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The Natural In-Between Place for Stress Relief through Biophilic Design

Rietveld, Masja (author)

We humans evolved in nature, but over the years we moved from being a part of nature to being apart from nature. This causes our mental health, with stress as the most important aspect, to suffer from our modern life in the city. A significant challenge we face is finding ways to integrate nature into our build environment for stress relief. A...

master thesis 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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Embedding Fe(0) electrocoagulation in a biologically active As(III) oxidising filter bed

Roy, M. (author), Kraaijeveld, E. (author), Gude, J.C.J. (author), van Genuchten, Case M. (author), Rietveld, L.C. (author), van Halem, D. (author)

Long-term consumption of groundwater containing elevated levels of arsenic (As) can have severe health consequences, including cancer. To effectively remove As, conventional treatment technologies require expensive chemical oxidants to oxidise neutral arsenite (As(III)) in groundwater to negatively charged arsenate (As(V)), which is more...

journal article 2024

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(Micro)Biological Sediment Formation in a Non-Chlorinated Drinking Water Distribution System

Prest, Emmanuelle I. (author), Martijn, Bram J. (author), Rietveld, Matthijs (author), Lin, Y. (author), Schaap, Peter G. (author)

Sediment formation in drinking water distribution systems can lead to brown water at customer taps. Previous studies have shown that sediment formation is closely linked with (micro)biological processes in the distribution system, however the mechanism is not fully understood. Most available studies on discoloration or sediment formation...

journal article 2023

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Performance of a modified and intermittently operated slow sand filter with two different mediums in removing turbidity, ammonia, and phosphate with varying acclimatization periods

Fitriani, Nurina (author), Theresia, Ledy (author), O'Marga, Timothy Tjahja Nugraha (author), Kurniawan, Setyo Budi (author), Supriyanto, Agus (author), Abdullah, Siti Rozaimah Sheikh (author), Rietveld, L.C. (author)

The present study investigated the utilization of blood clam shells as a potential substitute for conventional media, as well as the influence of the acclimation time on the efficacy of an intermittent slow sand filter (ISSF) in the treatment of real domestic wastewater. ISSF was operated with 16 h on and 8 h off, focusing on the parameters...

journal article 2023

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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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Endogeneity in water use behaviour across case studies of household water treatment adoption in developing countries

Daniel, D. (author), Pande, S. (author), Rietveld, L.C. (author)

Endogeneity or reverse causality in regression analysis results in biased estimation of the effects of independent variables on the dependent variable and leads to inaccurate interpretations. However, the biased estimation of the effects of psychological factors on water–related behaviours are rarely discussed. This study investigated the...

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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Sequential Fe²⁺ oxidation to mitigate the inhibiting effect of phosphate and silicate on arsenic removal

Annaduzzaman, M. (author), Rietveld, L.C. (author), Hoque, Bilqis Amin (author), van Halem, D. (author)

Sequential iron (as Fe²⁺) oxidation has been found to yield improved arsenic (as As(III)) uptake than the single-step oxidation. The objective of this study was to gain a better understanding of interactions with phosphate (PO₄³⁻) and silicate (SiO₄²⁻) during sequential Fe²⁺...

journal article 2022

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Groundwater-native Fe(II) oxidation prior to aeration with H₂O₂ to enhance As(III) removal

Roy, M. (author), van Genuchten, Case M. (author), Rietveld, L.C. (author), van Halem, D. (author)

Groundwater contaminated with arsenic (As) must be treated prior to drinking, as human exposure to As at toxic levels can cause various diseases including cancer. Conventional aeration-filtration applied to anaerobic arsenite (As(III)) contaminated groundwater can remove As(III) by co-oxidizing native iron (Fe(II)) and As(III) with oxygen (O...

journal article 2022

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Fluoride removal from water by Ca-Al-CO₃ layered double hydroxides and simultaneous acidification

Wei, L. (author), Zietzschmann, F.E. (author), Rietveld, L.C. (author), van Halem, D. (author)

Millions of people worldwide are exposed to excessive concentrations of fluoride (F⁻) from groundwater sources. Ca-Al-CO₃ layered double hydroxides (LDHs) have shown promising defluoridation efficiency; however, defluoridation by Ca-Al-CO₃ LDHs is highly pH sensitive. This study showed that simultaneous...

journal article 2021

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Use of reclaimed water for unreinforced concrete block production for the self-construction of houses

Gulamussen, N.J. (author), Marques Arsenio, A. (author), Matsinhe, N. P. (author), Manjate, R. S. (author), Rietveld, L.C. (author)

