Division of Biotechnology, Advanced institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan, Jeonbuk 570-752, South Korea.
J Hazard Mater. 2010 Oct 15;182(1-3):317-24. doi: 10.1016/j.jhazmat.2010.06.032. Epub 2010 Jun 15.
Bioremediation is an innovative and alternative technology to remove heavy metal pollutants from aqueous solution using biomass from various microorganisms like algae, fungi and bacteria. In this study biosorption of zinc onto live, dead and dried biomass of Fusarium spp. was investigated as a function of initial zinc(II) concentration, pH, temperature, agitation and inoculum volume. It was observed that dried, dead and live biomass efficiently removed zinc at 60 min at an initial pH of 6.0+/-0.3. Temperature of 40 degrees C was optimum at agitation speed of 150 or 200 rpm. The initial metal concentration (10-320 mg L(-1)) significantly influenced the biosorption of the fungi. Overall, biosorption was high with 30-60% by dried, live and dead biomass. In addition to this, the potential of Fusarium spp. to produce zinc nanocrystals was determined by transmission electron microscopy, energy-dispersive spectroscopy, X-ray diffraction and fourier transform infrared spectroscopy, which showed that dead biomass was not significantly involved in production of zinc nanocrystals.
生物修复是一种创新的替代技术，可利用藻类、真菌和细菌等各种微生物的生物质从水溶液中去除重金属污染物。在这项研究中，研究了蕈类属（Fusarium spp.）的活的、死的和干燥的生物质对锌的生物吸附作用，作为初始锌(II)浓度、pH 值、温度、搅拌和接种物体积的函数。结果表明，在初始 pH 值为 6.0+/-0.3 的条件下，干燥、死亡和活的生物质在 60 分钟内可有效地去除锌。在 150 或 200 rpm 的搅拌速度下，40 摄氏度的温度是最佳的。初始金属浓度（10-320 mg L(-1))显著影响真菌的生物吸附。总的来说，干燥、活的和死的生物质的吸附率高达 30-60%。此外，通过透射电子显微镜、能量色散光谱、X 射线衍射和傅里叶变换红外光谱确定了蕈类属（Fusarium spp.）产生锌纳米晶体的潜力，结果表明死生物质在锌纳米晶体的产生中没有起到显著的作用。
