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Kruiswijk, Anouk (author), Sande, MAJ van de (author), Verhoef, Cornelis (author), Schrage, Yvonne M. (author), Haas, Rick L (author), Bemelmans, Marc H. A. (author), van Ginkel, Robert J. (author), Bonenkamp, Johannes J. (author), Witkamp, Arjen J. (author), van den Akker-van Marle, M. Elske (author), Marang-van de Mheen, P.J. (author), van Bodegom-Vos, Leti (author)Introduction: Changes in health-related quality of life (HRQoL) during the diagnostic and treatment trajectory of high-grade extremity soft-tissue sarcoma (eSTS) has rarely been investigated for adults (18–65 y) and the elderly (aged ≥65 y), despite a potential variation in challenges from diverse levels of physical, social, or work-related...journal article 2024
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Belloni, C. (author), Korving, L. (author), Witkamp, G.J. (author), Brück, E.H. (author), Dugulan, A.I. (author)Iron oxide-based adsorbents showed potential to reach ultra-low phosphorus (P) concentrations to prevent eutrophication and recover P. High affinity, high capacity at low P concentrations (<1 mg L<sup>−1</sup>), good stability, and reusability of the adsorbent are key factors for economic viability. In this study, nanoparticles of goethite...journal article 2024
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Supportive interventions for family caregivers of patients with advanced cancer: A systematic reviewBecqué, Yvonne N. (author), van der Wel, Maaike (author), Aktan-Arslan, Muzeyyen (author), Driel, Anne Geert van (author), Rietjens, J.A.C. (author), van der Heide, Agnes (author), Witkamp, Erica (author)Objective: Family caregivers are often intensively involved in palliative and end-of-life cancer care. A variety of interventions to support family caregivers have been developed, differing in target population, modality, and components. We aimed to systematically examine characteristics and the effectiveness of interventions to support...review 2023
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Belloni, C. (author), Korving, L. (author), Witkamp, G.J. (author), Brück, E.H. (author), Dugulan, A.I. (author)Phosphorus (P) removal from freshwater bodies to ultra-low concentrations is fundamental to prevent eutrophication, while its recovery is necessary to close the P usage cycle. Iron oxide-based adsorbents seem promising candidates, being abundant, cheap, and easy to synthesize compounds, with good affinity for P. Affinity is the key parameter...journal article 2023
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Belloni, C. (author), Korving, L. (author), Witkamp, G. J. (author), Brück, E.H. (author), de Jager, P. (author), Dugulan, A.I. (author)Hybrid anion exchange adsorbents (HAIX) seem promising to prevent eutrophication and recover phosphate (P). HAIX consist of an anion exchange resin (AIX) backbone, promoting anion physisorption (outer-sphere complex), impregnated with iron (hydr)oxide nanoparticles (NPs), for selective P chemisorption (inner-sphere complex). In this work, for...journal article 2023
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Haidari, A.H. (author), Witkamp, G. J. (author), Heijman, Sebastiaan (author)Silica scaling is one of the major scaling challenges in Reverse Osmosis (RO). The safe operation practice is to keep the silica concentration below 150 mg/L in RO concentrate. This study addresses the effects of divalent cations such as calcium and magnesium on silica scaling in a seawater RO installation used as a pretreatment to Eutectic...journal article 2022
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Torres Serrano, V.M. (author), Eshun, Lordina Ekua (author), Farinha, Andreia (author), Witkamp, Geert Jan (author), Bucs, Szilard (author)In this study, the efficiency of electrocoagulation (EC) with iron electrodes was applied to remove two phosphonates, 1-hydroxyethylidene-1, 1-diphosphonic acid (HEDP) and nitrilotris(methylene) triphosphonic acid (NTMP) from concentrates. This work provides a detailed description of the experimental procedure and results on phosphonate...journal article 2022
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Blankert, Bastiaan (author), Vrouwenvelder, J.S. (author), Witkamp, Geert Jan (author), Ghaffour, Noreddine (author)In this study, we analyzed the heat requirement of membrane distillation (MD) to investigate the trade-off between the evaporation efficiency and driving force efficiency in a single effect MD system. We found that there exists a non-zero net driving temperature difference that maximizes efficiency. This is the minimum net driving temperature...journal article 2020
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Wilfert, P.K. (author), Meerdink, J. (author), Degaga, B. (author), Temmink, H. (author), Korving, L. (author), Witkamp, G.J. (author), Goubitz, K. (author), van Loosdrecht, Mark C.M. (author)Sulfide is frequently suggested as a tool to release and recover phosphate from iron phosphate rich waste streams, such as sewage sludge, although systematic studies on mechanisms and efficiencies are missing. Batch experiments were conducted with different synthetic iron phosphates (purchased Fe(III)P, Fe(III)P synthesized in the lab and...journal article 2020
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Pinel, I.S.M. (author), Kim, Lan Hee (author), Proença Borges, Vitor R. (author), Farhat, Nadia M. (author), Witkamp, Geert Jan (author), van Loosdrecht, Mark C.M. (author), Vrouwenvelder, J.S. (author)Phosphate limitation has been suggested as a preventive method against biofilms. P-limited feed water was studied as a preventive strategy against biofouling in cooling towers (CTs). Three pilot-scale open recirculating CTs were operated in parallel for five weeks. RO permeate was fed to the CTs (1) without supplementation (reference), (2)...journal article 2020
