The Effect and its Influence Factors of the Fenton Process on the 
 Old Landfill Leachate

Teng-rui, Long; Al-Harbawi, Anas F.; Zhai, Jun; Bo, Lin

doi:10.3923/jas.2007.724.727

Cited by 25 publications

(11 citation statements)

References 6 publications

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“…These factors were the pH (both in linear and quadratic terms), the H 2 O 2 concentration and the interaction factor between these two variables. The system showed a similar performance compared to the work reported by other authors [ 43 ], in which there was a minor influence of the catalyst concentration but a high dependence on pH, with high reaction rates for lower pH. The Pareto chart is shown in Figure 6 , in which the less influential variables were discarded to recalculate the error bar.…”

Section: Resultssupporting

confidence: 70%

Reusable Fe3O4/SBA15 Nanocomposite as an Efficient Photo-Fenton Catalyst for the Removal of Sulfamethoxazole and Orange II

et al. 2021

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Today, the presence of recalcitrant pollutants in wastewater, such as pharmaceuticals or other organic compounds, is one of the main obstacles to the widespread implementation of water reuse. In this context, the development of innovative processes for their removal becomes necessary to guarantee effluent quality. This work presents the potentiality of magnetic nanoparticles immobilized on SBA-15 mesoporous silica as Fenton and photo-Fenton catalysts under visible light irradiation. The influence of the characteristics of the compounds and nanoparticles on the removal yield was investigated. Once the key aspects of the reaction mechanism were analyzed, to evaluate the feasibility of this process, an azo dye (Orange II) and an antibiotic (sulfamethoxazole) were selected as main target compounds. The concentration of Orange II decreased below the detection limit after two hours of reaction, with mineralization values of 60%. In addition, repeated sequential experiments revealed the recoverability and stability of the nanoparticles in a small-scale reactor. The benchmarking of the obtained results showed a significant improvement of the process using visible light in terms of kinetic performance, comparing the results to the Fenton process conducted at dark. Reusability, yield and easy separation of the catalyst are its main advantages for the industrial application of this process.

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Section: Resultssupporting

confidence: 70%

Reusable Fe3O4/SBA15 Nanocomposite as an Efficient Photo-Fenton Catalyst for the Removal of Sulfamethoxazole and Orange II

et al. 2021

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“…Moreover, the presence of hydrogen peroxide in the effluent has toxic effect on microorganisms and decreases the feasibility of biodegradation rate. Using low concentration of H 2 O 2 makes the Fenton process economically acceptable [ 32 , 34 ]. The excess amount of H 2 O 2 acts as hydroxyl radical’s scavenger (HO 2 °) and reduced the reaction rate [ 35 , 36 ].…”

Section: Resultsmentioning

confidence: 99%

The effects of Fenton process on the removal of petroleum hydrocarbons from oily sludge in Shiraz oil refinery, Iran

Farzadkia

Dehghani

Moafian

2014

J Environ Health Sci Engineer

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BackgroundDue to the high concentrations of total petroleum hydrocarbons (TPH) in oily sludge and their environmental hazards, the concern regarding their effects on health and the environment has increased. The main objective of this research was focused on evaluating the feasibility of using Fenton process in removing TPH in oily sludge from Shiraz oil refinery, Southern Iran.ResultsTo determine optimum conditions, four different parameters were assessed at four different levels using Taguchi method. According to data, the optimum conditions were as follows: the reaction time of 1 hour, H2O2 to sample mass ratio of 15, H2O2 to Fe (II) molar ratio of 10 and pH of 5. The maximum TPH reduction rate was 36.47%. Because of the semi-solid nature of the sample and the hydroxyl radicals mainly generated in the aqueous solution, TPH reduction rate greatly improved by adding water. Ultimately, by adding 40 ml water per gram of the oily sludge under optimized conditions, the reduction rate of 73.07% was achieved.ConclusionsThe results demonstrated that this method can be used as a pre-treatment method for the oily sludge. Moreover, a complementary treatment is necessary to reach the standard limit.

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“…Reaction time has a direct impact on treatability and power consumption during the Fenton process (Deng & Englehardt 2007). In this study, the effect of reaction time on COD, color and turbidity removal during Fenton process was evaluated at 30, 45, 75, 90 and 120 min (Figure 2).…”

Section: Effect Of Reaction Timementioning

confidence: 99%

“…After this period removal efficiency was increased due to the regeneration of Fe 2þ and destruction of produced flocs. The reaction time for Fenton's process in various studies has fluctuated between 30 min and 3 hours (Kang & Hwang 2000;Zhang et al 2005;Tengrui et al 2007).…”

Section: Effect Of Reaction Timementioning

confidence: 99%

“…Chemical reagents are significant operational cost items for many wastewater treatment facilities (Zhang et al 2005). The removal of organic contaminants can be improved by increasing reagents concentration, which will be negligible when the reagent's dosage is increased above a certain threshold level (Deng & Englehardt 2007). Besides, an extra dosage of Fe 2þ can contribute to increase total dissolved solids and electrical conductivity in the effluent that require further treatment before discharge to receiving water (Gogate & Pandit 2004;Hermosilla et al 2009).…”

Section: Effect Of Chemical Reagentsmentioning

confidence: 99%

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Investigation of landfill leachate treatability for reuse in agricultural purposes

Rad

Ziri

Babaei

2017

Water Practice and Technology

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Leachates from landfills are one of the environmental challenges in developing countries, such as Iran that also will face water scarcity in the near future. Landfill leachate management to decrease the negative impact on water resources is indispensable. On the one hand, depending on the age of landfill, high ammonia concentration leachates could be a resource for use in agricultural purposes and on the other, treated leachate can be used as a valuable resource for agronomic irrigation. In order to investigate this hypothesis, landfill leachate was provided from the Sari municipal landfill in the north of Iran (COD = 7,045 mg/l; BOD5/COD = 0.36) and the performance of different combinations of biological, chemical and membrane processes were evaluated according to Iran's Agricultural Water Standard (IAWS). The treatment processes consisted of sequencing batch reactor (SBR), Fenton's process/SBR, and membrane/SBR/Fenton. Results indicated in addition to access IAWS, the treated leachate through Membrane/SBR/Fenton's process could be used as a nitrogen source for agricultural purposes. The removal efficiency of primary parameters, including COD, BOD5, turbidity, and color were 89%, 96%, 99% and 98%, respectively.

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The Effect and its Influence Factors of the Fenton Process on the Old Landfill Leachate

Cited by 25 publications

References 6 publications

Reusable Fe3O4/SBA15 Nanocomposite as an Efficient Photo-Fenton Catalyst for the Removal of Sulfamethoxazole and Orange II

Reusable Fe3O4/SBA15 Nanocomposite as an Efficient Photo-Fenton Catalyst for the Removal of Sulfamethoxazole and Orange II

The effects of Fenton process on the removal of petroleum hydrocarbons from oily sludge in Shiraz oil refinery, Iran

Investigation of landfill leachate treatability for reuse in agricultural purposes

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