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Faculty : School of Bio-Chemical Engineering and Technology (BCET)
Name : Dr. Rachnarin Nitisoravut (Associate Professor)
Position : Associate Professor
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Phone Rangsit : +66-2-986-9009, +66-2-986-9101, +66-2-564-3226
Phone Bangkadi :
Phone Extension : 2304
  • North Carolina State University, NC, USA
    Doctor of Philosophy in Civil Engineering/Environmental Engineering
  • University of Hawaii at Manoa, HI, USA
    Master of Science in Agriculture Engineering (Specialized in Biosystem engineering)
  • Asian Institute of Technology, Bangkok, Thailand
    Special Program in Environmental Engineering
  • Chulalongkorn University, Bangkok, Thailand
    Bachelor of Science in Chemical Engineering
  • Institute of Analytical Chemistry Training, Ministry of Science, Technology and Environment
    Diploma in Analytical Chemistry, Chulalongkorn University
Academic Awards
  • Finalist, Cameron Center Advisory Board Research Award, University of North Carolina at Charlotte (1996)
  • Member of Gamma Sigma Delta, the Honor Society of Agriculture (1991)
  • Second Honor, Institute of Analytical Chemistry Training, Department of Science Service, Ministry of Science, Technology and Energy, Thailand (1983)
Research Areas
    Environmental biotechnology/microbiology, Biological treatment of water and wastewater
Research Interests

    Biohydrogen Production

    Hydrogen is a promising alternative to fossil fuels. It is a clean, renewable, carbon-free energy carrier of the future. It has a heating value of approximately 2.5 times greater than that of methane and can be used in fuel cells with high efficiency. When combusted, it produces water rather than greenhouse gases. Hydrogen can be derived from various means, chemically or biologically, each with its own set of advantages and disadvantages. Biohydrogen production is an environmentally friendly method employing either natural or genetically-modified microbial communities to produce hydrogen. Prior to the establishment of full-scale biohydrogen production, substantial, fundamental research is needed to address the key capabilities of the system so that high hydrogen production rates and efficiency can be achieved.

    ANaerobic AMMonium OXidation (ANAMMOX)

    The ANaerobic AMMonium OXidation (ANAMMOX) process involves the use of nitrite as an electron acceptor in the bacterially mediated oxidation of ammonia to yield di-nitrogen gas. The process allows nitrogen transformation similar to the classical processes of nitrification followed by denitrification. However, it reduces oxygen demand and requires no additional organic carbon source as compared to typical nitrification and denitrification, respectively. It is a promising microbial process to remove ammonia from wastewater characterized by a low content of organic materials.

    Assimilable Organic Carbon (AOC) and Regrowth Potential in Drinking Water

    During the past decade, research interest in drinking water treatment has focused on the biodegradable fraction of organic carbon in natural and treated water. This interest stems from the recognition that biodegradable organic matter in water can provide growth support to microorganisms which can be intensified during storage, and travel within the distribution systems. Such phenomenon is known as biological regrowth, and the fraction of biodegradable organic carbon is commonly termed biodegradable dissolved organic carbon (BDOC) or assimilable organic carbon (AOC). Biological regrowth in distribution systems has been known for years, as a potential cause of corrosion in distribution lines and deterioration of finished water quality, as well as an indirect link to waterborne diseases. It has, however, just come under attention , particularly for developed countries, due to the unclear impact on human health.

Theses Supervised

Master Theses Supervised

2002: Nisa Kaewgamthong. Greenhouse Gases Emission from Salt-affected Constructed Wetland. Joint Graduate School of Energy and Environment.
2009: Porntip Wimonsong. Enrichment of Hydrogen Producing Bacteria from Conventional Seed Sludge: Pretreatment and Performance.

Doctoral Theses Supervised

2003: Pantip Klomjek. Assessment of Wetland Treatment Performance under High Salt Conditions. Joint Graduate School of Energy and Environment.
2006: Paweena Panichayapichet. Contamination, Fate and Transport of Lead in Khli Ti Watershed. Joint Graduate School of Energy and Environment.
2007: Nutchanat Chamchoi. Cultivation and Application of Anammox Organisms for High Nitrogen Wastewater Treatment.

