scholarly journals Seasonal Variations in Physico-Chemical Properties and Biodiversity in Betana Pond, Eastern Nepal

Our Nature ◽  
1970 ◽  
Vol 8 (1) ◽  
pp. 212-218
Author(s):  
B. Niroula ◽  
K.L.B. Singh ◽  
G.B. Thapa ◽  
J. Pal
Keyword(s):  
Carbon Dioxide ◽  
Seasonal Variations ◽  
Aquatic Macrophytes ◽  
Chemical Properties ◽  
Chloride Content ◽  
Pond Water ◽  
Chemical Parameters ◽  
Seasonal Fluctuations ◽  
Physico Chemical ◽  
Different Characteristics

A total of 62 species of aquatic macrophytes belonging to 33 families (Alga 1, Bryophyte 1, Pteridophytes 5, Angiospermic dicots 25 and monocots 31) and 38 species of aquatic macro-fauna (Birds 17, Reptiles 3, Amphibians 3, Fishes 12, Molluscs 1 and Arthropods 2) were recorded from Betana pond, eastern Nepal. Physico-chemical parameters of the pond water displayed different characteristics with seasons. More seasonal fluctuations in turbidity (0.76-26.01 NTU), carbon dioxide (4.58-73.92 mg/l) and chloride content (2.0-7.0 mg/l) were recorded in the pond.DOI: 10.3126/on.v8i1.4330

scholarly journals Physico-chemical properties of water of Ramshagar dighi, the largest man made historical reservoir in northern Bangladesh

2018 ◽  
Vol 23 ◽  
pp. 29-37
Author(s):  
Ashaduzzaman ◽  
MJ Hossain ◽  
S Akther
Keyword(s):  
Carbon Dioxide ◽  
Dissolved Oxygen ◽  
Water Temperature ◽  
Air Temperature ◽  
Water Depth ◽  
Chemical Properties ◽  
Current Status ◽  
Chemical Parameters ◽  
Monthly Average ◽  
Physico Chemical

Ramshagar dighi is a larger historical man made reservoir (Dighi, Bengali meaning) situated at Tajpur village in Dinajpur, Bangladesh. This study was aimed to estimate current status of physico-chemical variables of water of Ramshagar dighi at Dinajpur District, Bangladesh. Monthly average changes in physico-chemical parameters such as water temperature, total dissolved oxygen, air temperature, humidity, rainfall, water depth and pH of water were analyzed for the period of 11 months from May 2011 to March 2012. The average air temperature (°C) at the study area of Ramshagar dighi at Dinajpur District was determined as 24.97 ± 4.92. Our present study showed that physico-chemical properties of water in Ramshagar dighi were monthly average of water temperature (°C) as 24.68 ± 4.77, air temperature (°C) 24.97 ± 4.92, humidity as 82.075 ± 4.14, rainfall as 1534.5 mm, water depth as 9.10 m ± 1.286, pH as7.67± 0.48 and carbon dioxide as 0.85 ± 0.92 as well as dissolved oxygen as 4.65 ± 0.62 respectively during the period of May 2011 to March 2012. Therefore, present study was conducted to assess physico-chemical properties of water of Ramshagar dighi, Dinajpur, Bangladesh.J. bio-sci. 23: 29-37, 2015

scholarly journals Water quality and biological diversity of Budhoholi Wetland, Jhapa, East Nepal

2017 ◽  
Vol 7 (1) ◽  
pp. 97-104
Author(s):  
Bhanu Kumar Bhattarai ◽  
Diwas Dahal
Keyword(s):  
Water Quality ◽  
Riparian Vegetation ◽  
Aquatic Macrophytes ◽  
Biological Diversity ◽  
Chemical Properties ◽  
Permissible Limit ◽  
Slight Variation ◽  
Chemical Parameters ◽  
Physico Chemical

The present study deals with the physico-chemical parameters and biological diversity of Budhoholi at Sani-Arjun Municipality -7 Jhapa, from July to October, 2015. The physico-chemical properties of water were within the maximum permissible limit with slight variation in some parameters. The biological diversity was found to be rich. Riparian vegetation consisted of 21 herbs 13 shrubs, 11 trees and 4 climbers, 9 aquatic macrophytes and 21 species of fishes. The overall result of the lake indicated that the lake is not disturbed and is not polluted.

