Denny K. S. Ng
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View article: Scaling Up a Heater System for Devulcanization of Off-Spec Latex Waste: A Two-Phase Feasibility Study
Scaling Up a Heater System for Devulcanization of Off-Spec Latex Waste: A Two-Phase Feasibility Study Open
Although rubber waste devulcanization has been widely studied, its industrial-scale implementation remains limited due to challenges in process scalability. This study examines the feasibility of devulcanizing off-spec latex waste through …
View article: FD-Bench: A Full-Duplex Benchmarking Pipeline Designed for Full Duplex Spoken Dialogue Systems
FD-Bench: A Full-Duplex Benchmarking Pipeline Designed for Full Duplex Spoken Dialogue Systems Open
Full-duplex spoken dialogue systems (FDSDS) enable more natural human-machine interactions by allowing real-time user interruptions and backchanneling, compared to traditional SDS that rely on turn-taking. However, existing benchmarks lack…
View article: Corrigendum to “Analysis of current state, gaps, and opportunities for technologies in the Malaysian oil palm estates and palm oil mills towards net-zero emissions”
Corrigendum to “Analysis of current state, gaps, and opportunities for technologies in the Malaysian oil palm estates and palm oil mills towards net-zero emissions” Open
[This corrects the article DOI: 10.1016/j.heliyon.2024.e30768.].
View article: Techno-Economic Optimisation of Green and Clean Hydrogen Production
Techno-Economic Optimisation of Green and Clean Hydrogen Production Open
Energy is typically generated from fossil fuels, leading to significant greenhouse gas (GHG) emissions. Therefore, cleaner energy needs to be used to reduce GHG emissions in the energy sector. Hydrogen (H 2 ) is identified as a potential r…
View article: Optimisation of Vacuum Distillation Units in Oil Refineries Using Surrogate Models
Optimisation of Vacuum Distillation Units in Oil Refineries Using Surrogate Models Open
To ensure the optimum performance of downstream processes in a petrochemical refinery, the operation of a vacuum distillation unit (VDU) is critical. It needs to satisfy the yield and quality requirements of the downstream process. Otherwi…
View article: Life cycle optimisation for negative emission technologies in electricity generation
Life cycle optimisation for negative emission technologies in electricity generation Open
Negative emission technologies (NETs) have been identified as the key to achieve carbon dioxide (CO2) emission targets in most coutries. However, selecting the most appropriate and cost-efficient NET to meet these targets is challenging. T…
View article: Optimal integration of hydrogen production process with carbon dioxide capture, utilisation and storage
Optimal integration of hydrogen production process with carbon dioxide capture, utilisation and storage Open
Hydrogen (H2) has been identified as one of the potential energy carriers for the future. Currently, most H2 is produced via steam methane reforming (SMR) from non-renewable natural gas. This process produces a large amount of carbon dioxi…
View article: Economic Feasibility and Water Footprint Analysis for Smart Irrigation Systems in Palm Oil Industry
Economic Feasibility and Water Footprint Analysis for Smart Irrigation Systems in Palm Oil Industry Open
The Malaysian palm oil industry is the second largest global producer of palm oil products in the world after Indonesia. However, oil palm plantation activities are typically very labour-intensive and inefficient. The rapid development of …
View article: Low-Carbon Energy Transition for the Sarawak Region via Multi-Period Carbon Emission Pinch Analysis
Low-Carbon Energy Transition for the Sarawak Region via Multi-Period Carbon Emission Pinch Analysis Open
The Paris agreement in 2015 has required that countries commit to global carbon emission reduction by setting their national targets. In most countries, the electricity sector is identified as one of the major contributors to carbon emissi…
View article: Regional Planning and Optimization of Renewable Energy Sources for Improved Rural Electrification
Regional Planning and Optimization of Renewable Energy Sources for Improved Rural Electrification Open
Over 13% of the global population (most of which are rural communities) still lack access to electricity. A typical resolution to this would be to generate more electricity from existing power generation infrastructure. However, the urgenc…
View article: Mathematical optimisation for sustainable bio-methane (Bio-CH4) production from palm oil mill effluent (POME)
Mathematical optimisation for sustainable bio-methane (Bio-CH4) production from palm oil mill effluent (POME) Open
Palm oil mill effluent (POME) is recognised as one of the effluents which may cause environmental pollution when it is not properly treated. Conventional open pond systems are inefficient in treating POME as they generate and release bioga…
View article: A Review of Process Systems Engineering (PSE) Tools for the Design of Ionic Liquids and Integrated Biorefineries
A Review of Process Systems Engineering (PSE) Tools for the Design of Ionic Liquids and Integrated Biorefineries Open
Over the years, the global process industry is continually improving in product development and process performances [...]
