Yan XY, Zhao SH, Hu JJ, Dang JT, Yao S, Cai JM, Sittijunda S, Wang W, Lee DJ, Yang PB. Absorbing oxygen carriers promotes phosphorus recovery from sludge via the microwave thermal conversion. Bioresource Technology. 2024. 401:130760.

Saffiee N, Zulhaziman M. S. M, Isahak N. W.R.W, Suja F, Ding G.T, Sittijunda S, Mohamed Abdul P. Novel Supported Ionic Liquid Adsorbents for Hydrogen Sulphide Removal from Biogas. Journal of Ecological Engineering. 2024. 25(4): 66–79.

Nualsri C, Abdul P.M, Imai T, Reungsang A, Sittijunda S. Two-stage and one-stage anaerobic digestion of vinasse and spent brewer yeast cells for biohydrogen and methane production. Molecular Biotechnology. https://doi.org/10.1007/s12033-023-01015-3

Sitthikitpanya N, Khamtib S, Sittijunda S, Imai T, Reungsang A. Valorization of sugarcane leaves and co-digestion with microalgal biomass to produce biofuels and value-added products under the circular economy and zero-waste concepts. Energy Conversion and Management. 2024. 299: 117854

Sukphun P, Wongarmat W, Imai T, Sittijunda S, Chaiprapat S, Reungsang A. Two-stage biohydrogen and methane production from sugarcane-based sugar and ethanol industrial wastes: A comprehensive review. Bioresource Technology. 2023. 386: 129519

Sukphun P, Ponuansri C, Wongarmat W, Sittijunda S, Promnuan K, Reungsang A. Advancing Energy Recovery from Sugarcane Leaf via Two-Stage Anaerobic Digestion for Hydrogen and Methane Production: Impacts on Greenhouse Gas Mitigation and Sustainable Energy Production. Energies 2023; 16(23):7861

Promnuan K, Sittijunda S, Reungsang A. Evaluation of commercial moving bed media and sugarcane bagasse as packing material in biotrickling filter for hydrogen sulfide removal. Bioresource Technology. 2023. 388:129788

Wongfaed N, O Thong S, Sittijunda S, Reungsang A. Taxonomic and enzymatic basis of the cellulolytic microbial consortium KKU MC1 and its application in enhancing biomethane production. Scientific Reports. 2023;13:2968.

Sittijunda S, Baka S, Jariyaboon R, Reungsang A, Imai T, Kongjan P. Integration of dark fermentation with microbial electrolysis cells for biohydrogen and methane production from distillery wastewater and glycerol waste co‐digestion. Fermentation. 2022; 8:537.

Miftah AK, Sittijunda S, Imai T, Salakkam A, Reungsang A. Biohydrogen and methane production from sugarcane leaves pretreated by deep eutectic solvents and enzymatic hydrolysis by cellulolytic consortia. Fermentation. 2022; 8: 396.

Arisht SN, Mahmod SS, Abdul PM, Lutfi AAI, Takriff MS, Lay CH, Silvamany H, Sittijunda S, Jahim JMd. Enhancing biohydrogen gas production in anaerobic system via comparative chemical pre-treatment on palm oil mill effluent (POME). Journal of Environmental Management. 2022; 321:115892.

Saripan K, Mamimin C, Imai T, Sittijunda S, Reungsang A. Quantitative-PCR methodology for monitoring the thermophilic hydrogen producers enriched from elephant dung. Fermentation. 2022; 9: 506.

Wongarmat W, Sittijunda S, Mamimin C, Reungsang A. Acidogenic phase anaerobic digestion of pretreated sugarcane filter cake for co-digestion with biogas effluent to enhance the methane production. Fuel. 2022; 310: 122466.

Sitthikitpanya N, Sittijunda S, Khamtib S, Reungsang A. Co-generation of biohydrogen and biochemicals from co-digestion of Chlorella sp. biomass hydrolysate with sugarcane leaf hydrolysate in an integrated circular biorefinery concept. Biotechnology for Biofuels. 2021; 14: 197.

Jomnonkhaow U, Sittijunda S, Reungsang A. Assessment of organosolv, hydrothermal, and combined organosolv and hydrothermal with enzymatic pretreatment to increase the production of biogas from Napier grass and Napier silage. Renewable Energy. 2021; (181):1237-1249.

Jomnonkhaow U, Sittijunda S. Reungsang A. Enhanced simultaneous saccharification and fermentation of Napier grass and Napier silage for two stage bio-hydrogen and methane production using organosolv and hydrothermal. Materials Chemistry and Physics. 2021;(267):124614.

Jomnonkhaow U, Sittijunda S. Reungsang A. 2021. Influences of size reduction, hydration, and thermal-assisted hydration pretreatment of increase the biogas production from Napier grass and Napier silage. Bioresource Technology. 2021; (331): 125034.

