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Biosorption of Heavy Metals from Industrial Wastewater using Local Blue-Green Microalgae

Corresponding Author : M.I. Kabir (

Abstract : Heavy metal pollution and its effects on public health and the environment have led to an increased interest in developing biotechnological approaches. This study was carried out to check the heavy metal biosorption capacity of locally available blue-green microalgae. In this study, microalgae were collected from local ponds and cultured in BG-11 medium. Sixteen different algal doses from 0.2 g/L to 20 g/L were applied to synthetic wastewater and their removal efficiencies of Cr(VI), Ni(II) and Zn(II) were found to…

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Estimation of Water Quality in Surma River Using Digital Image Data

Corresponding Author : S.Z. Farzana (

Abstract : Typical water quality measuring techniques in Bangladesh are time-consuming, costly, and are not certainly accessible to the general people while it is very essential for ensuring safe water for different household and drinking purposes. In this study, a low-cost digital camera has been used to measure different water quality parameters aimed to shape it as an alternative to the traditional system. Water samples were collected from two points of the Surma River, and subsequent images were taken with camera height…

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Explore the Impacts of Digital Technology on the Home Confined Children During COVID-19 Isolation: Is it Blessing or Curse?

Corresponding Author : R. M. S. R. Pir (

Abstract : The rate at which COVID-19 has rapidly been spreading has made every sector of human life to feel its impact immediately. Like adults, children are also suffering heavily since the outbreak of Covid-19. The education institutes in most parts of the world have been closed since last week of March, 2020. When the school break became longer, new online learning policies were taken and most of the students around the globe started to attend online classes. Children have started to…

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Dimension Reduction Using Supervised LDA and Unsupervised PCA and 3D CNN for Classification of Hyperspectral Image

Corresponding Author : T. Jannat (

Abstract : Hyperspectral Image (HSI) classification is becoming extremely appealing now-a-days because it contains huge information about a scene. The main problem of dealing with hyperspectral image is “Hughes Phenomenon” caused by the large number of dimensions. To address this, dimensionality reduction techniques need to be applied as a preprocessing step. In this paper, we used supervised LDA and unsupervised PCA for dimension reduction. Then for classification we used 3D CNN. Performance of classification depends on both spatial and spectral information for…

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Effect of Blanching Pre-Treatment and Drying Temperature on Drying Kinetics and Quality Characteristics of Mango Peel Powder

Corresponding Author : M.S. Hossain (

Abstract : <p>Mango is a seasonal nutritious fruit as it generates mango peel as a byproduct from the mango processing industries in a huge amount. The effect of pretreatment (hot water blanching & steam blanching) and drying temperatures (60°C, 65°C, 70°C) by convective drying on drying kinetics of mango peel and sensory properties of dried mango peel powder (MPP) were evaluated. Increasing Drying rate and decreasing drying time were observed by increasing the drying temperature. The maximum drying rate was observed for…

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Solar irradiance measurement in Sylhet and performance evaluation of photovoltaic (PV) modules in outdoor conditions

Corresponding Author : M.M. Hasan (

Abstract : Replacing fossil fuel based energy by renewable energy is a crying need of the present world. Solar energy is one of the most popular and important sources of renewable energy. The geographical position and climatic conditions of Bangladesh are favorable for solar energy. The diurnal variation of solar irradiance is an important issue for all solar PV installations. In this research work, the solar irradiance at different tilting angles was measured during the sunshine hour. The daily data collection is…

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