Tianjin
China
Hebei University of Technology
A3O-MBBR, Nitrogen and phosphorus removal, optimization, Microbial community
Dual-frequency ultrasound, Frequency combinations, Bubble radius, PFOA, Persulfate
Economic evaluation, lithium-ion battery, recycling processes, muti objective assessment, Economic prediction
g-C3N4 nanoparticles, Algal-bacterial system, Extracellular polymeric substance, Microbial enzymatic activity, Microbial community analysis.