scholarly journals Effect of Curing Temperature on the Properties of Latex Based Membrane for Oily Wastewater Filtration

2021 ◽  
Vol 945 (1) ◽  
pp. 012032
Author(s):  
Tzyy-Jeng Yong ◽  
Yamuna Munusamy ◽  
Yit-Thai Ong ◽  
Wei-Ming Yeoh ◽  
Mohamed Kchaou
Keyword(s):  
Rejection Rate ◽  
Curing Temperature ◽  
Permeation Flux ◽  
Butadiene Rubber ◽  
Oily Wastewater ◽  
Environmental Disaster ◽  
Wastewater Filtration ◽  
Wastewater Pollution ◽  
Curing Method ◽  
Latex Compounding

Abstract Oily wastewater pollution has always been part of the most serious worldwide environmental disaster. Thus, the treatment of oily wastewater is notably crucial. In this work, nitrile butadiene rubber/graphene oxide (NBR/GO) membranes were fabricated by latex compounding and curing method which is comparatively brand-new technique to produce membranes for wastewater treatment. Therefore, the steps in the production need to be studied to enhance the performance of the membrane. Curing temperature is an important factor in the production of the latex-based membrane. In this paper, the effect of curing temperature in the range of 90 °C – 110 °C on the morphology, tensile properties, permeation flux, and oil rejection rate performance of the membrane was studied. The curing temperature was found to affect the surface morphology and integrity of the membranes which sequentially affects the performance of the membrane in terms of strength, permeation flux, and oil rejection rate. NBR/GO membranes cured at the temperature of 100 °C exhibit the highest flux of 491.84 L/m2.hr with an oil rejection rate of 95.44 %, with the ultimate tensile strength (UTS), elongation break (EB%), and E-Modulus (E-mod) of 34.490 MPa, 1627.11 %, and 1.309 MPa, respectively.

scholarly journals Development of Environment-Friendly Membrane for Oily Industrial Wastewater Filtration

Membranes ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 614
Author(s):  
Mohammed Alquraish ◽  
Yong Tzyy Jeng ◽  
Mohamed Kchaou ◽  
Yamuna Munusamy ◽  
Khaled Abuhasel
Keyword(s):  
Membrane Surface ◽  
Research Work ◽  
Rejection Rate ◽  
Operating Pressure ◽  
Butadiene Rubber ◽  
X Ray Diffraction ◽  
Water Separation ◽  
Membrane Performance ◽  
Wastewater Filtration ◽  
Oil Water Separation

Latex phase blending and crosslinking method was used in this research work to produce nitrile butadiene rubber-graphene oxide (NBR-GO) membranes. This fabrication technique is new and yields environmentally friendly membranes for oil-water separation. GO loading was varied from 0.5 to 2.0 part per hundred-part rubber (pphr) to study its effect on the performance of NBR-GO membrane. GO was found to alter the surface morphology of the NBR matrix by introducing creases and fold on its surface, which then increases the permeation flux and rejection rate efficiency of the membrane. X-Ray diffraction analysis proves that GO was well dispersed in the membrane due to the non-existence of GO fingerprint diffraction peak at 2θ value of 10–12° in the membrane samples. The membrane filled with 2.0 pphr GO has the capability to permeate 7688.54 Lm−2 h−1 water at operating pressure of 0.3 bar with the corresponding rejection rate of oil recorded at 94.89%. As the GO loading increases from 0.5 to 2.0 pphr, fouling on the membrane surface also increases from Rt value of 45.03% to 87.96%. However, 100% recovery on membrane performance could be achieved by chemical backwashing.

scholarly journals Latex-Based Membrane for Oily Wastewater Filtration: Study on the Sulfur Concentration Effect

2021 ◽  
Vol 11 (4) ◽  
pp. 1779
Author(s):  
Khaled Abuhasel ◽  
Yong Tzyy Jeng ◽  
Yamuna Munusamy ◽  
Mohamed Kchaou ◽  
Mohammed Alquraish
Keyword(s):  
Surface Morphology ◽  
Surface Area ◽  
Structural Integrity ◽  
Water Flux ◽  
Research Work ◽  
Rejection Rate ◽  
Butadiene Rubber ◽  
Folded Structure ◽  
Micro Cracks ◽  
Curing Method

