分散蓝2BLN染料废水脱色菌分离鉴定及特性研究

以蒽醌分散蓝2BLN染料废水为研究对象,从活性污泥中筛选出高效脱色菌株,经形态学、16SrDNA测序及系统发育分析,鉴定该菌株属于嗜水气单细胞菌属(Aeromonas hydrophila),命名为GN-1。研究了盐度、温度和pH值等因素对菌株GN-1脱色效果的影响,结果表明,盐度为1%时达到最大脱色率84.57%。温度为35℃和pH为7时其脱色率分别可达85.29%和83.83%。紫外和GC-MS分析表明菌株GN-1对分散蓝2BLN染料的脱色主要是生物降解作用,分散蓝2BLN显色基团的结构被破坏,达到脱色效果。     

Theoretical study of all-optical NRZ to RZ format conversion with tunable pulse width based on XPM in a silicon waveguide

An all-optical format conversion from non-return-to-zero(NRZ) to return-to-zero(RZ) is presented based on cross-phase modulation(XPM) in a silicon waveguide with a detuned optical bandpass filter(OBPF).The simulation results show that the tunable bandwidth of the OBPF leads to RZ signals with tunable pulse width.The conversion efficiency(CE) and the pattern effect of the RZ signal are attributed to the parameters of the pump pulse and the OBPF.The converted RZ signal exhibits lower timing jitter than the NRZ signal.