Gopal Achari

Professor

Department of Civil Engineering

Associate Dean, Graduate Studies

Schulich School of Engineering

Associate Dean, Research

Schulich School of Engineering

PhD

University of Calgary, 1995

MSc

University of Calgary, 1991

BTech

Indian Institute of Technology, 1987

Contact information

Phone

Office: 403.220.6599

Location

CNRL Engineering Complex: ENC 101

Research

Research areas

  • Water and wastewater treatment
  • Soil remediation
  • Advanced oxidative processes
  • Photolysis and photocatalysis
  • Greenhouse gas control
  • Geopolymers

Research activities

Use of advanced oxidative methods to treat emerging contaminants in water and wastewater

Treatment of sulfolane in water and soils

Treatment of oil sands process waters, boiler and evaporator blowdowns

Pollutant transport modeling and uncertainty analysis

Use of geopolymers to treat mature fine and thickened tailings

 


Biography

Dr. Achari is a professor with the Center for Environmental Engineering Research and Education (CEERE) at the Schulich School of Engineering. His research interests include water and wastewater treatment, soil remediation, technology development for treatment of pollution, advanced oxidative processes - especially photo-based processes, geo-polymers, uncertainty analysis and modeling, and greenhouse gas control mechanisms. He has developed technologies for treating polychlorinated biphenyls (PCBs) in soils, sulfolane treatment in soils and water, and LED based water treatment. His research also includes decision support tools and modeling when there is a lack of complete information using fuzzy logic. Having published extensively in these areas, Dr. Achari is the recipient of numerous awards. Dr. Achari has been a member of RES'EAU-WaterNET, a Canadian strategic research network devoted to developing affordable solutions for providing clean drinking water to small, rural and First Nations communities. He has established research collaborations across countries, helped organize conferences, workshops and technical sessions. Dr. Achari serves as the Associate Dean (Research and Graduate Studies) at the Schulich School of Engineering as well as the Vice President (Technical Divisions) for the Canadian Society for Civil Engineering.


Publications

La*, H., Hettiaratchi, J.P.A., Achari, G. (2018). The influence of biochar and compost mixtures, water content, and gasflow rate, on the continuous adsorption of methane in a fixed bed column. Journal of Environmental Management. Accepted.

Izadifard*, M., Achari, G.and Langford, C.H. (2018). Mineralization of sulfolane in aqueous solutions by Ozone/CaO2 and Ozone/CaO with potential for field application. Chemosphere. 197: 535-540.

Somathilake* P, Dominic* JA, Achari G, Langford CH, Tay JH. (2018). Influence of UV dose on the UV/ H2O2 process for the degradation of carbamazepine in wastewater. Environmental Technology: 1-9 (online).

Jourshabani*,M., Shariatinia Z., Achari G., Langford C.H and Badiei A. (2018). Facile synthesis of NiS2 nanoparticles ingrained in a sulfur-doped carbon nitride framework with enhanced visible light photocatalytic activity: two functional roles of thiourea. Journal of Materials Chemistry A. 6: 13448-13466.

Somathilake* P, Dominic* JA, Achari G, Langford CH, Tay JH. (2018). Degradation of Carbamazepine by Photo-assisted Ozonation: Influence of Wavelength and Intensity of Radiation. Ozone: Science & Engineering. 40(2): 113-121.

Radwan, E.K, Langford, C.H. Achari, G. (2018). Impact of support characteristics and preparation method on photocatalytic activity of TiO2/ZSM-5/silica gel composite photocatalyst. Royal Society Open Science. 5: 1-9. In Press.

Dominic* JA, Somathilake* P, Achari G, Langford CH, Tay JH. (2018). Sunlight Mediated Passive Wastewater Treatment Technology using Photochemical Reduction of Ferric Iron for Decontamination of various Aqueous Contaminants. Solar Energy. 173: 470-477.

Hollman* J, Dominic* JA, Achari G, Langford CH, Tay JH. (2018). Effect of UV dose on degradation of venlafaxine using UVH2O2: Perspective of augmenting UV units in wastewater treatment. Environmental Technology: 1-10 (online).

La*, H., Hettiaratchi, J.P.A., Achari, G., Dunfield, P.F. (2018). Biofiltration of Methane. Bioresource Technology. 268: 759-772.

Yu*, L., Achari, G., Langford, C. H. (2018). Design and evaluation of a novel light emitting diode photocatalytic reactor for water treatment. ASCE, Journal of Environmental Engineering. 144(4): 8014-1 8014-9.

La*, H., Hettiaratchi, J.P.A., Achari, G., Kim, J.-J., Dunfield. (2018). Investigation of Biologically Stable Biofilter Medium for Methane Mitigation by Methanotrophic Bacteria. Journal of Hazardous, Toxic, and Radioactive Waste. 22(3).

Dore, M, Achari, G., Janzen*, A. (2018). Towards Equity in Water Pricing in Small Water Systems: An Alberta Case Study. International Journal of Water Resources and Environmental Engineering. 10(6): 64-75.

