Article
Agricultural Engineering
G. Zamboni, M. Capobianco
Summary: The study identified that a 40% blend of UCOME with conventional diesel led to the highest brake thermal efficiency, reduced NOX emissions, and advantageous combustion parameters. Increasing biodiesel content resulted in lower soot emissions and unaffected combustion stability.
BIOMASS & BIOENERGY
(2021)
Article
Energy & Fuels
B. Karpanai Selvan, Soni Das, M. Chandrasekar, R. Girija, S. John Vennison, N. Jaya, P. Saravanan, M. Rajasimman, Yasser Vasseghian, N. Rajamohan
Summary: The study investigates the performance and emission characteristics of various biomass blends in a diesel engine. The results show that the AO10D blend performs well with higher thermal efficiency and lower emissions at 50% load.
Article
Engineering, Environmental
M. S. Gad, A. S. El-Shafay, H. M. Abu Hashish
Summary: The study investigates the use of non-edible oils as alternative fuels, with the screw press extraction method showing higher oil yield and improved properties. Blending biodiesel with diesel oil at different ratios resulted in varying effects on engine performance and emissions.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Green & Sustainable Science & Technology
H. S. Anantha Padmanabha, Dillip Kumar Mohanty
Summary: The study examines the use of ethylene glycol diacetate as an oxygenated additive in blended biodiesel to enhance the performance of a diesel engine. The experiments were carried out on a diesel engine with variable compression ratio, using biodiesel blends containing 10-30% Jatropha and karanja oil methyl ester, and 1-3% additive. The results showed that adding 3% additive improved the brake thermal efficiency by 3.6-4.2% and reduced the brake specific fuel consumption by 0.08-0.24 kg/kWh. The emissions of hydrocarbons and carbon monoxide decreased, while nitrogen oxide slightly increased. The study concludes that ethylene glycol diacetate can be used as a suitable additive in blended biodiesel to improve the performance of diesel engines.
Article
Chemistry, Physical
Thangaraja Jeyaseelan, Nivin Chacko, N. Pushyanth, O. Siva Murali Krishna, Jim Alexander, E. Porpatham
Summary: The study explores the possibility of supplementing hydrogen with fossil or biofuels in internal combustion engines. By using hydrogen induction and partially hydrogenating biodiesel, the research aims to mitigate emissions and increase fuel efficiency. Results show that hydrogen induction and hydrogenated biodiesel effectively improve engine performance and reduce emissions compared to traditional biodiesel blends.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Mehmet Zerrakki Isik
Summary: The experiments in the article showed that adding alcohols to biodiesel fuel can increase fuel consumption, but blending specific quantities of heavy alcohols with biodiesel can significantly improve engine brake thermal efficiency, combustion, and reduce emissions.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Siraj Sayyed, Randip Kumar Das, Kishor Kulkarni
Summary: The research focuses on evaluating the performance, combustion, and emissions characteristics of a DICI engine fueled with dual biodiesel blends, produced from non-edible bio-oils. The study found differences in performance and emissions compared to neat diesel, with certain blends showing potential for reducing CO emissions.
Article
Thermodynamics
Jong Boon Ooi, Chia Chuin Kau, Dilrukshan Naveen Manoharan, Xin Wang, Manh-Vu Tran, Yew Mun Hung
Summary: Adding multi-walled carbon nanotubes improves the thermal conductivity of 20 vol% palm oil biodiesel in fossil diesel (B20). Experimental results from a single-cylinder diesel engine show that the addition of MWCNTs reduces ignition delay, improves combustion efficiency and performance, and reduces CO and UHC emissions while increasing NOx emissions.
