Optimal levels of 4 factors for treatment of PTA wastewater with GEM Fhhh

Abstract

The optimal levels of the 4 factors, pH, temperature, total nitrogen and total phosphorus, for the genetically engineered microorganism strain (GEMs) Fhhh and its parental strains of the native bacterium YZ1 and the fungus Phanerchaete chrysosporium (PC) in degradation of purified terephthalic acid(PTA) wastewater were conducted. The results showed that the 4 factors had their optimal levels for Fhhh, PC and YZ1 in degradation of the PTA wastewater respectively. On the basis of the 4 partial optimal mathematical models obtained, the multiply optimal mathematical models were also made while the 4 factors were all at their optimal levels. The highest values of the specific degradation rate for Fhhh, PC, YZ1 were 0.224, 0.167 and 0.018 h -1 respectively. Meanwhile, the amount of the changed energy were 2.33, 1.42 and 0.13 J/(g·h). The reaction of PTA wastewater degradation could happen continuously without the energy input. It suggested that the data would be useful for making an efficient artificial intelligence system to the optimization of the PTA wastewater treatment system.