Zero-valent iron impregnated cellulose acetate mixed matrix membranes for the treatment of textile industry effluent

Saranya, R.; Arthanareeswaran, G.; Ismail, Ahmad Fauzi; Dionysiou, Dionysios D.; Paul, Diby

doi:10.1039/c5ra06948c

Cited by 22 publications

(7 citation statements)

References 46 publications

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“…Iron based nanoparticles are capable of providing enhanced hydrophilicity and also aid in enlargement of pores on the membrane [25]. Due to its high hydrophilicity, the drawback of low flux by pristine PES and CA membranes can be alleviated by employing iron oxide nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Iron oxide modified polyethersulfone/cellulose acetate blend membrane for enhanced defluoridation application

Evangeline

Pragasam²,

Rambabu³

et al. 2019

DWT

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Fluoride removal in drinking water is usually performed through cost and energy intensive membrane techniques such as reverse osmosis, dialysis and electro-dialysis. Defluoridation using an effective and low cost ultra filtration membrane system is reported in this work. Iron (III) oxide (Fe 2 O 3) nanoparticles modified polyethersulfone (PES)/cellulose acetate (CA) blend membranes were fabricated by phase inversion method. Composite membranes were prepared by incorporating incremental amounts of Fe 2 O 3 nanoparticles. Synthesized membranes were analysed for morphological studies and ultra filtration characteristics. It was observed that the inclusion of iron oxide nanoparticles influenced the membrane structure resulting in enhanced ultra filtration properties. All of the iron oxide nanoparticles incorporated PES/CA membranes possessed increased hydrophilicity, porosity, water uptake and pure water flux as compared to pristine PES membrane. Membrane with 0.5 wt% Fe 2 O 3 nanoparticles exhibited a maximum water flux of 156 L m-2 h-1. Fluoride removal performance confirmed the defluoridation potential of the Fe 2 O 3 nanoparticles blended PES/CA membranes. Maximum fluoride removal efficiency of 70.3% was observed for a single ultra filtration run. SEM and AFM examinations showed the structural alterations in the composite membranes due to the nanoparticles addition. Reusability studies confirmed the enhanced durability of the blended membrane. Domestic application of the composite membrane was carried out by assessing its fluoride removal ability in natural water samples obtained from fluoride endemic area.

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Section: Introductionmentioning

confidence: 99%

Iron oxide modified polyethersulfone/cellulose acetate blend membrane for enhanced defluoridation application

Evangeline

Pragasam²,

Rambabu³

et al. 2019

DWT

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“…Cellulose acetate (CA), dimethylformamide (DMF), dimethylacetamide (DMAc) were purchased from Merck (Darmstadt, Germany). The concentration variation of cellulose acetate, M. oleifera powder and solvents are modified from Saranya et al [22] and full factorial design of experiment were used and summarized in Table 1. Each treatment was repeated three times.…”

Section: Methodsmentioning

confidence: 99%

High-Throughput Microfiltration Membranes with Natural Biofouling Reducer Agent for Food Processing