Work Experiences
  • 1998-Present: SIIT.
  • 1997: Project Manager, Clean Technology Co., Ltd., Thailand.
  • 1993-1997: Teaching/Research Assistant, Department of Civil Engineering, University of North Carolina at Charlotte, NC, USA.
  • 1991-1992: Research Assistant & Associate, Department of Biosystem Engineering and The Water Resources Research Center, University of Hawaii at Manoa, HI, USA.
  • 1985-1990: Research Laboratory Supervisor/Research Assistant, Environmental Engineering Program, School of Environment, Resources and Development, Asian Institute of Technology (AIT), Thailand.
List of Publications
  1. Chooaksorn, W. and Nitisoravut, R., 2015. Heavy metal removal from aqueous solutions by chitosan coated ceramic membrane. International Proceedings of Chemical, Biological and Environmental Engineering: Proceedings of the 2015 4th International Conference on Informatics, Environment, Energy and Applications (IEEA 2015), March 28-29, 2015, Chonburi, Thailand, 82, 36-41.
  2. Wimonsong, P. and Nitisoravut, R., 2015. Comparison of different catalysts for fermentative hydrogen production. Journal of Clean Energy Technologies, 3(2), 128-131. Proceedings of the 2014 3rd International Conference on Clean and Green Energy (ICCGE 2014), February 19-21, 2014, Singapore.
  3. Thanh, C.N.D. and Nitisoravut, R., 2014. Earthen-membrane fuel cell (MFC) for septage treatment and power generation. Proceedings of the 9th GMSARN International Conference 2014 on Connectivity and Sustainability in GMS: Energy, Environmental and Social Issues [CD-ROM], November 12-14, 2014, Ho Chi Minh City, Vietnam, 6 p.
  4. Sarikkha, P., Boonyarattanakalin, S., and Nitisoravut, R., 2014. Use of wastewater as a substrate for sugary kefir growth and value added products formation. Proceedings of the 9th GMSARN International Conference 2014 on Connectivity and Sustainability in GMS: Energy, Environmental and Social Issues [CD-ROM], November 12-14, 2014, Ho Chi Minh City, Vietnam, 6 p.
  5. Wimonsong, P. and Nitisoravut, R., 2014. Biohydrogen enhancement using highly porous activated carbon. Energy & Fuels, 28(7), 4554-4559.
  6. Wimonsong, P., Nitisoravut, R., and Llorca, J., 2014. Application of Fe-Zn-Mg-Al-O hydrotalcites supported Au as active nano-catalyst for fermentative hydrogen production. Chemical Engineering Journal, 253, 148-154.
  7. Nitisoravut, R., Sangsnit, N., Dhiralaksh, J., and Nitivattananon, V., 2013. Low carbon hotels towards sustainable tourism in Koh Chang and neighbouring islands, Thailand. Proceedings of the 8th GMSARN International Conference 2013 on Green Growth in GMS: Energy, Environment and Social Issues [CD-ROM], 18-20 December 2013, Mandalay, Myanmar, 8 p.
  8. Wimonsong, P., Llorca, J., and Nitisoravut, R., 2013. Catalytic activity and characterization of Fe-Zn-Mg-Al hydrotalcites in biohydrogen production. International Journal of Hydrogen Energy, 38 (25), 10284-10292.
  9. Jariyatamkitti, S., Kitchalao, S., Wuttisan, P., Nitisoravut, R., Poljungreedand, I., and Boonyarattanakalin, S., 2013. Growths, antibacterial and antifungal activities of kefir grown in different culture media. Proceedings of Pure and Applied Chemistry International Conference 2013 (PACCON2013), January 23-25, 2013, Chon Buri, Thailand, pp. 359-362.
  10. Suzuki, T., Takahashi, Y., Nitisoravut, R., Babel, S., and Polprasert, C. 2012. The study of applying the hybrid MF membrane system for the treatment of high-color surface water in Thailand. Proceedings of the 9th International Symposium on Water Supply Technology in Yokohama 2012, November 20-22, 2012, Yokohama, Japan, 8 p.
  11. Wimonsong, P. and Nitisoravut, S., 2009. Pretreatment evaluation and its application on palm oil mill effluent for bio-hydrogen enhancement and methanogenic activity repression. Pakistan Journal of Biological Sciences, 12(16), 1127-1133.
  12. Wimonsong, P. and Nitisoravut, S., 2009. Bio-hydrogen production from palm oil mill effluent using heat-enriched anaerobic mixed microflora. Proceedings of the World Renewable Energy Congress 2009 – Asia: The 3rd International Conference on Sustainable Energy and Environment (SEE 2009), May 19-22, 2009, Bangkok, Thailand. Paper No. A3-007, pp. 387-392.