Article
Environmental Sciences
Vijay Kumar, Akhilesh Kumar Choudhary
Summary: The current research aims to explore renewable fuels as alternatives to diesel in compression ignition engines and investigates their combustion, performance, and emission characteristics. The inclusion of DPA antioxidant additive has been found to reduce fuel consumption and exhaust gas temperature, while increasing combustion efficiency. The B30+DPA100 fuel blend shows effective control over emissions, with reductions observed in NOx, CO, HC, and smoke emissions compared to diesel. However, there is an increase in CO2 emissions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Thermodynamics
Seungju Baek, Hyeonjik Lee, Kihyung Lee
Summary: This study found that the electric supercharger can significantly improve the low-speed efficiency and torque of internal combustion engines, but may increase friction and pumping losses under various operating conditions. It also improved fuel efficiency and reduced carbon dioxide emissions, but particulate matter and nitrogen oxide emissions still fluctuated.
Article
Energy & Fuels
M. Mubarak, A. Shaija, T. V. Suchithra
Summary: Experimental results show that using Salvinia molesta biodiesel blend as fuel in diesel engines can significantly reduce peak pressure and heat release rate, as well as improve performance and reduce emissions, with B20 blend performing the best.
Article
Energy & Fuels
Luis Tipanluisa, Natalia Fonseca, Jesus Casanova, Jose-Maria Lopez
Summary: This study investigates the effects of different n-butanol/diesel fuel blends on a Euro V heavy-duty diesel engine's performance and emissions. The results show that using n-butanol can improve engine performance and reduce particulate emissions in most operating conditions, while increasing CO emissions. The study also indicates that THC emissions increase with n-butanol content, while NO2 emissions decrease.
Article
Energy & Fuels
Changlei Xia, Kathirvel Brindhadevi, Ashraf Elfasakhany, Mishal Alsehli, Siriporn Tola
Summary: The experimental study found that adding hydrogen can improve the combustion performance of compression ignition engines, while increasing the concentration of nanoparticles significantly improves brake thermal efficiency and reduces emissions. However, a slight decrease in NOx was observed under 75% engine load condition without the addition of nanoparticles.
Article
Environmental Sciences
Meixuan Wu, Ziyu Zhao, Peng Zhang, Mingding Wan, Jilin Lei, Bo Pan, Baoshan Xing
Summary: Research on the emission characteristics of environmental persistent free radicals (EPFRs) from diesel engines at different working conditions is limited. Lower engine speed and higher altitude are generally associated with higher PM10 emissions with more stable and ordered structures. EPFRs intensity in particles showed no significant change in dark, and over 70% of the EPR signals survived under UV light in a one-month aging simulation, suggesting potential long lasting and widespread risks that should be investigated extensively.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Energy & Fuels
Raslan A. Alenezi, A. M. Norkhizan, R. Mamat, Erdiwansyah, G. Najafi, Mohamed Mazlan
Summary: The research found that adding MWCNTs to biodiesel-diesel blends can significantly reduce CO2 emissions and decrease NOx emissions, especially for B20 and B30 samples. However, for B10 blends, an increasing trend of NOx emissions was reported with an increase in MWCNTs content.
