Luis F. Razón
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View article: A reaction network approach to modeling carbon dioxide removal systems
A reaction network approach to modeling carbon dioxide removal systems Open
This paper focuses on what we call Reaction Network Cardon Dioxide Removal (RNDCR) framework to analyze several proposed negative emissions technologies (NETs) so as to determine when present-day Earth carbon cycle system would exhibit mul…
View article: Parameter-minimal analysis of carbon dioxide removal through direct air capture
Parameter-minimal analysis of carbon dioxide removal through direct air capture Open
The potential for multistationarity, or the existence of steady-state multiplicity, in the Earth System raises concerns that the planet could reach a climatic `tipping point,' rapidly transitioning to a warmer steady-state from which recov…
View article: Green Synthesis, Characterization, and Catalytic Activity of Amine-multiwalled Carbon Nanotube for Biodiesel Production
Green Synthesis, Characterization, and Catalytic Activity of Amine-multiwalled Carbon Nanotube for Biodiesel Production Open
An amine-functionalized multiwalled carbon nanotube (MWCNT) was prepared for use as a basic heterogeneous catalyst for the conversion of Cocos nucifera (coconut) oil and Hibiscus cannabinus (kenaf) oil to biodiesel. The 3-aminopropyltrimet…
View article: LCA of Mortar with Calcined Clay and Limestone Filler in RC Column Retrofit
LCA of Mortar with Calcined Clay and Limestone Filler in RC Column Retrofit Open
Cement manufacture contributes about 5–7% of the global carbon dioxide emission. The fastest short-term remedy is to replace parts of ordinary Portland cement (OPC) in concrete with supplementary cementitious materials (SCMs) to reduce CO2…
View article: A Comparative Environmental Life Cycle Assessment of the Combustion of Ammonia/Methane Fuels in a Tangential Swirl Burner
A Comparative Environmental Life Cycle Assessment of the Combustion of Ammonia/Methane Fuels in a Tangential Swirl Burner Open
Ammonia has been proposed as a replacement for fossil fuels. Like hydrogen, emissions from the combustion of ammonia are carbon-free. Unlike hydrogen, ammonia is more energy dense, less explosive, and there exists extensive experience in i…
View article: Multi-Criteria Decision Analysis for Energy Retrofit in Buildings
Multi-Criteria Decision Analysis for Energy Retrofit in Buildings Open
The construction industry is one of the most energy-intensive, resource depleting, and pollution emitting sector in the world. Methods of prolonging the service life and increasing the performance of buildings are heavily explored. This pr…
View article: Process integration models for emerging challenges: Optimal allocation of antivirals under resource constraints
Process integration models for emerging challenges: Optimal allocation of antivirals under resource constraints Open
The global scientific community has intensified efforts to develop, test, and commercialize pharmaceutical products to deal with the COVID-19 pandemic. Trials for both antivirals and vaccines are in progress; candidates include existing re…
View article: Integrated life cycle assessment-analytic hierarchy process (LCA-AHP) with sensitivity analysis of phosphorus recovery from wastewater in Metro Manila
Integrated life cycle assessment-analytic hierarchy process (LCA-AHP) with sensitivity analysis of phosphorus recovery from wastewater in Metro Manila Open
The adverse environmental impact caused by eutrophication has recently prompted the Philippine government to issue stringent regulatory standards for wastewater effluent quality. The involved stakeholders and industries are assessing the i…
View article: Robustness in power law kinetic systems with reactant-determined\n interactions
Robustness in power law kinetic systems with reactant-determined\n interactions Open
Robustness against the presence of environmental disruptions can be observed\nin many systems of chemical reaction network. However, identifying the\nunderlying components of a system that give rise to robustness is often\nelusive. The inf…
View article: Phosphorus recovery from wastewater and sludge
Phosphorus recovery from wastewater and sludge Open
Wastewater and sludge are potential resource of phosphorus (P) for fertilizer production. One method of recovering phosphorus is via chemical precipitation. In the study, phosphorus was recovered from wastewater and sludge. First, hydrolys…
View article: Life Cycle Assessment of a Retrofit Wastewater Nutrient Recovery System in Metro Manila
Life Cycle Assessment of a Retrofit Wastewater Nutrient Recovery System in Metro Manila Open
The increase in water pollution from nutrients like phosphorus and nitrogen has prompted the Philippine government to issue stringent regulatory standards for wastewater effluent quality. Hence, two alternatives are being proposed to be in…
View article: Carbon and Nitrogen Footprint Optimisation of Ammonia as an Automotive Fuel
Carbon and Nitrogen Footprint Optimisation of Ammonia as an Automotive Fuel Open
The transportation sector is one of the primary contributors to the global CO₂ emissions. Recent research suggests that ammonia is a potential alternative automotive fuel due to its favorable storage properties and the mature infrastructur…
View article: A Risk-based Criticality Analysis in Bioenergy Parks using P-graph Method
A Risk-based Criticality Analysis in Bioenergy Parks using P-graph Method Open
The adoption of bioenergy parks is a prospective solution to increase the sustainability of stand-alone biomass processing plants. Production and resource efficiency, lower carbon emissions, and economic sustainability are achieved by syne…