Wongarmat, W., Reungsang, A., Sittijunda, S. 2022. Chen-Yeon, Chu. Anaerobic co-digestion of biogas effluent and sugarcane filter cake for methane production. Biomass Conversion and Biorefinery.12:901-912.

Khamtib, S., Sittijunda, S., Imai, T., Reungsang, A. 2021. Co-digestion of oil palm trunk hydrolysate and slaughterhouse wastewater for biohydrogen production in a fix bed reactor by immobilized Thermoanaerobacterium thermosaccharolyticum KKU19 on expanded clay. Frontiers in Energy Research. 9;683989.

Sittijunda S., Sitthikitpanya N., Plangklang P., and Reungsang A. 2021. Two-stage anaerobic codigestion of crude glycerol and microalgal biomass for biohydrogen and methane production by anaerobic sludge consortium. Fermentation. 7, 175.7030175

Saripan, K., Reungsang, A., Sittijunda, S. 2021. Co-production of hydrogen and ethanol by Thermoanaerobacterium thermosaccharolytium KKU-ED1 from alpha-cellulose and cellulose fraction of sugarcane bagasse. Bioresource Technology Reports. 15; 100759.

Kongjan, P., Jariyaboon, R., Reungsang, A., Sittijunda, S. 2021. Co-fermentation of 1,3-propanediol and 2,3-butanediol from crude glycerol derived from the biodiesel production process by newly isolated Enterobacter sp.: Optimization factors affecting. Bioresource Technology Reports. 13; 100616.

Sittijunda S., Reungsang, A. 2020. Valorization of crude glycerol into hydrogen, 1,3-propanediol, and ethanol in an up-flow anaerobic sludge blanket (UABS) reactor under thermophilic conditions. Renewable Energy. 161.361-372.

Sittijunda S., Reungsang, A. 2020. Methane production from the co-digestion of algal biomass with crude glycerol by anaerobic mixed cultures. Waste and Biomass Valorization. 11.1873-1881.

Kongjan, P., Reungsang, A., Phasukaratchai, N., Sittijunda, S. 2019. Biogas production from single digestion of napier grass hydrolysate and co-digestion of solid fraction of microwave acid pretreated napier grass with swine manure. Chiang Mai Journal of Science. 46(4); 639-652.

Assawamongkholsiri, T., Reungsang, A., Sittijunda, S. 2019. Photo-hydrogen and lipid production from lactate, acetate, butyrate, and sugar manufacturing wastewater with an alternative nitrogen source by Rhodobacter sp. KKU-PS1. Peer J. 7:e6653 Sittijunda, S., Reungsang, A. 2019. Bioconversion of crude glycerol into 1,3- propanediol by an anaerobic mixed microbial consortium. Chiang Mai Journal of Science. 46:1-14.

Boonpiyo, S., Sittijunda, S., Reungsang, A. 2018. Co-Digestion of napier grass with food waste and napier silage with food waste for methane production. Energies. 11: 3200

Thungklin, P., Sittijunda, S., Reungsang, A. 2018. Sequential fermentation of hydrogen and methane from steam-exploded sugarcane bagasse hydrolysate. International Journal of Hydrogen Energy. 43. 9924-9934.

Assawamongkholsiri, T., Reungsang, A., Plangklang, P., Sittijunda, S. 2018. Repeated batch fermentation for photo-hydrogen and lipid production from wastewater of a sugar manufacturing plant. International Journal of Hydrogen Energy. 43(7): 3605-3617. Sittijunda, S., Reungsang, A. 2018. Biohydrogen production from crude glycerol using anaerobic mixed cultures: media optimization. Chiang Mai Journal of Science. 45. 653-667.

Prapinagsorn, W., Sittijunda, S., Reungsang, A. 2018. Co-digestion of napier grass and its silage with cow dung for biohydrogen and methane production by two-stage anaerobic digestion process. Energies. 11(1): 47; Doi:10.3390/en11010047.

Prapinagsorn, W., Sittijunda, S., Reungsang, A. (2017). Co-Digestion of Napier Grass and Its Silage with Cow Dung for Methane Production. Energies. 10, 1654; doi:10.3390/en10101654.

Sittijunda, S., Reungsang, A. (2017). Fermentation of hydrogen, 1,3-propanediol and ethanol from glycerol as affected by organic loading rate using up-flow anaerobic sludge blanket (UASB) reactor. International Journal of Hydrogen Energy. 42. 27558-27569.

Pattra, S., Sitijunda, S. (2017). Biohydrogen production from hydrolysate of water hyacinth stem (Eichhornia crassipes) using anaerobic mixed cultures. Sains Malaysiana. 46(1): 51–58.