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Information Journal Paper

Title

Sonocatalytic Degradation of p-Chlorophenol by Nanoscale Zero-valent Copper Activated Persulfate under Ultrasonic Irradiation in Aqueous Solutions

Pages

  1060-1069

Abstract

 In this study, nanoscale zero-valent copper (nZVC) as catalyst activated Persulfate (PS) was used for the degradation of p-chlorophenol (p-CP) under ultrasonic (US) irradiation in aqueous solution. The effect of different operational parameters such as solution pH (3. 5-10. 5), PS concentration (1-7. 5 mm/L), nZVC dosage (5-35 mg/L) and initial p-CP concentration (10-100 mg/L) were evaluated at different contact time. Results indicated that US/PS/nZVC system achieve higher efficiency in p-CP degradation than US/PS, US/nZVC and PS/nZVC systems. The optimal p-CP removal efficiency (98%) was achieved within 40 min with 5 mm/L PS and 30mg/L nanocatalyst at 25 mg/L initial p-CP concentration. It was also observed that the p-CP degradation rate depends on initial p-CP concentrations. To clarify the mineralization of p-CP, TOC and COD were analyzed at optimum conditions. COD and TOC removal rate obtained from the US/PS/nZVC system with contact time of 60 min were 61and 75%, respectively. Through the use of methanol (MA) and tert-butyl alcohol (TBA) as radical scavengers, SO4° − was identified as the main radical species that are generated during processes. The removal process of p-CP could be described by the pseudo-first-order kinetics. The apparent degradation rate constant (k) was 0. 076 min-1 in US/PS/nZVC system at optimal conditions.

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    APA: Copy

    SHARIFI, Z., ASGARI, G., & SEID MOHAMMADI, A.. (2020). Sonocatalytic Degradation of p-Chlorophenol by Nanoscale Zero-valent Copper Activated Persulfate under Ultrasonic Irradiation in Aqueous Solutions. INTERNATIONAL JOURNAL OF ENGINEERING, 33(6 (TRANSACTIONS C: Aspects)), 1060-1069. SID. https://sid.ir/paper/750759/en

    Vancouver: Copy

    SHARIFI Z., ASGARI G., SEID MOHAMMADI A.. Sonocatalytic Degradation of p-Chlorophenol by Nanoscale Zero-valent Copper Activated Persulfate under Ultrasonic Irradiation in Aqueous Solutions. INTERNATIONAL JOURNAL OF ENGINEERING[Internet]. 2020;33(6 (TRANSACTIONS C: Aspects)):1060-1069. Available from: https://sid.ir/paper/750759/en

    IEEE: Copy

    Z. SHARIFI, G. ASGARI, and A. SEID MOHAMMADI, “Sonocatalytic Degradation of p-Chlorophenol by Nanoscale Zero-valent Copper Activated Persulfate under Ultrasonic Irradiation in Aqueous Solutions,” INTERNATIONAL JOURNAL OF ENGINEERING, vol. 33, no. 6 (TRANSACTIONS C: Aspects), pp. 1060–1069, 2020, [Online]. Available: https://sid.ir/paper/750759/en

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