Nazia Rahman

• PhD (Kyushu University)
• Principal Investigator at Bangladesh Atomic Energy Commission

Potato peel powder (PP) was prepared from kitchen wastes and explored in removal of Acid Red 73 (AR 73) dye from leather dyeing effluent. PP was characterized through FTIR, BET, SEM, XRD and EDX analysis. SEM micrographs illustrated rough and porous structure of PP that support the adsorption process. FTIR spectrum exhibited the changes caused by f...

Water pollution caused by chromium released from tannery is a serious concern to the environment and public health. Chromium removal from tannery effluent is a crying need before discharging to the surface water. In this study, acrylic acid-grafted sawdust was prepared by Tectona grandis sawdust grafting with acrylic acid employing gamma irradiatio...

Although copper (Cu) is a very beneficial metal, having too much of it in the body can cause lung issues, severe anemia, nausea, and vomiting. In order to extract Cu (II) ions from aqueous solution, an adsorbent was constructed in this study employing pre-irradiation grafted Ethylene tetrafluoroethylene (ETFE) film. The grafting method was used to...

For many different applications, functional polymeric materials are extremely important in electrochemical reactions. The development of polymer electrolytes, such as those used in fuel cells, depends heavily on these functional materials. One of the most significant sources of power for applications in numerous industries is provided by fuel cells...

Hydrogels are three-dimensional, hydrophilic networks of polymers with a high water absorption capacity. We investigated the removal of monovalent cationic dye, methylene blue, from aqueous solutions by a polyvinyl alcohol/Sodium alginate/Starch mix hydrogel to discover a solution to the environmental waste-water problem. By applying a gamma radiat...

Tea is a highly common beverage worldwide. In addition to other particles, it contains a range of minerals and trace elements. Even though many are necessary for humans, some could be hazardous. Scientists have long been interested in the toxicity of trace metals and how they affect human health. By using Flame Atomic Absorption Spectrophotometer,...

This work describes the investigation of applicability of Sulfonated Glycidylmethacrylate (GMA) grafted non-woven polyethylene (PE) adsorbent for the efficient removal of uranium from aqueous solutions. The adsorbent film was prepared by the gamma radiation (pre-radiation) technique of GMA grafting onto non-woven PE and the epoxide group of GMA con...

Selective isolation of uranium (VI) from wastewater is now a subject of concern due to its damaging effect on living beings. In this study, the pre-irradiation technique was used to prepare grafted polymeric adsorbent by diallyl dimethyl ammonium chloride (DADMAC) and acrylic acid (AAc) onto nonwoven polyethylene fabric (PE) and the grafted adsorbe...

In the present research work, γ-ray initiated grafting of Glycidyl Methacrylate (GMA) on non-woven polyethylene fabrics was followed by amine functionalization. Dependence of amination yield on degree of grafting was investigated. Extensive examinations on the adsorption of anionic dye Methyl Orange (MO) from aqueous solution by the functionalized...

Fabrication of Starch-Acrylic acid-Acrylamide hydrogel were accomplished by the use of gamma rays from Co-60 source at room temperature. The adsorbent were characterized by IR. The prepared absorbent was utilized for absorption of uranium (VI) from aqueous solution. To investigate the effect of adsorption conditions on absorption capacity of the ad...

In this study casting method is used to prepare different composition of chitosan-PVA blend films (thickness 0.16 mm). Optimum composition (chitosan: PVA = 1: 4) of the blend film was selected based on mechanical properties. The tensile strength (TS) and elongation at break (Eb) of the film at this composition was 24 MPa and 20 % respectively. The...

This study focuses on the adsorption of hazardous Cr (III) and Cu (II) ions from aqueous solution by applying modified waste polypropylene (PP) fabric as an adsorbent. Pre-irradiation technique was performed for grafting of sodium styrene sulfonate (SSS) and acrylic acid (AAc) onto the PP fabric. The monomer containing 8% SSS and 16% AAc in water w...

Nuclear and radiological protective materials can be used as protection from ionizing radiations. Gamma rays, X-rays, and alpha and beta particles are some examples of ionizing radiation to which personnel from industry, diagnostic labs, or treatment facilities can be exposed. In different industries, such as mining and milling, medical institution...

In this study, a new amidoximated adsorbent based on waste polypropylene (PP) fabric was prepared for the adsorption of aqueous Cr (VI) metal ions. Pre-irradiation technique was employed for grafting of acrylonitrile (AN) on PP fabric. The grafting reaction was carried out at 80 o C in a water bath for 4 hours utilizing sulfuric acid (2% of AN) as...

