Dr. Santhana Krishnan
@eng.psu.ac.th
Postdoctoral Associate
Prince of Songkla University
Dr. Santhana Krishnan is a full-time post-doctoral researcher in environmental engineering at the Department of Civil and Environmental Engineering, Faculty of Engineering, Prince of Songkla University, Hatyai, Thailand. He obtained his PhD degree in chemical engineering in 2017 at the University of Malaysia, Pahang, Malaysia. Dr. Santhana has a cumulative experience of 5 years in postdoctoral research and an additional 5 years in the industrial sector. His main areas of research are bioenergy/environmental, fermentation, wastewater engineering, microbial bioprocessing, bioreactors for energy and water applications, and resource recovery.
EDUCATION
Doctor of Philosophy (Chemical Engineering)
RESEARCH, TEACHING, or OTHER INTERESTS
Environmental Engineering, Biotechnology, Chemical Engineering, Renewable Energy, Sustainability and the Environment
FUTURE PROJECTS
Bioconversion of carbon dioxide and H2 to methane using hydrogenotrophic methanogens
The biological conversion of CO2 and hydrogen to methane is well-known reaction without the demand for high pressure and temperature and is carried out by hydrogenotrophic methanogens. Reducing equivalents to the biotransformation of carbon dioxide from biogas or other resources to biomethane can be supplied by external hydrogen. Discontinuous electricity production from wind and solar energy combined with fluctuating utilization causes serious storage problems that can be solved by a power-to-gas strategy representing the production of storable hydrogen via the electrolysis of water. The possibility of subsequent repowering of the energy of hydrogen to an easily utilizable and transportable form is a biological conversion with CO2 to biomethane.
Applications Invited
Post doc oppurtunity
91
Scopus Publications
3988
Scholar Citations
34
Scholar h-index
59
Scholar i10-index
Scopus Publications
- An extensive analysis and environmental sustainability applications of multifunctional biochar developments: Current trends and technological advances
Farah Amalina, Santhana Krishnan, A.W. Zularisam, and Mohd Nasrullah
Elsevier BV - Improving biogas production with application of trimetallic nanoparticle using response surface methods
Pramod Jadhav, Santhana Krishnan, Reshma Patil, Prakash Bhuyar, A.W. Zularisam, Vigneswaran Narayanamurthy, and Mohd Nasrullah
Elsevier BV - Elucidating the role of sub-thermophilic temperature and pre-hydrolyzation for effective upgrading scheme of old swine manure digesters
Worakan Chetawan, Santhana Krishnan, Kanyarat Saritpongteeraka, Arkom Palamanit, David Gabriel, and Sumate Chaiprapat
Elsevier BV - A comprehensive review of AI-enhanced smart grid integration for hydrogen energy: Advances, challenges, and future prospects
Morteza SaberiKamarposhti, Hesam Kamyab, Santhana Krishnan, Mohammad Yusuf, Shahabaldin Rezania, Shreeshivadasan Chelliapan, and Masoud Khorami
Elsevier BV - Pristine and modified biochar applications as multifunctional component towards sustainable future: Recent advances and new insights
Farah Amalina, Santhana Krishnan, A.W. Zularisam, and Mohd Nasrullah
Elsevier BV - Mono- and Co- solvency based transesterification of Caryota urens seed oil
Gokul Raghavendra Srinivasan, Krishna Kumar Yadav, Arif Senol Sener, Zaher Mundher Yaseen, Mudassir Hasan, Fredrick Orori Kengara, Balasubramani Ravindran, Santhana Krishnan, Shiv Prasad, Maha Awjan Alreshidi,et al.