Article
Energy & Fuels
S. Dharma, A. S. Silitonga, A. H. Shamsuddin, A. H. Sebayang, Jassinnee Milano, R. Sebayang, Sarjianto, H. Ibrahim, N. Bahri, B. Ginting, N. Damanik
Summary: Global warming and fossil fuel pollution have become major global concerns. Biodiesel, as an alternative fuel, has its own controversies including increased corrosion and acidity. This study focused on observing the corrosion behavior of mild steel immersed in J50C50 biodiesel-diesel fuel blends at ambient temperature. The results showed that the blend was more corrosive compared to diesel fuel.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Energy & Fuels
Hoora Mazaheri, Hwai Chyuan Ong, H. H. Masjuki, A. Arslan, Wen Tong Chong, Zeynab Amini
Summary: This study investigates the tribological features of rice bran oil-based biodiesel as a means to improve lubricity. The results show that friction decreases with the decrease of biodiesel concentration, while the formation of wear scars increases. The impact on lubricity is mainly due to changes in biodiesel concentration.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Green & Sustainable Science & Technology
Ashwin Jacob, B. Ashok, Hwai Chyuan Ong, Phung Thi Kim Le
Summary: This study aims to sustainably produce low-density biodiesel from Chlorella pyrenoidosa microalgae by heterotrophic means and processed using enzymatic transesterification. The engine testing showed that the low-density biodiesel has lower fuel consumption and emissions compared to diesel fuel. The optimal biodiesel proportion was determined using multivariate principal component analysis-desirability approach.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Green & Sustainable Science & Technology
M. A. Hazrat, M. G. Rasul, M. M. K. Khan, N. Ashwath, I. M. R. Fattah, Hwai Chyuan Ong, T. M. Mahlia
Summary: Edible oil-based biodiesel production through transesterification was optimized using response surface methodology with the Box-Behnken model. The optimal process conditions were determined to be 5.89 M methanol, 0.5% (w/w) KOH, 60 degrees C, and 120 min, with a predicted yield of 99.5% and an experimental yield of 99.6%. In addition, two different kinetic models were developed and the activation energy for the pseudo-first-order irreversible reaction was found to be 16.9% higher than for the pseudo-homogenous irreversible reaction.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Energy & Fuels
Ibham Veza, Irianto, Anh Tuan Hoang, Abdulfatah A. Yusuf, Safarudin G. Herawan, M. E. M. Soudagar, Olusegun D. Samuel, M. F. M. Said, Arridina S. Silitonga
Summary: The addition of acetone-butanol-ethanol (ABE) as a fuel can decrease CO2 and NOx emissions in an HCCI-DI engine, but has no significant effect on HC, CO, PM, and soot emissions. Furthermore, engine performance is improved with the addition of ABE.
Correction
Energy & Fuels
M. Gul, N. W. M. Zulkifli, H. H. Masjuki, M. A. Kalam, M. A. Mujtaba, M. H. Harith, A. Z. Syahir, Waqar Ahmed, Abdul Bari Farooq
Article
Energy & Fuels
Wei-Hsin Chen, Partha Pratim Biswas, Hwai Chyuan Ong, Anh Tuan Hoang, Thanh-Binh Nguyen, Cheng-Di Dong
Summary: The study of hydrogen energy is gaining attention for its effectiveness in achieving net zero and environmental sustainability. Bioethanol is a carbon-neutral fuel for hydrogen production and has potential as a sustainable energy source. This research assesses different routes for ethanol reforming and evaluates the impact of catalyst physicochemistry and experimental parameters on hydrogen production. The findings show that non-noble metals like Co and Ni are more reactive than noble metals in ethanol steam reforming, while the sequence of hydrogen selectivity differs in autothermal reforming of ethanol. The review highlights the importance of sustainable hydrogen production and decarbonization in reaching the net zero target.
Article
Thermodynamics
Guangcan Su, Nurin Wahidah Mohd Zulkifli, Hwai Chyuan Ong, Shaliza Ibrahim, Mei Yee Cheah, Ruonan Zhu, Quan Bu
Summary: The global pandemic of COVID-19 has had devastating effects on the environment, society, and economy worldwide. In this study, a sustainable and environmentally friendly method is proposed to convert hazardous medical waste into valuable fuel products through pyrolysis. The use of medical protective clothing (MPC) in pyrolysis, along with the addition of catalysts, improves the quality of bio-oil produced from oil palm wastes (OPWs) pyrolysis.
