Prof. Orathai Chavalparit, Ph.D. 

Dutta, A., Chavalparit, O. Unmasking the veil of PM2. 5 pollution: A comprehensive analysis of health effects, economic losses, and environmental implications in North Indian States 2025, Ecotoxicology and Environmental Safety 292

Samitthiwetcharong, Sutisa., Chavalparit, Orathai., Suwanteep, Kultip., Murayama, Takehiko., Kullavanijaya, Pratin. Enhancing circular plastic waste management: Reducing GHG emissions and increasing economic value in Rayong province, Thailand 2024, Heliyon 10

Dutta, Abhishek., Chandra, Utpal., Chavalparit, Orathai., Dutta, Gautam., Limphitakphong, Nantamol., Gupta, Manoj., Nanthaamornphong, Aziz. Optimizing prevention strategies for PM2. 5-related health risks in Nakhon Ratchasima 2024, Environmental and Sustainability Indicators 21

Niyommaneerat, W., Suwanteep, K., Chavalparit, O. Sustainability indicators to achieve a circular economy: A case study of renewable energy and plastic waste recycling corporate social responsibility (CSR) projects in Thailand 2023, Journal of Cleaner Production 391

Samitthiwetcharong, S., Kullavanijaya, P., Suwanteep, K., Chavalparit, O. Towards sustainability through the circular economy of plastic packaging waste management in Rayong Province, Thailand 2023, Journal of Material Cycles and Waste Management 25 (4)

Dutta, A., Chavalparit, O. Assessment of health burden due to the emissions of fine particulate matter from motor vehicles: A case of Nakhon Ratchasima province, Thailand 2023, Science of The Total Environment 872

Phupadtong, A., Chavalparit, O., Suwanteep, K., Murayama, T. Municipal emission pathways and economic performance toward net-zero emissions: A case study of Nakhon Ratchasima municipality, Thailand 2023, Journal of Environmental Management 347

Boonwirut, S., CHAVALPARIT, O. Assessment of greenhouse gas reduction from plastic waste management, Case study: Rayong city Municipality 2023, Chulalongkorn University

Wichaiutcha, N., Dutta, A., Chavalparit, O. Life Cycle Assessment of Plastic Resin: A Case Study of the Petrochemical Industry in Thailand for the Production of HDPE Resin 2023, Applied Environmental Research 45 (1)

Usapein, Parnuwat., Tuntiwiwattanapun, Nattapong., Polburee, Pirapan., Veerakul, Prakan., Seekao, Chaiyaporn., Chavalparit, Orathai. Transition Pathway Palm Oil Research Framework toward a Bio-circular-green Economy Model using SWOT analysis: a case study of Thailand 2022, Frontiers in Environmental Science 10

Kullavanijaya, P., Chavalparit, O. Biomethanation of napier grass mono-digestion in single-stage anaerobic completely stirred tank reactors seeded with cow manure and anaerobic sludge 2022, BioEnergy Research 15 (1)

Hirunsupachote, S., Kullavanijaya, P., Chavalparit, O. Biomethanation potential and enhancement of Acacia leaves waste via pretreatment and Co-digestion strategy 2022, Journal of Ecological Engineering 23 (5)

หนึ่งฤทัยสายรัตน์, ทัศนาวลัยอุฑาร สกุล, รณบรรจบอภิรติกุล การประเมินการปล่อยก๊าซเรือนกระจกจากการดำเนินงานของบริษัทวอเตอร์อินเด็กซ์แอนด์คอนซัล แทนท์จำกัด 2022, Proceeding National & International Conference 15 (2)

Sillberg, CV., Kullavanijaya, P., Chavalparit, O. Water quality classification by integration of attribute-realization and support vector machine for the Chao Phraya River 2021, Journal of Ecological Engineering 22 (9)

Phapant, P., Dutta, A., Chavalparit, O. COVID-19 experience transforming the protective environment of office buildings and spaces 2021, Sustainability 13 (24)

Ma, JJ., Fujino, T., Lim, Y., Niyommaneerat, W., Chavalparit, O. Earth & Environmental Sciences 2021,