View article: Synthesis of Integrated Flower Waste Biorefinery: Multi-Objective Optimisation with Economic and Environmental Consideration
Synthesis of Integrated Flower Waste Biorefinery: Multi-Objective Optimisation with Economic and Environmental Consideration Open
The improper disposal of flower waste from cultural activities is one of the main challenges in certain countries such as India. If the flower waste is not managed properly, it causes a number of environmental issues. Therefore, various te…
View article: Design of lubricants in electric and hybrid vehicles via computer-aided molecular design (CAMD) technique
Design of lubricants in electric and hybrid vehicles via computer-aided molecular design (CAMD) technique Open
The market of electric and hybrid vehicles (EVs and HEVs) is expanding exponentially in recent years. It serves as a greener solution in the transportation sector as compared to internal combustion engine vehicles’ (ICEVs). Conventional lu…
View article: Life Cycle Optimisation for Bio-energy Systems with Carbon Capture and Storage in Electricity Generation
Life Cycle Optimisation for Bio-energy Systems with Carbon Capture and Storage in Electricity Generation Open
Bioenergy with carbon capture and storage (BECCS) has been identified as the most viable and cost-effective technology to achieving the 1.5°C targets set down in the 2015 Paris Agreement. It is essential to understand the impact of BECCS o…
View article: Promoting Circular Economy Between Palm Oil Sector with Multiple Industries
Promoting Circular Economy Between Palm Oil Sector with Multiple Industries Open
Malaysia is the second largest producer and exporter of palm oil products in the world, with the increasing production of crude palm oil (CPO) over the recent years. On the contrary, the palm oil sector has also received number of negative…
View article: PROVEN APPROACHES TO ENHANCE IMPLEMENTATION OF ENERGY MANAGEMENT SYSTEMS AT A LEADING OIL COMPANY
PROVEN APPROACHES TO ENHANCE IMPLEMENTATION OF ENERGY MANAGEMENT SYSTEMS AT A LEADING OIL COMPANY Open
Energy Management systems (EnMS) is an effective measure to manage energy utilization, drive for continuous improvement in energy performance and sustain business competitiveness. The public expectations i.e., greenhouse gas emission limit…
View article: Optimal Blue Hydrogen Process with CO2 Capture,Utilisation and Storage
Optimal Blue Hydrogen Process with CO2 Capture,Utilisation and Storage Open
Hydrogen (H2) energy has a high potential to become a source of future sustainable fuel to replace fossil fuel. At present, natural gas conversion is the conventional process to produce H2. However, this process produces carbon dioxide (CO…
View article: A systematic approach for synthesis and optimisation of sustainable oil palm value chain (OPVC)
A systematic approach for synthesis and optimisation of sustainable oil palm value chain (OPVC) Open
An oil palm value chain (OPVC) considers the interconnectivity between each activity within the oil palm industry to allow for a top-down overview of the industry, while capturing the details for more substantial system interactions. Howev…
View article: Systematic decision-making framework for evaluation of process alternatives for sustainable ammonia (NH3) production
Systematic decision-making framework for evaluation of process alternatives for sustainable ammonia (NH3) production Open
Ammonia (NH3) is the second highest produced chemical commodity worldwide, which commonly used in manufacturing of fertilisers, refrigerants, dyes and other chemicals. Haber Bosch process is the most established process to produce NH3 from…
View article: Analysis Study for the Benefits of Heavy Crude Oil Hydrotreating before Distillation
Analysis Study for the Benefits of Heavy Crude Oil Hydrotreating before Distillation Open
Heavy crude oils contain considerable amounts of contaminants (e.g., sulfur, nitrogen, and heavy metals) and asphaltenes. The high contents of such contaminants in crude oil would decrease the efficiency of the refining process at the dist…
View article: Carbon Emission Pinch Analysis for Regional Planning of Rural Electrification
Carbon Emission Pinch Analysis for Regional Planning of Rural Electrification Open
Rural electrification is an ongoing issue in Sarawak, a state in East Malaysia. About 7 % of Sarawak’s rural population is still inaccessible to electricity. However, adding more fossil fuel resources to electrify Sarawak fully will result…
View article: Mathematical Optimisation Approach for Improvement of Palm Oil Traceability
Mathematical Optimisation Approach for Improvement of Palm Oil Traceability Open
Oil palm is recognised as the most productive oil crop with highest oil yield per hectare of agriculture land. The palm oil products generated from oil palm are widely used in our daily life, contributing from food processing, personal car…