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Szabo Corbacho, M. (author), Sharma, Pragnya (author), Míguez, Diana (author), de la Sovera, Victoria (author), Brdjanovic, Damir (author), Etchebehere, Claudia (author), Garcia, H. (author), van Lier, J.B. (author)The study investigated the effects of long-chain fatty acids (LCFA) on anaerobic sludge treating lipid-rich wastewater. It involved batch experiments with three sludge samples: two acclimated to lipids and one non-acclimated. The experiments aimed to observe the degradation of LCFA, specifically oleate and palmitate, by dosing them at...journal article 2024
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Garcia Rea, V.S. (author)Anaerobic digestion (AD) is a biochemical process in which organic matter is converted into biogas in a series of biochemical reactions. The development of high-rate anaerobic reactors (HRAR) led to the breakthrough of full-scale applications of AD for the treatment of industrial wastewater. HRARs, such as the upflow anaerobic sludge blanket ...doctoral thesis 2023
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Wasajja, H. (author)Biomass is predominantly the major source of energy in the global south. It is the readily available source of energy in global south and is used in rural energy households in the form of wood, charcoal and agricultural residues. However, biomass energy source is not utilised in the most efficient way and hence there is still a gap in achieving...doctoral thesis 2023
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Verburg, Dylan (author)On the 14th of July 2013, a methane peak was observed in the Gale crater. This methane peak has been investigated in a non-biological context before. This study applies exoplanet research strategies and knowledge about biological methane production on Earth to investigate the biological context. Bayes formula is the foundation of the Bayesian...master thesis 2023
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Deng, Z. (author), Ferreira, Ana Lucia Morgado (author), Spanjers, H. (author), van Lier, J.B. (author)Bovine serum albumin (BSA) and casein (CAS) were used in batch tests to compare the protein degradation in the presence and absence of carbohydrates and volatile fatty acids (VFAs). The modified Gompertz model was applied to estimate reaction rates. The results showed that deamination was the rate-limiting step, with a rate ranging between 2...journal article 2023
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Pavez Jara, J.A. (author), van Lier, J.B. (author), de Kreuk, M.K. (author)Full-scale thermal hydrolysis processes (THP) showed an increase in nutrients release and formation of melanoidins, which are considered to negatively impact methanogenesis during mesophilic anaerobic digestion (AD). In this research, fractionation of THP-sludge was performed to elucidate the distribution of nutrients and the formed...journal article 2023
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Wei, P. (author), Uijttewaal, W.S.J. (author), Spanjers, H. (author), van Lier, J.B. (author), de Kreuk, M.K. (author)Gas-mixing is commonly applied in anaerobic digesters, yet the resulting flow and hydraulic mixing are difficult to evaluate because of limited full-scale experimental data and uncertainties in integrating sludge rheological data. This study used computational fluid dynamics (CFD) to assess the impact of treated sludge rheology on flow and...journal article 2023
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Cabeza, Camila (author), van Lier, J.B. (author), van der Steen, Peter (author)Microalgae-bacteria biomass was digested through anaerobic digestion (AD) to produce biogas. Since microalgae typically have a more resistant cell wall than activated sludge (AS), its anaerobic biodegradability is limited. Therefore, three different pre-treatment techniques were evaluated for their effect on anaerobic biodegradability,...journal article 2023
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Deng, Z. (author), Muñoz Sierra, Julian (author), Ferreira, Ana Lucia Morgado (author), Cerqueda Garcia, D. (author), Spanjers, H. (author), van Lier, J.B. (author)Treating protein-rich wastewater using cost-effective and simple-structured single-stage reactors presents several challenges. In this study, we applied an anaerobic sequencing batch reactor (AnSBR) to treat protein-rich wastewater from a slaughterhouse. We focused on identifying the key factors influencing the removal of chemical oxygen...journal article 2023
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Hu, Zhi Yi (author), Lin, Yi Peng (author), Wang, Qing Ting (author), Zhang, Yi Xin (author), Tang, Jie (author), Wang, Shuai (author), van Loosdrecht, Mark C.M. (author), Zeng, Raymond Jianxiong (author), Zhang, Fang (author)By maintaining the cell integrity of waste activated sludge (WAS), structural extracellular polymeric substances (St-EPS) resist WAS anaerobic fermentation. This study investigates the occurrence of polygalacturonate in WAS St-EPS by combining chemical and metagenomic analyses that identify ∼22% of the bacteria, including Ferruginibacter and...journal article 2023