Ongwandee, Maneerat., Namepol, Kan., Yongprapat, Kamolchai., Homwuttiwong, Sahalaph., Pattiya, Adisak., Morris, John., Chavalparit, Orathai. Coal bottom ash use in traditional ceramic production: evaluation of engineering properties and indoor air pollution removal ability 2020, Journal of Material Cycles and Waste Management 22

Kullavanijaya, P., Chavalparit, O. The effect of ensiling and alkaline pretreatment on anaerobic acidification of Napier grass in the leached bed process 2020, Environmental Engineering Research 25 (5)

Limphitakphong, Nantamol., Thaipradit, Pipat., Kanchanapiya, Premrudee., Tantisattayakul, Thanapol., Chavalparit, Orathai. Embodied carbon emissions of construction materials: a case study of buildings in thailand 2020, GEOMATE Journal 18

Srivichai, P., Chavalparit, O. Co-digestion of modified tapioca starch sludge and shrimp pond sediment as a method to improve system stability and biogas production 2020, ScienceAsia 46 (2)

Srivichai, P., Chavalparit, O. OPTIMIZATION OF BIOGAS PRODUCTION FROM CO-DIGESTION OF WASTE ACTIVATED SLUDGE AND MODIFIED TAPIOCA STARCH SLUDGE 2020, GEOMATE Journal 18 (67)

Ittiprasert, K., Chavalparit, O. Sustainable waste utilization for the petrochemical industry in Thailand under circular economy principle: a case study. 2020,

Inpranetr, T., CHAVALPARIT, O. SUSTAINABLE MANAGEMENT OF SOLID WASTE FROM COFFEE SHOP 2020, Chulalongkorn University

N Wichai-Utcha, Chavalparit, O. 3Rs Policy and plastic waste management in Thailand 2019, Journal of Material Cycles and Waste Management 21

Kullavanijaya, Pratin., Chavalparit, Orathai. The production of volatile fatty acids from Napier grass via an anaerobic leach bed process: The influence of leachate dilution, inoculum, recirculation, and buffering agent addition 2019, Journal of Environmental Chemical Engineering 7

Samitthiwetcharong, S., Chavalparit, O. Enhancement of methane production from alkaline pretreated poly (lactic acid) waste by the co-digestion process 2019, Geomate Journal 16 (56)

Hirunsupachote, S., Chavalparit, O. Predicting the biomethanation potential of some lignocellulosic feedstocks using linear regression models: the effect of pretreatment 2019, KSCE Journal of Civil Engineering 23 (4)

Limphitakphong, N., Chaikatetham, N., Khaimook, T., Chavalparit, O. Performance of air conditioning system in educational building for energy conservation 2019, GEOMATE Journal 16 (56)

Chanpla, M., Kullavanijaya, P., Janejadkarn, A., Chavalparit, O. Effect of harvesting age and performance evaluation on biogasification from Napier grass in separated stages process 2018, KSCE Journal of Civil Engineering 22

Chavalparit, O., Sasananan, S., Kullavanijaya, P., Charoenwuttichai, C. Anaerobic co-digestion of hydrolysate from alkali pre-treated oil palm empty fruit bunches with biodiesel waste glycerol 2018, Journal of Material Cycles and Waste Management 20

Monjaiang, Paron., Limphitakphong, Nantamol., Kanchanapiya, Premrudee., Tantisattayakul, Thanapol., Chavalparit, Orathai. Assessing potential of rainwater harvesting: case study building in Bangkok 2018, Int. J. Environ. Sci. Dev 9

Niyommaneerat, W., Boonpramote, T., Chavalparit, O. External auditing of corporate social responsibility projects: Case study of CSR projects for energy company in Thailand 2018, Advances in Cleaner Production. 7th International Workshop

Promuppatum, Napatsawan., Kongpann, Apichart., Boonpramote, Thitisak., Wangnai, Chinnapong., Chavalparit, Orathai. Evaluation of CSR Project from the Economic, Environmental and Social Performances Monitoring by Using the Case Study of Renewable Energy for a Community Project in Thailand 2018,

Thaipradit, Pipat., Limphitakphong, Nantamol., Kanchanapiya, Premrudee., Tantisattayakul, Thanapol., Chavalparit, Orathai. The influence of building envelop materials on its life cycle performance: a case study of educational building in Thailand 2018, Key Engineering Materials 780

