Fouling studies on hydrophobic PVDF-bentonite hollow fiber membrane during membrane distillation of palm oil mill effluent

Muhamad, N.A.S.; Mokhtar, Nadzirah Mohd; Lau, Woei Jye; Ismail, A.F.; Naim, R.

doi:10.1016/j.jwpe.2022.102969

Cited by 17 publications

(8 citation statements)

References 36 publications

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“…As a high-efficiency separation technology, a continuous MD process would also inevitably suffer from the membrane fouling mainly caused by inorganic salt crystallization. 41,42 The underground water sample selected in this study contains certain concentrations of organic matter, SS, inorganic salts, and other impurities. Long-term operation leads to an increase in the concentration of these pollutants on the membrane surface, which would in turn lead to a decrease in water flux.…”

Section: Resultsmentioning

confidence: 99%

Efficient purification of high-salt rural groundwater in the areas along the Yellow River in Henan Province, China, by hollow fiber membrane distillation process

Li,

Fan

et al. 2023

Textile Research Journal

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The vast rural drinking water sources along the Yellow River basin in Henan Province mainly come from the local high-salinity groundwater, which cannot be directly drunk. Zeolitic imidazolate framework-71/polyvinylidene fluoride hollow fiber composite membrane was applied to treat rural groundwater through membrane distillation technology. The variations of water quality parameters from 12 different rural regions after membrane distillation treatment were well analyzed and compared. Membrane separation performance for water samples from different regions during the membrane distillation process was investigated, including water flux and salt rejection. During a continuous 24-h membrane distillation process for the treatment of these water samples, hollow fiber membrane exhibits high solute retention rates (>99%) for salt ions, suspended solids and total dissolved solids, which are within the limits of national standards (GB 5749-2006), meanwhile membrane permeation water flux can remain stable. After the acid-cleaning for 180 min, all hollow fiber membranes can recover water flux well with a flux recovery rate above 98%. Even if the concentration ratio continued to increase, the water production rate of membrane distillation was basically maintained between 50% and 60%, which was obviously higher than the 30% of the reverse osmosis process. The economic analysis confirmed that the water production cost varied between US$0.45 and US$0.29/m3. With the extension of membrane service life, the specific membrane cost decreased rapidly in the first 6 years and then leveled off. The proposed vacuum membrane distillation process proved to be a promising water purification method for treating rural high-salinity groundwater.

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Section: Resultsmentioning

confidence: 99%

Efficient purification of high-salt rural groundwater in the areas along the Yellow River in Henan Province, China, by hollow fiber membrane distillation process

Li,

Fan

et al. 2023

Textile Research Journal

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“…Muhamad et al reported that nanoscale surface roughness has a signi cant effect on contact angles as a result of their work with PVDF-bentonite hollow ber [40]. Wang et al also found that the rougher the hydrophobic calcite surface, the more hydrophobic it is [41].…”

Section: Surface Topography and Average Roughness Valuesmentioning

confidence: 99%

Preparation of superhydrophobic coating with excellent abrasion resistance and anti-icing properties using Al2O3/PVDF composites with different Al2O3 particle sizes

Samsun

Alkan

Basaran

et al. 2023

Preprint

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Considering the application areas of ceramic materials (ceramic sinks, toilet bowls, washing areas, ceramic tiles tableware), the demand for improving dirt and water repellent properties is increasing day by day with the perception of hygiene and cleanliness that affects the whole world. In this study, super-hydrophobic solutions were prepared and applied to ceramic substrates by adding alumina particles with different particle size distributions into the polyvinylidene fluoride (PVDF) matrix. Alumina powders added to the PVDF matrix at four different rates to obtain composite materails. Alumina powders with two different particle sizes, coarse and fine, was used and the effect of grain size on the properties was investigated. The adhesion performance of the coatings was determined by brush tests. In addition, surface roughness values, colour variation after coating, and anti-icing performance were also evaluated. It was observed that the coating with the (PVDF:Al2O3) ratio (1:0.25) had the highest contact angle and adhesion property.

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Section: Overview Of Membrane-based Filtration Processes Limitations ...mentioning

confidence: 99%

“…Membrane fouling can also be recognized in different forms, as shown in Figure 3 [54,55]. Nanofiltration and reverse osmosis membranes are characterized by smaller pores and are mainly affected by external fouling; meanwhile, membranes with larger pores are more interested in internal fouling [56,57]. One of the advantages of using hybrid blend polymers stands in the opportunity to employ proper antifouling additives as membrane coating or as functional antifouling/antibacterial fillers to add to the blend gel mixture before the drying process [51].…”

Section: Overview Of Membrane-based Filtration Processes Limitations ...mentioning

confidence: 99%

Development of Functional Hybrid Polymers and Gel Materials for Sustainable Membrane-Based Water Treatment Technology: How to Combine Greener and Cleaner Approaches

Rando

Sfameni

Plutino

2022

Gels

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Water quality and disposability are among the main challenges that governments and societies will outside during the next years due to their close relationship to population growth and urbanization and their direct influence on the environment and socio-economic development. Potable water suitable for human consumption is a key resource that, unfortunately, is strongly limited by anthropogenic pollution and climate change. In this regard, new groups of compounds, referred to as emerging contaminants, represent a risk to human health and living species; they have already been identified in water bodies as a result of increased industrialization. Pesticides, cosmetics, personal care products, pharmaceuticals, organic dyes, and other man-made chemicals indispensable for modern society are among the emerging pollutants of difficult remediation by traditional methods of wastewater treatment. However, the majority of the currently used waste management and remediation techniques require significant amounts of energy and chemicals, which can themselves be sources of secondary pollution. Therefore, this review reported newly advanced, efficient, and sustainable techniques and approaches for water purification. In particular, new advancements in sustainable membrane-based filtration technologies are discussed, together with their modification through a rational safe-by-design to modulate their hydrophilicity, porosity, surface characteristics, and adsorption performances. Thus, their preparation by the use of biopolymer-based gels is described, as well as their blending with functional cross-linkers or nanofillers or by advanced and innovative approaches, such as electrospinning.

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Fouling studies on hydrophobic PVDF-bentonite hollow fiber membrane during membrane distillation of palm oil mill effluent

Cited by 17 publications

References 36 publications

Efficient purification of high-salt rural groundwater in the areas along the Yellow River in Henan Province, China, by hollow fiber membrane distillation process

Efficient purification of high-salt rural groundwater in the areas along the Yellow River in Henan Province, China, by hollow fiber membrane distillation process

Preparation of superhydrophobic coating with excellent abrasion resistance and anti-icing properties using Al2O3/PVDF composites with different Al2O3 particle sizes

Development of Functional Hybrid Polymers and Gel Materials for Sustainable Membrane-Based Water Treatment Technology: How to Combine Greener and Cleaner Approaches

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