Papers by Bipul Kumar Das
Waste water particularly the sewage water is a readily available biodegradable nutrient rich reso... more Waste water particularly the sewage water is a readily available biodegradable nutrient rich resource and reuse of the effluent can enhance the water productivity through plankton production. A study was carried out to assess the abundance and fluctuations of plankton and productivity in different concentration (25%, 50%, 75% and 100%) of sewage water. Selected relevant water parameters such as temperature, pH, dissolved- oxygen (DO), alkalinity, hardness, ammonia -nitrogen (NH3 -N), phosphate- phosphorous (PO4 -P), nitrate-nitrogen (NO3 -N), biological oxygen demand (BOD), chemical oxygen demand (COD), total solid (TS) and total dissolved solid (TDS) in sewage effluent in different treatments were monitored along with certain biological parameters viz. plankton production and primary productivity. The primary productivity and plankton production were observed to be significantly higher (P<0.05) in 100% concentrated sewage water than the other treatments. Key words: Waste water, ...
Journal of entomology and zoology studies, 2019
Water samples were collected from three sites namely Nimtala Ghat, Jelepara and Banshtala Ghat of... more Water samples were collected from three sites namely Nimtala Ghat, Jelepara and Banshtala Ghat of Kalnagini Creek at Kakdwip, West Bengal for six months (January to June, 2019). The pH, conductivity, TDS, salinity, temperature, and turbidity were measured using deluxe water analysis kit. Dissolved oxygen, alkalinity, and free CO2 were estimated using standard method. The analysis of physico-chemical characterization of water of the Kalnagini creek demonstrated that during the monsoon season (May to June) the water quality was deteriorated leading to the great concern of that particular area. Water quality of the Kalnagini creek was better in winter season (January & February, 2019). The result showed availability of highest dissolved oxygen during winter season due to its low water temperature.
Journal of entomology and zoology studies, 2019
Sewage-fed aquaculture is a well-known method of fish cultivation. As the wastewater is generally... more Sewage-fed aquaculture is a well-known method of fish cultivation. As the wastewater is generally contaminated with heavy metals and other pollutants; fishes and other aquatic organisms tend to accumulate them. It creates a serious health problem when these are consumed by a human being. The objective of our study was to assess the concentration of two potentially toxic metals namely cadmium (Cd) and lead (Pb) in tissues of rohu fish (Labeo rohita) collected from the sewage-fed pond of Kolkata. Samples were collected fortnightly from January to June 2014 and the level of metals was determined by Atomic Absorption Spectrophotometer. We observed that accumulation of Cd and Pd in fish tissue ranged from 0.002-0.013μg/g and 0.23-1.84μg/g respectively. Higher concentration was found in internal organs like liver, kidney and gill compared to muscle. It indicates that the conventional method of fish preparation in West Bengal by discarding the offal (i.e., liver, kidney, gills etc) should ...
The fish, meat, eggs, milk, etc. are being sold and purchased in markets every day without any kn... more The fish, meat, eggs, milk, etc. are being sold and purchased in markets every day without any knowledge of pollution threats of heavy metals in human health. To judge the pollution status, the bioconcentration of Cd in meat, offal and whole body (dry weight) of Labeo rohita (Rohu) collected from Sealdah (SDH), Garia (GRA) and Sonarpur (SNP) fish markets around Kolkata of West Bengal were analyzed from November 2016 to April 2017 by Atomic Absorption Spectrophotometer. The highest Cd content in meat and offal of Rohu was 0.882μg/g and 5.488μg/g respectively. The Cd accumulated Rohu sold in those markets were in the order of SNP>SDH>GRA. As the accumulated metal stored mainly in offal, which is often discarded before preparation of the dish, the chances of risks of the fish eaters are comparatively less. The level of this metal in fish meat was below the prescribed permissible limits, but the cumulative effect of all the heavy metals together can be harmful. So, it is the time ...
The Pharma Innovation Journal, 2019
Sewage-fed aquaculture is a popular practice in West Bengal as well as India. But the physicochem... more Sewage-fed aquaculture is a popular practice in West Bengal as well as India. But the physicochemical parameters of the pond should be assessed before using it in fish cultivation. So, we conducted a study in a sewage-fed pond of Kolkata, West Bengal to evaluate ten physicochemical characteristics namely temperature, pH, total dissolved solids (TDS), conductivity, total hardness, dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), phosphate phosphorus and nitrate nitrogen. The analysis showed that the physicochemical parameters of the pond water were moderate for cultural operation except for TDS (446.69mg/l) and the NO3-N (0.80mg/l) and PO4-P (0.21mg/l contents of the pond water were high. But final certification can only be provided after assessing the level of pollutants especially heavy metals.
Acta physiologica, pharmacologica et therapeutica latinoamericana : órgano de la Asociación Latinoamericana de Ciencias Fisiológicas y [de] la Asociación Latinoamericana de Farmacología, 1995
Effect of potassium permanganate, cobalt chloride and vitamin B complex on the haematological par... more Effect of potassium permanganate, cobalt chloride and vitamin B complex on the haematological parameters of common carp Cyprinus carpio were markedly influenced by a treatment of 2.5 mg/l Cd in the laboratory for 96 hours. Hb% and ESR values were increased but the RBC and PCV values were reduced. Treatment of KMnO4 (1 mg/l) or CoCl2 (2 mg/l) induced a further reduction of RBC of the Cd treated fish. But parameters like PCV, MCV and MCH of Cd treated fish were not affected by the treatment of KMnO4 and CoCl2. Intramuscular injection of vitamin B complex did not produce any impact on ESR and MCV values of the Cd treated exposed fish but most of the other parameters of such fish were found comparable to control indicating that vitamin B complex could counteract Cd to reduce its ill effect.
Environment and Ecology, 2013
Indian Journal of Fisheries, 2011
A year long study (2002-2003) was conducted in the Kalyani fish farm (P 1)-a scientifically manag... more A year long study (2002-2003) was conducted in the Kalyani fish farm (P 1)-a scientifically managed fish farm and Kalyani lake (P 2)-a weed infested natural water body, in the heart of Kalyani city, West Bengal, to draw an interrelationship between the primary productivity and nutrients in water as well as soil at different temperature regimes. The study recorded high primary productivity in P 1 corresponding with the high nutrients in water (NO 3-N and PO 4-P) and soil (available nitrogen and available phosphorus). A moderate range of primary productivity was recorded in P 2 in accordance with the moderate ranges of nutrients in water and soil. No significant variation in temperature was recorded between the two water bodies. A strong influence of temperature was observed both on the primary productivity and availability of nutrients. A significant correlation (P<0.05) was recorded between the net primary productivity (NPP) and the available nitrogen and phosphorus of soil. However, no significant correlation (P>0.05) was observed between the NPP and the exchangeable potassium of soil in both the water bodies. Interrelationship between the primary productivity and environmental nutrients of two water bodies
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Papers by Bipul Kumar Das