Efficient catalytic wet peroxide oxidation of phenol over Fe-ZSM-5 catalyst in a fixed bed reactor

Yan, Ying; Jiang, Songshan; Zhang, Huiping

doi:10.1016/j.seppur.2014.07.014

Cited by 86 publications

(27 citation statements)

References 42 publications

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“…This approach is in line with the current trend for the intensification of CWPO processes, which is moving the process towards the application of higher temperatures, ranging from 80 • C to 125 • C [9][10][11].…”

Section: Introductionsupporting

confidence: 76%

Hybrid magnetic graphitic nanocomposites towards catalytic wet peroxide oxidation of the liquid effluent from a mechanical biological treatment plant for municipal solid waste

Ribeiro

Rodrigues

Silva

et al. 2017

Applied Catalysis B: Environmental

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a b s t r a c tMagnetite, nickel and cobalt ferrites were prepared and encapsulated within graphitic shells, resulting in three hybrid magnetic graphitic nanocomposites. Screening experiments with a 4-nitrophenol aqueous model system (5 g L −1 ) allowed to select the best performing catalyst, which was object of additional studies with the liquid effluent resulting from a mechanical biological treatment plant for municipal solid waste. Due to its high content in bicarbonates (14350 mg L −1 ) and chlorides (2833 mg L −1 ), controlling the initial pH was a crucial step to maximize the performance of the catalytic wet peroxide oxidation (CWPO) treatment. The catalyst load was 0.5 g L −1 , a very low dosage when compared to the high chemical oxygen demand (COD) of the effluent − 9206 mg L −1 . At the optimum operating pH (i.e., pH = 6), ca. 95% of the aromaticity was converted and ca. 55% of COD and total organic carbon (TOC) of the liquid effluent was removed. The biodegradability of the liquid effluent was enhanced during the treatment by CWPO, as reflected by the 2-fold increase of the five-day biochemical oxygen demand (BOD 5 ) to COD ratio (BOD 5 /COD), namely from 0.21 (indicating non-biodegradability) to 0.42 (suggesting biodegradability of the treated wastewater). In addition, the treated water revealed no toxicity against selected bacteria.Lastly, a magnetic separation system was designed for in-situ catalyst recovery after the CWPO reaction stage. The high catalyst stability was demonstrated through five reaction/separation sequential experiments in the same vessel with consecutive catalyst reuse.

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Section: Introductionsupporting

confidence: 76%

Hybrid magnetic graphitic nanocomposites towards catalytic wet peroxide oxidation of the liquid effluent from a mechanical biological treatment plant for municipal solid waste

Ribeiro

Rodrigues

Silva

et al. 2017

Applied Catalysis B: Environmental

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“…The concentration of phenol in the liquid samples was determined on an Agilent Technologies 1260 Infinity high-performance liquid chromatograph (HPLC) (Yan et al 2014) using a diode array detector (Agilent G4212B). A Kromasil C 18 5-μm column (25 cm long, 4.6 mm diameter) was used as the stationary phase, and methanol and ultrapure water (v/ v=40:60) were used as the mobile phase.…”

Section: Catalytic Oxidation Experimentsmentioning

confidence: 99%

Continuous Treatment of Phenol over an Fe2O3/γ-Al2O3 Catalyst in a Fixed-Bed Reactor

Yao

Gao

et al. 2015

Water Air Soil Pollut

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Fe 2 O 3 /γ-Al 2 O 3 catalysts were prepared using the wet impregnation method and characterized by Xray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and nitrogen adsorption-desorption. The continuous catalytic wet hydrogen peroxide oxidation of an aqueous phenol solution over Fe 2 O 3 /γ-Al 2 O 3 was studied in a fixedbed reactor. The effects of several factors, such as the weight hourly space velocity (WHSV), particle size, reaction temperature, H 2 O 2 concentration, and initial pH, were studied to optimize the operation conditions for phenol mineralization. For a 1 g L −1 phenolic aqueous solution, the phenol was nearly completely removed and chemical oxygen demand (COD) removal was approximately 92 % at steady-state conditions with a WHSV of 2.4×10 −2 g PhOH h −1 g cat −1 at 80°C with 5.1 g L −1 H 2 O 2 . The long-term stability of the Fe 2 O 3 / γ-Al 2 O 3 catalyst was also investigated for the continuous treatment of phenolic water. The removal of phenol and COD exhibited a slowly decreasing trend, which was primarily due to the complexation of active sites with acid organic compounds and the adsorption of intermediate products. The deposition of organic carbon and Fe leached from the catalyst had a small role in the partial deactivation of the catalyst. The Fe leached from the catalyst partially contributed to the phenol removal during a short run. However, this contribution could be neglected after 36 h because the Fe leached from the catalyst decreased to approximately 5 mg L −1 .

