Use of Manganese/Silicon Tailing Waste for Coking Wastewater Treatment: Evaluation of Phenol and Phenylamine Removal Efficiencies

Liu, Hongbo; Gao, Saisai; Zhu, Mengling; Chen, Piao; Ding, Pingxing

doi:10.1007/s11270-015-2303-z

Cited by 4 publications

(5 citation statements)

References 30 publications

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“…The removal rate is less than 25% when the recycling time exceeds 3. In our previous research, the surface of Mn ore tailing turned smoother as the reaction processed, during treatment of low concentration coking wastewater, which resulted in the decrease in catalysis effects (Liu et al 2015). Mn oxides were applied as heterogeneous catalysts and were recovered by filtration, washed with distilled water and ethyl ether repeatedly previously; it showed that the activity of the catalyst reduced insignificantly after 4 times of reuse (Qi et al 2011).…”

Section: Treatment Characteristics and Mechanisms Of The Combined Oxidation Processmentioning

confidence: 98%

“…The main components of the tailing are SiO 2 (silicon dioxide) and MnO 2 (Mn dioxide). Shape and structure of the tailing were identified by SEM (scanning electron microscope) in our previous research (Liu et al 2015). Before used in experiments, the tailings were dried at 105 °C for 24 h and then sieved through a 100-200 mesh sieve.…”

Section: Characteristics Of Mn Ore Tailingsmentioning

confidence: 99%

“…Mn oxides are potential oxidizing agents of natural and xenobiotic organic compounds which make them important participants in oxidation-reduction reactions. In addition, the structure of Mn ore tailing surface is uneven and can absorb organics effectively (Liu et al 2015); the adsorption process follows the pseudo-second-order model (Zheng and Tang 1999). The Mn(III) released by Mn ore tailings will convert into Mn(II) after reacting with phenols under acid condition, but the Mn(II) shown inconspicuous catalysis as it is difficult to determine whether phenols reactant molecules participate in the release of Mn(II) (Stone 1987).…”

Section: Enhancing Effect Of Mn Ore Tailings On Fenton and Ozonationmentioning

confidence: 99%

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High increase in biodegradability of coking wastewater enhanced by Mn ore tailings in Fenton/O3 combined processes

Liu

et al. 2020

Int. J. Environ. Sci. Technol.

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Coking wastewater contains high concentration of organic pollutants and seriously endangers the natural ecological balance and human health. This study proposes a novel pre-treatment method that can significantly improve removal efficiency of organic pollutants in coking wastewater by the concept of "treating waste with waste." Three two-step advanced oxidation processes were proposed by combining Fenton, ozonation with manganese tailings: (i) O 3 /Mn tailings + H 2 O 2 , (ii) O 3 /Mn tailings + Fenton and (iii) Fenton + O 3 /Mn tailings. Results show that (1) Fenton + O 3 /Mn tailings presented the best removal efficiency in the three combined processes. The reaction process was carried out by first performing Fenton reaction on the wastewater for 65 min, and then, the reaction wastewater was subjected to ozone and manganese tailings mixed reaction for 30 min, and the chemical oxygen demand (COD) and chromaticity were reduced by 61.0% and 96.1%, respectively. (2) After pre-treated with Fenton, the biodegradability of the wastewater can be significantly increased. When Fenton + O 3 /Mn ore tailings were used to pre-treat the raw water, the biodegradability (BOD 5 /COD) of the wastewater was increased to 0.54. It is proved that the combined process Fenton + O 3 /Mn ore tailings has better performance than the ordinary single advanced oxidation process. Compared with the existing methods, the addition of manganese tailings containing manganese oxides as catalytic free radicals can significantly improve the treatment activity of advanced oxidation process (AOPS).

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Section: Treatment Characteristics and Mechanisms Of The Combined Oxidation Processmentioning

confidence: 98%

Section: Characteristics Of Mn Ore Tailingsmentioning

confidence: 99%

Section: Enhancing Effect Of Mn Ore Tailings On Fenton and Ozonationmentioning

confidence: 99%

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High increase in biodegradability of coking wastewater enhanced by Mn ore tailings in Fenton/O3 combined processes

Liu

et al. 2020

Int. J. Environ. Sci. Technol.

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“…In particular, wastewater containing pesticides, pharmaceuticals and dye are characterised by high emissions, varying nature, difficult degradation and high toxicity [1][2][3][4][5]. Therefore, effective methods are needed to effectively remove the refractory organic pollutants in wastewater, such as biological method [6,7], physical method [8,9], chemical method [10] and electrochemical method [11][12][13]. Among them, the electrochemical method to remove the refractory organic pollutants in wastewater removal has a broad application prospects.…”

Section: Introductionmentioning

confidence: 99%

Research and Application Progress of Modified Graphite Felt Gas Diffusion Cathode in Organic Wastewater Degradation

Wu¹,

LI²,

Chen³

et al. 2023

Pol. J. Environ. Stud.

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Modified graphite felt is a widely studied cathode material at present. Because of its corrosion resistance, high specific surface area and low cost, it shows great potential in electrochemical oxidation reduction. In this paper, various modification methods of graphite felt, such as introduction of oxygencontaining functional groups, doping of hetero-atoms, deposition of carbon materials, hydrophobicity and so on, are reviewed, in addition, the application effect of modified graphite felt in the removal of organic pollutants in water environment was summarized. Finally, the future research hotspots and challenges were prospected.

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“…Direct discharge of the wastewater without treatment into rivers and lakes would cause serious pollution to environment and bring a serious threat to the survival of mankind (Kehinde and Aziz, 2016 ). However, the treatment of wastewater is extremely difficult, which made it necessary to develop new materials to process the wastewater (Liu et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Enhanced Degradation of Rh 6G by Zero Valent Iron Loaded on Two Typical Clay Minerals With Different Structures Under Microwave Irradiation

Rao

Wang

et al. 2018

Front. Chem.

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Nanoscale zero valent iron has been a widespread concern in various fields due to its large specific surface area and high reactivity. However, nanoscale zero valent iron (nZVI) is very likely to aggregate and be oxidized, which limit its wide application in industry. Most clay minerals have a large adsorption capacity of cations due to their negative charges and high specific surface areas. In the present work, nZVI was loaded onto two typical clay minerals: kaolinite and sepiolite, to inhibit its oxidation and aggregation. The composites were applied to degrade Rhodamine 6G (Rh 6G) under microwave irradiation. The effects of pH value and microwave power on degradation were studied. The results showed that the removal amount of Rh 6G by nZVI/kaolinite was 110 mg/g in 15 min, while it reached 300 mg/g by nZVI/sepiolite. The difference between these two composites was mostly determined by the structures of these two clay minerals.

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Use of Manganese/Silicon Tailing Waste for Coking Wastewater Treatment: Evaluation of Phenol and Phenylamine Removal Efficiencies

Cited by 4 publications

References 30 publications

High increase in biodegradability of coking wastewater enhanced by Mn ore tailings in Fenton/O3 combined processes

High increase in biodegradability of coking wastewater enhanced by Mn ore tailings in Fenton/O3 combined processes

Research and Application Progress of Modified Graphite Felt Gas Diffusion Cathode in Organic Wastewater Degradation

Enhanced Degradation of Rh 6G by Zero Valent Iron Loaded on Two Typical Clay Minerals With Different Structures Under Microwave Irradiation

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