  13. Wimonsong, P. and Nitisoravut, S., 2009. Pretreatment evaluation for enriching hydrogen producing bacteria from anaerobic mixed culture. Proceedings of the 2nd Thammasat University International Conference on Chemical, Environmental and Energy Engineering (TU ChEEE 2009), March 3-4, 2009, Bangkok, Thailand. pp. 392-396.
  14. Panichayapichet, P., Nitisoravut, S., Simachaya, W., and Wangkiat, A., 2008. Source identification and speciation of metals in the topsoil of the Khli Ti watershed, Thailand. Water, Air, & Soil Pollution, 194(1-4), 259-273.
  15. Chamchoi, N., Nitisoravut, S., and Schmidt, J.E., 2008. Inactivation of ANAMMOX communities under concurrent operation of anaerobic ammonium oxidation (ANAMMOX) and denitrification. Bioresource Technology, 99 (9), 3331-3336.
  16. Chamchoi, N. and Nitisoravut, S., 2007. Anammox enrichment from different conventional sludges. Chemosphere, 66(11), 2225-2232.
  17. Panichayapichet, P., Nitisoravut, S., and Simachaya, W., 2007. Spatial distribution and transport of heavy metals in soil, ponded-surface water and grass in a pb-contaminated watershed as related to land-use practices. Environmental Monitoring and Assessment, 135(1-3), 181-193.
  18. Babel, S., Nitisoravut, S., Sharp, A. and Dacera, D., 2007. Low cost community based treatment unit for floating food vendors and slum community in Thailand. Paper presented at the 2nd International Forum on Water Environmental Governance in Asia, December 3-4, 2007, Beppu, Oita, Japan. pp. 92-97.
  19. Chamchoi, N., Nitisoravut, S., and Schmidt, J.E., 2007. Anammox acclimation in SBR and preliminary study of COD and sludge concentration affecting on the anammox reaction. Paper presented at the International Conference on Water Management and Technology Applications in Developing Countries, May 14-16, 2007, Kuala Lumpur, Malaysia.
  20. Panichayapichet, P., Nitisoravut, S. and Simachaya, W. 2006. Impacts of nonpoint source Pb loading and sediment resuspendsion on Pb concentrations in water of Khli Ti creek, Thailand. Paper presented at the International Conference on Environment 2006 (ICENV 2006), November 13-15, Penang, Malaysia.
  21. Chamchoi, N. and Nitisoravut, S. 2006. Anammox enrichment from different conventional sludges. Chemosphere. (DOI Information: 10.1016/j.chemosphere.2006.09.036)
  22. Panichayapichet, P., Nitisoravut, S. and Wangkiat, A. 2006. Evaluation of ability of rock check dam to prevent the transportation of Pb-contaminated sediment in Khli Ti Creek, Thailand. Chinese Journal of Geochemistry, Vol. 25 (suppl.), 119-120. (abstract) Presented in the 7th International symposium on environmental geochemistry, September 24-27, Beijing, China.
  23. Nitisoravut, S., Sharp, A., Babel, S., Yongcharoen, T., and Salanon, A. 2005. รายงานสถานการณ์น้ำคลอง รังสิต และการฟื้นฟูบำบัดเพื่อการพัฒนาคลองรังสิตที่ยั่งยืน, Printing House of Thammasat University, 34 p. (in Thai).
  24. Nitisoravut, S. and Klomjek, P. 2005. Inhibition kinetics of salt-affected wetland for municipal wastewater treatment. Water Research, 39, 4413-4419.
  25. Klomjek, P. and Nitisoravut, S. 2005. Constructed treatment wetland: A study of eight plant species. Chemosphere, 58, 585-593.
  26. Lekphet, S., Adsavakulchai, S., and Nitisoravut, S., 2005. Diurnal and seasonal variations of methane flux from Kung Kraben Mangrove, Chantaburi, Thailand. ASEAN Journal on Science & Technology for Development , 22 (1&2), 71-83.
  27. Lekphet, S., Nitisoravut, S., and Adsavakulchai, S. 2005. Estimating methane emissions from mangrove area in Ranong province, Thailand. Songklanakarin Journal of Science and Technology, 27(1), 153-163.
  28. Lekphet, S., Nitisoravut, S., and Chuersuwan, N. 2004. Estimating methane emissions from spatially separated mangrove areas in Thailand. Paper presented at
