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Effect of Long-Term Sodium Hypochlorite Cleaning on Silicon Carbide Ultrafiltration Membranes Prepared via Low-Pressure Chemical Vapor Deposition

Jan, A. (author), Chen, M. (author), Nijboer, Michiel (author), Luiten-Olieman, Mieke W.J. (author), Rietveld, L.C. (author), Heijman, Sebastiaan (author)

Sodium hypochlorite (NaClO) is widely used for the chemical cleaning of fouled ultrafiltration (UF) membranes. Various studies performed on polymeric membranes demonstrate that long-term (>100 h) exposure to NaClO deteriorates the physicochemical properties of the membranes, leading to reduced performance and service life. However, the effect...

journal article 2024

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Catalytic pre-coat on ceramic nanofiltration membranes for segregation and Fenton cleaning of high-resistance colloids in direct surface water treatment

Lin, B. (author), Heijman, Sebastiaan (author), Rietveld, L.C. (author)

Ceramic nanofiltration (NF) is a promising alternative for direct surface water treatment, but is hampered for full-scale applications by fouling and a lack of eco-friendly cleaning regimes. In this work, an innovative reactive pre-coat layer, consisting of an iron oxychloride catalyst, was constructed on top of commercial ceramic NF...

journal article 2024

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Ceramic membrane filtration for oily wastewater treatment: Basics, membrane fouling and fouling control

Chen, M. (author), Heijman, Sebastiaan (author), Rietveld, L.C. (author)

Membrane technology presents an effective solution for treating oily wastewater, a significant environmental hazard stemming from industries such as food processing, metalworking, and oil extraction. Compared to polymeric membranes, ceramic ones exhibit superior mechanical, chemical, and thermal stability, enabling more effective oil removal...

review 2024

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Concentration polarizations of PEG and silica colloids in ceramic nanofiltration

Zhang, S. (author), Liang, Yaxin (author), Yang, Cai (author), Venema, Paul (author), Rietveld, L.C. (author), Heijman, Sebastiaan (author)

A large decrease in permeability is often observed during the filtration of nano-sized colloids, while fouling is widely regarded as the main explanation for this phenomenon. The osmotic pressure or concentration polarization (CP) of colloids can also contribute to the flux decline. However, the contribution of CP to flux loss cannot be...

journal article 2024

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Chemical vapor deposition of silicon carbide on alumina ultrafiltration membranes for filtration of microemulsions

Qin, G. (author), Jan, A. (author), An, Q. (author), Zhou, H. (author), Rietveld, L.C. (author), Heijman, Sebastiaan (author)

Worldwide, a considerable amount of oily wastewater is generated, with oil droplets from 2 to 200 nm that are difficult to separate because of their size and colloidal stability. This study presents a novel approach for effectively separating microemulsions via cubic silicon carbide (3C-SiC)-coated alumina (Al ₂O ₃)...

journal article 2024

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Operation and performance analysis of direct hollow fiber nanofiltration: A pilot study at IJsselmeer

Ophorst, M. (author), Grooth, Joris de (author), Heijman, Sebastiaan (author), Vaudevire, Elisabeth M.H. (author), Jafari, Morez (author)

This study investigated the performance of direct hollow fiber nanofiltration (dNF40) membranes from NX Filtration BV on a pilot scale for the treatment of pre-treated IJsselmeer water from Waterwinstation Prinses Juliana (WPJ) in Andijk, as well as the direct treatment of raw IJsselmeer water. The objective was to evaluate the long-term...

journal article 2024

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Verwijdering van organische microverontreinigingen uit huishoudelijk afvalwater met AdOx

van der Hoek, J.P. (author), Fausta, N. (author), Fu, Mingyan (author), Heijman, Sebastiaan (author), Rietveld, L.C. (author)

Verwijdering van organische microverontreinigingen uit huishoudelijk afvalwater, waaronder medicijnresten, staat sterk in de belangstelling om de oppervlaktewater kwaliteit te verbeteren, de drinkwaterbronnen te beschermen en te voldoen aan toekomstige EU richtlijnen. In minder dan vijf jaar is AdOx, een technologie waarin adsorptie en oxidatie...

journal article 2023

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Adsorption and cake layer fouling in relation to Fenton cleaning of ceramic nanofiltration membranes

Lin, B. (author), Rietveld, L.C. (author), Yao, Lu (author), Heijman, Sebastiaan (author)

Catalytic ceramic nanofiltration (NF) is a promising technology for direct wastewater reclamation, given its high separation selectivity and reactive surfaces for oxidative removal of fouling. A better understanding of the relation between fouling types and oxidative cleaning efficacy under high organic loading conditions is of practical...

journal article 2023

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Removal of organic micropollutants from wastewater effluent: Selective adsorption by a fixed-bed granular zeolite filter followed by in-situ ozone-based regeneration

Fu, Mingyan (author), Heijman, Sebastiaan (author), van der Hoek, J.P. (author)

Organic micropollutants (OMPs) that occur in the aquatic environment are an emerging concern. Adsorption by granular zeolites and regenerating exhausted zeolites by gaseous ozone is an innovative and advanced treatment technology for removing OMPs from wastewater treatment plant (WWTP) effluent. In this study, WWTP effluent spiked with eleven...

journal article 2022

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High silica concentration in RO concentrate

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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Oil-in-water emulsion separation: Fouling of alumina membranes with and without a silicon carbide deposition in constant flux filtration mode

Chen, M. (author), Heijman, Sebastiaan (author), Luiten-Olieman, Mieke W.J. (author), Rietveld, L.C. (author)

