scholarly journals Effective Adsorptive Removal of Methylene Blue from Water Using Wood- Plastic Composite Containing High Density Polyethylene and Wood Particles

2021 ◽  
Author(s):  
Zahra Ranjbarha ◽  
Javad Mokhtari Aliabad ◽  
Parviz Aberoomand-Azar ◽  
Seyed Amin Mirmohammadi ◽  
Mohammad Saber-Tehrani
Keyword(s):  
Methylene Blue ◽  
High Density Polyethylene ◽  
Textile Industry ◽  
Contact Time ◽  
Cost Effective ◽  
Homogeneous System ◽  
High Density ◽  
Wood Plastic Composite ◽  
Plastic Composite ◽  
Adsorbent Surface

Abstract In this study, the ability to remove methylene blue cation pigment using wood-plastic composite containing high density polyethylene and wood powder as a recycled material was studied. The effect of some important parameters such as pH, adsorbent amount and contact time were investigated. Adsorption efficiencies for methylene blue was maximized at alkaline pH. Adsorption capacity increased with increasing adsorbent amount and contact time. The value of R2 in Langmuir model was equal to 1 and the separation factor for 0.5 and 1 g of adsorbent were 0.09 and 0.1, respectively. Given that the methylene blue adsorption data were more consistent with the Langmuir isotherm model, it can be stated that the wood-plastic composite probably has uniform adsorption surfaces and the adsorption process occurred in homogeneous system on the adsorbent surface. Based on the results of this study, it was observed that this composite is a suitable adsorbent for removing methylene blue from aqueous solutions and used as a purifying agent in the decolorization of effluents containing pigments. This adsorbent is recyclable and is cost-effective to remove dye from textile industry wastewater.

scholarly journals Flexural Creep Behavior of High-Density Polyethylene Lumber and Wood Plastic Composite Lumber Made from Thermally Modified Wood

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 262 ◽  
Author(s):  
Murtada Abass A. Alrubaie ◽  
Roberto A. Lopez-Anido ◽  
Douglas J. Gardner
Keyword(s):  
Creep Behavior ◽  
Creep Deformation ◽  
High Density Polyethylene ◽  
Creep Compliance ◽  
High Density ◽  
Wood Plastic Composite ◽  
Creep Stress ◽  
Plastic Composite ◽  
Thermally Modified Wood ◽  
Modified Wood

The use of wood plastic composite lumber as a structural member material in marine applications is challenging due to the tendency of wood plastic composites (WPCs) to creep and absorb water. A novel patent-pending WPC formulation that combines a thermally modified wood flour (as a cellulosic material) and a high strength styrenic copolymer (high impact polystyrene and styrene maleic anhydride) have been developed with advantageous viscoelastic properties (low initial creep compliance and creep rate) compared with the conventional WPCs. In this study, the creep behavior of the WPC and high-density polyethylene (HDPE) lumber in flexure was characterized and compared. Three sample groupings of WPC and HDPE lumber were subjected to three levels of creep stress; 7.5, 15, and 30% of the ultimate flexural strength (Fb) for a duration of 180 days. Because of the relatively low initial creep compliance of the WPC specimens (five times less) compared with the initial creep compliance of HDPE specimens, the creep deformation of HDPE specimens was six times higher than the creep deformation of WPC specimens at the 30% creep stress level. A Power Law model predicted that the strain (3%) to failure in the HDPE lumber would occur in 1.5 years at 30% Fb flexural stress while the predicted strain (1%) failure for the WPC lumber would occur in 150 years. The findings of this study suggest using the WPC lumber in structural application to replace the HDPE lumber in flexure attributable to the low time-dependent deformation when the applied stress value is withing the linear region of the stress-strain relationship.

Effect of Weathering on the Mechanical Properties of HDPE/Rice Straw Composite

2016 ◽  
Vol 860 ◽  
pp. 69-72 ◽  
Author(s):  
Yehia M.S. El Shazly ◽  
Mohamed H. El Nemr ◽  
Ashraf A. Mubarak ◽  
Mohamed H. Zaki
Keyword(s):  
Mechanical Properties ◽  
Rice Straw ◽  
High Density Polyethylene ◽  
High Density ◽  
Wood Plastic Composite ◽  
Plastic Composite ◽  
Polyethylene Wax ◽  
Straw Composite

In recent years, Wood Plastic Composite (WPC) has found widespread applications in the field of construction, decoration and furniture. In this work, the effect of weathering on the mechanical properties of WPC made from high density polyethylene (HDPE) and rice straw particles (RS) has been studied. Different loading of composite (20, 35 and 50% RS) were tested. Polyethylene wax (PE-wax) and UV-stabilizer were also added to assess their effect on the WPC composite.

