was applied to decolorize methylene blue (MB) and to inactivate Escherichia coli K12, used as recalcitrant compound and bacteria models respectively, in order to provide an approach into single and combinative effects of the main process variables influencing the Fenton technology. First, Box–Behnken design (BBD) was applied to evaluate and optimize the individual and interactive effects of three process parameters, namely Fe2+ concentration (6.0 × 10−4, 8.0 × 10−4 and 1.0 × 10−3 mol/L), molar ratio between H2O2 and Fe2+ (1:1, 2:1 and 3:1) and pH (3.0, 4.0 and 5.0) for Fenton technology. The responses studied in these models were the degree of MB decolorization (D%MB), rate constant of MB decolorization (kappMB) and E. coli K12 inactivation in uLog units (IuLogEC). According to the results of analysis of variances all of the proposed models were adequate with a high regression coefficient (R2 from 0.9911 to 0.9994). BBD results suggest that [H2O2]/[Fe2+] values had a significant effect only on D%MB response, [Fe2+] had a significant effect on all the responses, whereas pH had a significant effect on D%MB and IuLogEC. The optimum conditions obtained from response surface methodology for D%MB ([H2O2]/[Fe2+] = 2.9, [Fe2+] = 1.0 × 10−3 mol/L and pH = 3.2), kappMB ([H2O2]/[Fe2+] = 1.7, [Fe2+] = 1.0 × 10−3 mol/L and PH = 3.7) and IuLogEC ([H2O2]/[Fe2+] = 2.9, [Fe2+] = 7.6 × 10−4 mol/L and pH= 3.2) were in good agreement with the values predicted by the model.

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“…Recent research has confirmed advanced oxidation processes (AOPs) is an effective way to degrade organic material in liquids through the formation of strong oxidants like hydroxyl radical (•OH) and sulfate radical ( ) [14]. Among them, •OH is the SO •-4 main oxidant in traditional AOPs, which could oxidize a wide range of organic contaminants non-selectively, and the has attracted much interest especially SO •-4 for in situ chemical oxidation [15][16][17]. Regarding •OH, E. Nikfar et al Employed ultrasound along with hydrogen peroxide for the removal of BPA from aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound-enhanced zero-valent copper activation of persulfate for the degradation of bisphenol AF

Wang

Cao

Han

et al. 2019

Chemical Engineering Journal

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Ultrasound (US) was introduced into a persulfate (PS) / zero-valent copper (ZVC) system for the degradation of bisphenol AF (BPAF). In this system, ZVC worked as a catalyst to activate PS. Compared with the PS/ZVC process, the degradation rate of BPAF in the PS/ZVC/US system raised significantly from 59.8% to 97.0% due to a synergistic interaction between sonolysis and a heterogeneous reaction. When ultrasound was 120 W at 20 kHz and initial BPAF concentration was 20 mol/L, the BPAF could be completely removed after a 60-min reaction with 0.5 g/L ZVC, 1 mM PS. According to kinetics research, the decomposition of BPAF in a PS/ZVC/US system could be separated into two stages with a demarcation point after about 20 min of reaction via pseudo-first-order rate constants (). A Quantitative analytical k obs modeling for the study of main radicals was established, and the result indicated was the predominant radical in acidic conditions and both •OH and SO •-4 SO •-4 were the predominant radicals in relative basic conditions. Moreover, the effects of initial persulfate dosage, initial BPAF concentration, and coexisting inorganic anions on BPAF degradation were evaluated. A high-accuracy mass spectrometer was used to study the oxidation process and potential activities were deduced. Finally, the possible reaction mechanisms in the PS/ZVC/US system is proposed that the surface heterogeneous catalysis was the key step to activate PS. This work will promote the understanding of the utilization of ZVC in advanced oxidation and also the key role of in activating PS. Cu +

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Advanced oxidation processes for the treatment of chlorpyrifos, dimethoate and phorate in aqueous solution

Cited by 23 publications

References 38 publications

Advanced oxidation processes for chlorpyrifos removal from aqueous solution: a systematic review

Advanced oxidation processes for chlorpyrifos removal from aqueous solution: a systematic review

Optimization of Fenton Technology for Recalcitrant Compounds and Bacteria Inactivation

Ultrasound-enhanced zero-valent copper activation of persulfate for the degradation of bisphenol AF

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