Degradation of aniline with zero-valent iron as an activator of persulfate in aqueous solution

Hussain, Imtyaz; Zhang, Yongqing; Huang, Shaobin

doi:10.1039/c3ra43364a

Cited by 135 publications

(44 citation statements)

References 56 publications

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“…The total organic carbon (TOC) of the solutions was measured after immediate quenching with excessive NaNO 2 using a Shimazu TOC-VCPH analyzer. Intermediates formed during aniline decomposition were analyzed by GC/MS [36]. The most important is to keep the reaction process as neutral, 0.5 M phosphate buffer were used as the solvent.…”

Section: Evaluation Of Catalytic Activitymentioning

confidence: 99%

“…0.5 mL sample was withdrawn by a syringe at fixed time intervals, filtered by a 0.22 mm Millipore film, then immediately injected into the sample bottle with equal volume of methanol as a quenching reagent. The mixed sample was analyzed by a high performance liquid chromatograph (HPLC, Agilent Technologies Inc) with a C-18 column and a UV detector set at 230 nm [35,36]. The intermediates were analyzed by gas chromatography tandem mass spectrometer (GC-MS).…”

Section: Evaluation Of Catalytic Activitymentioning

confidence: 99%

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Direct fabrication of lamellar self-supporting Co3O4/N/C peroxymonosulfate activation catalysts for effective aniline degradation

Huang

Zhang

et al. 2017

Chemical Engineering Journal

107

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Section: Evaluation Of Catalytic Activitymentioning

confidence: 99%

Section: Evaluation Of Catalytic Activitymentioning

confidence: 99%

Direct fabrication of lamellar self-supporting Co3O4/N/C peroxymonosulfate activation catalysts for effective aniline degradation

Huang

Zhang

et al. 2017

Chemical Engineering Journal

107

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“…The findings of these studies suggested that the simultaneous existence of both factors (temperature and zero-valent iron) in the persulfate-water system can significantly enhance the oxidation of pollutants (Adewuyi and Sakyi, 2013;Hussain et al, 2014). Especially, nano zero-valent iron (nZVI) with the surface area reactivity were~100 times higher than that of micro ZVI powder and nZVI exhibited the highest level of ability to activate persulfate to degrade pollutants (Chang et al, 2005;Morgada et al, 2009;Li et al, 2014).…”

Section: Introductionmentioning

confidence: 89%

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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“…Persulfate (PS) is a very strong and nonselective oxidant having redox potential of 2.01 V (Hussain et al 2014). PS has many advantages over permanganate and Fenton reagent due to its relatively low cost, stable in subsurface, and high aqueous solubility (Yen et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Effects of pH and Anions on the Generation of Reactive Oxygen Species (ROS) in nZVI-rGo-Activated Persulfate System

Ahmad

et al. 2015

Water Air Soil Pollut

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In this study, nanosized zero-valent iron-reduced graphene oxide (nZVI-rGO)-activated persulfate (PS) was used to investigate the generation of reactive oxygen species (ROS) for the degradation of trichloroethylene (TCE) in the aqueous solution. More than 98 % of TCE was degraded within 2 min under experimental conditions. The generation of ·OH increased when the pH was shifted toward the basic region while ·SO 4 − radicals' intensity increased in the acidic pH. Different scenarios have been observed in ·O 2 − generation in the neutral and strong basic pH and decreased in acidic or slightly basic pH. In addition, the intensity of ·OH was increased with the addition of HCO 3 − (10 mM) and NO 3 − (100 mM) but decreased in the presence of Cl − (10 and 100 mM), HCO 3 − (100 mM), and NO 3 − (10 mM). The degradation of anisole, probe for both ·OH and ·SO 4 − , was slightly enhanced by 10 mM NO 3 − anions but decreased in 100 mM salt solution. ·O 2 − intensity was increased while HCO 3 − (10 and 100 mM) and NO 3 − (100 mM) anions were used.nZVI-rGO-activated PS process could remove TCE in aqueous effectively, and the ROS generation and intensity were influenced by solution pH values and anions.

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Degradation of aniline with zero-valent iron as an activator of persulfate in aqueous solution

Cited by 135 publications

References 56 publications

Direct fabrication of lamellar self-supporting Co3O4/N/C peroxymonosulfate activation catalysts for effective aniline degradation

Direct fabrication of lamellar self-supporting Co3O4/N/C peroxymonosulfate activation catalysts for effective aniline degradation

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

Effects of pH and Anions on the Generation of Reactive Oxygen Species (ROS) in nZVI-rGo-Activated Persulfate System

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