Nitrile butadiene rubber (NBR) latex/graphene oxide (GO) membranes were fabricated through a latex compounding and curing method which is a relatively new method to produce membranes for wastewater treatment. Hence, the steps in the production of the membrane through this new approach need to be evaluated to optimize the performance of the membrane. In this paper, the effect of sulfur loading in the range of 0.5 to 1.5 parts per hundred rubber (phr) on the morphology, crosslink density, tensile properties, permeation flux and oil rejection rate performance of NBR/GO membranes was studied. The sulfur loading was found to influence the surface morphology and integrity of the membrane which in turn affects the performance of the membrane in terms of strength, water flux and rejection rate of oil. Inaccurate sulfur loading produced a membrane with micro cracks, low surface area for filtration and could not withstand the filtration pressure. In this research work, the membrane with 1.0 phr sulfur provides the highest water flux value and oil rejection rate of 834.1 L/m2·hr and 92.23%, respectively. Surface morphology of 1.0 phr sulfur-loaded membrane revealed the formation of continuous membrane with high structural integrity and with wrinkles and folded structure. Furthermore, micro cracks and a less effective surface area for filtration were observed for membranes with 0.5 and 1.5 phr sulfur loading.

Superhydrophobic coating on quartz sand filter media for oily wastewater filtration

2018 ◽  
Vol 553 ◽  
pp. 509-514 ◽  
Author(s):  
Jianlin Liu ◽  
Xiaofei Zhu ◽  
Hongwei Zhang ◽  
Fuping Wu ◽  
Bigui Wei ◽  
...  
Keyword(s):  
Quartz Sand ◽  
Oily Wastewater ◽  
Superhydrophobic Coating ◽  
Filter Media ◽  
Sand Filter ◽  
Wastewater Filtration

Mullite ceramic membranes for industrial oily wastewater treatment: experimental and neural network modeling

2011 ◽  
Vol 64 (3) ◽  
pp. 670-676 ◽  
Author(s):  
H. Shokrkar ◽  
A. Salahi ◽  
N. Kasiri ◽  
T. Mohammadi
Keyword(s):  
Neural Network ◽  
Ceramic Membrane ◽  
Ceramic Membranes ◽  
Average Error ◽  
Neural Network Modeling ◽  
Alumina Powder ◽  
Permeation Flux ◽  
Oily Wastewater ◽  
Predictive Tool ◽  
Mullite Ceramic

In this paper, results of an experimental and modeling of separation of oil from industrial oily wastewaters (desalter unit effluent of Seraje, Ghom gas wells, Iran) with mullite ceramic membranes are presented. Mullite microfiltration symmetric membranes were synthesized from kaolin clay and α-alumina powder. The results show that the mullite ceramic membrane has a high total organic carbon and chemical oxygen demand rejection (94 and 89%, respectively), a low fouling resistance (30%) and a high final permeation flux (75 L/m2 h). Also, an artificial neural network, a predictive tool for tracking the inputs and outputs of a non-linear problem, is used to model the permeation flux decline during microfiltration of oily wastewater. The aim was to predict the permeation flux as a function of feed temperature, trans-membrane pressure, cross-flow velocity, oil concentration and filtration time, using a feed-forward neural network. Finally the structure of hidden layers and nodes in each layer with minimum error were reported leading to a 4–15 structure which demonstrated good agreement with the experimental measurements with an average error of less than 2%.

Improvement of physicomechanical properties of grafted coir fiber with ethyleneglycol dimethacrylate: effect of UV radiation

2012 ◽  
Vol 32 (2) ◽  
Author(s):  
Haydar U. Zaman ◽  
Mubarak A. Khan ◽  
Ruhul A. Khan
Keyword(s):  
Monomer Concentration ◽  
Curing Temperature ◽  
Coir Fiber ◽  
Curing Time ◽  
Thermal Curing ◽  
Optimum Conditions ◽  
Coir Fibers ◽  
Different Temperatures ◽  
Curing Method ◽  
Different Doses