scholarly journals Pemanfaatan Container Menjadi Ruang Isolasi Apung Sebagai Alternatif Bagi Pasien Covid-19

Syntax Idea ◽  
2021 ◽  
Vol 3 (2) ◽  
pp. 383
Author(s):  
Siti Dwi Lazuardi ◽  
Akhdan Muhammad Muaz ◽  
Dina Fatimatuz Zahroh ◽  
Altalariq Pranantha Yudha Airlangga ◽  
Afyfah Ramadhani Dias Saputri
Keyword(s):  
High Density Polyethylene ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
High Density ◽  
Cost Ratio ◽  
Wood Plastic Composite ◽  
Benefit Analysis ◽  
Benefit Cost Ratio ◽  
Plastic Composite ◽  
Benefit Cost

Kasus COVID-19 hingga saat ini terus mengalami peningkatan, terlalu banyaknya pasien yang membutuhkan perawatan intensif mengakibatkan rumah sakit mengalami kondisi overloaded capacity. Dalam rangka meminimalisir adanya pasien rawat mandiri dan berisiko adanya cluster keluarga, maka pemanfaatan container menjadi ruang isolasi apung sebagai alternatif bagi masyarakat untuk mendapat penanganan intensif COVID-19. Pemanfaatan container bekas 20 feet dipadukan dengan alas untuk mengapung berbahan HDPE (High-Density Polyethylene) dan alas pijakan WPC (Wood Plastic Composite). Dalam mempertimbangkan besaran biaya serta mengukur keoptimalan dari manfaat penelitian, maka penilitian ini menggunakan metode CBA (Cost-Benefit Analysis) dan metode BCR (Benefit Cost Ratio) untuk menguji kelayakan dari penelitian ini. Hasil penelitian menunjukan bahwa pemanfaatan container bekas menjadi ruang isolasi apung termasuk dalam kategori baik, dimana penelitian ini dapat menekan angka pasien isolasi mandiri sebesar 35% dan hasil perhitungan manfaat memiliki rasio sebesar 1,02 dan menghasilkan nilai NPV positif dengan batasan kelayakan yaitu BCR > 1, dan NPV > 1. Dari hasil penelitian tersebut, dapat disimpulkan bahwa, ruang isolasi apung ini layak untuk direalisasikan atau dioperasikan.

Synthesis of Adsorbent from Bagasse for Methylene Blue Adsorption

2021 ◽  
Vol 7 (2) ◽  
pp. 188-195
Author(s):  
Nurhasni Nurhasni ◽  
Sariana Harahap ◽  
Ahmad Fathoni ◽  
Hendrawati Hendrawati
Keyword(s):  
Methylene Blue ◽  
Textile Industry ◽  
Contact Time ◽  
Ph Effect ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Batch Method ◽  
Homogeneous Surface ◽  
Dyeing Process ◽  
Ft Ir

The ability of bagasse adsorbents to adsorb methylene blue without activation using 0.5 M H2SO4 solution was examined. Methylene blue is widely used in the textile industry because it produces bright colors, and the dyeing process is fast and easy. This research aims to determine the optimum adsorption conditions, namely the variations in contact time, dye concentration, adsorbent mass, and pH effect on methylene blue, which were carried out using the batch method. Furthermore, the adsorbents were characterized by FT-IR and SEM. The optimum state of the bagasse adsorbent to adsorb methylene blue dye has a mass of 0.5 grams, a contact time of 30 minutes, a concentration of 50 ppm, and a pH of 5. The character of the adsorbent after activation with H2SO4 was better than without activation. The highest adsorption efficiency of methylene blue dye in the batch method was 99.67%. The FTIR spectrum of the bagasse adsorbent showed OH, C-H, C=O, C=C, and C-O functional groups. The adsorption isotherm model for methylene blue dye follows the Langmuir isotherm since the graph obtained is linear with the correlation coefficient (R2) = 1, where the adsorbent has a homogeneous surface.