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Suresh Kumar, P. (author), Korving, Leon (author), van Loosdrecht, Mark C.M. (author), Witkamp, G.J. (author)Eutrophication and the resulting formation of harmful algal blooms (HAB) causes huge economic and environmental damages. Phosphorus (P) from sewage effluent and agricultural run-off has been identified as a major cause for eutrophication. Phosphorous concentrations greater than 100 μg P/L are usually considered high enough to cause...review 2019
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Sanawar, Huma (author), Bucs, Szilárd S. (author), Pot, Martin A. (author), Zlopasa, J. (author), Farhat, Nadia M. (author), Witkamp, Geert Jan (author), Kruithof, Joop C. (author), van Loosdrecht, Mark C.M. (author), Vrouwenvelder, J.S. (author)Routine chemical cleaning with the combined use of sodium hydroxide (NaOH) and hydrochloric acid (HCl) is carried out as a means of biofouling control in reverse osmosis (RO) membranes. The novelty of the research presented herein is in the application of urea, instead of NaOH, as a chemical cleaning agent to full-scale spiral-wound RO...journal article 2019
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Yu, M. (author), Picanço Castanheira Da Silva, T. (author), van Opstal, A.W.M. (author), Romeijn, Stefan (author), Every, H.A. (author), Jiskoot, Wim (author), Witkamp, G.J. (author), Ottens, M. (author)In this study, we developed a microfluidics method, using a so-called H-cell microfluidics device, for the determination of protein diffusion coefficients at different concentrations, pHs, ionic strengths, and solvent viscosities. Protein transfer takes place in the H-cell channels between two laminarly flowing streams with each containing a...journal article 2019
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Suresh Kumar, P. (author), Korving, Leon (author), Keesman, Karel J. (author), van Loosdrecht, Mark C.M. (author), Witkamp, G.J. (author)Phosphate is a vital nutrient but its presence in surface waters even at very low concentrations can lead to eutrophication. Adsorption is often suggested as a step for reducing phosphate down to very low concentrations. Porous metal oxides can be used as granular adsorbents that have a high surface area and hence a high adsorption capacity....journal article 2019
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Prot, T.J.F. (author), Nguyen, V. H. (author), Wilfert, P.K. (author), Dugulan, A.I. (author), Goubitz, K. (author), de Ridder, D.J. (author), Korving, L. (author), Rem, P.C. (author), Bouderbala, A. (author), Witkamp, G.J. (author), van Loosdrecht, Mark C.M. (author)To prevent eutrophication of surface water, phosphate needs to be removed from sewage. Iron (Fe) dosing is commonly used to achieve this goal either as the main strategy or in support of biological removal. Vivianite (Fe(II) <sub>3</sub> (PO <sub>4</sub> ) <sub>2</sub> * 8H <sub>2</sub> O) plays a crucial role in capturing the phosphate, and...journal article 2019
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Sakes, A. (author), Snaar, Kevin (author), Smit, G. (author), Witkamp, Arjen J. (author), Breedveld, P. (author)Background. The majority of the benign and malignant lesions in the breast arise from the ductal epithelium and terminal ductlobular unit. A minimally invasive procedure called ductoscopy is able to visualize these lesions as it inspects the ductal epithelium using a small micro-endoscope. Unfortunately, it is currently challenging to obtain...journal article 2018
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Suresh Kumar, P. (author), Ejerssa, Wondesen Workneh (author), Wegener, Carita Clarissa (author), Korving, Leon (author), Dugulan, A.I. (author), Temmink, Hardy (author), van Loosdrecht, Mark C.M. (author), Witkamp, G.J. (author)Phosphate is a vital nutrient for life but its discharge from wastewater effluents can lead to eutrophication. Adsorption can be used as effluent polishing step to reduce phosphate to very low concentrations. Adsorbent reusability is an important parameter to make the adsorption process economically feasible. This implies that the adsorbent...journal article 2018
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Sanawar, H. (author), Pinel, I.S.M. (author), Farhat, N. M. (author), Bucs, Sz S. (author), Zlopasa, J. (author), Kruithof, J. C. (author), Witkamp, G.J. (author), van Loosdrecht, Mark C.M. (author), Vrouwenvelder, J.S. (author)Chemical cleaning is routinely performed in reverse osmosis (RO) plants for the regeneration of RO membranes that suffer from biofouling problems. The potential of urea as a chaotropic agent to enhance the solubilization of biofilm proteins has been reported briefly in the literature. In this paper the efficiency of urea cleaning for RO...journal article 2018
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Suresh Kumar, P. (author), Prot, T.J.F. (author), Korving, Leon (author), Keesman, Karel J. (author), Dugulan, A.I. (author), van Loosdrecht, Mark C.M. (author), Witkamp, G.J. (author)Adsorption is often suggested for to reach very low phosphate levels in municipal wastewater effluent and even to recover phosphate. Adsorbent performance is usually associated with surface area but the exact role of the pore size distribution (PSD) is unclear. Here, we show the effect of the PSD on phosphate adsorption. Granular activated...journal article 2017
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Wilfert, P.K. (author), Mandalidis, A. (author), Dugulan, A.I. (author), Goubitz, K. (author), Korving, L. (author), Temmink, H. (author), Witkamp, G.J. (author), van Loosdrecht, Mark C.M. (author)Iron is an important element for modern sewage treatment, inter alia to remove phosphorus from sewage. However, phosphorus recovery from iron phosphorus containing sewage sludge, without incineration, is not yet economical. We believe, increasing the knowledge about iron-phosphorus speciation in sewage sludge can help to identify new routes...journal article 2016