Phupadtong, Athitinon., Limphitakphong, Nantamol., Kanchanapiya, Premrudee., Tantisattayakul, Thanapol., Chavalparit, Orathai. The assessment of the environmental and economic performances for improving existing educational building: a case study of Bangkok, Thailand 2018, International Journal of Sustainable Energy Development

Putthakasem, N., Limphitakphong, N., Chavalparit, O. Scenarios of municipal solid waste management for mitigating greenhouse gas emission: a case study of supermarket in Bangkok, Thailand 2018, Proceedings of the 7th International Conference on Informatics

Treenate, P., Limphitakphong, N., Chavalparit, O. A complete life cycle assessment of high density polyethylene plastic bottle 2017, IOP Conference series: materials science and engineering 222 (1)

Usapein, P., Chavalparit, O. Life cycle assessment of producing electricity in Thailand: a case study of natural gas power plant 2017, MATEC Web of Conferences 103

Usapein, P., Chavalparit, O. Life cycle assessment of bio-sludge for disposal with different alternative waste management scenarios: a case study of an olefin factory in Thailand 2017, Journal of Material Cycles and Waste Management 19

Usapein, P., Chavalparit, O. A start-up MRV system for an emission trading scheme in Thailand: A case study in the petrochemical industry 2017, Journal of Cleaner Production 142

Samitthiwetcharong, S., Kullavanijaya, P., Chavalparit, O. Anaerobic biodegradation of polylactic acid under mesophilic condition using thermal-alkaline pretreatment 2017, IOP Conference Series: Materials Science and Engineering 222 (1)

Bangprasit, P., Chavalparit, O., Usapein, P. Life cycle assessment of Napier Pakchong 1 grass as a feedstock for anaerobic digestion to produce electricity: A case study in Thailand 2017, 2017 International Conference on Green Energy and Applications (ICGEA)

Homchuen, K., Anuwattana, R., Limphitakphong, N., Chavalparit, O. Toward Zero Waste to landfill: an effective method for recycling zeolite waste from refinery industry 2017, IOP Conference Series: Materials Science and Engineering 222 (1)

Ruangrit, C., Usapein, P., Limphitakphong, N., Chavalparit, O. Evaluation of the environmental impact of portion bag for food packaging: a case study of Thailand 2017, IOP Conference series: earth and environmental science 67 (1)

Suwanpahu, G., Tantisattayakul, T., Limphitakphong, N., Chavalparit, O. Greenhouse gases reduction assessment from energy efficiency improvement: Case study of power generation and distribution 2017, Materials Science Forum 886

Niyomthongchai, D., Limphitakphong, N., Chavalparit, O. Reusing Rockwool Insulation Waste as Plant Substrate: A Case Study of Flase Heather (Cuphea hyssopifoliaHumb.) 2017, Materials Science Forum 886

Abubakar, MK., Ademoh, OA. Comparative Plankton Survey and Physico-Chemical Assessment of Two Ponds in Kano Metropolis, Nigeria 2017, Eurasian Journal of Analytical Chemistry 13 (3)

Kittipongvises, S., Chavalparit, O., Sutthirat, C. Greenhouse gases and energy intensity of granite rock mining operations in Thailand: A case of industrial rock-construction 2016, Rigas Tehniskas Universitates Zinatniskie Raksti 18

Tantisattayakul, Thanapol., Soontharothai, Jindarporn., Limphitakphong, Nantamol., Pharino, Chanathip., Chavalparit, Orathai., Kanchanapiya, Premrudee. Assessment of energy efficiency measures in the petrochemical industry in Thailand 2016, Journal of Cleaner Production 137

Chaiyapong, P., Chavalparit, O. Enhancement of biogas production potential from Acacia leaf waste using alkaline pre-treatment and co-digestion 2016, Journal of Material Cycles and Waste Management 18

Tantisattayakul, T., Pharino, C., Chavalparit, O., Kanchanapiya, P. Energy, environmental, and economic analysis of energy conservation measures in Thailand’s upstream petrochemical industry 2016, Energy for Sustainable Development 34

Chuapet, Wasamon., Limphitakphong, Nantamol., Tantisattayakul, Thanapol., Kanchanapiya, Premrudee., Chavalparit, Orathai. A study of energy intensity and carbon intensity from olefin plants in thailand 2016, MATEC Web of Conferences 68

