Olorundare O F, Msagati T A M, Krause R W M, Okonkwo J O, Mamba B B
Nanotechnology for Water Sustainability Research Unit, UNISA Science Campus, University of South Africa, Florida 1709, Johannesburg, South Africa.
Environ Sci Pollut Res Int. 2015 Apr;22(8):5780-92. doi: 10.1007/s11356-014-3742-6. Epub 2014 Oct 30.
The determination and remediation of three phenolic compounds bisphenol A (BPA), ortho-nitrophenol (o-NTP), parachlorophenol (PCP) in wastewater is reported. The analysis of these molecules in wastewater was done using gas chromatography (GC) × GC time-of-flight mass spectrometry while activated carbon derived from maize tassel was used as an adsorbent. During the experimental procedures, the effect of various parameters such as initial concentration, pH of sample solution, eluent volume, and sample volume on the removal efficiency with respect to the three phenolic compounds was studied. The results showed that maize tassel produced activated carbon (MTAC) cartridge packed solid-phase extraction (SPE) system was able to remove the phenolic compounds effectively (90.84-98.49%, 80.75-97.11%, and 78.27-97.08% for BPA, o-NTP, and PCP, respectively). The MTAC cartridge packed SPE sorbent performance was compared to commercially produced C18 SPE cartridges and found to be comparable. All the parameters investigated were found to have a notable influence on the adsorption efficiency of the phenolic compounds from wastewaters at different magnitudes.
报道了废水中三种酚类化合物双酚A（BPA）、邻硝基苯酚（o-NTP）、对氯苯酚（PCP）的测定及修复情况。采用气相色谱（GC）×气相色谱飞行时间质谱法对废水中的这些分子进行分析，同时使用玉米穗轴衍生的活性炭作为吸附剂。在实验过程中，研究了初始浓度、样品溶液pH值、洗脱液体积和样品体积等各种参数对三种酚类化合物去除效率的影响。结果表明，玉米穗轴制备的活性炭（MTAC）柱填充固相萃取（SPE）系统能够有效去除酚类化合物（BPA、o-NTP和PCP的去除率分别为90.84 - 98.49%、80.75 - 97.11%和78.27 - 97.08%）。将MTAC柱填充的SPE吸附剂性能与商业生产的C18 SPE柱进行了比较，发现具有可比性。研究发现，所有研究参数对不同程度废水中酚类化合物的吸附效率都有显著影响。
