Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore.
Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
Mar Pollut Bull. 2017 Nov 15;124(1):331-335. doi: 10.1016/j.marpolbul.2017.07.041. Epub 2017 Jul 25.
In this article, we investigated the effect of low intensity pulsed ultrasound (US), temperature and salinity on cleaning efficacy of fine bubbles with diameter <50μm for diesel contaminated sands. About 47% and 76% diesel removal was achieved from 10% (w/w) diesel contaminated fine and medium sands respectively, after 30min treatment with 40kHz low intensity intermittent pulsed US together with MBs in contrast to 41% and 68% diesel removal while treatment with MBs alone. The effect of high temperature was found to be prominent during the initial stages of cleaning. In addition, MBs generated in 599mM saline water efficiently removed 85% diesel from fine sand within 30min in contrast to only 41% diesel removal with MBs in fresh water. This study provides evidence for developing highly efficient MBs based chemical free technology for diesel contaminated sediments.
本文研究了低强度脉冲超声（US）、温度和盐度对直径<50μm 的微泡清洗柴油污染砂的效果。与单独使用微泡相比，在用 40kHz 低强度间歇脉冲 US 和微泡处理 30min 后，分别从 10%（w/w）柴油污染的细砂和中砂中去除了约 47%和 76%的柴油，而单独使用微泡处理后则去除了 41%和 68%的柴油。研究发现，高温在清洗的初始阶段效果显著。此外，在 30min 内，在 599mM 盐水中生成的微泡从细砂中有效地去除了 85%的柴油，而在淡水中仅用微泡去除了 41%的柴油。本研究为开发高效的基于微泡的无化学柴油污染沉积物处理技术提供了证据。
