Iorio Marianna, Pan Bo, Capasso Renato, Xing Baoshan
Department of Plant, Soil and Insect Sciences, University of Massachusetts, Stockbridge Hall, Amherst, MA 01003, USA.
Environ Pollut. 2008 Dec;156(3):1021-9. doi: 10.1016/j.envpol.2008.05.003. Epub 2008 May 27.
Intent of this study was to explore the potential application of polymerin, the polymeric, dissolved organic matter fraction from olive oil wastewaters, in technologies aimed at remediating hydrophobic organic compounds (HOCs) point-source pollution. Phenanthrene binding with polymerin was investigated. Moreover, the effect of addition of micro and nanoscale aluminum oxides (Al2O3) was studied, as well as sorption of polymerin on the oxides. Phenanthrene binding capacity by polymerin was notably higher than the sorption capacities for both types of Al2O3 particles. Polymerin sorption on nanoparticles was nearly 100 times higher than microparticles. In a three-phase system, using microparticles, higher phenanthrene sorption was found by adding into water polymerin, oxides and phenanthrene simultaneously. In contrast, using nanoparticles, a considerable enhancement of phenanthrene sorption was shown by adding phenanthrene to a pre-formed and dried polymerin-oxide complex. These findings support the application of polymerin, especially associated with Al2O3 nanoparticles, in remediation of water contaminated with HOCs. This work highlights the significant role of nanoparticles.
本研究的目的是探索橄榄油废水中的聚合物（一种聚合态的溶解性有机物组分）在修复疏水性有机化合物（HOCs）点源污染技术中的潜在应用。研究了菲与聚合物的结合情况。此外，还研究了添加微米级和纳米级氧化铝（Al2O3）的效果，以及聚合物在氧化物上的吸附情况。聚合物对菲的结合能力明显高于两种类型Al2O3颗粒的吸附能力。聚合物在纳米颗粒上的吸附量比在微米颗粒上高近100倍。在三相体系中，使用微米颗粒时，通过同时向水中添加聚合物、氧化物和菲，发现菲的吸附量更高。相比之下，使用纳米颗粒时，通过向预先形成并干燥的聚合物 - 氧化物复合物中添加菲，显示出菲的吸附量有显著提高。这些发现支持了聚合物，特别是与Al2O3纳米颗粒结合的聚合物，在修复受HOCs污染水体中的应用。这项工作突出了纳米颗粒的重要作用。
