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Waste Disposal & Sustainable Energy
Waste Disposal & Sustainable Energy  2021, Vol. 3 Issue (1): 73-81    DOI: 10.1007/s42768-020-00066-5
    
基于等离子体技术的石油污染海水修复
Plasma remediation for petroleum pollution of the sea
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摘要： 本文介绍了辉光放电等离子体在海洋石油污染修复中的应用，并基于柴油为处置目标污染物开展了实验室规模的系列研究。其中，放电电压、气体流速、NaCl浓度、初始温度、柴油初始浓度等因素对辉光放电等离子体系统处置柴油的性能影响较大，并通过计算柴油降解率和能量效率来确定最佳反应条件。实验结果表明，2178 mg/L柴油溶液经过12min处理后，去除率为93.3%，能量产率为17?g (kWh)?1。17g(kWh)-1随着电压的升高，去除率会升高，但产率可能会降低。柴油去除效率在气体流量系数为700 mL/min时达到最大值，随着气体流量的增加而降低，在气体流量为1000 mL/min时由于放电不稳定而达到最小值。降低NaCl浓度可以提高柴油的去除效率，因为电导率会显著影响柴油降解效率。此外，温度和初始浓度对反应速率常数影响不大，但初始浓度越高，能量效率越高。在柴油修复过程中，溶液的pH值会下降到2.76，但溶液的电导率和温度都有所增加，特别是温度会从25℃增加到63℃。
Abstract: This paper is concerned about the application of glow discharge plasma for the remediation of petroleum pollution of the sea. We used diesel fuel as the processing target and conducted a series of lab-scale studies. Several factors including the discharge voltage, gas flow rate, the concentration of NaCl, initial temperature, and initial concentration of diesel fuel can influence the performance of glow discharge plasma systems on removal efficiency of diesel fuel. To determine the optimal reaction conditions, the diesel degradation rate and energy efficiency were calculated. The experiment result for 2178 mg/L diesel fuel solution treatment was that removal efficiency of 93.3% was achieved after 12 min treatment with the energy yield of 17?g (kWh)?1. Higher voltage leads to larger removal efficiency, while the energy yield may be reduced. The removal efficiency of diesel fuel reached the maximum at the gas flow rate factor 700 mL/min, decreased with an increase in gas flow rate, and became a minimum value when the gas flow rate is 1000 mL/min as a result of the unstable discharge. Decreasing the concentration of sodium chloride can cause an increase in the removal efficiency of diesel fuel, because the conductivity tended to significantly increase the degradation efficiency. Moreover, temperature and initial concentration are demonstrated to have little influence on the rate constant, but higher initial concentration favors higher energy efficiency. During the remediation of diesel fuel, pH decreases to 2.76, while the conductivity of the solution and temperature are increased, especially for the temperature, which has an increase from 25 °C to 63 °C.
出版日期: 2021-06-27
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ZiKe Qiu
ZhanYi Zhang
ZhiXing Mo
Meng Li & ChangMing Du

引用本文:

ZiKe Qiu, ZhanYi Zhang, ZhiXing Mo, Meng Li & ChangMing Du. Plasma remediation for petroleum pollution of the sea. Waste Disposal & Sustainable Energy, 2021, 3(1): 73-81.

链接本文:

https://www.zjujournals.com/wdse/CN/10.1007/s42768-020-00066-5    或    https://www.zjujournals.com/wdse/CN/Y2021/V3/I1/73

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