Abstract:Aiming at the problem of effective application of Penicillium sp. L1 mycelial pellets in wastewater treatment, their performance was optimized through the culture time, inoculation size and pH, and SEM was used to characterize the optimized mycelium pellets. The degradation effect was studied when the optimized mycelial pellets loaded with mixed bacteria FG-06 treated coking wastewater, and the effects of inoculation size, rotation rate and reuse times on the adsorption of crystal violet onto the optimized mycelial pellets were investigated. The results showed that, the optimized mycelium pellets showed regular network structure with strong mycelium. In the experiment of treating coking wastewater, the degradation response time of phenol was significantly shortened using 90 mycelial pellets loaded with the mixed bacteria FG-06, and the degradation rate of ammonia nitrogen and phenol was significantly improved. In 20 mL crystal violet solution with initial concentration of 50 mg·L?1, 20 mycelial pellets had better adsorption performance at shaking rate of 120 r·min?1, and the reused mycelial pellets after 3 times still remained the decolorization efficiency above 86%. The mycelial pellet after optimization of the globular conditions is an ideal immobilization carrier with a good decolorization performance. Key words:coking wastewater/ dye adsorption/ mycelial pellets/ optimization/ microbial immobilization.
图1成球条件优化对菌丝球特性的影响 Figure1.Effect of globular conditions optimization on the characteristics of mycelial pellets
图2菌丝球优化前后的实物图片和优化后不同倍数的SEM图 Figure2.Physical pictures before and after optimization and SEM images withdifferent multiples of the optimized mycelial pellets
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College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China Received Date: 2018-12-25 Accepted Date: 2019-05-20 Available Online: 2019-10-11 Keywords:coking wastewater/ dye adsorption/ mycelial pellets/ optimization/ microbial immobilization Abstract:Aiming at the problem of effective application of Penicillium sp. L1 mycelial pellets in wastewater treatment, their performance was optimized through the culture time, inoculation size and pH, and SEM was used to characterize the optimized mycelium pellets. The degradation effect was studied when the optimized mycelial pellets loaded with mixed bacteria FG-06 treated coking wastewater, and the effects of inoculation size, rotation rate and reuse times on the adsorption of crystal violet onto the optimized mycelial pellets were investigated. The results showed that, the optimized mycelium pellets showed regular network structure with strong mycelium. In the experiment of treating coking wastewater, the degradation response time of phenol was significantly shortened using 90 mycelial pellets loaded with the mixed bacteria FG-06, and the degradation rate of ammonia nitrogen and phenol was significantly improved. In 20 mL crystal violet solution with initial concentration of 50 mg·L?1, 20 mycelial pellets had better adsorption performance at shaking rate of 120 r·min?1, and the reused mycelial pellets after 3 times still remained the decolorization efficiency above 86%. The mycelial pellet after optimization of the globular conditions is an ideal immobilization carrier with a good decolorization performance.