et al. 2018

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The effect of natural antibiotics Moringa oleifera seeds powder in cellulose acetate membranes as biofouling reducer agent was investigated. Mixed matrix membranes (MMM) were synthesized by adding 100 mesh M. oleifera seeds powder with variation of three concentrations (1 wt%, 2 wt%, and 3 wt%), into a mix polymer solution of CA (cellulose acetate) and two different solvents, i.e., DMF (dimethylformamide) and DMAc (dimethylacetamide). The synthesized membranes morphology was observed under scanning electron microscopy and from the images can be seen that the membranes made of DMAc formed rather large macrovoid as compared to DMF-based membranes. The microstructure affected the water flux through the membranes, in which the DMAc membranes provided a higher flux value and served as high-throughput microfiltration membranes. Antibacterial properties of MMM were tested using Escherichia coli adhesion onto membrane surfaces. The results showed that M. oleifera has been proven to eradicate E. coli activity on the membrane surfaces due to interaction between bacterial cells and phenolic compounds from M. oleifera, through absorption processes involving hydrogen bonds. two or more different properties of components combined, to achieve a better separation performance. In order to promote antifouling properties, some combination of functionalized fillers and polymer matrixes have been used, such as a combination of nanoparticles of anatase TiO 2 /polysulfone [10] and Ag-loaded graphene oxide/polyethersulfone [11]. Those combination were effective, however the use of metal components as fillers, e.g., silver particles, might be unsafe for membrane that is used for food processing application. The use of plant-based subtances, might provide a more reliable and safe anti-biofoulant, such as the utilization of cardanol [12]. In this study, a natural antibacterial M. oleifera seeds powder is evaluated to be employed as filler to the cellulose acetate polymer matrix to form anti-biofouling MMM.M. oleifera could be utilized against Gram positive and negative bacteria [13]. Recombinant protein inside M. oleifera seeds is able to agglomerate Gram positive and negative bacterial cells [14]. By its properties, Moringa seeds could potentially be used as for environmentally friendly antibiofouling, because these natural ingredients are not harmful, even if used in large quantities when compared with chemicals or metals that are commonly used as agents to reduce biofouling.As for polymeric matrix, cellulose acetate has been chosen due to some beneficial properties. Cellulose acetate has good properties as a membrane polymer for food processing due to renewable, biodegradable, biocompatible, non-toxic, and inexpensive subtances [15,16]. Cellulose acetate has relatively thermal and chemical stability [17], because cellulose has a rich of hydroxyl groups and it is able to form a strong hydrogen bonds that could not be separated easily [18]. Cellulose acetate are also extraordinary hydrophilic, which can be used for minimizing fouling on t...

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“…Nanoparticles have attracted to the amendment of asymmetric mixed matrix membranes with various methods. Using phase inversion processes to fabricate the asymmetric membranes [37], various researchers directly mixed/blended the prepared nanoparticles into the membrane casting solution [5,7,15,53,65,67]. The addition of inorganic nanoparticle enhances the hydrophilic and permeability rates of the membranes and shows antimicrobial activity [41,61,66].…”

Section: Introductionmentioning

confidence: 99%

“…Zinc oxide nanoparticles play an important role in antimicrobial, anti-fungal properties and biofouling [17,21,51,56] and nanoparticles are characterized by XRD and SEM [36]. CA/ ZnO asymmetric mixed matrix membranes are synthesized using the phase inversion technique [43,53,59] and performance analyses of the CA/ZnO membranes like pure water flux, hydraulic permeability, and removal efficiency were analyzed [59].…”

Section: Introductionmentioning

confidence: 99%

Studies on removal of arsenic using cellulose acetate–zinc oxide nanoparticle mixed matrix membrane

et al. 2018

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Mixed matrix membranes prepared by varying compositions of Cellulose acetate, acetone and formamide for the synthesis of ultrafiltration/nanofiltration membranes with and without nanoparticles for the removal of arsenic from synthetic solution. Zinc oxide nanoparticles were synthesized by an in situ ultrasonic technique and characterization done using XRD and SEM. In the current study, batch experiments were conducted to characterize the maximum removal efficiency of arsenic by cellulose acetate-ZnO mixed matrix membrane. It was found that 58.77% of arsenic removal was obtained for the feed concentration of 1000 mg/L and pH range 6.8 ± 0.6. The nanoparticle-embedded membranes show higher removal efficiency, high flux and permeation rate than cellulose acetate membranes without embedded nanoparticles.

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Zero-valent iron impregnated cellulose acetate mixed matrix membranes for the treatment of textile industry effluent

Cited by 22 publications

References 46 publications

Iron oxide modified polyethersulfone/cellulose acetate blend membrane for enhanced defluoridation application

Iron oxide modified polyethersulfone/cellulose acetate blend membrane for enhanced defluoridation application

High-Throughput Microfiltration Membranes with Natural Biofouling Reducer Agent for Food Processing

Studies on removal of arsenic using cellulose acetate–zinc oxide nanoparticle mixed matrix membrane

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