Elsevier BV - Application of iron-cobalt-copper (Fe-Co–Cu) trimetallic nanoparticles on anaerobic digestion (AD) for biogas production
Pramod Jadhav, Zaied Bin Khalid, Santhana Krishnan, Prakash Bhuyar, A. W. Zularisam, Abdul Syukor Abd Razak, and Mohd Nasrullah
Springer Science and Business Media LLC - Preface
- Possibilities of Sustainable Bioenergy Generation from Palm Oil Mill Effluent using Anaerobic Technology
Santhana Krishnan, Mohd Nasrullah, Zularisam Ab Wahid, Sumate Chaiprapat, Vasudeo Zambare, and Shreeshivadasan Chelliapan
Springer Nature Singapore - Saccharomyces cerevisiae: A Facultative Anaerobe for Ethanol Fermentation Using Organic Waste
Rasika Pawar, Athiya Kauser Awati, Vasudeo Zambare, Mohd Fadhil Md Din, Santhana Krishnan, and Shreeshivadasan Chelliapan
Springer Nature Singapore - Enhancement of Methane Production from Food Waste Using Multi-Objective Centralized Control Schemes
Sutha Subbian, Chitra Murugan, and Santhana Krishnan
Springer Nature Singapore - Impact of Anaerobic Bioreactors Configurations for Wastewater Treatment
Shreeshivadasan Chelliapan, Nur Fatihah Tajul Arifin, Santhana Krishnan, and Vasudeo Zambare
Springer Nature Singapore - REMOVAL OF VARIOUS METAL IONS IN WATER BY DIFFERENT PRE-TREATMENTS OF FLY ASH
Wen-Pei Low, Wong Wai Chun, Fung-Lung Chang, Hoong Pin Lee, Noorul Hudai Abdullah, Santhana Krishnan, and Kian-Ghee Tiew
Malaysian Institute of Planners
Rapid urbanisation in Malaysia has accelerated water pollution in rivers and other water sources, causing irreversible harm to the ecosystem. In view of that, this study aimed to work on using fly ash to address certain heavy metal components (chromium (Cr), copper (Cu), nickel (Ni), and zinc (Zn)) present in polluted water. The experiment employed three batches of fly ash. Two batches were treated with sodium hydroxide (NaOH-FA) and hydrochloric acid (HCl-FA), whereas one batch was left untreated (UFA). The three batches of adsorbents were examined by using a jar test after solutions containing 100 mg/L of Cr, Cu, Ni, and Zn ions were made. The results of various contact periods demonstrated that the fly ash had variable capacities for metal ion adsorption. The maximum adsorption of UFA was 79.958%(Cr), 80.814%(Cu), 81.580%(Ni), and 82.742%(Zn) while HCl-FA was adsorbing 77.148%(Cr), 82.546%(Cu), 78.896%(Ni), and 78.248%(Zn). NaOH-FA in this study was found to adsorb 80.828%(Cr), 79.230%(Cu), 81.692%(Ni), and 77.394%(Zn). Further to this, it was revealed that the Temkin Isotherm model was best fitted with the highest R² values (> 0.98). The negative value of the slope, B indicated that the adsorption is an endothermic process which leans towards physical adsorption. In conclusion, this study demonstrated the successful application of fly ash in water or wastewater treatment of metal ions. - Editorial: Bioprocess designing towards clean energy production from industrial wastewater
Santhana Krishnan, Mohd Nasrullah, Prabhu Saravanan, and Mohd Fadhil Bin Md Din
Frontiers Media SA - Characterisation of synthesised trimetallic nanoparticles and its influence on anaerobic digestion of palm oil mill effluent
Pramod Jadhav, Santhana Krishnan, Hesam Kamyab, Zaied bin Khalid, Prakash Bhuyar, A.W. Zularism, and Mohd Nasrullah
Elsevier BV - Comprehensive assessment of biochar integration in agricultural soil conditioning: Advantages, drawbacks, and future prospects
Farah Amalina, Abdul Syukor Abd Razak, A.W. Zularisam, M.A.A. Aziz, Santhana Krishnan, and Mohd Nasrullah
Elsevier BV - Retracted: Effect of process parameters on bio-oil yield from lignocellulosic biomass through microwave-assisted pyrolysis technology for sustainable energy resources: Current status (Journal of Analytical and Applied Pyrolysis (2023) 171, (S016523702300102X), (10.1016/j.jaap.2023.105958))
Farah Amalina, Santhana Krishnan, A.W. Zularisam, and Mohd Nasrullah
Elsevier BV - Photocatalytic degradation of methylene blue dye and fungi Fusarium equiseti using titanium dioxide recovered from drinking water treatment sludge
Santhana Krishnan, Nor Syahidah Zulkapli, Mohd Fadhil Bin Md Din, Zaiton Abd Majid, Mohd Nasrullah, and Fadzlin Md Sairan
Springer Science and Business Media LLC - Integrated poultry waste management by co-digestion with perennial grass: Effects of mixing ratio, pretreatments, reaction temperature, and effluent recycle on biomethanation yield