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“…Thus, heterogeneous metal-oxide catalysts, such as CuO (Kim and Ihm 2007;Hua, Ma, and Zhang 2013), TiO 2 (Cervantes et al 2013;Pintar, Batista, and Tišler 2008), Graphene oxide , and ZrO 2 (Wei et al 2013) have recently been used. Of these catalysts, CuO is highly active in the decomposition of phenolic compounds, including phenol (Ayusheev et al 2014; A c c e p t e d M a n u s c r i p t 4 Domínguez et al 2014;Lefèvre et al 2011;Wang et al 2014;Yan, Jiang, and Zhang 2014;Yang et al 2014), dye (Ovejero et al 2013;Fu and Kyzas 2014) and chlorophenol (Wei et al 2013a;Zhou et al 2014;Lee, Lin, and Jou 2012). We previously found that 10 wt% CuO/AlR 2 ROR 3 R could catalyze the wet oxidation of aniline making possible high degradation to COR 2 R at temperatures ranging from 160 to 230°C under air pressure ranging from 5 to 10 bars for two hours (Sriprom et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Optimizing chemical oxygen demand removal from synthesized wastewater containing lignin by catalytic wet-air oxidation over CuO/Al₂O₃ catalysts

Sriprom

Neramittagapong

Lin

et al. 2015

Journal of the Air & Waste Management Association

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Catalytic wet-air oxidation (CWAO) has been used as an alternative to overcome problems related to the high temperatures and pressures required by the traditional wet-air oxidation. CWAO has been widely applied to treat various industrial wastewaters. To reduce the overall operational cost, it is necessary to identify the optimal condition required when designing wastewater treatment plant processes. In this work, the authors had successfully demonstrated the application of response surface methodology (RSM) with the Box-Behnken design (BBD) as a means of elucidating the complicated interaction effects between parameters.

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Efficient catalytic wet peroxide oxidation of phenol over Fe-ZSM-5 catalyst in a fixed bed reactor

Cited by 86 publications

References 42 publications

Hybrid magnetic graphitic nanocomposites towards catalytic wet peroxide oxidation of the liquid effluent from a mechanical biological treatment plant for municipal solid waste

Hybrid magnetic graphitic nanocomposites towards catalytic wet peroxide oxidation of the liquid effluent from a mechanical biological treatment plant for municipal solid waste

Continuous Treatment of Phenol over an Fe2O3/γ-Al2O3 Catalyst in a Fixed-Bed Reactor

Optimizing chemical oxygen demand removal from synthesized wastewater containing lignin by catalytic wet-air oxidation over CuO/Al₂O₃ catalysts

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Efficient catalytic wet peroxide oxidation of phenol over Fe-ZSM-5 catalyst in a fixed bed reactor

Cited by 86 publications

References 42 publications

Hybrid magnetic graphitic nanocomposites towards catalytic wet peroxide oxidation of the liquid effluent from a mechanical biological treatment plant for municipal solid waste

Hybrid magnetic graphitic nanocomposites towards catalytic wet peroxide oxidation of the liquid effluent from a mechanical biological treatment plant for municipal solid waste

Continuous Treatment of Phenol over an Fe2O3/γ-Al2O3 Catalyst in a Fixed-Bed Reactor

Optimizing chemical oxygen demand removal from synthesized wastewater containing lignin by catalytic wet-air oxidation over CuO/Al2O3 catalysts

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Optimizing chemical oxygen demand removal from synthesized wastewater containing lignin by catalytic wet-air oxidation over CuO/Al₂O₃ catalysts