6 publications
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Experimental Analysis of Physical Parameters in Treated WaterBy Iffat R. Arisa
Abstract: During the first phase, the surface water treatment plant at Saidabad treats 225 million liters of water per day. In the treated water, turbidity, color, total coliform, fecal coliform, and hardness are reduced; on the other hand, conductivity and total dissolved solids increase. In the wet season, turbidity is high due to relatively coarse particle dispersions in river water. All other parameters, such as, color, total and fecal coliform, hardness, …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 6, Issue 2, 2020 · pp. 32–38 Read article →
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Assessment of THMs Formation Potential in Treated WaterBy Iffat R. Arisa
Abstract: Raw water in the Saidabad water treatment plant is treated by chlorination. Water samples were collected in February, March, July and September from the six locations of DND canal and treated by chlorine dose. Higher chlorine dose is required in dry season. The treated samples are tested for dissolved organic carbon (DOC), chloride and bromide ions. Using the test results, Trihalomethane (THM) predictive models are developed. Total THM formation is …
Published in International Journal of Green Chemistry · Vol. 5, Issue 2, 2019 · pp. 30–45 Read article →
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Presence of Chemical Ions in Raw and Treated WaterBy Iffat R. Arisa
Abstract: Dhaka water supply and sewerage authority utilizes a section of the DND canal from Sarulia to Kajla to convey raw water from the Shitalakhya river to the water treatment plant at Saidabad. Raw water quality is poor mostly in the dry season. High heavy metal concentration in the water at the intake point is found. Aluminum (Al), Cadmium (Cd), Lead (Pb), and Mercury (Hg) are detected in river water which …
Published in International Journal of Green Chemistry · Vol. 5, Issue 2, 2019 · pp. 9–21 Read article →
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Failure Prediction of Composite LaminaBy Iffat R. Arisa
Abstract: Composite materials are preferable in many applications of engineering than their metallic equivalent. These materials provide desirable characteristics and required properties for specific design and testing. In orthotropic fiber composites, the fiber orientation dictates the material properties, because the properties can be built into the laminate during fabrication. In this study, a composite laminate is tested with a specific configuration whether it would fail or survive under specific load. If …
Published in International Journal of Composite Materials and Matrices · Vol. 5, Issue 2, 2019 · pp. 27–36 Read article →
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Finite Element Analysis of Composite TubeBy Iffat R. Arisa
Abstract: Abstract – In many industries, composite tubes are preferable than other materials, like, aluminum, steel, wood, iron. The durability, strength, stiffness, weather and corrosion resistance of the tubes are required properties in industries. It is fabricated in several layers depending on their functions. In this study, composite tube is modeled using ANSYS software by changing material properties and layer orientation. ANSYS can predict results before fabricating composite sample. The meshed …
Published in International Journal of Composite Materials and Matrices · Vol. 5, Issue 2, 2019 · pp. 48–59 Read article →
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Implementation of Airport Construction ManagementBy Iffat R. Arisa
Abstract: In this article, Micro PAVER is used to analyze present condition of Neil Armstrong airport facilities. It also predicts the future condition and develop ways for pavement maintenance based on available funds and conditions. The airport infrastructure system is divided into several networks, branches, sections, sample units and the types, severity of distresses are identified for those units. Weather, traffic and maintenance are considered to develop prediction model for pavement …
Published in International Journal of Construction Engineering and Planning · Vol. 5, Issue 2, 2019 · pp. 64–75 Read article →