  29. Kaewgamthong, N. and Nitisoravut, S. 2003. Influence of salinity and loading rate on methane emission fluxes from constructed wetland. Journal of Environmental Research, 25(2), 25-33.
  30. Dacera, D., Jenvanitpanjakul, P., Nitisoravut, S., and Babel, S. 2003. Hexane Reduction in a Thai Rice bran Oil Factory: A cleaner Technology Approach. TIJSAT, 8(4), 6-17.
  31. Lekphet, S., Adsavakulchai, S., Towprayoon, S., Chidthaisong, and Nitisoravut, S. 2003. Methane emission from mangrove area in Thailand. Proceedings of the 2nd. Regional Conference on Energy Technology Towards a Clean Environment, February 12-14, Phuket, Thailand.
  32. Kaewgamthong, N. and Nitisoravut, S. 2002. Methane emission from treatment wetland. Realising Agenda 21: Proceedings International Conference on Environmental Management Ten Years After Rio, October 22-23, 2002. Bangi, Malaysia. 260-268.
  33. Klomjek, P. and Nitisoravut, S. 2002. Effect of salt concentrations on treatment performance of constructed wetland. Proceedings of the Regional Symposium on Environment and Natural Resources, April 10-11, 2002 Kuala Lumpur, Malaysia. Vol. 1:766-776.
  34. Wu, J. S. and Nitisoravut, S. 1999. Modeling of immobilized-cell bioreactor performance for AOC removal. Proceedings of Biofilm Systems, the 4th International Association of Water Quality (IAWQ), New York, USA., Oct. 17-20.
  35. Nitisoravut, S. (Contributing Author) 1998. Environmental Management Workbook Problems and Solutions. CRC Press, Inc., Boca Raton, FL.
  36. Nitisoravut, S., Jy S. Wu, Reasoner, D. J., and Chao, A. C. 1997. Columnar biological treatability of AOC under oligotrophic conditions. Journal of Environmental Engineering, 123(3), 290-296.
  37. Yang, P. Y., Nitisoravut, S., and Wu, J. S. 1995. Nitrate removal using a mixed-culture entrapped microbial cell immobilization process under high salt conditions. Water Research, 29(6), 1525-1532.
  38. Wu, J. S., Langley, W. G., Nitisoravut, S., and Yang, P. Y. 1994. Drinking Water Denitrification with Entrapped Microbial Technology. American Water Works Association Research Foundation, Denver, CO.
  39. Yang, P.Y.; Ma, T.; See, T.S.; Nitisoravut, N. 1994. Applying entrapped mixed microbial cell techniques for biological wastewater treatment. Water Science and Technology, 29(10-11), 487-495.
  40. Yang, P.Y., Nitisoravut, N. and See, T.S. 1993. Entrapment of mixed microbial cells for water and wastewater treatment. Water Science and Technology, 28(7), 165-170.
  41. Wu, J. S., Nitisoravut, S., Langley, W. G., and Yu, S. F. 1993. Biodenitrification of brine waste from ion exchange processing. In A. Dyer, et al. (Eds.) Ion Exchange Processes: Advances and Application. The Royal Society of Chemistry, UK: Cambridge, 191-196.
  42. Nitisoravut, S. and Yang, P. Y. 1992. Denitrification of nitrate-rich water using entrapped-mixed- microbial cell immobilization technique. Water Science and Technology, 26(3-4), 923-931.
  43. Yang, P. Y., Nitisoravut, S., and Chen, H. 1992. Removal of nitrate and pesticide from contaminated groundwater using entrapped microbial cell process. Paper Presented at the Conference on the Control of Hazardous Materials, February 4-6, San Francisco, CA.
  44. Verink, J., Nitisoravut, S., Joshi, D. L., and Asawangkul, M. 1991. Pilot-scale research for distillery wastewater treatment. Paper presented at the Seminar on Biotechnology for Agro-Industrial Waste Management, February 5-6, Bangkok, Thailand.
  45. Verink, J., Nitisoravut, S., and Asawangkul, M. 1989. Biogas production from distillery slop using pilot scale wastewater treatment plant. Paper presented at the Symposium on Environmental Perspectives Towards the Year 2000 and Beyond, Asian Institute of Technology, November 6-10, Bangkok, Thailand.
  46. Muttamara, S., Vigneswaran, S., Boonthanon, S., and Nitisoravut, S. 1988. Physico-chemical processes for wastewater treatment. Paper presented at the Seminar on Wastewater, Organized by Engineering Institute of Thailand and Ministry of Industry, May 16-18, Bangkok, Thailand.
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