Bunyamanid, Y., Limphitakphong, N., Chavalparit, O., Tantisattayakul, T. An Analysis of Energy and Carbon Intensities and Exergy Efficiency in Natural Gas Combined-Cycle Power Plants: A Case Study of Thailand 2016, MATEC Web of Conferences 68

Usapein, P., Chavalparit, O. Evaluating the performance of 3R options to reduce landfill wastes using the 3R indicator (3RI): case study of polyethylene factories in Thailand 2015, Journal of Material Cycles and Waste Management 17

Arthasarnprasit, S., Chavalparit, O. Response surface optimization of electro-oxidation removal of disperse red 163 and reactive red 196 synthetic wastewater 2015, 3rd international conference on biological

Dulyapach, K. Optimization of Alkaline Thermo-chemical Pretreatment for Enhancing Biogas Production of Acacia Leaves by Response Surface Methodology 2015, 3RINCs 2015

Chaiyapong, P. Enhancement of Biogas Production from Acacia Hybrid Leave using Alkaline Pretreatment 2015, 3RINCs 2015

Bangprasit, P., Chavalparit, O. Life Cycle Assessment of Bioenergy System from Energy Crop in Thailand: Case study of Napier Pakchong 1 grass 2015, 3RINCs 2015

Usapein, P., Chavalparit, O. Options for sustainable industrial waste management toward zero landfill waste in a high-density polyethylene (HDPE) factory in Thailand 2014, Journal of material cycles and waste management 16

Janejadkarn, Apiwaj., Chavalparit, Orathai. Biogas Production from Napier Grass (Pak Chong 1)(Pennisetum purpureum× Pennisetum americanum) 2014, Advanced Materials Research 856

Usapein, P., Chavalparit, O. Development of sustainable waste management toward zero landfill waste for the petrochemical industry in Thailand using a comprehensive 3R methodology: A case study 2014, Waste management & research 32 (6)

Kanchanapiya, P., Limphitakphong, N., Pharino, C., Chavalparit, O. Evaluation of greenhouse gas emissions and reduction from the petrochemical industry in Thailand 2014, Greenhouse Gas Measurement and Management 4 (2-4)

Wongsirathat, C., Chavalparit, O. Utilization of sulfur waste from petroleum refinery for sulfur concrete 2014, Advanced Materials Research 856

Srisang, N., Chavalparit, O. Enhancing biogas production from sugarcane bagasse using steam explosion in according with acetic acid pretreatment 2014, Advanced Materials Research 856

Buasomboon, T., Chavalparit, O. Utilization of Cellular Glass Insulation Waste in Construction Materials 2014, Applied Environmental Research 36 (2)

Chavalparit, O., Ongwandee, M., Trangkaprasith, K. Production of pelletized fuel from biodiesel-production wastes: oil palm fronds and crude glycerin 2013, Engineering Journal 17 (4)

Janangkakan, B., Chavalparit, O., Kanchanapiya, P. Carbon footprint of an academic organization: A case study of the department of environmental of environmental engineering, Chulalongkorn University 2012, Applied Environmental Research 34 (1)

Laobussararak, B., Chulalaksananukul, W., Chavalparit, O. Comparison of bacterial and yeast ethanol fermentation yield from rice straw 2012, Advanced Materials Research 347

Sukchum, P., Chulalaksananukul, W., Chavalparit, O. Effect of thermo-chemical pretreatment on bioethanol production from corncobs 2012, Advanced Materials Research 347

Phukingngam, D., Chavalparit, O., Somchai, D., Ongwandee, M. Anaerobic baffled reactor treatment of biodiesel-processing wastewater with high strength of methanol and glycerol: reactor performance and biogas production 2011, Chemical papers 65 (5)

Tumsri, K., Chavalparit, O. Optimizing electrocoagulation-electroflotation process for algae removal 2011, 2nd International Conference on Environmenta l Science and Technology IPCBEE 6

Ongwandee, M., Chavalparit, O. Commuter exposure to BTEX in public transportation modes in Bangkok, Thailand 2010, Journal of Environmental Sciences 22 (3)

Chaiyaomporn, K., Chavalparit, O. Fuel pellets production from biodiesel waste 2010, Environ Asia 3 (1)

