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Ali, W. (author)Deep-sea mining Industry and academia are presently investigating the potential of deep-seamining for valuable resources such as poly-metallic nodules. Nevertheless, the process of manoeuvring, excavating, and processing these resources poses a threat to the deep-sea environment through the generation of plumes of suspended fine-grained solids,...doctoral thesis 2024
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Abolfazli, Ehsan (author), Osborn, Ryan (author), Dunne, K.B.J. (author), Nittrouer, Jeffrey A. (author), Strom, Kyle (author)Muddy sediment constitutes a major fraction of the suspended sediment mass carried by the Mississippi River. Thus, adequate knowledge of the transport dynamics of suspended mud in this region is critical in devising efficient management plans for coastal Louisiana. We conducted laboratory tank experiments on the sediment suspended in the...journal article 2024
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Ali, W. (author), Kirichek, Alex (author), Chassagne, C. (author)In this work a high-magnification digital video camera in combination with a settling column is used to study in a first part the influence of the amount of flocs transferred into the settling column on their settling velocity. In a second part, the setup was used to study the properties of flocs prepared at different clay concentrations but at...journal article 2024
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Elerian, M.F.A.I. (author)The depletion of terrestrial mineral deposits and the increasing demand for minerals are causing disruptions in the global supply chain. The shift towards renewable technologies requires significant quantities of metals used, for example, in the production of electric vehicles and wind turbines, putting additional strain on the supply chain. The...doctoral thesis 2023
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Safar, Z. (author), Deng, Zhirui (author), Chassagne, C. (author)In the present study, we aim to parameterize a flocculation model, based on a logistic growth equation, by conducting laboratory experiments. The flocculation experiments are performed using two types of natural sediments and different flocculating agents: salt (monovalent and divalent), extracellular polymeric substances, and living and dead...journal article 2023
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Deng, Z. (author), He, Qing (author), Manning, Andrew J. (author), Chassagne, C. (author)The interactions between organic and inorganic particles in the context of flocculation is an on-going topic of research. Most current researches do not distinguish between the effects of EPS (produced by microorganisms) and living microorganisms (like algae). In this study, the effect of salinity, EPS and living algae on sediment...journal article 2023
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Elerian, M.F.A.I. (author), Huang, Ziyang (author), van Rhee, C. (author), Helmons, R.L.J. (author)We have developed and investigated a hydrodynamic model of Deep-Sea Mining (DSM) collector turbidity flows that captures sediment particle aggregation and breakup. Flocculation is expected to have a significant impact on determining the spread patterns of the turbidity flows and the resulting turbidity currents. The recently validated drift...journal article 2023
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Safar, Z. (author)Coastal areas are subjected to major anthropogenic influences, as they are traditionally economically important regions, which is reflected by the presence of harbours, especially at river mouths. The Dutch coastal area is influenced by the discharge of fresh water from the Rhine river that creates the Rhine Region Of Freshwater Influence (Rhine...doctoral thesis 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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Deng, Z. (author)Flocculation is an important process in fine cohesive sediment transport that still requires investigation as it is a complex process, involving the aggregation, break-up and reconformation of mineral and biological particles.<br/>Fine cohesive sediments are found in rivers, estuaries and their adjacent areas. With the rapid economic development...doctoral thesis 2022
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Ali, W. (author), Enthoven, D.H.B. (author), Kirichek, Alex (author), Helmons, R.L.J. (author), Chassagne, C. (author)For green energy transition, the industry seeks alternative resources for nickel and cobalt, the main ingredients for energy storage devices and other applications. Polymetallic nodules lying at the abyssal plain are rich in these mineral resources, which leads to an increased interest in deep-sea mining (DSM) of polymetallic nodules. During the...conference paper 2022
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Helmons, R.L.J. (author)There is an expected increase in demand of critical raw materials, e.g. nickel and cobalt, mainly driven by the shift towards renewable energy solutions and the increase in production of electric vehicles. That trend has raised the interests for the mining of polymetallic nodules. The most extensive nodule depostions are found on the abyssal...conference paper 2022
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Elerian, M.F.A.I. (author), Bedón Vásquez, A.A. (author), Enthoven, D.H.B. (author), Helmons, R.L.J. (author), van Rhee, C. (author)Renewable energy installations and energy storage solutions require a significant amount of critical raw materials such as nickel, cobalt and rare earth elements. The supply chains of these raw materials face many challenges, e.g., these materials are often found at lower grades on land. These complications motivate the search for new resources....conference paper 2022
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Ali, W. (author), Enthoven, D.H.B. (author), Kirichek, Alex (author), Chassagne, C. (author), Helmons, R.L.J. (author)Flocculation between inorganic sediment, salt ions and microscopic organic<br/>matter present in the marine environment might play an important role in the<br/>dynamics of turbidity currents. The ability to predict, understand, and potentially<br/>leverage the effect of flocculation on turbidity currents will help to minimize the<br/>impact of...journal article 2022
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Chen, Xingyu (author), Lee, Yu Jen (author), Yuan, Tian (author), Lei, Zhongfang (author), Adachi, Yasuhisa (author), Zhang, Zhenya (author), Lin, Y. (author), van Loosdrecht, Mark C.M. (author)A reasonable recovery of excess sludge may shift the waste into wealth. Recently an increasing attention has been paid to the recycling of extracellular biopolymers from conventional and advanced biological wastewater treatment systems such as flocculent activated sludge (AS), bacterial aerobic granular sludge (AGS), and algal-bacterial AGS...review 2022
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Helmons, R.L.J. (author), de Wit, Lynyrd (author), de Stigter, Henko (author), Spearman, Jeremy (author)Over the past decade, deep-sea mining (DSM) has received renewed interest due to scarcity of raw materials. Deep-sea mining has been spurred by the need for critical resources to support growing populations, urbanization, high-tech applications and the development of a green energy economy. Nevertheless, an improved understanding of how mining...review 2022
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Deng, Zhirui (author), Huang, Dong (author), He, Qing (author), Chassagne, C. (author)Sediment is found throughout the world’s alluvial plain rivers, estuarine coasts and adjacent seas and is thereby a key factor in major ecosystems. Suspended mineral sediment can affect the biological activity of microorganisms and plants, by reducing light penetration in the water column or by binding to organic matter. Biological processes...review 2022
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Li, Ji (author), Hao, Xiaodi (author), Gan, W. (author), van Loosdrecht, Mark C.M. (author), Wu, Yuanyuan (author)Alginate like extracellular polymers (ALE) recovered from flocculent sludge has been identified as a kind of highly valuable biomaterials. However, the extraction protocols limit the production of biopolymers as ALE extracted from flocculent sludge is at a lower level, around 90–190 mg/g VSS. Under this circumstance, the eco-friendly and...journal article 2022
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Bicudo, Bruno (author), Van Der Werff, Bart Jan (author), Medema, G.J. (author), van Halem, D. (author)Electrochemical water treatment is gaining increasing popularity due to its wide range of potential applications, its decreasing costs, and its suitability as a decentralized treatment alternative, but mainly due to it being considered a "green technology". In the field of municipal wastewater treatment, the use of iron electrocoagulation (Fe...journal article 2022
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Li, Ji (author), Hao, Xiaodi (author), Gan, Wei (author), van Loosdrecht, Mark C.M. (author), Wu, Yuanyuan (author)Alginate like extracellular polymers (ALE) recovered from excess sludge have been evaluated as an eco-friendly, cost effective and sustainable alternative to highly valued materials. However, the ALE extraction from flocculent sludge ranges normally from 90 to 190 mg/g VSS, which is only equivalent to the lowest edge of the ALE production...journal article 2022