Treatment of coking wastewater by an advanced Fenton oxidation process using iron powder and hydrogen peroxide

Chu, Libing; Wang, Jianlong; Dong, Jing; Liu, Haiyang; Sun, Xu-Lin

doi:10.1016/j.chemosphere.2011.09.007

Cited by 186 publications

(64 citation statements)

References 23 publications

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“…Limitation on the study of PAHs in coking wastewater can be ascribed to many factors, including: (1) distribution of coking plants mainly in developing countries, which limits the study of representative wastewater samples; (b) economic and social conditions that do not allow developing countries to fully address pollutants from coking wastewater; and (c) technically difficult collection, extraction, and separation of target organic compounds from the complex matrix (Busetti et al 2006;Poster et al 2006). As economic development has proceeded and public health awareness has increased, recent research has begun to focus on coking wastewater (Zhu et al 2009;Bai et al 2011;Chu et al 2012). In recent years, many efforts have been made to develop effective analytical techniques for PAHs in complex matrices (Chen et al 2005;Busetti et al 2006;Guo et al 2007), which make the identification and quantitative analyses possible for PAHs in coking wastewater.…”

Section: Responsible Editor: Leif Kronbergmentioning

confidence: 99%

Identification and removal of polycyclic aromatic hydrocarbons in wastewater treatment processes from coke production plants

Zhang

Wei

Yan

et al. 2013

Environ Sci Pollut Res

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Identification and removal of polycyclic aromatic hydrocarbons (PAHs) were investigated at two coke plants located in Shaoguan, Guangdong Province of China. Samples of raw coking wastewaters and wastewaters from subunits of a coke production plant were analyzed using gas chromatography-mass spectrometry (GC/MS) to provide a detailed chemical characterization of PAHs. The identification and characterization of PAH isomers was based on a positive match of mass spectral data of sample peaks with those for PAH isomers in mass spectra databases with electron impact ionization mass spectra and retention times of internal reference compounds. In total, 270 PAH compounds including numerous nitrogen, oxygen, and sulfur heteroatomic derivatives were positively identified for the first time. Quantitative analysis of target PAHs revealed that total PAH concentrations in coking wastewaters were in the range of 98.5±8.9 to 216±20.2 μg/L, with 3-4-ring PAHs as dominant compounds. Calculation of daily PAH output from four plant subunits indicated that PAHs in the coking wastewater came mainly from ammonia stripping wastewater.Coking wastewater treatment processes played an important role in removing PAHs in coking wastewater, successfully removing 92 % of the target compounds. However, 69 weakly polar compounds, including PAH isomers, were still discharged in the final effluent, producing 8.8±2.7 to 31.9±6.8 g/day of PAHs with potential toxicity to environmental waters. The study of coking wastewater herein proposed can be used to better predict improvement of coke production facilities and treatment conditions according to the identification and removal of PAHs in the coke plant as well as to assess risks associated with continuous discharge of these contaminants to receiving waters.

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Section: Responsible Editor: Leif Kronbergmentioning

confidence: 99%

Identification and removal of polycyclic aromatic hydrocarbons in wastewater treatment processes from coke production plants

Zhang

Wei

Yan

et al. 2013

Environ Sci Pollut Res

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“…Over 200 mg/L iron ions leached from iron powder through surface corrosion (Eqs. (7)- (9) (Chu et al, 2012;Joo et al, 2005;Xu and Wang, 2011)) during the oxidation of 4-chlorophenol (4-CP) at initial pH 5. Iron leaching increased as pH decreased, accelerating both H 2 O 2 activation and 4-CP degradation.…”

Section: Homogeneous Fenton Mechanism Induced By Surfaceleached Ironmentioning

confidence: 99%

Interfacial mechanisms of heterogeneous Fenton reactions catalyzed by iron-based materials: A review

Yang

Men

et al. 2016

Journal of Environmental Sciences

469

153

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The heterogeneous Fenton reaction can generate highly reactive hydroxyl radicals (UOH) from reactions between recyclable solid catalysts and H 2 O 2 at acidic or even circumneutral pH. Hence, it can effectively oxidize refractory organics in water or soils and has become a promising environmentally friendly treatment technology. Due to the complex reaction system, the mechanism behind heterogeneous Fenton reactions remains unresolved but fascinating, and is crucial for understanding Fenton chemistry and the development and

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“…The advanced Fenton oxidation process is an effective pretreatment method for the removal of organic pollutants from coking wastewater. This process increases biodegradation, and may be combined with a classical biological process to achieve effluent of high quality [47].…”

Section: Coking Plantmentioning

confidence: 99%

Treatment Technologies for Organic Wastewater

Zheng¹,

Zhao²,

Zhou³

et al. 2013

Water Treatment

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Treatment of coking wastewater by an advanced Fenton oxidation process using iron powder and hydrogen peroxide

Cited by 186 publications

References 23 publications

Identification and removal of polycyclic aromatic hydrocarbons in wastewater treatment processes from coke production plants

Identification and removal of polycyclic aromatic hydrocarbons in wastewater treatment processes from coke production plants

Interfacial mechanisms of heterogeneous Fenton reactions catalyzed by iron-based materials: A review

Treatment Technologies for Organic Wastewater

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