Biotreatment of p-nitrophenol and nitrobenzene in mixed wastewater through selective bioaugmentation.
This work combined selective adsorption and bioaugmentation to treat mixed wastewater of nitrobenzene and p-nitrophenol. The mixed wastewater of nitrobenzene (217 mg/L) and p-nitrophenol (500 mg/L) was adjusted its pH to 8 and then passed through the adsorption column at 100 mL/h. In effluent the nitrobenzene concentration was less than 4 mg/L. Without the toxic inhibition of nitrobenzene, p-nitrophenol in effluent could be degraded within 60 h through bioaugmentation. About 23 mg/g of nitrobenzene adsorbed the dry resin HU-05 could be desorbed and degraded through bioaugmentation. During this process the adsorption capacity of the resin HU-05 was recovered partly. The recovered extent was limited by nitrobenzene bioavailability. The performance of the resin HU-05 kept stably in the recycle experiments of 60 days.
Hu
Xuewei
X
State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093, PR China.
Li
Aimin
A
Fan
Jun
J
Deng
Conglin
C
Zhang
Quanxing
Q
D000327:Adsorption; D001673:Biodegradation, Environmental; D019149:Bioreactors; D001709:Biotechnology / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D009578:Nitrobenzenes / Q000032:analysis* / Q000737:chemistry; D009596:Nitrophenols / Q000032:analysis* / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D012116:Resins, Plant / Q000737:chemistry; D014865:Waste Disposal, Fluid; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
D007220:Industrial Waste; D009578:Nitrobenzenes; D009596:Nitrophenols; D011108:Polymers; D012116:Resins, Plant; D014874:Water Pollutants, Chemical; C036077:nitrobenzene; C024836:4-nitrophenol