Degradation of p-chloroaniline by persulfate activated with zero-valent iron

Hussain, Imtyaz; Zhang, Yongqing; Huang, Shaobin; Du, Xiaozhe

doi:10.1016/j.cej.2012.06.120

Cited by 250 publications

(68 citation statements)

References 33 publications

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“…For instance, the performance was initially retarded at pH 10.0. Similar results were observed in the degradation of p-chloroaniline [27] and acetaminophen [25] in aqueous solutions by using the ZVI-PS system.…”

Section: Effect Of Initial Phsupporting

confidence: 68%

Degradation of chloramphenicol by persulfate activated by Fe 2+ and zerovalent iron

Nie

Yan

et al. 2015

Chemical Engineering Journal

198

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h i g h l i g h t sThe removal efficiencies for CAP in water by PS activated by Fe 2+ and ZVI were studied.CAP was effectively removed by the ZVI-PS system at a broad pH range of 3-10. CAP removal was significantly influenced by operational parameters.The ZVI-PS system shows potential prospects in wastewater or even concentrated wastewater treatment. An oxidation pathway was proposed for CAP removal by the ZVI-PS system. a r t i c l e i n f o , and HA significantly inhibited CAP decomposition. Up to 92.8%, 94.7%, and 75.7% of CAP were removed from the filtrate, permeate, and retentate phases of wastewater, respectively. This result indicated that the ZVI-PS system can significantly remove CAP from wastewater and even concentrated wastewater. The intermediate products during oxidation were identified, and the degradation pathways of CAP were tentatively proposed.

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Section: Effect Of Initial Phsupporting

confidence: 68%

Degradation of chloramphenicol by persulfate activated by Fe 2+ and zerovalent iron

Nie

Yan

et al. 2015

Chemical Engineering Journal

198

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“…The percentage of PAH removal from contaminated sediment ranged between 41.1% and 42.6%. The results of this study were consistent with those of previous authors that a continuous supply of Fe 2+ could be provided to the persulfate system during the oxidation of ZVI by persulfate (Oh et al, 2010;Hussain et al, 2012). The activation of persulfate to generate sulfate radicals is more effective when Fe 2+ is supplied continuously when compared with its one-time dose.…”

Section: +supporting

confidence: 82%

Removal of polycyclic aromatic hydrocarbons from sediments using sodium persulfate activated by temperature and nanoscale zero-valent iron

Chen

Bình

Chen

et al. 2014

Journal of the Air & Waste Management Association

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, and temperature (50-70°C) were performed. The efficiency to remove PAHs was 10.7-39.1% for unactivated persulfate. The treated sample had over 50% of the persulfate still remaining from an initial persulfate dose of 170 g/L, whereas less than 1% of the persulfate remained from an initial persulfate dose of 0.017, 0.17, and 1.7 g/L. Adequate persulfate (170 g/L) must be present because it is the source of the sulfate radicals responsible for the degradation of PAHs. Results indicated that increasing temperature and the addition of nZVI into a persulfate-slurry system could enhance the persulfate oxidation process. The best removal efficiency (90%) was achieved after 24 hr while adding nZVI (0.01 g/L) to persulfate (170 g/L) at temperature of 70°C. The results suggested that nZVI assisted persulfate oxidation without elevating temperature may be a suitable and economic alternative for the ex situ treatment of PAH-contaminated sediments.Implications: Nano zero-valent iron (nZVI) has been successfully applied to transform/degrade contaminants in soils and water. Additionally, nZVI has been used as a catalyst to activate persulfate for the treatment of various contaminants. In this study, with the support of temperature, nZVI-persulfate oxidation system for treatment of PAH-contaminated sediments was improved significantly and the treated sediment could meet remediation goals.

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“…최근에는 전통적으로 오염물질의 환원적 처리에 사용되 어 왔던 0가철을 이용하여 과황산이온을 활성화하는 연구 가 진행되고 있다 (Hussain et al, 2012;Oh et al, 2010).…”

Section: 서 론unclassified

Electrochemical Oxidation of Phenol using Persulfate and Nanosized Zero-valent Iron

Kim¹,

Ahn²,

Kim³

et al. 2017

Journal of Soil and Groundwater Environment

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The efficiency and mechanism of electrochemical phenol oxidation using persulfate (PS) and nanosized zero-valent iron (NZVI) were investigated. The pseudo-first-order rate constant for phenol removal by the electrochemical/PS/NZVI (1 mA*cm/12 mM/6 mM) process was 0.81 h −1, which was higher than those of the electrochemical/PS and PS/NZVI processes. The electrochemical/PS/NZVI system removed 1.5 mM phenol while consuming 6.6 mM PS, giving the highest stoichiometric efficiency (0.23) among the tested systems. The enhanced phenol removal rates and efficiencies observed for the electrochemical/PS/NZVI process were attributed to the interactions involving the three components, in which the electric current stimulated PS activation, NZVI depassivation, phenol oxidation, and PS regeneration by anodic or cathodic reactions. The electrochemical/PS/NZVI process effectively removed phenol oxidation products such as hydroquinone and 1,4-benzoquinone. Since the electric current enhances the reactivities of PS and NZVI, process performance can be optimized by effectively manipulating the current.

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Degradation of p-chloroaniline by persulfate activated with zero-valent iron

Cited by 250 publications

References 33 publications

Degradation of chloramphenicol by persulfate activated by Fe 2+ and zerovalent iron

Degradation of chloramphenicol by persulfate activated by Fe 2+ and zerovalent iron

Removal of polycyclic aromatic hydrocarbons from sediments using sodium persulfate activated by temperature and nanoscale zero-valent iron

Electrochemical Oxidation of Phenol using Persulfate and Nanosized Zero-valent Iron

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