- Thunder Bay, Canada
BAOQIANG LIAO
Lakehead University, Chemical engineering, Faculty Member
Developing an effective phycoremediation system, especially by utilizing microalgae, could provide a valuable approach in wastewater treatment for simultaneous nutrient removal and biomass generation, which would help control... more
Developing an effective phycoremediation system, especially by utilizing microalgae, could provide a valuable approach in wastewater treatment for simultaneous nutrient removal and biomass generation, which would help control environmental pollution. This research aims to study the impact of low-voltage direct current (DC) application on Chlorella vulgaris properties and the removal efficiency of nutrients (N and P) in a novel electrokinetic-assisted membrane photobioreactor (EK-MPBR) in treating synthetic municipal wastewater. Two membrane photobioreactors ran in parallel for 49 days with and without an applied electric field (current density: 0.261 A/m2). Mixed liquid suspended soils (MLSS) concentration, chemical oxygen demand (COD), floc morphology, total phosphorus (TP), and total nitrogen (TN) removals were measured during the experiments. The results showed that EK-MPBR achieved biomass production comparable to the control MPBR. In EK-MPBR, an over 97% reduction in phosphate ...
Research Interests:
Research Interests:
Research Interests: Engineering, Chemistry, Membrane Science, Bioreactor, Laser Scanning, and 12 moreMembrane, CHEMICAL SCIENCES, Pulp and Paper Industry, Anaerobic Exercise, Operant Conditioning, Aeration, Fractal Dimension, Flow Rate, Particle Size Distribution, Kraft Pulping, membrane fouling, and Membrane bioreactor
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ABSTRACT Extracellular polymeric substances (EPSs) are key biological substances, which largely determine properties of sludge flocs, including hydrophobicity, adhesion, flocculation, settling and dewatering properties, and therefore... more
ABSTRACT Extracellular polymeric substances (EPSs) are key biological substances, which largely determine properties of sludge flocs, including hydrophobicity, adhesion, flocculation, settling and dewatering properties, and therefore significantly affect membrane fouling in membrane bioreactors (MBRs). Much progress has been achieved in understanding of EPSs and their interrelations with membrane fouling due to a large number of systematic papers published in the last three decades. In this paper, the fundamentals of EPSs including definitions, compositions and properties are summarized. The interrelations of EPSs with other foulants in MBRs are clarified. Roles of EPSs in membrane fouling mechanisms in MBRs are critically assessed. Furthermore, factors affecting EPSs production and characteristics are summarized, and based on which. EPSs control towards membrane fouling mitigation in MBRs are comprehensively discussed. Finally, future research perspectives regarding EPSs and membrane fouling are proposed.
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The concept of thermophilic membrane aerated biofilm reactor (MABR) was investigated for the first time and examined for its potential to treat a high strength synthetic wastewater. Biofilms at 55 °C were successfully grown on gas... more
The concept of thermophilic membrane aerated biofilm reactor (MABR) was investigated for the first time and examined for its potential to treat a high strength synthetic wastewater. Biofilms at 55 °C were successfully grown on gas permeable silicone hollow fiber membranes. At a feed chemical oxygen demand (COD) of 1200 mg/L and a reaction time of 1 d, COD removal efficiency (90%) of the thermophilic MABR (55 °C) was much higher than that (67%) of the mesophilic MABR operated at 18–28 °C. Biofilms in the thermophilic reactor were less thick, more hydrophobic, and less negatively charged. This study indicated that MABRs operated at thermophilic temperatures could be an effective means for controlling biofilm thickness and for the treatment of warm high strength organic waste.Key words: membrane aerated biofilm reactor, thermophilic biofilm, mesophilic biofilm, biofilm characterization, COD removal.
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Research Interests: Engineering, Chemical Engineering, Chemistry, Electrochemistry, Transmission Electron Microscopy, and 15 moreMedicine, Flocculation, Physical sciences, Conceptual Model, Hydrophobic Effect, Hydrogen Bond, CHEMICAL SCIENCES, Hydrogen Bonding, Sewage, Sequencing Batch Reactor, Ionic Strength, Colloid, Static Electricity, Dissociation Constant, and Electrostatic interaction
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Research Interests:
Research Interests: Engineering, Membrane Science, MRI, Membrane Bioreactor Technology, SEM, and 24 moreFTIR, FISH, AFM, Nmr, MFM, Ri, XRD, ESEM, Pi, Membrane, CHEMICAL SCIENCES, XPS, Sec, SMP, Fouling of Membrane, Chemical Composition, EPS, Microbial Community Structure, EdX, NOM, D, CRM, CLSM, and Soluble Microbial Products
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Research Interests:
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