Abstract Coir fibers were modified with ethyleneglycol dimethacrylate (EGDMA)+MeOH solutions under thermal curing method at different temperatures (50°C–90°C) and curing times (30–70 min). Monomer concentration, curing temperature, and curing time were optimized in terms of grafting and mechanical properties, and 50% EGDMA, 70°C and 50 min curing time, respectively, registered better performance. Coir fibers were pretreated with ultraviolet radiation at different doses, soaked in optimized solution, and cured under optimum conditions. These fibers showed improved properties than EGDMA-treated fibers. Water uptake and simulated weathering test of untreated and treated fibers were studied.

scholarly journals Investigation on tensile properties of epoxy/graphene nano-platelets/carboxylated nitrile butadiene rubber ternary nanocomposites using response surface methodology

2019 ◽  
Vol 9 ◽  
pp. 184798041985584 ◽  
Author(s):  
Mohammadhossein Saberian ◽  
Faramarz Ashenai Ghasemi ◽  
Ismail Ghasemi ◽  
Sajjad Daneshpayeh
Keyword(s):  
Tensile Strength ◽  
Response Surface Methodology ◽  
Tensile Properties ◽  
Response Surface ◽  
Tensile Modulus ◽  
Curing Temperature ◽  
Butadiene Rubber ◽  
Elongation At Break ◽  
Low Concentration ◽  
Nitrile Butadiene Rubber

In this study, the response surface methodology was used to investigate the tensile properties of epoxy/graphene nano-platelets/carboxylated nitrile butadiene rubber ternary nanocomposites. Box–Benhken method was used to design experiments for four factors consisting of graphene nano-platelets (at 0, 0.75, and 1.5 wt%), carboxylated nitrile butadiene rubber (0, 5, and 10 wt%), hardener contents (80, 90, and 100 phr), and also different post curing temperature (130, 140, and 150°C). After the samples were prepared, a tensile test was performed to obtain the tensile strength, tensile modulus, and elongation at break of nanocomposites. Moreover, field-emission scanning electron microscopy was used to observe the state of graphene nano-platelets dispersion. The results obtained from the tensile tests showed that increasing the graphene nano-platelets, carboxylated nitrile butadiene rubber, and hardener contents and high post curing temperature reduced the tensile strength. The optimum value of tensile modulus was achieved at low concentration of carboxylated nitrile butadiene rubber and high contents of graphene nano-platelets, whereas maximum elongation at break occurred at high content of carboxylated nitrile butadiene rubber and low concentration of graphene nano-platelets and hardener. In addition, a second-order polynomial model was used to correlate the tensile properties of ternary nanocomposites to the desired factors. Finally, contour plots were used to determine optimum values of the desired factors. It was seen that the presence of 10 wt% of carboxylated nitrile butadiene rubber in the epoxy matrix increased the elongation at break by the considerable amount of ∼49%.

The properties of rice bran carbon/nitrile-butadiene rubber composites fabricated by latex compounding method

2016 ◽  
Vol 39 (S2) ◽  
pp. E687-E696 ◽  
Author(s):  
Yinhang Zhang ◽  
Xin Ge ◽  
Mei-Chun Li ◽  
Fei Deng ◽  
Jihwan Oh ◽  
...  
Keyword(s):  
Rice Bran ◽  
Butadiene Rubber ◽  
Rubber Composites ◽  
Nitrile Butadiene Rubber ◽  
Latex Compounding

Fabrication of Sulfonated Bamboo Charcoal-Chitosan (sBC-CS) Hybrid and its Applications for Reinforcement of Styrene-Butadiene Rubber

2017 ◽  
Vol 872 ◽  
pp. 160-164
Author(s):  
Xiang Xu Li ◽  
Ur Ryong Cho
Keyword(s):  
Particle Size ◽  
Tensile Strength ◽  
Filling Ratio ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Bamboo Charcoal ◽  
Rubber Composites ◽  
Vulcanized Rubber ◽  
Styrene Butadiene ◽  
Latex Compounding

Styrene-Butadiene Rubber (SBR) composites incorporated with different fillers with similar filling ratio, were fabricated by latex compounding method. The particle size, tensile strength, abrasion resistance of the vulcanized rubber composites were investigated. The sulfonated bamboo charcoal-chitosan hybrid (sBC-CS) showed great dispersion rate and smaller particle size compared with those of other fillers. In addition, this composite exhibited the best mechanical reinforcing performance among the four fillers.

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