Sharon B. Velasquez‐Orta
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View article: Understanding the proliferation of bacteria across anode surfaces in microbial fuel cells (MFCs)
Understanding the proliferation of bacteria across anode surfaces in microbial fuel cells (MFCs) Open
Microbial fuel cells (MFCs) offer a promising alternative for sustainable wastewater treatment and energy recovery. However, the mechanisms underpinning electrogenic biofilm formation remain poorly understood. This study investigates the s…
View article: Mechanical Reinforcement of Paper Biocomposites Using Filamentous Cyanobacteria
Mechanical Reinforcement of Paper Biocomposites Using Filamentous Cyanobacteria Open
Rising concerns over plastic packaging and the growing demand for e-commerce have increased paper-based materials production, thereby intensifying environmental impacts of the paper industry, one of the most polluting industries worldwide.…
View article: Life cycle assessment of microalgae-assisted microbial fuel cells
Life cycle assessment of microalgae-assisted microbial fuel cells Open
Purpose In this work, a life cycle assessment (LCA) was conducted to compare the environmental impacts of a microbial fuel cell (MFC) using a biotic cathode based on graphite/ Chlorella vulgaris microalgae against using a conventional abio…
View article: Biohydrogen production through dark fermentation of agricultural waste: Novel strain and feedstock characterisation
Biohydrogen production through dark fermentation of agricultural waste: Novel strain and feedstock characterisation Open
Hydrogen is a promising alternative energy source that could help reduce reliance on fossil fuels and support the transition to decarbonisation of the energy sector. Biohydrogen can be produced through biological processes such as dark fer…
View article: Understanding the limitations of substrate degradation in bioelectrochemical systems
Understanding the limitations of substrate degradation in bioelectrochemical systems Open
Microbial Fuel Cells (MFCs) are innovative environmental engineering systems that harness the metabolic activities of microbial communities to convert chemical energy in waste into electrical energy. However, MFC performance optimization r…
View article: Intensified microalgae production and development of microbial communities on suspended carriers and municipal wastewater
Intensified microalgae production and development of microbial communities on suspended carriers and municipal wastewater Open
Wastewater represents an alternative source of nutrients in which to grow microalgae, whilst improving the quality of the wastewater, and reducing the downstream treatment required. However, commercialisation of microalgal cultures for suc…
View article: Pilot-scale microalgae cultivation and wastewater treatment using high-rate ponds: a meta-analysis
Pilot-scale microalgae cultivation and wastewater treatment using high-rate ponds: a meta-analysis Open
Microalgae cultivation in wastewater has been widely researched under laboratory conditions as per its potential to couple treatment with biomass production. Currently, only a limited number of published articles consider outdoor and long-…
View article: Bioremediation of waste by yeast strains
Bioremediation of waste by yeast strains Open
Over the past two decades, interest in pollutant removal by yeasts has grown substantially. Yeasts can remove high amounts of pollutants at low production costs under non-sterile conditions. This work presents a compilation of the studies …
View article: Direct biohydrogen production from chitosan harvested microalgae biomass and an isolated yeast
Direct biohydrogen production from chitosan harvested microalgae biomass and an isolated yeast Open
There is a bottleneck in recovery microalgae biomass from cultivations to recovery bioenergy the low metabolites yields achieved still lacks low operating cost. Optimization of the harvesting process such as coagulation-flocculation is cru…
View article: Algae for wastewater treatment and biofuel production
Algae for wastewater treatment and biofuel production Open
Biofuels can be used for the provision of electricity, heating, and transport. Interest in biofuels has been sparked by their suitability to decrease carbon emissions and fossil fuel dependency without major modifications to our existing e…
View article: Algal Systems for Resource Recovery from Waste and Wastewater
Algal Systems for Resource Recovery from Waste and Wastewater Open
This book provides comprehensive insights on existing technologies and up-to-date advances in the field of waste management and treatment using algal-based technologies via different approaches and systems. Coverage includes: Process funda…
View article: Microalgal consortium tolerance to bisphenol A and triclosan in wastewater and their effects on growth, biomolecule content and nutrient removal
Microalgal consortium tolerance to bisphenol A and triclosan in wastewater and their effects on growth, biomolecule content and nutrient removal Open
Amongst the many treatments available for the removal of emerging contaminants in wastewater, microalgal cultures have been shown to be effective. However, the effectiveness of exposure of a native microalgal consortium to emerging contami…
View article: Kinetic modelling of yeast growth and pollutant removal in secondary effluent
Kinetic modelling of yeast growth and pollutant removal in secondary effluent Open
In recent years, there has been significant interest in yeast-based wastewater treatment due to its high pollutant removal rate and ability to perform in non-sterile environments. In this work, a kinetic model was developed to predict yeas…