Dye removal from industrial effluents is of great importance because of its adverse impact on human beings and the environment. The current study is focused on the adsorption of methylene blue (MB) from an aqueous solution using grafted polypropylene fabric as an adsorbent. The non-oven polypropylene irradiated by 30 kGy radiation was treated (at 8...

Study on the Effect of a Capping Agent on Antimicrobial Activity of Silver Nanoparticles

PE adsorbent

Application of amine-functionalized glycidyl methacrylate grafted non-woven polyethylene fabric in the removal of Cr (VI) Ions from aqueous solution

In present study acrylic acid (AAc) and sodium styrene sulfonate (SSS) were grafted onto non-woven polyethylene fabric using pre-irradiation method and the grafted adsorbent is employed for Cr(III) and Pb(II) adsorption. After irradiation of the non-woven polyethylene fabrics with 50 kGy radiation dose the grafting reaction was carried out at 80º C...

Recent globalization, a competitive atmosphere and quality consciousness have imposed huge attention on the use of different ingenious surface modification methods for the production of textile surfaces with unique properties. Radiation treatment is an advanced method that can effectively modify the surface properties of textiles to improve dye upt...

An environmental affable, economically feasible and reusable sulfonated adsorbent were constructed by gamma radiation grafting of glycidyl methacrylate (GMA) on non-woven polyethylene fabric and subsequent chemical modification. Highest graft yield of 343.31% was obtained at favourable conditions: 30 kGy radiation dose, 5% monomer concentration, ad...

Environmental pollution caused by textile dyeing effluents is a major concern and treatment of dye effluents before their discharge into the environment is essential. In present study acrylic acid and sodium styrene sulfonate grafted non-woven PE fabric were prepared by the application of gamma rays from Co-60 source at room temperature. The new ab...

Nowadays, grafted polymeric composite has received much attention as an alternative adsorbent of heavy metal removal. The grafted polymeric adsorbent (GPA) in the form of composite was prepared using diallyl dimethyl ammonium chloride (DADMAC) and acrylic acid embedded nonwoven irradiated polythene sheet. The prepared GPA was characterized using Fo...

IR analysis of PE fabrics: (a) (b) Fig 2: IR spectra of pristine PE (a), grafted PE (b) Effect of contact time on Cu(II) and Cr(VI) adsorption: Fig 3: Effect of the adsorption time on adsorption capacity of AAc and DADMAC grafted film for heavy metal. (Adsorption experiments-metal ion concentration: 1000ppm ; pH: 4.84 for Cu(II), pH: 1.472 for Cr(V...

Chitosan-PVA Blend Films Modified Using Methyl Methacrylate and Gamma Radiation

Environmental pollution due to heavy metal contamination is a major environmental concern. A fully biodegradable and reusable adsorbent hydrogel for removal of heavy metal ions has been developed. The hydrogel was prepared from acrylic acid and chitosan using an irradiation method. The adsorbent was characterized using Fourier transform infrared an...

Grafting of acrylic acid onto cotton has been performed with radiation processing technology using Co-60 gamma source. The parameters like the influence of radiation dose, acrylic acid concentration and solvent on degree of grafting has been investigated. The degree of grafting was found to depend on radiation dose, acrylic acid concentration and s...

Pre-irradiation method was applied to graft acrylonitrile (AN) onto non-woven polyethylene film. Graft yield reached 130% at 70 kGy radiation dose, 60% monomer concentration and 4 h reaction time when H 2 SO 4 was used as an additive. The modification of AN grafted films with hydroxyl amine hydrochloride was done for the preparation of amidoxime ad...

Pre-irradiation technique was applied to graft acrylonitrile (AN) onto polyethylene film. The graft yield was optimised with respect to radiation dose, monomer concentration and reaction time. H2SO4 was added to the monomer solution to improve the graft yield. The highest graft yield obtained was 120% at 70 kGy radiation dose, 60% monomer concentra...

The amidoxime adsorbent was prepared by radiation grafting of acrylonitrile on non-woven polyethylene followed by chemical treatment with hydroxyl amine hydrochloride. The prepared amidoxime adsorbent was used for adsorption of methyl orange (MO) from aqueous solution. The effect of different conditions such as contact time, pH and initial metal io...

