Jeong Euisoon, Hirai Mitsuyo, Shoda Makoto
Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
J Biosci Bioeng. 2006 Oct;102(4):281-7. doi: 10.1263/jbb.102.281.
As a p-xylene (p-Xyl)-degrading microorganism, Pseudomonas sp. NBM21 was isolated from an activated sludge of a wastewater treatment plant. NBM21 degraded p-Xyl, m-xylene, benzene and toluene, but not o-xylene, ethylbenzene (Eb) and styrene. NBM21 was inoculated to a biofilter with Biosol as a packing material and p-Xyl removal was operated for 105 d under sterile and nonsterile conditions. The maximum elimination capacities for p-Xyl at higher than 90% removal efficiency were 160 g/m3/h and 150 g/m3/h under nonsterile and sterile conditions, respectively. A high load of Eb adversely affected to the removal of xylene.
作为一种对二甲苯(p-Xyl)降解微生物,假单胞菌属NBM21是从一家污水处理厂的活性污泥中分离出来的。NBM21能降解对二甲苯、间二甲苯、苯和甲苯,但不能降解邻二甲苯、乙苯(Eb)和苯乙烯。将NBM21接种到以Biosol为填料的生物滤池中,在无菌和非无菌条件下进行了105天的对二甲苯去除操作。在去除效率高于90%时,非无菌和无菌条件下对二甲苯的最大去除能力分别为160 g/m3/h和150 g/m3/h。高负荷的乙苯对二甲苯的去除有不利影响。