Treatment of stabilized landfill leachate by Fenton-like process using Fe3O4 particles decorated Zr-pillared bentonite

Ma, Cui; He, Zhengguang; Jia, Shengyong; Zhang, Xingjun; Hou, Sen

doi:10.1016/j.ecoenv.2018.06.031

Cited by 44 publications

(21 citation statements)

References 38 publications

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“…The reactive area of the catalyst decreases due to agglomeration, resulting in less Fe being added to the oxidation reaction. Similar comments are found in the literature [70,71].…”

Section: Adequate Precision Measures the Signal-to-noise Ratiosupporting

confidence: 90%

Reaktif turuncu 16 boyasının, katalizör olarak manyetik nano boyutlu kil kullanılarak heterojen Fenton prosesi ile parçalanması: Bir Merkezi kompozit optimizasyon çalışması

Öztürk

2022

Hacettepe Journal of Biology and Chemistry

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B u çalışmada Fe 3 O 4 /montmorillonit, sulu çözeltilerden Reaktif Turuncu 16 'nın kimyasal oksijen ihtiyacı'na dayalı uzaklaştırılması için heterojen bir fenton katalizörü olarak sentezlenmiştir. H 2 O 2 konsantrasyonu, katalizör dozu, pH ve reaksiyon süresi gibi sistem parametreleri, Merkezi kompozit tasarım temelinde sayısal olarak optimize edildi. Katalizör, X-ışını kırınımı, Fourier dönüşümlü kızılötesi spektroskopisi, Taramalı elektron mikroskobu, Enerji dağılımlı X-ışını spektroskopisi, Transmisyon elektron mikroskobu, Dinamik ışık saçılımı, ζ potansiyeli ve Brunauer-Emmett-Teller ile karakterize edildi. Adsorpsiyon prosesi, Reaktif Turuncu 16'nın uzaklaştırılmasında katkıda bulundu, ancak heterojen Fenton prosesi büyük bir paya sahipti ve adsorpsiyon prosesinden daha hızlı gerçekleşti. Optimum koşullar katalizör dozajı: 1.83 (g/L), H 2 O 2 konsantrasyonu: 77.98 (mM), pH: 3 ve reaksiyon süresi: 60 dakika olarak belirlendi. Bu koşullar altında kimyasal oksijen ihtiyacı giderim verimi mo-delden% 84.82 olarak tahmin edidi ve deneysel olarak % 85.90 bulundu. Reaktif Turuncu 16' nın sulu ortamlardan başarılı bir şekilde uzaklaştırılması Fe 3 O 4 / montmorillonit kullanılarak heterojen Fenton prosesi ile mümkündür.

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“…The reactive area of the catalyst decreases due to agglomeration, resulting in less Fe being added to the oxidation reaction. Similar comments are found in the literature [70,71].…”

Section: Adequate Precision Measures the Signal-to-noise Ratiosupporting

confidence: 90%

Reaktif turuncu 16 boyasının, katalizör olarak manyetik nano boyutlu kil kullanılarak heterojen Fenton prosesi ile parçalanması: Bir Merkezi kompozit optimizasyon çalışması

Öztürk

2022

Hacettepe Journal of Biology and Chemistry

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“…This may be caused by the accumulation of nondegradable humus. After catalytic reaction with Fe-Mn-Cu@ATP, the peak A shifted and the fluorescence intensity was significantly reduced, indicating that some FA and HA were effectively degraded into substances without fluorescence characteristics, which was consistent with the analysis results of GC-MS, indicating that FA and HA were effectively degraded into small molecules or removed, thereby improving the biodegradability of the effluent [40].…”

Section: D-eem the Fluorescence Spectrum Analysissupporting

confidence: 80%

“…The COD removal rate increased from 33.09% at mol/L to 64.98% at 0.5 mol/L. It can be seen that with the increase of oxidant concentratio the COD removal rate will directly improve [40]. In the experiment, within a certain ran as the dosage of H2O2 increases, it will promote the production of more •OH.…”

Section: Effect Of the Peroxide Concentrationmentioning

confidence: 85%

Heterogeneous Photo-Fenton Catalytic Degradation of Practical Pharmaceutical Wastewater by Modified Attapulgite Supported Multi-Metal Oxides