Biodegradable films were prepared from the blend of starch/polyvinyl alcohol (PVA) with 4% (w/w) chitosan of total polymers (starch and PVA) by casting method. The effect of starch/PVA composition (starch/PVA = 30/70, 40/60, 50/50, 60/40) on tensile properties was investigated. It was found that both tensile strength and elongation at break decreas...

The objective of the work is to synthesize pectin-N, N-Dimethylacrylamide (DMAA) hydrogel by gamma radiation without using any initiators and cross-linking agents. Effect of radiation doses on gel fraction and equilibrium swelling as a function of pH were studied, and 5 kGy radiation dose was found to be the optimum dose for hydrogel synthesis. The...

An iminodiacetate (IDA) group containing nonwoven polyethylene (PE) film was prepared by radiation induced graft polymerization of an epoxy group containing monomer, glycidyl methacrylate (GMA) onto nonwoven PE fabric and subsequent chemical modification to IDA group. The effect of solvents (water, methanol, ethanol, isopropyl alcohol and dimethyl...

A novel, regenerative and biodegradable acrylic acid hydrogel having different chitosan composition (w = 0, 0.5, 1.0 and 1.5 %) was constructed using gamma radiation from the Cobalt-60 source. The prepared hydrogel was treated with alkali to enhance its dye adsorption capacity. Uptake capability of the hydrogel at different chitosan percentage, con...

Nowadays quality and suitability of water are of great concern because of various water borne disease and fatal unhealthy impacts on human health. Such concern is one of the reasons of opening of bottled water in Bangladesh. Public belief that bottled water is free from germs and unhealthy entities. As bottled water is marketed by various companies...

In the present study alginate-starch blend films (thickness 0.08 mm) of different composition were prepared by casting and their mechanical properties were studied. Highest tensile strength was obtained for alginate: starch = 4: 1 of 70 MPa. To impart antimicrobial property to the alginate-starch films, citric acid of different composition was used...

The properties of gelatin–polyvinyl alcohol (G–PVA) blend films were improved by methyl methacrylate (MMA) and γ irradiation for practical viewpoint. The films were prepared by casting method and modified by glycerol and MMA monomer and their mechanical properties were studied as well. The gelatin–based films were successfully prepared by using γ i...

Several kinds of acrylic-acid-grafted-starch (starch/AAc) hydrogels were prepared at room temperature (27°C) by applying 5, 10, 15, 20, and 25 kGy of gamma radiation to 15% AAc aqueous solutions containing 5, 7.5, and 15% of starch. With increment of the radiation dose, gel fraction became higher and attained the maximum (96.5%) at 15 kGy, above wh...

In this research work γ-ray induced grafting of co-monomers acrylic acid (AAc) and methyl methacrylate (MMA) on polyethylene (PE) films was investigated and the grafted films were tested for the removal of heavy metal ions from aqueous solution. Gamma ray induced grafting of AAc and MMA was optimized with respect to monomer ratio, monomer concentra...

Treatment of industrial heavy metal contaminated waste water prior to its discharge to environment is a contemporary approach. Grafted polymers may work in this purpose as heavy metal adsorbent. A gamma radiation induced grafting process is adopted to graft acrylic acid (AAc) and 2-hydroxyethyl methacrylate (HEMA) co-monomers on polyethylene (PE) i...

Acrylamide (AAm) grafted polyethylene terephthalate (PET) films were prepared by γ-ray induced grafting technique. The partially hydrolyzed AAm grafted PET films were studied for the removal of Co(II) from aqueous solution. The Co(II) adsorbed hydrolyzed grafted films was investigated by SEM, EDS and FTIR. A probable mechanism for the Co(II) adsorp...

Selective Hg(II) adsorption from aqueous solutions of Hg(II) and Pb(II) using hydrolyzed acrylamide (AAm)-grafted polyethylene terephthalate (PET) films was examined to explore the potential reuse of waste PET materials. Selective recovery of Hg(II) from a mixture of soft acids with similar structure, such as Hg(II) and Pb(II), is important to allo...

In the present study, the γ-ray induced grafting of acrylamide (AAm) onto poly(ethylene terephthalate) (PET) films and the resulting changes in properties, including the Hg(II)-capturing functionality, were investigated. No grafting was observed on pristine PET films. Therefore, the films were treated with dimethyl sulfoxide (DMSO) before the γ-ray...

Grafting of acrylic acid onto cotton has been performed with radiation processing technology using Co-60 gamma source. The parameters like the influence of radiation dose, acrylic acid concentration and solvent on degree of grafting has been investigated. The degree of grafting was found to depend on radiation dose, acrylic acid concentration and s...