Ceramic membranes have drawn increasing attention in oily wastewater treatment as an alternative to their traditional polymeric counterparts, yet persistent membrane fouling is still one of the largest challenges. Particularly, little is known about ceramic membrane fouling by oil-in-water (O/W) emulsions in constant flux filtration modes. In...

journal article 2022

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AdOx verwijdert medicijnresten

van der Hoek, J.P. (author), Heijman, Sebastiaan (author), Fu, Mingyan (author), Jiang, N. (author), Rietveld, L.C. (author), Doekhi-Bennani, Y. (author)

AdOx is een combinatie van een adsorptieproces en een oxidatietechniek. Een veelbelovende technologie om medicijnresten uit afvalwater te halen. En winnaar van<br/>de Waterinnovatieprijs 2021, categorie Gezond Water en Gezonde Bodem.

journal article 2022

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Experimental and density functional theory studies of laminar double-oxidized graphene oxide nanofiltration membranes

Valizadeh, Solmaz (author), Naji, Leila (author), Karimi, Mohammad (author), Sarabadani Tafreshi, Saeedeh (author), Heijman, Sebastiaan (author), de Leeuw, Nora H. (author)

The type and loading level of oxygen-containing functional groups on graphene oxide (GO) nanosheets significantly affect the size and alignment of nanochannels formed between the GO nanosheets and the separation performance of laminar GO membranes. Here, we demonstrate how double-oxidation of GO leads to the higher surface charge of GO...

journal article 2022

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Characterization of natural organic matter in South African drinking water treatment plants: Towards integrating ceramic membrane filtration

Moyo, Welldone (author), Motsa, Machawe M. (author), Chaukura, Nhamo (author), Msagati, Titus A.M. (author), Mamba, Bhekie B. (author), Heijman, Sebastiaan (author), Nkambule, Thabo T.I. (author)

This work presents the first comprehensive investigation of natural organic matter (NOM) fraction removal using ceramic membranes in South Africa. The rate of removal of bulk NOM (measured as UV₂₅₄ and DOC % removal), the biodegradable dissolved organic carbon (BDOC) fraction, polarity-based fractions, and fluorescent dissolved...

journal article 2022

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Modeling the antifouling properties of atomic layer deposition surface-modified ceramic nanofiltration membranes

Moyo, Welldone (author), Chaukuraa, Nhamo (author), Motsaa, Machawe M. (author), Msagatia, Titus A.M. (author), Mambab, Bhekie B. (author), Heijman, Sebastiaan (author), Nkambulea, Thabo T.I. (author)

This work investigates the enhancement of antifouling properties of ceramic nanofiltration membranes by surface modification via atomic layer deposition (ALD) of TiO₂. Feed solutions containing bovine serum albumin (BSA), humic acid (HA) and sodium alginate (SA) were used as model foulants. The classic fouling mechanism models and...

journal article 2022

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Softening with Ceramic Micro-Filtration for Application on Water Reclamation for Industrial Recirculating Cooling Systems

Gulamussen, N.J. (author), Donse, D. (author), Marques Arsenio, A. (author), Heijman, Sebastiaan (author), Rietveld, L.C. (author)

There is a global need for optimizing the use of water that has resulted from increased demand due to industrial development, population growth, climate change and the pollution of natural water resources. One of the solutions is to use reclaimed water in industrial applications that do not require water of potable quality, such as cooling water...

journal article 2022

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State-of-the-Art Ceramic Membranes for Oily Wastewater Treatment: Modification and Application

Chen, M. (author), Heijman, Sebastiaan (author), Rietveld, L.C. (author)

Membrane filtration is considered to be one of the most promising methods for oily wastewater treatment. Because of their hydrophilic surface, ceramic membranes show less fouling compared with their polymeric counterparts. Membrane fouling, however, is an inevitable phenomenon in the filtration process, leading to higher energy consumption and a...

review 2021

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Integration of Wind Energy and Desalination Systems: A Review Study

Greco, F. (author), Heijman, Sebastiaan (author), Jarquin Laguna, A. (author)

Desalination is a well-established technology used all over the world to mitigate freshwater scarcity. Wind-powered reverse osmosis plants are one of the most promising alternatives for renewable energy desalination, particularly for coastal areas and islands. Wind energy can satisfy the high energy consumption of desalination while reducing...

review 2021

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Sulfate precipitation treatment for NOM-rich ion exchange brines

Caltran, I. (author), Ayumurti Kukuh, Floriana (author), Rietveld, L.C. (author), Heijman, Sebastiaan (author)

Ion exchange (IEX) resins can remove natural organic matter (NOM) from drinking water sources. However, the IEX system produces a waste brine rich of sodium, chloride, NOM and sulfate. The treatment of the waste brine aims to recover a clean solution rich of sodium chloride, that can be reused to regenerate IEX resin. Previous research showed...

journal article 2021

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Synthesis and characterization of SnO2 crystalline nanoparticles: A new approach for enhancing the catalytic ozonation of acetaminophen

Rashidashmagh, Fatemeh (author), Doekhi-Bennani, Y. (author), Tizghadam-Ghazani, Mostafa (author), van der Hoek, J.P. (author), Mashayekh-Salehi, Ali (author), Heijman, Sebastiaan (author), Yaghmaeian, Kamyar (author)

A novel sol-gel method was employed in this study to efficiently synthesize SnO2 nanoparticles to catalyze the ozonation of acetaminophen (ACT) from aqueous solutions. The influence of various parameters including Sn source, type of capping and alkaline agents, and calcination temperature on the catalytic activity of the SnO2 preparations was...

journal article 2021