Water quality is a big concern for the humankind as it most important natural resource. polluted by increasing activities of population and necessity to provide them with goods services that use water vital In this study, surface samples were collected in summer winter season from Rupsa river, Bangladesh, pH, electrical conductivity (EC), Cr, Ni, Cu, As, Cd Pb concentrations analyzed assess metal toxicity, identify possible sources determine health risk metals water. During season, mean Pb,...

Heavy metals contamination is a serious threat for the toxicity and bioaccumulation in food chain. Aquatic environment has become global concern because they have toxic effects on fishes. The concentration of heavy like arsenic (As), chromium (Cr), cadmium (Cd) lead (Pb) commercially fishes (Tenualosa ilisha, Gudusia chapra, Otolithoides pama, Setipinna phasa, Harpadon nehereus, Polynemus paradiseus, Sillaginopsis panijus Pampus chinensis) collected from Karnaphuli River Bangladesh were...

In Bangladesh, a nationwide lockdown was imposed on 26 March 2020, due to the COVID-19 pandemic. Due restricted emissions, it hypothesized that air quality has been improved during throughout country. The study is intended assess impact of measures in Bangladesh. We analyzed satellite data for four different pollutants (NO2, SO2, CO, and O3) changes atmospheric concentrations major cities as well across this study, NO2, O3 from 1 February 30 May year 2019 2020 were analyzed. average SO2 NO2...

Pharmaceutical wastewater (PWW) is rapidly growing into one of the world’s most serious environmental and public health issues. Existing treatment systems carry numerous loopholes in supplying ever-increasing need for potable water resulting from rises population, urbanization, industrial growth, volume produced each day. At present, conventional methods, such as coagulation, sedimentation, oxidation, membrane filtration, flocculation, etc., are used to treat PWW. In contrast these,...

Rice is the staple food of Bangladeshi people and consumed at least twice a day. Thus, presence toxic metals in rice grains has become major public health concern Bangladesh. The present research was conducted to investigate concentrations their possible human risks Tangail district Toxic were measured by using an inductively coupled plasma mass spectrometer (ICP-MS), mean samples found order Cr > Pb Ni As Cu Cd. Cr, Pb, As, Cd studied grain exceeded FAO/WHO standard values for 100%, whereas...

Toxic metal contamination in foodstuff is a major concern for public health and human beings are continuously exposed to toxic metals through consumption of cereals, pulses, vegetables, fruits, other crops grown the contaminated soil. The present study was conducted investigate concentrations chromium (Cr), nickel (Ni), copper (Cu), arsenic (As), cadmium (Cd), lead (Pb) foodstuffs their possible risks Jhenaidah Kushtia districts, Bangladesh. range Cr, Ni, Cu, As, Cd, Pb studied were...

Human activities around or within national highways, combined with atmospheric mixing, produce road dust, which can cause health problems through a variety of exposure routes. Thus, the study was aimed to investigate contamination, spatial distribution, potential ecological and human risks various toxic heavy metals such as lead (Pb), copper (Cu), chromium (Cr), cadmium (Cd), zinc (Zn), nickel (Ni) arsenic (As) in dusts samples collected from traffic load land-use types along hectic...

The southwestern coastal areas of Bangladesh have been severely suffering from the scarcity safe drinking water due to combined consequences hydrogeological processes, groundwater depletion, saltwater intrusion, and adverse anthropogenic activities. This concern results in serious public health hazards, particularly for children at primary schools. study was conducted evaluate some physiochemical bacteriological parameters tube wells (TWs) located schools Kalapara upazila, Patuakhali...

The aim of this study was to investigate the spatio-seasonal variations in water quality and suitability Shitalakhya river, an economically important ecologically critical urban river Bangladesh, along with associated influencing factors possible sources pollution. Therefore, surface samples were collected monthly from five sampling sites, fourteen parameters evaluated. results showed that some studied parameters, e.g., temperature, TDS, TA, TH, NO2–, NO3–, exceeded maximum allowable limit,...