Effect of particulate fillers on natural rubber/high-density polyethylene blends for roofing application

2020 ◽  
pp. 096739112093461
Author(s):  
WVWH Wickramaarachchi ◽  
S Walpalage ◽  
SM Egodage
Keyword(s):  
Impact Strength ◽  
Natural Rubber ◽  
High Density Polyethylene ◽  
Thermoplastic Elastomer ◽  
Cost Effective ◽  
Barium Sulphate ◽  
Filler Loading ◽  
High Density ◽  
Melt Mixing ◽  
Excellent Property

Blending of two or more polymers generates a new material, which is more cost-effective than a newly synthesised material. Blending-type thermoplastic elastomer (TPE) is produced by melt-mixing of a thermoplastic with a rubber. These blends have high demands associated with excellent property combinations of the parent materials. Particulate fillers are used in the rubber and plastic industry for property modification and cost reduction. In this work, six particulate fillers, namely, calcium carbonate, barium sulphate (BaSO4), kaolin, talc, Snobrite clay and dolomite were used to develop natural rubber (NR)/high-density polyethylene (HDPE) TPE blends, and the most suitable filler for roofing application was identified. A series of NR/HDPE 20/80 blends were prepared by varying filler loading from 10 phr to 30 phr at 10 phr intervals using a Plasticorder. Mechanical properties, such as tensile strength, hardness, impact strength and tear strength, and gel content of the blends were investigated. The addition of talc, dolomite and kaolin to NR/HDPE blend showed reduced impact strength, which is the most important property for a roofing application. The other three fillers showed improved impact strength at specific loadings. The blend with 30 phr of BaSO4 was identified as the best blend, as per the overall performance.

Mechanical Properties and Thermal Conductivity of Coal Ash-Recycled High-Density Polyethylene Composite

2018 ◽  
Vol 06 (01n02) ◽  
pp. 1850002
Author(s):  
Ban M. Alshabander ◽  
Awattif A. Mohammed ◽  
Asmaa Sh. Khalil
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
High Density Polyethylene ◽  
Waste Product ◽  
Construction Materials ◽  
Coal Ash ◽  
High Density ◽  
Plastic Composite ◽  
The Impact ◽  
Recycled Hdpe

In this study, coal ash/recycled plastic composite material was fabricated with post-consumer high-density polyethylene (HDPE) and coal ash particles. The main idea of using coal ash, since it is also a waste product, as reinforcing filler in recycled HDPE is to reduce the cost, develop lightweight and produce environmental-friendly materials. Coal ash/recycled plastic composite have been used in significant applications as construction materials including flooring, landscaping, fencing, railing window framing and roof tiles. Effect of coal ash loading on the mechanical properties and thermal conductivity of coal ash/recycled HDPE composite were determined. It is expected to use waste materials in new field by getting novel composite materials with developed mechanical properties. It was found that coal ash filler indicated significant improvement on the mechanical properties of composites. The results show that the impact decreased tremendously from 57.32 to 15.8[Formula: see text]kJ/m2 with only 30[Formula: see text]wt.% loading of coal ash. The filler increases the elasticity of the material and reduces its ability to absorb deformation energy.

Effect of pre-drilling, loading rate and temperature variation on the behavior of railroad spikes used for high-density-polyethylene crossties

2016 ◽  
Vol 231 (1) ◽  
pp. 44-56 ◽  
Author(s):  
Ibrahim Lotfy ◽  
Maen Farhat ◽  
Mohsen A Issa
Keyword(s):  
Finite Element ◽  
High Density Polyethylene ◽  
High Density ◽  
Environmental Benefits ◽  
Experimental Program ◽  
Great Promise ◽  
Static Testing ◽  
Plastic Composite ◽  
Track System ◽  
The Usa

Railroad spikes represent a vital component of the rail track system, as they fasten the rail to the supporting crossties. Thus, it is important to understand its behavior and effect on the fastening assembly to mitigate any local failure, which, in turn, could lead to system deterioration or damage. Currently, alternative solutions to the traditional hardwood timber crossties are increasing being adopted by the railroad industry in the USA, with recycled plastic composite crossties being among the available alternatives. Their sustainably, environmental benefits, durability and ease of installation render them an attractive and competitive solution. Several research programs have studied this material and its fastening system in the past; however, additional research is required to fully understand the behavior of these materials and their interactions with the fastening system components. This paper presents an investigation that aims to understand and assess the performance of typical railroad spikes used for recycled high-density-polyethylene crossties. The study encompassed a comprehensive experimental investigation and analytical finite element modeling. The testing program evaluated railroad spikes using static testing methods recommended by the American Railway Engineering and Maintenance-of-Way Association (AREMA) manual. These tests addressed the rail spike pullout and lateral restraint for both screw and cut spikes. Finite element models were constructed and calibrated using the data obtained from the experimental program in order to extrapolate on the experimental results and predict the behavior of full-scale systems beyond the scale of the laboratory. The results observed in this study showed great promise, surpassing all the AREMA recommendations, which highlights the potential of these materials if properly optimized and engineered. Screw spikes exhibited a very good performance, surpassing the minimum recommendations by a significant margin (up to more than 200%) and are thus are highly recommended for future implementation.

Sign in / Sign up

Export Citation Format

Share Document