|Academic Profile |
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Assoc Prof Lim Teik Thye
Professor, School of Civil and Environmental Engineering
|Prof. Lim is currently in the Division of Environmental & Water Resources Engineering, School of Civil & Environmental Engineering. He received his Bachelor degree in Civil Engineering (University of Malaya, Malaysia), Masters degree in Geo-environmental Engineering (Nanyang Technological University, Singapore), and PhD degree in Environmental Engineering (Nanyang Technological University, Singapore). |
He provides expert services in the fields of advanced water treatment and reclamation, pollution control, environmental site assessment, environmental monitoring, and hazardous waste site rehabilitation. He is also engaged by local authorities or organizations to provide independent third party review for environmental projects. He also conducts training courses to professionals working in the field of water and soil pollution control.
|My core research fields are: |
Advanced oxidation processes for water and wastewater treatment
Environmental catalysis for wastewater treatment
Environmental nanomaterials for water decontamination
My secondary research field is:
Waste-to-energy and waste-to-materials
Brief summaries of my research projects are listed below.
Catalytic advanced oxidation processes (AOPs)
I have 15 years of research track records in redox technologies for surface water, wastewater and groundwater treatment. For the oxidation technologies, my research activities cover sulfate-radical based advanced oxidation process or SR-AOP (homogeneous and heterogeneous), UV-based AOP (homogeneous and heterogeneous), Fenton processes (heterogeneous), photocatalysis (heterogeneous), electrochemical oxidation, and sonochemical oxidation, and hybrid AOPs. On SR-AOP, my group has made significant contribution to the scientific community in terms of advancing the understanding of the mechanisms of the heterogeneous SR-AOP with metal oxides (monometallic oxide and bimetallic oxides) and carbonaceous materials as catalysts to activate peroxymonosulfate (PMS) and peroxydisulfate (PDS). We have discussed our works in our numerous scientific papers and 3 critical reviews in the top journals. Specifically, we have provided insights into the radical and non-radical reaction pathways associated with transformation and mineralization of a wide range of organic emerging micropollutants such as antibiotics, cytostatic drugs, bisphenol A and industrial chemicals. On the homogeneous SR-AOP, our group is among the leading contributor to post-formation mitigation strategy for controlling iodinated disinfection by-products such as iodinated trihalomethanes and iodoacids in RO water. Our group also developed composite catalytic materials which comprise mixed metal oxides, bimetallic oxides, and catalyst-nanocarbon composites that exhibit multifunctional properties such as combined catalysis, adsorption-promoted catalysis, “switchable” catalysis, etc. Our iron-based catalytic composites can function as Fenton catalyst, photo-Fenton catalyst and photocatalyst, such that their applications can be switched over the day/night cycle. When irradiated with sunlight, they trigger sunlight-driven photocatalytic redox degradation of organic pollutants without any chemical addition. The materials can be recovered from the treated water using magnet. We have also developed a hybrid TiO2-activated carbon composites, which can be used as solar-driven photocatalyst or solar-regenerable adsorbent. This invention has been approved for PCT filing as a recognition of our intellectual property.
Catalytic ceramic membrane for removing recalcitrant organics
Over the last 10 years, my group has advanced the research of coupling catalytic oxidation and membrane separation process. The synergistic processes were enabled through our catalytic ceramic membrane research. We developed three types of such hybrid membranes: (1) photocatalytic membrane, (2) catalytic sulfate-radical oxidation membrane, and (3) catalytic ozonation ceramic membrane. One of our inventions, Ag-decorated photocatalytic TiO2-coated alumina membrane, has three functionalities: antibacterial and antibiofouling property, photocatalytic activity, and separation function with membrane pore sizes down to 4 nm.
The details of my research activities and publications are available at https://www.ntu.edu.sg/home/cttlim/
- A Novel Approach to Reutilize Incineration Bottom Ash (IBA) for Civil Engineering Applications: IBA Aerated Concrete
- Advanced Combustion And Corrosion Control System For Steam Boilers in WtE Gasification Plants
- Controlled Synthesis of Catalytic Polyoxometalates for the Removal of Phenol from Waste Water
- Nitrogen-Doped TIO2-Activated Carbon (AC) Composite for Adsorptive Photocatalytic Oxidation-Reduction of Refractory Organic Substances Under Solar Irradiation in Water Purification
- Sustainable materials: green avenues towards high value products
- Use of Copper Slag as a Land Reclamation Fill Material in Singapore
- Use of Copper Slag as a Land Reclamation Fill Material in Singapore (MOE)
- Zero-Liquid Discharge from Water Reclamation through Hybrid Multiplex Catalytic Oxidation Process
- Oh W.D.*, Lei J., Veksha A., Giannis A., Chan W.P., Lisak G., Lim T.T.*. (2018). Ni-Zn-based nanocomposite loaded on cordierite mullite ceramic for syngas desulfurization: Performance evaluation and regeneration studies. Chemical Engineering Journal, 351, 230-239.
- Chen X., Oh W.D., Lim T.T.*. (2018). Graphene- and CNTs-based carbocatalysts in persulfates activation: material design and catalytic mechanisms. Chemical Engineering Journal, 354, 941-976.
- Chanaka Udayanga W.D., Veksha A., Giannis A., Lisak G., Chang V.W.C., Lim T.T.*. (2018). Fate and distribution of heavy metals during thermal processing of sewage sludge. Fuel, 226, 721-744.
- W.-D. Oh*, G. Lisak, R.D. Webster, Y.-N. Liang, A. Veksha, A. Giannis, J.G.S. Moo, J.-W. Lim, T.T. Lim*. (2018). Insights into the thermolytic transformation of lignocellulosic biomass waste to redox-active carbocatalyst: Durability of surface active sites. Applied Catalysis B: Environmental, 233, 120-129.
- Chen X., Oh W.D., Hu Z.T., Sun Y.M., Webster R.D., Li S.Z., Lim T.T.*. (2018). Enhancing sulfacetamide degradation by peroxymonosulfate activation with N-doped graphene produced through delicately-controlled nitrogen functionalization via tweaking thermal annealing processes. Applied Catalysis B: Environmental, 225, 243–257.