Review
Thermodynamics
Rahul Mishra, Hwai Chyuan Ong, Chi -Wen Lin
Summary: Sustainable energy sources are needed to meet the increasing energy demand caused by population growth. Pyrolysis and gasification can convert biomass and plastic waste into energy. Co-processing, such as co-pyrolysis and co-gasification, has been identified as a key method for converting waste into fuel with higher hydrogen concentrations. The production of hydrogen from biomass and plastic waste using these techniques is being explored for its high conversion efficiencies and low costs. Research on co-pyrolysis and co-gasification for hydrogen-rich syngas production from plastics and biomass is limited, so further studies are needed. This review aims to enhance understanding of these techniques and their potential for sustainable energy production and waste management.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Energy & Fuels
Beyene Hagos Aregawi, Hoang Chinh Nguyen, Chun-Chong Fu, Hwai Chyuan Ong, Colin J. Barrow, Chia-Hung Su, Shao-Jung Wu, Horng-Yi Juan, Fu-Ming Wang
Summary: This study developed a novel catalyst-free electrolysis process using an ionic liquid as a supporting electrolyte for biodiesel production. The ionic liquid, 1-ethyl-3-methylimidazolium chloride ([Emim]Cl), exhibited the highest electrical conductivity and best electrolytic performance for transesterification. Optimized reaction conditions resulted in a maximum biodiesel yield of 97.76%, and [Emim]Cl could be efficiently reused for multiple cycles.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Chemistry, Physical
Hoang Chinh Nguyen, Beyene Hagos Aregawi, Chun-Chong Fu, Hwai Chyuan Ong, Colin J. Barrow, Chia-Hung Su, Shao-Jung Wu, Horng-Yi Juan, Fu-Ming Wang
Summary: A novel catalyst-free electrolysis method using deep eutectic solvents (DESs) as both a supporting electrolyte and a cosolvent for biodiesel synthesis was developed and tested. Among the DESs synthesized, DES-2 exhibited the highest efficiency for electrolysis-based biodiesel synthesis. The DES-2-assisted electrolysis was optimized to maximize biodiesel yield, achieving a yield of 94.71% with certain conditions.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Green & Sustainable Science & Technology
Moe Thiri Zun, Muhammad Shakeel Ahmad, H. Fayaz, Jeyraj Selvaraj, Waqar Ahmed, Yanru Wang, Nidhal Ben Khedher, A. S. Silitonga, Ashraf Elfasakhany, M. A. Kalam, Bushra Rashid
Summary: This study investigates the viability and economics of using green hydrogen as a combustion fuel in an absorption-desorption-based cooling system. Specially designed burners were retrofitted with a portable ammonia-water-based cooling system, and the effect of hydrogen flow and distance from the burner was optimized. The system running on hydrogen exhibited the highest performance compared to electricity and propane.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Green & Sustainable Science & Technology
Abdi Hanra Sebayang, Fazril Ideris, Arridina Susan Silitonga, A. H. Shamsuddin, M. F. M. A. Zamri, Muhammad Anhar Pulungan, Sihar Siahaan, Munawar Alfansury, F. Kusumo, Jassinnee Milano
Summary: This study optimized the ultrasound-assisted oil extraction process from Carica candamarcensis seed using response surface methodology. The process parameters of extraction time, ultrasound amplitude level, and solvent to seed ratio were varied according to the Box-Behnken experimental model. The regression model provided the optimal values and corresponding yield for these parameters, which were validated experimentally. Physicochemical properties and fatty acid compositions of the extracted oil were evaluated, and the oil was further converted into biodiesel via ultrasound-assisted transesterification.
Article
Engineering, Environmental
Shu-Hui Liu, Jun-Ru Ke, Hwai Chyuan Ong, Chi-Wen Lin
Summary: The deoxidizing packing material (DPM) in a microbial fuel cell (MFC) was improved by adding a deoxidizing agent (DA) to its surface to form DPMDA-out, effectively consuming dissolved oxygen in the anode tank. The use of DPMDA-out in the MFC resulted in higher removal efficiencies for isopropanol and styrene compared to using DPMDA-in. The DPMDA-out-based MFC also had higher voltage outputs and power densities for both isopropanol and styrene compared to the DPMDA-in-based MFC. Furthermore, the electricity production by the MFC with styrene as its substrate exceeded that with isopropanol, despite the lower removal efficiency of styrene.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