Trangkaprasith, K., Chavalparit, O. Heating value enhancement of fuel pellets from frond of oil palm 2010, Proceedings of International Conference on Biology

Raghareutai, T., Chavalparit, O., Ongwandee, M. Development of environmental sustainability for the biodiesel industry in Thailand 2010, International Journal of Sustainable Development & World Ecology 17 (5)

Jaitalee, L., Dararat, S., Chavalparit, O. Bio-hydrogen production potential from market waste 2010, Environment Asia 3 (2)

Chavalparit, O., Ongwandee, M. Optimizing electrocoagulation process for the treatment of biodiesel wastewater using response surface methodology 2009, Journal of Environmental Sciences 21 (11)

Chavalparit, O., Ongwandee, M. Clean technology for the tapioca starch industry in Thailand 2009, Journal of Cleaner Production 17 (2)

Srirangsan, A., Ongwandee, M., Chavalparit, O. Treatment of biodiesel wastewater by electrocoagulation process 2009, Environment Asia 2 (2)

Chavalparit, O., Raghareutai, T. Option for environmental sustainability of the biodiesel industry in Thailand 2009, Joint Actions on Climate Change

Chavalparit, O., Ongwandee, M., Thaweesuwanporn, P. Removal of heavy metals from COD analysis wastewater with an organic precipitant 2008, Science Asia 34

CHAVALPARIT, O., Rulkens, WH., Mol, APJ., Khaodhair, S. Options for environmental sustainability of the crude palm oil industry in Thailand through enhancement of industrial ecosystems 2006, Environment

Chavalparit, O. Clean technology for the crude palm oil industry in Thailand 2006, PQDT-Global

Chavalparit, O. Clean Technology for the Crude Palm Oil Industry in Thailand, PhD ThesisWageningen University 2006, ISBN 90-‐8504-‐446-‐4

Chavalparit, O., Mol, APJ., Rulkens, WH. A Comparison of the Palm Oil Industry in Thailand and Malaysia. 2006, International INREF-AGITS Conference

Chavalparit, O. Optimization of Clean Technology Practices for the Thai Crude Palm Oil Industry 2004, Chulalongkorn University

Chavalparit, O. Industrial ecosystems in the crude palm oil industry in Thailand 2003, Environmental Governance in Asia: New State-Society Relations

Panswad, T., Chavalparit, O., Chandung, C., Anotai, J. Economic considerations of chromium recovery from tanning wastewater 2001, Waste management & research 19 (5)

Panswad, T., Chavalparit, O. Water quality and occurrences of protozoa and metazoa in two constructed wetlands treating different wastewaters in Thailand 1997, Water Science and Technology 36 (12)

Chavalparit, O., Panswad, T. Water Quality and Occurences of Protozoa and Metazoa in Two Constructed Wetlands Treating Different Wastewaters in Thailand 1997, 제 6 차 국제수질보전학회 아시아 태평양지역 학술회의 1

Panswad, T., Chavalparit, O. Preliminary observations on physical, chemical and zoological aspects in constructed wetlands in Thailand 1996,

Panswad, T., Chavalparit, O., Sucharittham, Y., Charoenwisedsin, S. A bench-scale study on chromium recovery from tanning wastewater 1995, Water Science and Technology 31 (9)

Jaitalee, L., Dararat, S., Chavalparit, O. 4 EnvironmentAsia ,

Usapein, P., Chavalparit, O. An Assessment of Environmental Impact of Gas Flaring in Thailand: A Case Studies of Petrochemical Industry ,

Chavalparit, O., Hirunsupachote, S., Kullavanijaya, P. Biomethanation Potential and Enhancement of Acacia Leaves Waste via Pretreatment and Co-Digestion Strategy , Journal of Ecological Engineering

Srirangsan, A., Ongwandee, M., Chavalparit, O. M EnvironmentAsia ,

สิริลักษณ์โรคารักษ์ ประสิทธิภาพเชิงนิเวศเศรษฐกิจของโรงไฟฟ้าพลังความร้อนร่วมก๊าซธรรมชาติ , จุฬาลงกรณ์ มหาวิทยาลัย

Buasomboon, T., Chavalparit, O. Applied Environmental Research ,

Usapein, P., Chavalparit, O. ACCMES 140 ,