View article: Toward sustainable jet fuels: bioconversion of cellulose into isoprenoid biojet candidates using rumen bacteria and non-conventional yeast
Toward sustainable jet fuels: bioconversion of cellulose into isoprenoid biojet candidates using rumen bacteria and non-conventional yeast Open
In this study, organic acids were demonstrated as a promising carbon source for bisabolene production by the non-conventional yeast, Rhodosporidium toruloides , at microscale with a maximum titre of 1055 ± 7 mg/L. A 125-fold scale-up of th…
View article: Surface activity of biomolecules released from microalgae harvested by ozone-flotation
Surface activity of biomolecules released from microalgae harvested by ozone-flotation Open
This paper evaluates the relation between the efficiency of harvesting microalgae biomass or biomolecules (proteins, lipids and carbohydrates) and the surface activity of the amphiphiles released during the harvesting process. Microalgae c…
View article: Catalytic hydrothermal liquefaction of microalgae cultivated in wastewater: Influence of ozone-air flotation on products, energy balance and carbon footprint
Catalytic hydrothermal liquefaction of microalgae cultivated in wastewater: Influence of ozone-air flotation on products, energy balance and carbon footprint Open
The use of ozone-air flotation for microalgae harvesting was investigated, in terms of its environmental feasibility and use in catalytic HTL.The environmental feasibility was determined by the Net Energy Ratio (NER) and carbon footprint m…
View article: A non-sterile heterotrophic microalgal process for dual biomass production and carbon removal from swine wastewater
A non-sterile heterotrophic microalgal process for dual biomass production and carbon removal from swine wastewater Open
This study addresses the development of a non-sterile heterotrophic microalgae process, mainly using Scenedesmus sp., for the treatment of wastewater with high concentration of organic matter and biomass production. Urban and swine wastewa…
View article: Development of composites based on residual microalgae biomass cultivated in wastewater
Development of composites based on residual microalgae biomass cultivated in wastewater Open
Ultrasound pre-treatment and protein extraction of Desmodesmus sp. and Tetradesmus obliquus biomass induced residual microalgae/polycaprolactone (PCL) biocomposites with higher viscoelastic and mechanical properties as injection mould temp…
View article: Bioprospecting of wild type ethanologenic yeast for ethanol fuel production from wastewater-grown microalgae
Bioprospecting of wild type ethanologenic yeast for ethanol fuel production from wastewater-grown microalgae Open
Background Wild-type yeasts have been successfully used to obtain food products, yet their full potential as fermenting microorganisms for large-scale ethanol fuel production has to be determined. In this study, wild-type ethanologenic yea…
View article: Bioprospecting of wild type ethanologenic yeast for ethanol fuel production from wastewater-grown microalgae.
Bioprospecting of wild type ethanologenic yeast for ethanol fuel production from wastewater-grown microalgae. Open
Background: Wild type yeasts have been successfully used to obtain food products, yet their full potential as fermenting microorganisms for large-scale ethanol fuel production has to be determined. In this study, wild type ethanologenic ye…
View article: Sequential pretreatment to recover carbohydrates and phosphorus from Desmodesmus sp. cultivated in municipal wastewater
Sequential pretreatment to recover carbohydrates and phosphorus from Desmodesmus sp. cultivated in municipal wastewater Open
This study focused on the simultaneous recovery of carbohydrates (CHO) and phosphorus (P) from Desmodesmus sp. biomass cultivated in municipal wastewater, through a sequential pretreatment. The pretreatment consisted first of ultrasound to…
View article: Kinetic modelling of microalgae cultivation for wastewater treatment and carbon dioxide sequestration
Kinetic modelling of microalgae cultivation for wastewater treatment and carbon dioxide sequestration Open
A simple and robust microalgae kinetic model has been developed for application in the prediction and control of algae cultivations in wastewater. The microalgae kinetic model was calibrated using experimental cultivation data from Desmode…
View article: Microbial fuel cells for inexpensive continuous in-situ monitoring of groundwater quality
Microbial fuel cells for inexpensive continuous in-situ monitoring of groundwater quality Open
Online monitoring of groundwater quality in shallow wells to detect faecal or organic pollution could dramatically improve understanding of health risks in unplanned peri-urban settlements. Microbial fuel cells (MFC) are devices able to ge…
View article: The use of carbon dioxide in microbial electrosynthesis: Advancements, sustainability and economic feasibility
The use of carbon dioxide in microbial electrosynthesis: Advancements, sustainability and economic feasibility Open
This study examines the latest advancements in the field of Microbial ElectroSynthesis (MES) and reports a unique sustainability and economic assessment for the production of five alternative compounds (formic, acetic, propionic acids; met…
View article: Effect of Soaking Pre-Treatment on Reactive Extraction/<i>in situ</i> Transesterification of <i>Nannochloropsis occulata</i> for Biodiesel Production
Effect of Soaking Pre-Treatment on Reactive Extraction/<i>in situ</i> Transesterification of <i>Nannochloropsis occulata</i> for Biodiesel Production Open
Microalgal phospholipid bilayer contributes to the molar excesses of methanol and high acid concentration required in reactive extraction to achieve high fatty acid methyl ester (FAME) yield. This study reports an investigation into the ef…