Acrylic acid (AAc) grafted polyethylene terephthalate (PET) films were prepared by γ irradiation. The graft films showed little metal ion adsorption due to compact structure of the graft chains as shown by the scanning electron microscopy (SEM) images which restricted the access of metal ions to the functional groups. Therefore, the graft films wer...

Ultraviolet (UV)-induced graft copolymerization of allyl acetate (AA) monomer onto poly(ethylene terephthalate) (PET) films and the subsequent sulfonation on the monomer units in the grafting chain using chlorosulfonic acid (ClSO3H) were carried out to prepare proton exchange membranes (PEMs) for fuel cells. A maximum grafting value of 12.8% was fo...

Thin gelatin films were prepared via casting at 70�C. Tensile strength (TS) and elongation at break (Eb%) of the gelatin films were found to be 20MPa and 8.7% respectively. To improve the mechanical and thermal properties, gelatin films were cured with trimethylolpropane trimethacrylate (TMPTMA) using UV radiation. Monomer concentration, soaking ti...

Thin gelatin films (about 0.25 mm thickness) were prepared from granular gelatin via casting. The mechanical properties of gelatin films such as tensile strength (TS), elongation at break (Eb%), water uptake and water aging properties were investigated. To improve the water aging properties of gelatin films, gelatin-glucose and gelatin–urea films w...

Sodium Alginate/bentonite clay composites of different compositions were prepared by solution casting method. The electrical properties (Conductivity, Dielectric constant) of the composites were investigated by standard methods with Impedance Analyzer. The electrical properties were found to improve with the incorporation of bentonite clay. The the...

As the demand for radiation grafted Proton Exchange Membranes (PEMs) is intensifying, interest in new materials for preparing PEM is rapidly increasing. This study aims to develop sustainable low-cost highly conductive PEM. In our work we have prepared linear low density polyethylene (LLDPE) based PEM and investigated the membrane characteristics....

Gelatin-PVA blend films of different compositions (0%, 5%, 10%, 15% of PVA) were prepared by casting. The tensile strength (TS) and elongation at break (Eb) of the films were studied. The TS and Eb of pure gelatin films were found to be 32 MPa and 3.3% respectively. The films were irradiated under different gamma radiation dose (50 Krad, 100 Krad,...

Gelatin films were prepared from granular gelatin by casting. Gelatin films were modified by photocuring with a trifunftional monomer Trimethylolpropane trimethacrylate (TMPTMA). Optimum condition for photocuring were established. Water aging of untreated and modified gelatin films was studied. Thermal aging of untreated and TMPTMA treated films we...

Jute fabrics reinforced polypropylene (PP) composites were prepared by compression molding. Tensile strength (TS), tensile modulus (TM), bending strength (BS), bending modulus (BM) and impact strength (IS) of the composites were studied. To investigate the effect of oxidizing agents on the properties of the composites, jute fabrics were treated sep...

Poly(ethylenetarepthalate) (PET)-based polymer electrolyte membranes (PEMs) for fuel cells were successfully prepared by grafting of allyl methacrylate (AMA) and allyl acetate separately onto PET films under UV- radiation. A consequent selective sulfonation of the grafted films was performed by chlorosulfonic acid (ClSO¬3H) under milder condition....

Composites containing various amounts of LLDPE (Linear Low Density Polyethylene) and clay (0, 1, 5, 10, 20 and 30% of clay) were prepared using two different types of clay (Bijoypur white clay and China clay) by extrusion technique followed by compression molding. Tensile strength (TS) & tensile modulus (TM) of pure LLDPE were found to be 9.8 MPa &...

The chitosan/starch blend films of 2:1 ratio were prepared by solution casting. Tensile strength (TS) and elongation at break (%Eb) of chitosan/starch blend film were found to be 9.33 MPa and 3.6%, respectively. The blend films (2% Chitosan) were soaked in six different formulations of methylmethacrylate (MMA) monomer and aliphatic urethane diacryl...

Composites containing various amounts of LLDPE (Linear Low Density Polyethylene) and clay (0, 1, 5, 10, 20 and 30% of clay) were prepared using two different types of clay (Bijoypur white clay and China clay) by extrusion technique followed by compression molding. Tensile strength (TS) & tensile modulus (TM) of pure LLDPE were found to be 9.8 MPa &...