Wang

et al. 2021

Water

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Chemical synthetic pharmaceutical wastewater has characteristics of high concentration, high toxicity and poor biodegradability, so it is difficult to directly biodegrade. We used acid modified attapulgite (ATP) supported Fe-Mn-Cu polymetallic oxide as catalyst for multi-phase Fenton-like ultraviolet photocatalytic oxidation (photo-Fenton) treatment with actual chemical synthetic pharmaceutical wastewater as the treatment object. The results showed that at the initial pH of 2.0, light distance of 20 cm, and catalyst dosage and hydrogen peroxide concentration of 10.0 g/L and 0.5 mol/L respectively, the COD removal rate of wastewater reached 65% and BOD5/COD increased to 0.387 when the reaction lasted for 180 min. The results of gas chromatography-mass spectrometry (GC-MS) indicated that Fenton-like reaction with Fe-Mn-Cu@ATP had good catalytic potential and significant synergistic effect, and could remove almost all heterocycle compounds well. 3D-EEM (3D electron microscope) fluorescence spectra showed that the fluorescence intensity decreased significantly during catalytic degradation, and the UV humus-like and fulvic acid were effectively removed. The degradation efficiency of the nanocomposite only decreased by 5.8% after repeated use for 6 cycles. It seems appropriate to use this process as a pre-treatment for actual pharmaceutical wastewater to facilitate further biological treatment.

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“…In order to explore the changes in dissolved organic matter in the treatment of LLNC by EC/PMS/NrGO-MnFe 2 O 4 catalytic system, the 3D-EEM fluorescence spectra of the original LLNC and the effluent are shown in Figure 7. The synthesized spectrum can be subdivided into five major regions, representing aromatic protein I (I), aromatic protein II (II), fulvic acid-like samples (III), humic acid-like samples (IV) and soluble microbial byproduct-like samples (V) [54]. It can be seen from Figure 7a that LLNC identified an obvious peak (peak 1) in the 3D-EEM fluorescence spectrum before treatment, and the maximum fluorescence intensity of the peak is located at the wavelength of 400/490 nm of Ex/Em, indicating that the peak belongs to humic acid-like substances.…”

Section: The 3d-eem Fluorescence Spectroscopic and Gc-ms Analysis On mentioning

confidence: 99%

Electrochemical/Peroxymonosulfate/NrGO-MnFe2O4 for Advanced Treatment of Landfill Leachate Nanofiltration Concentrate

Wang

et al. 2021

Water

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A simple one-pot method was used to successfully embed manganese ferrite (MnFe2O4) nanoparticles on the nitrogen-doped reduced graphene oxide matrix (NrGO), which was used to activate peroxymonosulfate to treat the landfill leachate nanofiltration concentration (LLNC) with electrochemical enhancement. NrGO-MnFe2O4 and rGO-MnFe2O4 were characterized by various means. This indicates that nitrogen-doped could induce more graphene oxide (GO) spall and reduction to produce more active centers, and was favorable for uniformly loading MnFe2O4 particles. The comparison between electrochemical/peroxymonosulfate/NrGO-MnFe2O4 (EC/PMS/NrGO-MnFe2O4) system and different catalytic systems shows that electrochemical reaction, NrGO and MnFe2O4 can produce synergies, and the chemical oxygen demand (COD) removal rate of LLNC can reach 72.89% under the optimal conditions. The three-dimensional (3D-EEM) fluorescence spectrum shows that the system has a strong treatment effect on the macromolecules with intense fluorescence emission in LLNC, such as humic acid, and degrades into substances with weak or no fluorescence characteristics. Gas chromatography-mass spectrometry (GC-MS) indicates that the complex structure of refractory organic compounds can be simplified, while the simple small molecular organic compounds can be directly mineralized. The mechanism of catalytic degradation of the system was preliminarily discussed by the free radical quenching experiment. Therefore, the EC/PMS/NrGO-MnFe2O4 system has significant application potential in the treatment of refractory wastewater.

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Treatment of stabilized landfill leachate by Fenton-like process using Fe3O4 particles decorated Zr-pillared bentonite

Cited by 44 publications

References 38 publications

Reaktif turuncu 16 boyasının, katalizör olarak manyetik nano boyutlu kil kullanılarak heterojen Fenton prosesi ile parçalanması: Bir Merkezi kompozit optimizasyon çalışması

Reaktif turuncu 16 boyasının, katalizör olarak manyetik nano boyutlu kil kullanılarak heterojen Fenton prosesi ile parçalanması: Bir Merkezi kompozit optimizasyon çalışması

Heterogeneous Photo-Fenton Catalytic Degradation of Practical Pharmaceutical Wastewater by Modified Attapulgite Supported Multi-Metal Oxides

Electrochemical/Peroxymonosulfate/NrGO-MnFe2O4 for Advanced Treatment of Landfill Leachate Nanofiltration Concentrate

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