document

Connecting AnMBR and SOFC for Blackwater Treatment and Energy Production: Influence of the AnMBR pH on the SOFC Operational Strategy

Zha, Qinying (author)

Driven by the increasing demand for waste reduction and green energy production, an integrated system which combines an anaerobic membrane bioreactor (AnMBR) and a solid oxide fuel cell (SOFC) was proposed in this research project for blackwater treatment and energy production. The potentials of using an AnMBR for wastewater treatment and biogas...

master thesis 2023

document

Electrochemical Reduction for Metal Recovery in Water Treatment: A Novel Approach

Soodan, Akhilesh (author)

Groundwater is an essential source of drinking water, and it often contains contaminants in the form of dissolved metal ions that pose health risks and affect its suitability for consumption. Removal of these contaminants by conventional treatment methods, such as oxidation and filtration, results in additional treatment steps for managing...

master thesis 2023

document

Catalytic hydrothermal liquefaction of invasive species: A case study of Namibia’s Encroacher Bush

Bias, Nikos (author)

Regulations and investments in new technologies for biofuel production as an alternative to fossil fuels have boosted in the last years due to concerns about climate change and anthropogenic CO2 emissions. A valuable supply chain of biomass for biofuel production is one the most significant factors, in order to support the market’s demand. A...

master thesis 2023

document

Hydrochar from Fischer-Topsch biosludge: Is there an application for Fischer-Tropsch biosludge hydrochar produced via hydrothermal carbonization

van der Loos, Luke (author)

Improving circularity and reducing greenhouse gas emissions can be achieved by utilizing secondary streams like Fischer-Tropsch biosludge, which is typically disposed of in landfills. Biochar, which has accumulated increased interest recently, has significant potential for decreasing carbon emissions and can be created from biosludge. This...

master thesis 2023

document

Producing pellets from torrefied herbaceous biomass in a commercial capacity

Bias, Nikos (author)

The global temperature rise has pushed governments more into finding ways to reduce CO2 emissions, by increasing the use of renewable fuels. Lignocellulosic biomass (wood, forest residues, agricultural residues) is a renewable fuel that has still not been utilized to its full potential. That is because it lacks properties such as homogeneity,...

master thesis 2023

document

Heat in anaerobic digestion: Temperature inhibition and heat transfer integration with anaerobic digestion modelling

Heegstra, Sjoerd (author)

Interest in biogas has increased due to natural gas shortages and the energy transition. Most digesters in the EU have internal heating for process stability. Unheated reactors could potentially lower costs, but have decreased kinetics due to low operational temperatures, especially in winter. This raises the question how seasonal temperature...

master thesis 2022

document

Conversion of spent coffee grounds into biochar using a sustainable solar assisted biomass torrefaction technique

Padhi, Abhilash (author)

Coffee farmers and producers in Kerala (India) face a serious obstacle in their pursuit of a self-sustaining coffee processing technology and fuel deficiency. Research indicates that coffee, as one of the largest industries, generates a huge amount of waste, namely Spent Coffee Grounds (SCGs). This study aims to evaluate the feasibility and...

master thesis 2022

document

Inorganic fouling control and removal in oceanic carbon capture via in situ mineralization using bipolar membrane electrodialysis (BPMED): Fouling study for an electrochemical cell used to capture CO2 from seawater in the form of CaCO3

van der Wal, Hannah (author)

Oceanic CO2 capture technology can be used as a negative emission technology, or pre-treatment to reduce inorganic fouling (i.e., scaling) potential when further processing seawater. In this work CO2 from (synthetic) seawater was captured electrochemically via bipolar membrane electrodialysis. Although previous studies showed promising results...

master thesis 2021

document

Biochar for horticultural and agricultural applications using high temperature torrefaction technology: Biochar for horticultural and agricultural applications using high temperature torrefaction technology

Ravi, Pradeep (author)

Biochar for horticultural and agricultural applications using high temperature torrefaction technology Pradeep Ravi Supervisors: Prof Dr. D.J.E.M Roekaerts, ir.Bart de Vries, Dr. Luis Cutz, Dr.Lorenzo Botto & Dr.Ralph Lindeboom Biomass currently accounts for less than 10 percentage of the world’s renewable energy production. Currently the...

master thesis 2021

document

The performance of a limited aerated anaerobic membrane bioreactor for treating synthetic black water spiked with common Indian antibiotics

Mittapalli, Srilekha (author)

With increasing pressure on natural water resources, wastewater is gradually being considered as a potential source for potable water. Current WWTPs are designed for the removal of parameters like solids, nutrients, organic matter, and pathogens. For achieving a high-quality effluent, that enables reuse, it is important to also address the...

