4-Chlorophenol degradation using ultrasound/peroxymonosulfate/nanoscale zero valent iron: Reusability, identification of degradation intermediates and potential application for real wastewater

Barzegar, Gelavizh; Jorfi, Sahand; Zarezade, Vahid; Khatebasreh, Masoumeh; Mehdipour, Fayyaz; Ghanbari, Farshid

doi:10.1016/j.chemosphere.2018.02.143

Cited by 181 publications

(27 citation statements)

References 48 publications

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“…Orange acid 7 remained constant due to limitation of active sites of the catalyst (Liu et al, 2017). In addition, similar results were observed by Barzegar et al (2018) for the degradation of 4-Chlorophenol. The effect of the initial concentration of BPA on the efficacy of the sono-photo-catalytic process is shown in Figures S4d and S5d and was recognized as the most important factor in the removal of BPA in this study.…”

Section: Research Articlesupporting

confidence: 78%

Sono‐photo‐assisted heterogeneous activation of peroxymonosulfate by Fe/CMK‐3 catalyst for the degradation of bisphenol A, optimization with response surface methodology

Rahimzadeh

Rahmani

Samadi

et al. 2019

Water Environment Research

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The present study examined the removal of bisphenol A (BPA) and total organic carbon (TOC) from aqueous solutions by the Fe/CMK-3 as peroxymonosulfate activator used in the sono-photo-catalytic process. The synthesis of Fe/CMK-3 was carried out using the co-precipitation method, and it was characterized by FTIR, XRD, BET, EDX, and TEM. The results showed that the iron nanoparticles were uniformly embedded in the CMK-3 pores. The effect of factors affecting on the removal of BPA and TOC was evaluated by response surface methodology (RSM) with center composite design (CCD). The analysis of variance of the quadratic model showed that the model is significant (p value < .0001 and R 2 > 99.4%) and can be used to optimize the removal efficiency of BPA. Optimization results showed that the highest removal efficiency of BPA (100%) and TOC (80.6%) was achieved in optimum conditions of pH 7.8, catalyst dose 0.33 g/L, PMS dose 3.35 mmol/L, BPA concentration 39.3 mg/L, and 78.5 min. In addition, statistical analysis of the data showed that, in the studied range, the initial concentration of BPA was the most influential factor, followed by pH and PMS dose. Highest catalytic stability of Fe/CMK-3 showed the potential applicability of catalyst in the treatment of BPA-containing solutions. The quenching test showed that sulfate radical was the main responsible for the removal of BPA. The decrease in I OUR value after the 75-min reaction time indicates that this process has a high ability for oxidation of the pollutant and its intermediates. Generally, the observed results suggest that the Fe-CMK-3/UV/US/PMS system can be a promising procedure for the removal of persistent pollutants such as BPA from aqueous media.

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Section: Research Articlesupporting

confidence: 78%

Sono‐photo‐assisted heterogeneous activation of peroxymonosulfate by Fe/CMK‐3 catalyst for the degradation of bisphenol A, optimization with response surface methodology

Rahimzadeh

Rahmani

Samadi

et al. 2019

Water Environment Research

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“…The sample of BC-nZVI was dissolved by HCl and the total iron ions in acid solution were analyzed by inductively Coupled plasma spectrometer (ICP-MS 8000; Perkinelmer, Waltham, MA, USA) to determine the actual load of nZVI on BC. The concentration of MO solution was measured using a UV-Spectrophotometer (760CRT, Shanghai precision scientific instrument co., LTD, Shanghai, China) at λ max = 464 nm [26].…”

Section: Characterization and Analytic Methodsmentioning

confidence: 99%

Preparation of Biomass Activated Carbon Supported Nanoscale Zero-Valent Iron (Nzvi) and Its Application in Decolorization of Methyl Orange from Aqueous Solution

