Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, 637141, Singapore.
Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
J Hazard Mater. 2019 Mar 15;366:124-129. doi: 10.1016/j.jhazmat.2018.11.102. Epub 2018 Nov 28.
Oil spill-contaminated sands caused by marine oil spillage could severely impact aquatic and terrestrial ecosystems. In this work, self-collapsing microbubbles (MBs)-based method was explored as a chemical free approach for remediation of oil spill-contaminated sands. Tap water and saline water with 32 g/L of sodium chloride were employed as the media to generate MBs. Results showed that almost all oils were removed from the oil spill-contaminated sands after the 40-min treatment with MBs generated in tap water. The oil removal efficiency of MBs in saline water was slightly lower than that in tap water, while more than 90% of oil removal efficiency was still achieved after the 40-min treatment. The analyses by FTIR and UV spectra further confirmed the oil removal from oil spill-contaminated sands by MBs. Consequently, self-collapsing MBs showed a great potential as an environmentally friendly technology for high-efficiency remediation of oil spill-contaminated sands.
溢油污染的沙滩是由海洋溢油造成的，可能会严重影响水生和陆地生态系统。在这项工作中，探索了基于自溃式微泡（MB）的方法作为一种无化学物质的方法来修复溢油污染的沙滩。采用自来水和 32g/L 氯化钠的盐水作为产生 MB 的介质。结果表明，用自来水中产生的 MB 处理 40 分钟后，几乎可以去除污染沙滩上的所有油污。MB 在盐水中的除油效率略低于自来水中的除油效率，但经过 40 分钟的处理后，仍能达到 90%以上的除油效率。FTIR 和紫外光谱分析进一步证实了 MB 从污染沙滩上除油的效果。因此，自溃式 MB 作为一种高效修复溢油污染沙滩的环保技术具有很大的潜力。
