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Areas of Research

• Physical Chemical Treatment Processes
• Disinfection Byproducts
• Natural Organic Matter
• Stormwater Treatment
• Biological Filtration

Awards and Honors

• Excellent Paper Award (with Morgan Salo and Abdoul Kouanda), the GSRD International Conference on Chemical, Agricultural, Biological and Environmental Sciences, Seoul, South Korea, July 2019.
• Major Advisor to Student Poster Award (1st Place, Abdoul Kouanda), Eastern South Dakota Water Conference, Brookings, 2018.
• Major Advisor to Student Poster Award (1st Place, Peng Dai), Eastern South Dakota Water Conference, Brookings, 2017.
• Major Advisor to Student Poster Award (2nd Place, Ibrahim Abusallout), Eastern South Dakota Water Conference, Brookings, 2017
• Major Advisor to Boyd-Scott Graduate Research Award (Bjorn Sellner, 2nd Place in MS Category), American Society of Agricultural and Biological Engineers Annual International Meeting, Orlando, Florida, 2016.
• Major Advisor to Outstanding Graduate Student Oral Presentation Award (Bjorn Sellner), Student Water Conference, Stillwater, Oklahoma, 2016.
• Major Advisor to Outstanding Graduate Student Poster Award (Bjorn Sellner), Student Water Conference, Stillwater, Oklahoma, 2015.
• Major Advisor to Student Poster Award (1st Place, Morgan Salo), Eastern South Dakota Water Conference, Brookings, 2014.
• Major Advisor to Student Poster Award (2nd Place, Bjorn Sellner), Eastern South Dakota Water Conference, Brookings, 2014.
• AWWA Water Science and Research Division Best Paper Award, 2009.
• AWWA Water Quality and Technology Division Best Poster Award, AWWA Annual Conference, Atlanta, Georgia, 2008.
• AWWA Water Quality and Technology Conference Best Student Paper Award, Denver, Colorado, 2006.

Grants

1. Evaluation of Nitrate Removal Rates of Denitrification Bioreactors Using Agricultural Residue Media. USGS 104b, East Dakota Water Development District, and ������Ƶ, $136,274, March 2017-June 2019.
2. The Role of Volatile Organic Compounds in Chemical Reactions and Mechanisms in the Water and Soil. US DoD/Army Research Office, $203,952, April 2017-April 2018.
3. Nutrient and Bacteria Removal in Subsurface Drainage Using Denitrification Bioreactors and Filters. SD Soybean Research and Promotion Council, $129,635, July 2016-June 2018.
4. Development of Mixed Media Filtration for Stormwater Runoff Treatment. USDOT-Mountain Plains Consortium, East Dakota Water Development District, James River Water Development District, and ������Ƶ, $140,384, September 2015 - August 2017.
5. Reuse of Aqueous Waste Streams in Transportation-Related Applications. USDOT-Mountain Plains Consortium, and SDDOT, $65,000, July 2015 - February 2016.
6. Controlling Harmful Algal Blooms in Eutrophic Lakes by Combined Phosphorus Precipitation and Sediment Capping. USGS 104b, East Dakota Water Development District, and ������Ƶ, $129,985, March 2015-February 2017.
7. Using Denitrification Bioreactors and Phosphate Adsorption Media to Remove Nutrients from Agricultural Subsurface Drainage. SD Soybean Research & Promotion Council, $115,548, July 2014 - July 2016.
8. Nutrient Removal from Agricultural Subsurface Drainage Using Denitrification Bioreactors and Phosphate Adsorbents. USGS 104b, East Dakota Water Development District, and ������Ƶ, $140,653, March 2014 - February 2016.
9. Using Flocculation to Reduce Turbidity of Construction Site Runoff. USDOT-Mountain Plains Consortium, and ������Ƶ, $53,154, October 2013 - November 2015.
10. Factors Affecting the Formation of Total Organic Halogen During Drinking Water Chlorination. ������Ƶ Scholarly Excellence Fund, $6,000, October 2012 - August 2013.

Publications

1. Sellner, B.M., Hua, G., Ahiablame, L.M. (2019) “Fixed bed column evaluation of phosphate adsorption and recovery from aqueous solutions using recycled steel byproducts.” Journal of Environmental Management 233, 595-602.
2. Sellner, B.M., Hua, G., Ahiablame, L.M., Trooien, T.P., Hay, C.H., Kjaersgaard, J. (2019) “Evaluation of industrial byproducts and natural minerals for phosphate adsorption from subsurface drainage.” Environmental Technology 40, 756-767.
3. Abusallout, I., Rahman, S., Hua, G. (2017) "Effect of temperature and pH on dehalogenation of total organic chlorine, bromine and iodine in drinking water." Chemosphere 187, 11-18.
4. Abusallout, I., Hua, G. (2017) "Characterization of dissolved organic carbon leached from a woodchip bioreactor." Chemosphere 183, 36-43.
5. Hua, G., Salo, M.W., Schmit, C.G., Hay, C.H. (2016) “Nitrate and phosphate removal from agricultural subsurface drainage using laboratory woodchip bioreactors and recycled steel byproduct filters.” Water Research 102, 180-189.
6. Abusallout, I., Hua, G. (2016) "Photolytic dehalogenation of disinfection byproducts in water by natural sunlight irradiation." Chemosphere 159, 184-192.
7. Abusallout, I., Hua, G. (2016) "Natural solar photolysis of total organic chlorine, bromine and iodine in water." Water Research 92, 69-77.
8. Hua, G., Reckhow, D.A., Abusallout, I. (2015) “Correlation between SUVA and DBP formation during chlorination and chloramination of NOM fractions from different sources.” Chemosphere 130, 82-89.
9. Hua, G., Kim, J., Reckhow, D.A. (2014) “Disinfection byproduct formation from lignin precursors.” Water Research 63, 285-295.
10. Hua, G., Reckhow, D.A. (2013) “Effect of pre-ozonation on the formation and speciation of DBPs.” Water Research 47 (13), 4322-4330.
11. Hua, G., Reckhow, D.A. (2012) “Evaluation of bromine substitution factors of DBPs during chlorination and chloramination.” Water Research 46 (13), 4208-4216.
12. Hua, G., Reckhow, D.A. (2012) “Effect of alkaline pH on the stability of halogenated DBPs.” Journal American Water Works Association 104 (2), E107-E120.
13. Hua, G., Reckhow, D.A. (2008) “DBP formation during chlorination and chloramination: Effect of reaction time, pH, dosage, and temperature.” Journal American Water Works Association 100 (8), 82-95.
14. Hua, G., Reckhow, D.A. (2008) “Hydrophobicity and molecular size distribution of unknown TOX in drinking water.” Journal of Environmental Engineering 134, 152-160.
15. Hua, G., Reckhow, D.A. (2007) “Characterization of disinfection byproduct precursors based on hydrophobicity and molecular size.” Environmental Science and Technology 41 (9), 3309-3315. 
16. Hua, G., Reckhow, D.A. (2007) “Comparison of disinfection byproduct formation from chlorine and alternative disinfectants.” Water Research 41, 1667-1678.
17. Hua, G., Reckhow, D.A. (2006) “Determination of TOCl, TOBr and TOI in drinking water by pyrolysis and off-line ion chromatography.” Analytical and Bioanalytical Chemistry 384, 495-504.
18. Hua, G., Reckhow, D.A., Kim, J. (2006) “Effect of bromide and iodide ions on the formation and speciation of disinfection byproducts during chlorination.” Environmental Science and Technology 40, 3050-3056.