Chettaphong Phuttaro, Santhana Krishnan, Kanyarat Saritpongteeraka, Boonya Charnnok, Ludo Diels, and Sumate Chaiprapat
Elsevier BV - Recent advances in process improvement of dark fermentative hydrogen production through metabolic engineering strategies
Santhana Krishnan, Hesam Kamyab, Mohd Nasrullah, Zularisam Abdul Wahid, Krishna Kumar Yadav, Alissara Reungsang, and Sumate Chaiprapat
Elsevier BV - Performance and microbial analysis of a fluidized bed membrane bioreactor operated in the partial nitrification and anammox (PN/A) mode for polishing anaerobically treated effluent to industrial discharge standard
Araya Thongsai, Santhana Krishnan, Pongsak (Lek) Noophan, David Gabriel, Daniel González, and Sumate Chaiprapat
Elsevier BV - Recent advancement and applications of biochar technology as a multifunctional component towards sustainable environment
Farah Amalina, Santhana Krishnan, A.W. Zularisam, and Mohd Nasrullah
Elsevier BV - Effect of process parameters on bio-oil yield from lignocellulosic biomass through microwave-assisted pyrolysis technology for sustainable energy resources: Current status
Farah Amalina, Santhana Krishnan, A.W. Zularisam, and Mohd Nasrullah
Elsevier BV - Biochar and sustainable environmental development towards adsorptive removal of pollutants: Modern advancements and future insight
Farah Amalina, Santhana Krishnan, A.W. Zularisam, and Mohd Nasrullah
Elsevier BV - Using Machine Learning to Predict the Performance of a Cross-Flow Ultrafiltration Membrane in Xylose Reductase Separation
Reza Salehi, Santhana Krishnan, Mohd Nasrullah, and Sumate Chaiprapat
MDPI AG
This study provides a new perspective for xylose reductase enzyme separation from the reaction mixtures—obtained in the production of xylitol—by means of machine learning technique for large-scale production. Two types of machine learning models, including an adaptive neuro-fuzzy inference system based on grid partitioning of the input space and a boosted regression tree were developed, validated, and tested. The models’ inputs were cross-flow velocity, transmembrane pressure, and filtration time, whereas the membrane permeability (called membrane flux) and xylitol concentration were considered as the outputs. According to the results, the boosted regression tree model demonstrated the highest predictive performance in forecasting the membrane flux and the amount of xylitol produced with a coefficient of determination of 0.994 and 0.967, respectively, against 0.985 and 0.946 for the grid partitioning-based adaptive neuro-fuzzy inference system, 0.865 and 0.820 for the best nonlinear regression picked from among 143 different equations, and 0.815 and 0.752 for the linear regression. The boosted regression tree modeling approach demonstrated a superior capability of predictive accuracy of the critical separation performances in the enzymatic-based cross-flow ultrafiltration membrane for xylitol synthesis.
RECENT SCHOLAR PUBLICATIONS
- An extensive analysis and environmental sustainability applications of multifunctional biochar developments: Current trends and technological advances
F Amalina, S Krishnan, AW Zularisam, M Nasrullah
Green Technologies and Sustainability, 100174 2025 - Anaerobes and Waste Conversion Technologies
S Chelliapan, S Krishnan, V Zambare
Springer Nature 2024 - Impact of Anaerobic Bioreactors Configurations for Wastewater Treatment
S Chelliapan, NFT Arifin, S Krishnan, V Zambare
Anaerobes and Waste Conversion Technologies, 27-41 2024 - Enhancement of Methane Production from Food Waste Using Multi-Objective Centralized Control Schemes
S Subbian, C Murugan, S Krishnan
Anaerobes and Waste Conversion Technologies, 131-157 2024 - Saccharomyces cerevisiae: A Facultative Anaerobe for Ethanol Fermentation Using Organic Waste
R Pawar, AK Awati, V Zambare, MFM Din, S Krishnan, S Chelliapan
Anaerobes and Waste Conversion Technologies, 249-278 2024 - Possibilities of Sustainable Bioenergy Generation from Palm Oil Mill Effluent using Anaerobic Technology
S Krishnan, M Nasrullah, Z Ab Wahid, S Chaiprapat, V Zambare, ...
Anaerobes and Waste Conversion Technologies, 233-248 2024 - An overview of biomethanation and the use of membrane technologies as a candidate to overcome H2 mass transfer limitations
M Fachal-Surez, S Krishnan, S Chaiprapat, D Gonzlez, D Gabriel
Biotechnology Advances, 108465 2024 - Removal of Various Metal Ions in Water by Different Pre-Treatments of Fly Ash
WP Low, WW Chun, FL Chang, HP Lee, NH Abdullah, S Krishnan, ...