Experiments were conducted to evaluate the possibilities of using treated wastewater for the production of unreinforced concrete blocks. Compressive strength, water absorption and morphology tests of concrete blocks, produced from different makeups of mixing water, drinking water, drinking water spiked with ammonium and phosphate, and the...

journal article 2021

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Socio-Economic and Psychological Determinants for Household Water Treatment Practices in Indigenous–Rural Indonesia

Daniel, D. (author), Pande, S. (author), Rietveld, L.C. (author)

Household water treatment (HWT) is one of the possible technologies to improve the quality of potable water in low–middle-income countries. However, many households still drink untreated water that leads to negative health consequences, highlighting the need for a behavioral study. This study explores the role of eight socio-economic...

journal article 2021

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Water Use Efficiency: A Review of Contextual and Behavioral Factors

Callejas Moncaleano, D.C. (author), Pande, S. (author), Rietveld, L.C. (author)

Water withdrawals around the world have increased almost twice as fast as the population during the last century. Higher than expected water demand is leading to water scarcity and causing rapid depletion of water tables around the world. One reason behind the higher than expected demand is the inefficient use of water. Inefficient use of...

review 2021

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Financial, institutional, environmental, technical, and social (FIETS) aspects of water, sanitation, and hygiene conditions in indigenous - rural Indonesia

Daniel, D. (author), Djohan, Dennis (author), Machairas, Ilias (author), Pande, S. (author), Arifin, Arifin (author), Djono, Trimo Pamudji Al (author), Rietveld, L.C. (author)

Background: There is increasing recognition of the complexity underlying WASH conditions in developing countries. This article explores the complexity by assessing the vulnerability of a specific area to poor WASH conditions using a qualitative approach. Methods: We present our findings for the district of East Sumba in Indonesia. This area...

journal article 2021

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Integrating biological As(III) oxidation with Fe(0) electrocoagulation for arsenic removal from groundwater

Roy, M. (author), van Genuchten, Case M. (author), Rietveld, L.C. (author), van Halem, D. (author)

Arsenic (As) is a toxic element present in many (ground)water sources in the world. Most conventional As removal techniques require pre-oxidation of the neutral arsenite (As(III)) species to the negatively charged arsenate (As(V)) oxyanion to optimize As removal and minimize chemical use. In this work, a novel, continuous-flow As removal...

journal article 2021

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Arsenic removal from iron-containing groundwater by delayed aeration in dual-media sand filters

Annaduzzaman, M. (author), Rietveld, L.C. (author), Amin Hoque, Bilqis (author), Bari, Md Niamul (author), van Halem, D. (author)

Generally, abstracted groundwater is aerated, leading to iron (Fe²⁺) oxidation to Fe³⁺ and precipitation as Fe³⁺-(hydr)oxide (HFO) flocs. This practice of passive groundwater treatment, however, is not considered a barrier for arsenic (As), as removal efficiencies vary widely (15–95%), depending on Fe/As ratio...

journal article 2021

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Adsorption of triclosan, trichlorophenol and phenol by high-silica zeolites: Adsorption efficiencies and mechanisms

Jiang, N. (author), Shang, R. (author), Heijman, Sebastiaan (author), Rietveld, L.C. (author)

High-silica zeolites can be used for adsorption of organic compounds (OCs) from water. The adsorption efficacy could vary with the properties of OCs, as well as the porous and surface features of high-silica zeolites. In this study, the adsorption of triclosan, trichlorophenol (TCP) and phenol by ten high-silica zeolites were investigated. The...

journal article 2020

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Highly permeable silicon carbide-alumina ultrafiltration membranes for oil-in-water filtration produced with low-pressure chemical vapor deposition

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

Silicon carbide (SiC) ceramic membranes are of particular significance for wastewater treatment due to their mechanical strength, chemical stability, and antifouling ability. Currently, the membranes are prepared by SiC-particle sintering at a high temperature. The production suffers from long production time and high costs. In this paper, we...

journal article 2020

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The effect of socio-economic characteristics on the use of household water treatment via psychosocial factors: a mediation analysis

Daniel, D. (author), Pande, S. (author), Rietveld, L.C. (author)

Household water treatment (HWT) can tackle the issue of consuming unsafe drinking water at home. While household socio-economic characteristics are often assumed to influence the psychology of HWT use, no study has rigorously tested such an assumption. We aim to fill the gap by a cross-sectional study in a rural area in Sumba Timur, Indonesia...

journal article 2020