Somathilake* P, Dominic* JA, Achari G, Langford CH, Tay JH. (2018). Use of Low Pressure Mercury Lamps with H2O2 and TiO2 for treating Carbamazepine in drinking water: Batch and Continuous Flow Through Experiments. Journal of Water Process Engineering. Accepted

La*, H., Hettiaratchi, J.P.A., Achari, G., Verbeke, T.J., Dunfield. (2018). Biofiltration of methane using hybrid mixtures of biochar, lava rock and compost. Environmental Pollution. 241: 45-54.

Chowdhury, E.H., Hassan, Q., Achari G. and Gupta, A. (2017). Use of Bathymetric and LiDAR Data in Generating Digital Elevation Model over the Lower Athabasca River Watershed in Alberta, Canada. Water. 9(1): 1-16.

Thiessen*, R. and Achari, G. (2017). Abandoned Oil and Gas Well Site Environmental Risk Estimation. Toxicological & Environmental Chemistry. 99(7-8): 1170-1192.

Stein*, D., Achari, G., Langford, C.H., Dore, M.H.I., Haider, H., Zhang*, K. and Sadiq, R. (2017). Performance Management of Small Water Treatment Plant Operations: A Decision Support System. Water and Environment Journal. 31(3): 330-344.

Izadifard*, M., Achari, G. and Langford, C.H. (2017). Degradation of sulfolane using activated persulfate with UV and UV-Ozone. Water Research. 125: 325-331.

Mehrabani-Zeinabad*, M. Achari, G., Langford, C.H. (2016). Degradation of Bisphenol S using O3 and/or H2O2 with UV in a flow-through reactor. ASCE Journal of Environmental Engineering. 142(8): 1-4.

Janzen*, A., Achari, G., Dore, M.H.I and Langford, C.H. (2016). Cost Recovery and Affordability in Small Drinking Water Treatment Plants in Alberta. Journal - American Water Works Association. 108(5): 290-298.

Izadifard*, M., Langford, C.H. and Achari, G. (2016). An Alternative View of Chlorine Oxidation Stimulated by Longer Wavelength Light. ASCE Journal of Environmental Engineering. 142(10): 1-4.

Asma Saeed, Hashmi, I., Zare, A., Mehrabani-Zeinabad*, M., Achari, G., Habibi, H.R. (2016). Efficacy of UV-C photolysis of bisphenol A on biological activity in zebrafish embryos. J. of Environ. & Health Part A:Toxic&Hazardous Substances in Environ. Engrg. 51(11): 877-883.

Yu*, L., Mehrabani-Zeinabad*, M., Achari, G., Langford, C.H. (2016). Advanced Oxidation Process based Treatment of Sulfolane in Aqueous Medium. Chemosphere. 160: 155-161.

Mehrabani-Zeinabad*, M., Yu*, L., Achari, G., Langford, C.H. (2016). Mineralization of sulfolane by UV/O3/ H2O2 in a tubular reactor. Journal of Environmental Engineering and Science. 11(2): 44-51.

Radwan* E.W, Yu*, L., Achari, G., Langford, C.H. (2016). Photocatalytic ozonation of pesticides in a fixed bed flow through UVA-LED photoreactor. Environmental Science and Pollution Research. 23(21): 21313-21318.

Fleming*, M., Achari, G. and Hassan, Q. (2016). Modeling the Loading and Fate of Estrogens in Wastewater Treatment Plants. Cogent Environmental Science. 2(1): 1-15.

Thiessen*, R. J., & Achari, G. (2016). Oil and gas well site reclamation liability estimation. SPE Economics & Management. 8(4): 97-107.

Thiessen*, R.J. and Achari, G. (2015). A well site reclamation prioritisation model framework. Journal of Environmental Engineering and Science. 10(3): 62-72.

Ghosh JP, Achari G, Langford CH. (2015). Design and evaluation of a UV LED photocatalytic reactor using anodized TiO2 nanotubes. Water Environment Research. 88(8): 785-791.

Mehrabani-Zeinabad, M., Achari, G., Langford C.H. (2015). Advanced oxidative degradation of Bisphenol A and Bisphenol S. Journal of Environmental Engineering and Science. 10(4): 92-102.

Radwan* EK, Abdel Ghafar HH, Moursy AS, Langford CH, Bedair AH, Achari G. (2015). Preparation and characterization of humic acid-carbon hybrid materials as adsorbents for organic micro-pollutants. Environmental Science and Pollution Research. 22(16): 12035-12049.

Saeed, A., Hashmi, I., Habibi, H. R., Yu*, L., Achari, G. (2015). Photocatalytic Degradation of 2, 4-D and Transition of Endocrine Disruptive Activity Using Transcriptome Based Bioassay in Zebrafish Embryos. Int. J. of Environ. Sci. and Develop. 6(2): 128-132.

Wang, W, Zhou, J., Achari, G., Yu, J and Cai, W. (2014). Cr(VI) removal from aqueous solutions by hydrothermal synthetic layered double hydroxides: Adsorption performance, coexisting anions and regeneration studies. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 457(5): 33-40.