Planning Malaysia 22 2024 - Improving Biogas production with Application of Trimetallic Nanoparticle using Response Surface Methods
P Jadhav, S Krishnan, R Patil, P Bhuyar, AW Zularisam, ...
Renewable Energy 2024 - Elucidating the role of sub-thermophilic temperature and pre-hydrolyzation for effective upgrading scheme of old swine manure digesters
W Chetawan, S Krishnan, K Saritpongteeraka, A Palamanit, DG Bugua, ...
Bioresource technology, 131199 2024 - A comprehensive review of AI-enhanced smart grid integration for hydrogen energy: Advances, challenges, and future prospects
M SaberiKamarposhti, H Kamyab, S Krishnan, M Yusuf, S Rezania, ...
International Journal of Hydrogen Energy 67, 1009-1025 2024 - Bioprocess designing towards clean energy production from industrial wastewater
S Krishnan, M Nasrullah, P Saravanan, M Fadhil Bin Din
Frontiers in Chemical Engineering 6 2024 - OPEN ACCESS EDITED AND REVIEWED BY
JP Chen, S Krishnan, M Nasrullah, P Saravanan, MF Bin Din
Frontiers in Chemical Engineering, 4 2024 - Mono-and Co-solvency based transesterification of Caryota urens seed oil
GR Srinivasan, KK Yadav, AS Sener, ZM Yaseen, M Hasan, FO Kengara, ...
Industrial Crops and Products 209, 117965 2024 - Food Waste Using Multi-Objective
S Subbian, C Murugan, S Krishnan
Anaerobes and Waste Conversion Technologies 44, 131 2024 - Pristine and modified biochar applications as a multifunctional component toward a sustainable future: Recent advances and new insights
F Amalina, S Krishnan, AW Zularisam, M Nasrullah
Science of the Total Environment 2023 - Comprehensive assessment of biochar integration in agricultural soil conditioning: Advantages, drawbacks, and future prospectives
F Amalina, AS Abd Razak, AW Zularisam, MAA Aziz, S Krishnan, ...
Physics and Chemistry of the Earth, Parts A/B/C 2023 - Characterisation of synthesised trimetallic nanoparticles and its influence on anaerobic digestion of palm oil mill effluent
P Jadhav, S Krishnan, H Kamyab, ZB Khalid, P Bhuyar, AW Zularisam, ...
Chemosphere 2023 - Outline of Microbial Fuel Cells Technology and Their Significant Developments, Challenges, and Prospects of Oxygen Reduction Electrocatalysts
K Elangovan, P Saravanan, CH Cristian, F Sanhueza-Gmez, MMR Khan, ...
Frontiers in Chemical Engineering 2023 - Cellulose Nanocrystals from Agro Residues as Reinforcing Agent in Nanocomposites
S Krishnan, D Mazlan, MFMD Din, M Nasrullah, S Chaiprapat
Cellulose: Development, Processing, and Applications, 131 2023
MOST CITED SCHOLAR PUBLICATIONS
- A review on municipal solid waste as a renewable source for waste-to-energy project in India: Current practices, challenges, and future opportunities
LC Malav, KK Yadav, N Gupta, S Kumar, GK Sharma, S Krishnan, ...
Journal of Cleaner Production 277, 123227 2020
Citations: 372 - Outlook of fermentative hydrogen production techniques: An overview of dark, photo and integrated dark-photo fermentative approach to biomass
P Mishra, S Krishnan, S Rana, L Singh, M Sakinah, Z Ab Wahid
Energy Strategy Reviews 24, 27-37 2019
Citations: 324 - Biochar production techniques utilizing biomass waste-derived materials and environmental applications – A review
F Amalina, AR Syukor, S Krishnan, H Sulaiman, AW Zularisam, ...
Journal of Hazardous Materials Advances, 100134 2022
Citations: 248 - Current technologies for recovery of metals from industrial wastes: An overview
S Krishnan, NS Zulkapli, H Kamyab, SM Taib, MFBM Din, Z Abd Majid, ...
Environmental Technology & Innovation 22, 101525 2021
Citations: 226 - Evaluating heavy metals contamination in soil and vegetables in the region of North India: Levels, transfer and potential human health risk analysis
N Gupta, KK Yadav, V Kumar, S Krishnan, S Kumar, ZD Nejad, ...
