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首页> 外文期刊>Journal of Hazardous Materials >Development of polystyrene coated persulfate slow-release beads for the oxidation of targeted PAHs: Effects of sulfate and chloride ions
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Development of polystyrene coated persulfate slow-release beads for the oxidation of targeted PAHs: Effects of sulfate and chloride ions

机译：用于靶向PAHS氧化的聚苯乙烯涂层过硫酸盐缓释珠的发展：硫酸盐和氯离子的影响

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摘要

In this study, we synthesized polystyrene coated persulfate polyacrylonitrile beads (PC-PSPANBs) to control persulfate (PS) release for targeted PAHs' degradation in a batch reactor. Initially, the persulfate release rate (ksr = 20.553 h-1) from PSPANBs was fast, but coating the PSPANBs with polystyrene controlled PS release rate (ksr 1/4 2.841 h-1), nearly ten times slower than without coating. When Fe(II) activated PC-PSPANBs applied for 12 h degradation of acenaphthene (ACE), 2-methlynaphthalene (2-MN) and dibenzofuran (DBF), the optimum percent removal efficiencies (% R.Es) were as ACE (82.12%) DBF (68.57%) 2-MN (58.80%) and the optimum degradation rate constants (kobs) were found as ACE (11.348 h-1) 2-MN (3.441 h-1) DBF (1.101 h-1). The effect of SO42- and Cl- on ACE degradation showed that % R.E and kobs were enhanced with increasing anionic concentrations. The maximum % R.E was achieved for SO42- (76.24%) Cl-(65.51%), but the highest kobs was in case of Cl- (1.536 h-1) SO42- (0.510 h-1). The effectiveness of PS release longevity was also found because net degradations of ACE and DBF after first spiking were 12 mg L-1 and 16 mg L-1, while after second spiking were 18 mg L-1 and 10 mg L-1, respectively.
机译：在该研究中，我们合成聚苯乙烯涂覆过硫酸盐聚丙烯腈珠粒（PC-PSPANBS）以控制批量反应器中靶向PAHS降解的过硫酸盐（PS）释放。最初，来自PSPanbs的过硫酸盐释放率（KSR = 20.553 H-1）快，但用聚苯乙烯控制的PS释放速率（KSR 1/4 2.841 H-1）涂覆PSPanBs，比没有涂层的速度较慢近十倍。当Fe（II）活化的PC-PSPanbs施用12小时的 - 甲烷（ACE），2-甲基萘（2-MN）和二苯并呋喃（DBF）的时，最佳去除效率（％R.ES）为ACE（82.12 ％）＆ DBF（68.57％）＆发现2-Mn（58.80％）和最佳降解速率常数（Kobs）作为ACE（11.348H-1）＆GT; 2-Mn（3.441 H-1）＆ DBF（1.101 H-1）。 SO42和CL-对ACE降解的影响表明，随着阴离子浓度的增加，增强了％R.E和KOB。 SO42-（76.24％）＆gt实现的最大％R.E; CL-（65.51％），但最高的KOB是在CL-（1.536 H-1）＆GT的情况下; SO42-（0.510 H-1）。还发现了PS释放寿命的有效性，因为第一次尖刺后ACE和DBF的净降解分别为12mg L-1和16mg L-1，而第二次尖峰分别为18mg L-1和10mg L-1。 。

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  • 来源
    《Journal of Hazardous Materials》 |2021年第2期|125879.1-125879.9|共9页
  • 作者

    Abbas Wajahat; Abbas Shujaat; Nawaz Mohsin; Azam Mudassar; Oh Jae-Min; Shahzad Asif;

  • 作者单位

    Kyungpook Natl Univ Sch Architectural Civil Environm & Energy Engn Daegu 41566 South Korea;

    Inst Southern Punjab Civil Engn Dept Multan Pakistan;

    Muhammad Nawaz Shareef Univ Agr Dept Agr Engn Old Shujabad Rd Multan 60000 Pakistan;

    Univ Punjab Inst Chem Engn & Technol Lahore 54590 Pakistan;

    Dongguk Univ Dept Energy & Mat Engn Seoul 04620 South Korea;

    Dongguk Univ Dept Energy & Mat Engn Seoul 04620 South Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Persulfate slow-release beads; Ferrous; PAHs; Sulfate ion; Chloride ion;

    机译：过硫酸盐慢释放珠子;黑色;PAHS;硫酸根离子;氯离子;

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