Tahir AA*, Hassan QK, Achari G. (2014). Development of Remote Sensing Based Models for Water Quality. CLEAN - Soil, Air, Water. 42(8): 1044-1051.

Langford C, Izadifard* M, Radwan E, Achari G. (2014). Some observations on the development of superior photocatalytic systems for application to water purification by the "adsorb and shuttle" or the interphase charge transfer mechanisms. Molecules. 19(12): 19557-19572.

Yu*, L. Achari, G. and Langford, C.H. (2014). Design of a homogeneous radiation field in an LED photoreactor. Journal of Environmental Engineering and Science. 9(4): 214-223.

Dore MHI, Singh R, Achari G, Khaleghi-Moghadam A. (2013). Cost scenarios for small drinking water treatment technologies. Desalination and Water Treatment. 51(16-18): 3628-3638.

Kong J* , Achari G , Langford CH. (2013). Dechlorination of polychlorinated biphenyls in transformer oil using UV and visible light. Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering. 48(1): 92-98.

Yu L* , Izadifard M* , Achari G , Langford CH. (2013). Electron transfer sensitized photodechlorination of surfactant solubilized PCB 138.Chemosphere. 90(9): 2347-2351.

Kong J*, Achari G, Langford CH. (2013). Extraction of PCBs from Transformer Oil and Its Dechlorination using Visible Light. ASCE Journal of Environmental Engineering. 139(5): 627-632.

Zhang* K, Zargar A, Achari G, Islam, S, Sadiq R. (2013). Application of Decision Support Systems in Water Management. Environmental Reviews. 22(3): 189-205.

Zhang K*, Achari G, Li H, Zargar A, Sadiq R. (2013). Machine learning approaches to predict coagulant dosage in water treatment plants. International Journal of Systems Assurance Engineering and Management. 4(2): 205-214.

Dore MHI, Singh R, Khaleghi-Moghadam A, Achari G. (2013). Cost differentials and scale for newer water treatment technologies. International Journal of Water Resources and Environmental Engineering. 5(2): 100-109.

Akbar TA*, Hassan QA, Achari G. (2013). Clusterization of Surface Water Quality and Its Relation to Climate and Land Use/Cover. Journal of Environmental Protection. 4: 333-343.

Yu L*, Achari G, Langford CH. (2013). Photocatalytic treatment of pesticides and chlorophenols with a LED light source. ASCE J. of Environmental Engineering. 139(9): 1146-1151.

Malkhasian, A., Izadifard*, M. Achari, G., Langford, CH. (2013). Photocatalytic degradation of agricultural antibiotics using a UV-LED light source. J. Enviro. Sci. Health, Part B: Pesticides, Food Contaminants and Agricultural Wastes. 49(1): 35-40.

Sha, H*, Thiessen, RJ*, Achari, G. (2013). An Evaluation of Different Risk Ranking Systems. Journal of Environmental Protection. 4: 78-86.

Izadifard*,M. Achari, G., Langford, CH. (2013). Application of Photocatalysts and LED Light Sources in Drinking Water Treatment. Catalysts. 3(3): 726-743.

Dore MHI, Achari G. (2012). Water Pricing Models, Sustainability and Financial Viability of Small Water Systems in Canada. Canadian Civil Engineer. (4): 9-22.

Wang CK*, Achari G. (2012). A Comparison of Performance of Landfill Gas Collection Wells. Open Journal of Waste Management. 39(4): 415-431.

Guirgis A*, Ghosh JP* , Achari G , Langford CH , Banerjee D. (2012). An alternative process to treat boiler feed water for reuse. Water Environment Research. 84(9): 725-732.


Awards

2018

Science, Technology, Engineering and Math Award, Immigrants of Distinction Awards

2016

Elected Fellow, Canadian Society for Civil Engineering

2015

GREAT Supervisor Award
Certificate of Appreciation from Canadian Society of Civil Engineering

2014

Certificate of Appreciation from Canadian Society of Civil Engineering

2012

Certificate of Appreciation from Canadian Society of Civil Engineering

2011

Graduate Research Excellence Award
APEGA Environment and Sustainability (Summit) Award

2010

ASTech Awards Honoree

2009

Department of Civil Engineering Graduate Educator Award
Best Theoretical Oriented Paper Award by ASCE, Practice Periodical of Hazardous, Toxic and Radioactive Waste Management

2008

Department of Civil Engineering Teaching Excellence Award

2007

Professor of the Year

2004

Department of Civil Engineering Teaching Excellence Award

2002

Best Theoretical Paper Award by ASCE, Practice Periodical of Hazardous, Toxic and Radioactive Waste Management

1999

Nominated for Teaching Excellence Award
Canadian Hunter Young Innovator Award

1995 - 1996

University of Calgary Post Doctoral Fellowship

1993 - 1994

Izaak Walton Killam Memorial Scholarship

1992

Killam Scholar Prize for best statement of program of studies and research

1992 - 1993

Izaak Walton Killam Memorial Scholarship

1990

IGS-AIMIL Award for best paper published