Environmental Toxicology and Pharmacology 82, 103563 2021
Citations: 172 - A comprehensive assessment of the method for producing biochar, its characterization, stability, and potential applications in regenerative economic sustainability – A review
F Amalina, AS Abd Razak, S Krishnan, AW Zularisam, M Nasrullah
Cleaner Materials 3, 100045 2022
Citations: 148 - Advanced techniques in the production of biochar from lignocellulosic biomass and environmental applications
F Amalina, AR Abdul Syukor, S Krishnan, H Sulaiman, AW Zularisam, ...
Cleaner Materials 2022
Citations: 123 - Process enhancement of hydrogen and methane production from palm oil mill effluent using two-stage thermophilic and mesophilic fermentation
S Krishnan, L Singh, M Sakinah, S Thakur, ZA Wahid, M Alkasrawi
International Journal of Hydrogen Energy 41 (30), 12888-12898 2016
Citations: 122 - Treatment of palm oil mill effluent by electrocoagulation with presence of hydrogen peroxide as oxidizing agent and polialuminum chloride as coagulant-aid
M Nasrullah, L Singh, Z Mohamad, S Norsita, S Krishnan, N Wahida, ...
Water Resources and Industry 17, 7-10 2017
Citations: 101 - High performance electrocoagulation process in treating palm oil mill effluent using high current intensity application
M Nasrullah, AW Zularisam, S Krishnan, M Sakinah, L Singh, YW Fen
Chinese journal of chemical engineering 27 (1), 208-217 2019
Citations: 96 - Accelerated two-stage bioprocess for hydrogen and methane production from palm oil mill effluent using continuous stirred tank reactor and microbial electrolysis cell
S Krishnan, MFM Din, SM Taib, M Nasrullah, M Sakinah, ZA Wahid, ...
Journal of Cleaner Production 229, 84-93 2019
Citations: 90 - Understanding the impacts of the COVID-19 pandemic on sustainable agri-food system and agroecosystem decarbonization nexus: A review
B Adelodun, KY Kareem, P Kumar, V Kumar, KS Choi, KK Yadav, ...
Journal of Cleaner Production 318, 128451 2021
Citations: 87 - Dyes removal from textile wastewater by agricultural waste as an absorbent – A review
F Amalina, AS Abd Razak, S Krishnan, AW Zularisam, M Nasrullah
Cleaner Waste Systems, 100051 2022
Citations: 80 - Effect of organic loading rate on hydrogen (H2) and methane (CH4) production in two-stage fermentation under thermophilic conditions using palm oil mill effluent (POME)
S Krishnan, L Singh, M Sakinah, S Thakur, ZA Wahid, J Sohaili
Energy for Sustainable Development 34, 130-138 2016
Citations: 73 - Water hyacinth (Eichhornia crassipes) for organic contaminants removal in water – A review
F Amalina, AR Syukor, S Krishnan, AW Zularisam, M Nasrullah
Journal of Hazardous Materials Advances 2022
Citations: 68 - Electrocoagulation treatment of raw palm oil mill effluent: Effect of operating parameters on floc growth and structure
M Nasrullah, L Singh, S Krishnan, M Sakinah, DM Mahapatra, ...
Journal of Water Process Engineering 33, 101114 2020
Citations: 67 - A review on the impact of conductive nanoparticles (CNPs) in anaerobic digestion: Applications and limitations
C Jadhav Pramod, M Nurmunira, B Prakash, S Krishnan, ...
Environmental Technology & Innovation, 101526 2021
Citations: 66 - A Review of the Biological Treatment of Leachate: Available Technologies and Future Requirements for the Circular Economy Implementation
D Ilmasari, H Kamyab, A Yuzir, FA Riyadi, T Khademi, FF Al-Qaimd, ...
Biochemical Engineering Journal 2022
Citations: 63 - Biohydrogen production via thermophilic fermentation: A prospective application of Thermotoga species
W Shao, Q Wang, PF Rupani, S Krishnan, F Ahmad, S Rezania, ...
Energy 197, 117199 2020
Citations: 60 - Fermentative hydrogen production from indigenous mesophilic strain Bacillus anthracis PUNAJAN 1 newly isolated from palm oil mill effluent
P Mishra, S Thakur, L Singh, S Krishnan, M Sakinah, Z Ab Wahid
International Journal of Hydrogen Energy 42 (25), 16054-16063 2017
Citations: 60
CONSULTANCY
University of Malaysia, Pahang, Malaysia,
University of Technology, Malayisa
Industry, Institute, or Organisation Collaboration
University of Malaysia, Pahang, Malaysia,
University of Technology, Malayisa
INDUSTRY EXPERIENCE
Five years