The urban rivers of developing countries like Bangladesh have been severely affected by toxic heavy metal pollution, posing serious ecological and human health risks. This study aimed to investigate the concentrations, spatiotemporal discrepancies, associated risks five alarming metals (Pb, Cd, Cr, Cu Mn) in surface water Shitalakhya River around Narayanganj port, one biggest most important river ports Bangladesh. Water samples were collected for three prevailing seasons i.e., pre-monsoon,...

This study aimed to assess the physicochemical quality of water, presence toxic heavy metals, and associated ecological risk in trans-boundary Someshwari River as it enters Bangladesh through Netrokona District. Samples were collected over period from June 2021 May 2022 five distinct locations. The investigation examined current status various parameters including color, odor, temperature, dissolved oxygen (DO), biological demand (BOD), electric conductivity (EC), total solids (TDS),...

Rooftop cultivation of vegetables is considered as a potential food source for urban population. However, rooftop products in the area can be contaminated by different types pollutants like toxic metals and polycyclic aromatic hydrocarbons (PAHs). The present study first that investigated concentrations PAHs soils grown peri-urban areas Bangladesh. Red amaranth Spinach were selected cultivation, both soil vegetable samples collected analyzed determining cadmium (Cd), copper (Cu), lead (Pb),...

Biosurfactant-producing microorganisms improve the efficacy of hydrocarbon biodegradation as biosurfactant is essential in making hydrocarbons available for breakdown. The present study reports isolation biosurfactant-producing bacteria that can be used crude oil remediation and to characterize generated during breakdown oil. This also evaluating synergism potentiality simultaneous power generation. Two bacterial strains (Bacillus subtilis strain B1 Pseudomonas aeruginosa B2) were isolated...

Heavy metal concentrations in water and fish of the Shitalakhya river was measured to find out suitability its for drinking irrigation purposes. The Pb, Cu, Cr, Zn, Cd Hg were 0.0065; 0.0240; 0.0069; 0.8170; 0.0044; 0.0057 mg/L, respectively pre-monsoon, 0.0029; 0.0151; 0.0019; 0.4270; 0.0015; 0.0020 monsoon, 0.0040; 0.0212; 0.0039; 0.6520; 0.0031 post-monsoon season. heavy found higher pre-monsoon followed by monsoon. results also depicted that over three seasons pollution index evaluation...

Biodegradation is found to be a promising, cost-effective and eco-friendly option for the treatment of industrial wastewater contaminated by 1,4-dioxane (1,4-D), highly stable synthetic chemical probable human carcinogen. This study aimed isolate, identify, characterize metabolic 1,4-D-degrading bacteria from microbial consortium. Three bacterial strains (designated as TS28, TS32, TS43) capable degrading 1,4-D sole carbon energy source were isolated identified Gram-positive Pseudonocardia...

The novel coronavirus disease 2019 (COVID-19) has become a serious health concern worldwide for almost year. This study investigated the effects of selected air pollutants and meteorological variables on daily COVID-19 cases in Dhaka city, Bangladesh. Air data city were collected from 8 April to 16 June 2020 multiple sources. implied spearman's correlation see between different variables. Besides, linear regression Generalized Additive Model (GAM) used investigate association other this...

Biodegradation of 1,4-dioxane, a water contaminant emerging concern, has drawn substantial attention over the last two decades. A number dioxane-degraders have been identified, though many them are unable to metabolically utilize 1,4-dioxane. Moreover, it is considered more preferable use microbial consortia rather than pure strains, especially in conventional bioreactors for industrial wastewater treatment. In present study, stable 1,4-dioxane-degrading consortium was enriched, namely 112,...

This article is based on a study that was conducted to investigate the physicochemical properties of water in Gowain river at pre-monsoon (February May), monsoon (June September) and post-monsoon (October January) seasons determine relationships between quality parameters. The samples were collected from five different sampling stations analyzed laboratory Department Environmental Science Resource Management, Mawlana Bhashani Technology University, Bangladesh. results also showed most...