master thesis 2021

document

Concentrating hemicellulosic hydrolysates with different membrane technologies: A study on dewatering C5/C6 sugar streams with Nanofiltration and Membrane Distillation

Saranti, Anastasia (author)

This thesis constitutes a part of the "IMPRESS" project which is aiming at the production of bio-plastics by utilizing hemicellulosic hydrolysates. The hydrolysate stream, after following the steps of acid hydrolysis and neutralization, consists of monosaccharides (C5/C6 sugars), salt and sugar degradation products. The C5/C6 sugars need to be...

master thesis 2021

document

Treatment of Synthetic Palm Oil Mill Effluent (POME) Using AnMBR: Biological and Filtration Performance

TANG, JIANYI (author)

Palm oil mill effluent (POME) is a high organic pollution produced during the palm oil mill process, with a brownish color and stingy odor at high temperatures. Given the popularity in palm oil output over the years, the massive amount of POME causes growing concern. The enforcement of wastewater discharge standards and laws, as well as energy...

master thesis 2021

document

Removal of micropollutants with limited aeration assisted anaerobic digestion

Khande, Pravin (author)

To cope up with the rapid industrialization, urbanization and population it is very important to make use of sustainable water treatment technologies to reuse the processed water. Now a days, with technological advancements in anaerobic digestion (AD) process it is possible to recover some of the resources. AD can be coupled with the membrane to...

master thesis 2020

document

Ultrafiltration of Synthetic Palm Oil Mill Effluent (POME) using PVDF and a-Al2O3 Membranes

Wu, Jiamin (author)

In palm oil extraction process, a large amount of lipids are emulsified in waste stream and the hot, brownish palm oil mill effluent (POME) is generated. In this study, the membrane technology was proposed to test the feasibility of direct ultrafiltration (UF) of POME by using a-Al2O3 and PVDF membranes, and to figure out the recovery rates of...

master thesis 2020

document

Fenton Oxidation Initiated by FeOCl Pre-Coat for Cleaning Persistent Gel-Like Fouling of Ceramic Nanofiltration

YAO, Lu (author)

Ceramic nanofiltration (NF) is a newly developed technology for municipal sewage reclamation for drinking water production, agricultural and industrial utilisation, but organic fouling limits it to pilot-scale application. Herein, Fenton-based cleaning catalysed by FeOCl pre-coat was performed on ceramic NF membrane to clean persistent gel-like...

master thesis 2020

document

Effect of Limited-Aeration in AnMBR Operation

Koduvayur Balasubramanian, Sasidhar (author)

The scarcity of water is a major global concern in the modern times. Hence, the judicial use of water must be coupled with water reuse to counteract the water depletion. To reuse water, we eye on available treatment technologies which can guide us to circular use and reuse of water and nutrients. Anaerobic digestion, is known for producing...

master thesis 2020

document

Anaerobic digestion of palm oil, ethanol, and tequila production by products: Effects of alkaline hydrothermal pre-treatment on sugars release and biogas composition

Garcia Solano, Magnolia (author)

This study explored the interactions between alkaline hydrothermal pretreatment (AHPT) operational conditions temperature (°C), NaOH concentration (M) and residence time (min) on the compositional characteristics of the solid (SH) and liquid hydrolysate (LH) obtained from AHPT of sugarcane bagasse (SCB), empty fruit bunch (EFB) and agave bagasse...

master thesis 2020

document

In Search of Sun: Solar Pretreatment to enhance the Biomethane Potential of Empty Fruit Bunch (EFB) Fibres

Mc Gregor, Julia (author)

In the past decades, fossil fuels have become an increasing concern, due them being a non-renewable energy source and due to the environmental concerns related to the production and use of this fuel. This has led to increasingly more research in the value of bio-sourced lignocellulosic biomass such as Empty Fruit Bunch (EFB) fibres from the palm...

master thesis 2019

document

Steering product formation In high-pressure anaerobic systems: The effect of elevated pCO2 on the degradation of glucose and glycerol by a mixed culture

Chang, Kelly (author)

Biogas is the well-known product of Anaerobic Digestion (AD), but nowadays, the intermediate products (volatile fatty acids - VFAs) of anaerobic metabolism have gained increasing attention inside the “carboxylate platform”. However, steering and optimizing the process for selective metabolite production is still an unraveled task inside this...

master thesis 2019

document

Investigating Critical Parameters of Dissolved Air Flotation(DAF) for Solid-Liquid Separation with Different Influents as part of the LOTUSHR Project

Guleria, Tavishi (author)

Many rapidly expanding cities around the world including India’s capital New Delhi face increasing potable water quality and health risks due contaminated open drains carrying the cities untreated wastewater into the adjoining river, which is also the city’s water source. To tackle this problem in a practical and holistic way, innovative...

master thesis 2019