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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
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van Roon, Solee (author)An increasing trend of urbanization, land shortages and frequent floodings have created unfavorable living circumstances for Philippine inhabitants. Finch Floating Homes aims to repurpose the permanently flooded ricefields in Hagonoy into flood-proof, typhoon-resilient, affordable housing. The floating neighborhood will serve as storm-resilient...master thesis 2022
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Zha, Qinying (author)Palm oil is a popular ingredient in domestic products. The palm oil industry has been growing rapidly over the past decades, so that the amount of palm oil mill effluent (POME) generated from the palm oil production has been increasing as well. The anaerobic membrane bioreactor (AnMBR) is a treatment solution that can remove organic pollutants...student report 2022
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Mathematical Modelling of the Hydrolysis Process of Waste Activated Sludge in a Novel Cascade SystemDurry, Sebastian (author)The hydrolysis of sludge solids especially for difficultly degradable sludges such as WAS is not fully understood, yet. The first-order hydrolysis rate was shown to function well for most easily degradable sludges and soluble substrates. This description for substrate hydrolysis in the context of anaerobic digestion has the benefit of being very...master thesis 2022
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Guerrero Esquivel, Ana Judith (author)Recovering phosphorus from manure allows to cycle a valuable nutrient back to agriculture while offering farmers a way to comply with the increasingly restrictive legislation concerning livestock manure application on agricultural land. To this end, a novel biocrystallization process in an Upflow Anaerobic Sludge Bed (UASB) reactor has been...master thesis 2022
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De Crescenzo, Carmen (author), Marzocchella, Antonia (author), Karatza, Despina (author), Molino, Antonio (author), Ceron Chafla, P.S. (author), Lindeboom, R.E.F. (author), van Lier, J.B. (author), Chianese, Simeone (author), Musmarra, Dino (author)Background: Pressurised anaerobic digestion allows the production of biogas with a high content of methane and, at the same time, avoid the energy costs for the biogas upgrading and injection into the distribution grid. The technology carries potential, but the research faces practical constraints by a.o. the capital investment needed in high...journal article 2022
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Deng, Z. (author), Ferreira, Ana Lucia Morgado (author), Spanjers, H. (author), van Lier, J.B. (author)Abstract: Protein-rich agro-industrial waste streams are high in organic load and represent a major environmental problem. Anaerobic digestion is an established technology to treat these streams; however, retardation of protein degradation is frequently observed when carbohydrates are present. This study investigated the mechanism of the...journal article 2022
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Hao, Xiaodi (author), Yu, W. (author), Yuan, Tugui (author), Wu, Yuanyuan (author), van Loosdrecht, Mark C.M. (author)As a product of phosphorous recovery from anaerobic digestion (AD) of waste activated sludge (WAS), vivianite has received increasing attention. However, key factors controlling vivianite formation have not yet been fully addressed. Thus, this study was initiated to ascertain key factors controlling vivianite formation. A simulation of...journal article 2022
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Ek, Sovannmonica (author)Palm Oil Mill Effluent (POME) is an attractive medium for biogas production in an anaerobic membrane bioreactor (AnMBR) because of its high lipid content. Long-chain fatty acid (LCFA) accumulation is toxic and considered harmful for the biological performance within the reactor as they can be absorbed by biomass particles causing sludge...student report 2021
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Guo, H. (author), Oosterkamp, M.J. (author), Tonin, F. (author), Hendriks, Alexander (author), Nair, Revathy (author), van Lier, J.B. (author), de Kreuk, M.K. (author)Hydrolysis is considered to be the rate-limiting step in anaerobic digestion of waste activated sludge (WAS). In this study, an innovative 4 stages cascade anaerobic digestion system was researched to (1) comprehensively clarify whether cascading configuration enhances WAS hydrolysis, and to (2) better understand the governing hydrolysis...journal article 2021