Mathialagan T, Viraraghavan T
Faculty of Engineering, University of Regina, Regina, Canada S4S 0A2.
Environ Technol. 2005 May;26(5):571-9. doi: 10.1080/09593332608618542.
A 2(5-1) fractional factorial design was conducted for the biosorption of pentachlorophenol (PCP) using Aspergillus niger biomass. Effects of several factors on the percentage removal of PCP from aqueous solutions were evaluated. These factors were as follows: type of biomass (autoclaved- chemically modified); pH (3-11); concentration (1-10 mgl(-1)); temperature (6-32 degrees C); and dissolved oxygen (2.5-20 mgl(-1)). Time of shaking (equilibrium time), volume of the solution and mass of biomass were kept constant. The results showed that type of biomass and pH had a larger impact on the removal of PCP. Concentration of PCP in the aqueous solution, temperature, and dissolved oxygen only marginally affected the removal efficiency of PCP.
采用黑曲霉生物质对五氯苯酚(PCP)进行生物吸附,进行了2^(5 - 1) 分式析因设计。评估了几个因素对从水溶液中去除PCP百分比的影响。这些因素如下:生物质类型(高压灭菌 - 化学改性);pH值(3 - 11);浓度(1 - 10 mg l⁻¹);温度(6 - 32摄氏度);以及溶解氧(2.5 - 20 mg l⁻¹)。振荡时间(平衡时间)、溶液体积和生物质质量保持恒定。结果表明,生物质类型和pH值对PCP的去除影响较大。水溶液中PCP的浓度、温度和溶解氧仅对PCP的去除效率有轻微影响。