Zhang

Wang

2019

Water

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The nanoscale zero-valent iron (nZVI) has great potential to degrade organic polluted wastewater. In this study, the nZVI particles were obtained by the pulse electrodeposition and were loaded on the biomass activated carbon (BC) for synthesizing the composite material of BC-nZVI. The composite material was characterized by SEM-EDS and XRD and was also used for the decolorization of methyl orange (MO) test. The results showed that the 97.94% removal percentage demonstrated its promise in the remediation of dye wastewater for 60 min. The rate of MO matched well with the pseudo-second-order model, and the rate-limiting step may be a chemical sorption between the MO and BC-nZVI. The removal percentage of MO can be effectively improved with higher temperature, larger BC-nZVI dosage, and lower initial concentration of MO at the pH of 7 condition.

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“…Obviously, the results show that the initial zerovalent iron dosage is a factor affecting the process of reducing tetracycline hydrochloride in the US-ZVI system, the removal efficiency of tetracycline hydrochloride can be increased with the increase of the initial zero-valent iron dosage from 0.1 g•L -1 to 0.5 g•L -1 . Since the total surface area of ZVI increases with the increase of the initial ZVI concentration, the mass transfer rate of intermediates, products and reactants in the solution phase with the Fe 0 surface increases [58,59], and the reduction of Fe 0 is enhanced. In addition, Fe 0 has electrochemical characteristics.…”

Section: Effect Of Zvi Dosage On Removal Efficiencymentioning

confidence: 99%

Removal of Tetracycline Hydrochloride (TCH) in Simulated Wastewater by Zero-Valent Iron with Ultrasonic Irradiation (US-ZIV)

Yi¹,

Zhu²,

Yan³

et al. 2020

Pol. J. Environ. Stud.

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In this study, ultrasonic radiation zero-valent iron is used to remove tetracycline hydrochloride in aqueous solution. Zero-valent iron was characterized by SEM and XRD. The mechanism of tetracycline hydrochloride removal process by zero-valent iron was proposed. The effects of initial pH, zerovalent iron dosage, ultrasonic power and tetracycline hydrochloride concentration on the removal of tetracycline hydrochloride in the US-ZVI system were studied in detail. The US-ZVI system produces strong reducing agent •H and new Fe 2+ , which can rapidly reduce tetracycline hydrochloride. The results show that with the US-ZVI system, a lower initial pH helps accelerate the removal of tetracycline hydrochloride. In addition, with the US-ZVI system, with the increase of initial zero-valent iron dosage can promote the degradation of tetracycline hydrochloride. However, compared with pH, the zerovalent iron dosage has less effect on the degradation of tetracycline hydrochloride. In addition, the ultrasonic wave improves the degradation of tetracycline hydrochloride by zero-valent iron. The higher the ultrasonic power, the better the removal effect of tetracycline hydrochloride. However, the initial tetracycline hydrochloride dosage has hardly affected on the degradation efficiency of tetracycline hydrochloride. And the improvement of degradation rate is mainly due to the synergy between US and ZVI. Then, the recycling experiments were carried out. Finally, according to liquid chromatographymass spectrometry results, the degradation pathway of tetracycline hydrochloride was proposed.

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4-Chlorophenol degradation using ultrasound/peroxymonosulfate/nanoscale zero valent iron: Reusability, identification of degradation intermediates and potential application for real wastewater

Cited by 181 publications

References 48 publications

Sono‐photo‐assisted heterogeneous activation of peroxymonosulfate by Fe/CMK‐3 catalyst for the degradation of bisphenol A, optimization with response surface methodology

Sono‐photo‐assisted heterogeneous activation of peroxymonosulfate by Fe/CMK‐3 catalyst for the degradation of bisphenol A, optimization with response surface methodology

Preparation of Biomass Activated Carbon Supported Nanoscale Zero-Valent Iron (Nzvi) and Its Application in Decolorization of Methyl Orange from Aqueous Solution

Removal of Tetracycline Hydrochloride (TCH) in Simulated Wastewater by Zero-Valent Iron with Ultrasonic Irradiation (US-ZIV)

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