Physico-Chemical Properties of the Fish Pond Water in CMU, Bukidnon, Philippines

2019 ◽  
Vol 23 (2) ◽  
Author(s):  
Gloria Jesusa Baltazar ◽  
Keyword(s):  
Chemical Properties ◽  
Pond Water ◽  
Fish Pond ◽  
Chemical Parameters ◽  
Physico Chemical

fish pond, physico-chemical parameters, CMU

scholarly journals Pollution Discharge Scenario of Metallurgical Industries along Dombivali Industrial Belt of Mumbai, India

2013 ◽  
Vol 22 ◽  
pp. 40-47
Author(s):  
P.U. Singare ◽  
S.S. Dhabarde
Keyword(s):  
Pollution Control ◽  
Industrial Wastewater ◽  
Ph Value ◽  
Chemical Properties ◽  
Chloride Content ◽  
Chemical Parameters ◽  
Toxic Heavy Metals ◽  
Treatment Techniques ◽  
Physico Chemical ◽  
One Year

The paper deals with monitoring of pollution arising due to metallurgical industries located along the Dombivali industrial belt of Mumbai, India. The study was carried for the period of one year from June, 2012 to May, 2013 to study the level of toxic heavy metals and the physico-chemical properties of waste water effluents discharged from the above industries. The concentration levels of Cu, Ni, Cr, Pb, Fe and Zn were found to be maximum of 41.00, 1.47, 5.97, 2.55, 46.86 and 12.97 ppm respectively during winter and summer seasons starting from December to May. The pH value was found to be maximum of 10.30 in the month of February, while the conductivity was found to be maximum of 25067 μmhos/cm in the month of July. The majority of physco-chemical parameters like salinity, chloride content, and total solids (TS) were observed to be maximum in the month of June having values of 6.32, 2411 and 20738 ppm respectively. The high cyanide (0.09 ppm), phosphate (117.21 ppm), COD (13640 ppm) and low DO content of 5.79 ppm were observed in the effluents released during the month of February. The alkalinity content in the effluent was maximum of 1395 ppm in the month of May. The hardness and BOD values of the effluents were reported maximum of 490 and 557 ppm in the month of October. From the results of the present investigation it seems that the time has come to implement proper effluent water treatment techniques and enforcement of pollution control by the regulatory authority on the indiscriminate discharge of industrial wastewater into water bodies.

The effect of origin and physico-chemical properties on the kinetics of reduction of mixed NiO-Fe2O3 oxides with hydrogen

1986 ◽  
Vol 51 (10) ◽  
pp. 2098-2108 ◽  
Author(s):  
Milan Pospíšil ◽  
Jan Topinka
Keyword(s):  
Mixed Oxides ◽  
Mutual Influence ◽  
Spinel Phase ◽  
Chemical Properties ◽  
Inhibitory Effect ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Preliminary Annealing ◽  
Kinetics Of ◽  
Kinetics Of Reduction

We investigated the effect of origin and some physico-chemical parameters on the kinetics of reduction with hydrogen of two series of mixed NiO-Fe2O3 oxides differing by their composition, the character of their precursors (mixed crystalline nitrates and coprecipitated hydroxides) and their decomposition temperature.This effect manifested itself by different magnitudes of specific surfaces of the mixed oxides and coherent regions of present phases as well as by different oxidizing abilities of the surface and differences in morphology and phase composition of corresponding samples in both series investigated. Nonlinear or nonmonotonous composition dependences of physico-chemical parameters investigated point to a mutual influence of individual components, which is also a function of the system origin and which modifies its reactivity during its reduction with hydrogen. The kinetics of the reduction was studied thermogravimetrically at 320-410 °C. The reduction of oxides of the hydroxide origin is catalytically accelerated by primarily reduced nickel, whereas in corresponding samples of the nitrate series, the total NiO is bound to the spinel phase and the reduction is delayed. Experimental IR spectra, the effect of preliminary annealing and DTA of the mixed oxides point to an inhibitory effect of water, which is constitutionally bound in trace admixtures of the goethite phase, on the kinetics of reduction of samples in the hydroxide series.

scholarly journals Physico-Chemical Analysis of Culture Pond for Induced Pearl Production in Lamellidens marginalis

2020 ◽  
Vol 26 (2) ◽  
Author(s):  
Vijiyata Singh Rathour ◽  
Vijay Kumar Yadav
Keyword(s):  
Chemical Analysis ◽  
Pond Water ◽  
Botanical Garden ◽  
Total Alkalinity ◽  
Total Hardness ◽  
Chemical Parameters ◽  
Colour Temperature ◽  
Physico Chemical ◽  
Calcium Magnesium ◽  
Healthy Growth

Bioassay experiments were carried out in order to evaluate values of physico-chemical parameters of the cultured pond water for induced pearl production in Lamellidens marginalis. The pond was located at Botanical garden of Bipin Bihari P.G. College, Jhansi. The parameters included for this study were Colour, Temperature, Transparency, pH, Free CO2 , DO, Total Hardness, Calcium, Magnesium and Total Alkalinity of cultured pond water and to maintain them for the healthy growth of mussels during the whole culture period for obtaining designer pearls.

scholarly journals STUDY OF PHYSICOCHEMICAL CHARACTERISTICS OF BIRD VALLEY’S QUARRY WATER PCMC, MAHARASHTRA

2021 ◽  
Vol 6 (2) ◽  
pp. 18-24
Author(s):  
Shashikala Kokcha ◽  
Harsha Chatrath
Keyword(s):  
Seasonal Variations ◽  
Water Samples ◽  
Physicochemical Characteristics ◽  
Point Of View ◽  
Present Condition ◽  
Chemical Parameters ◽  
Standard Methods ◽  
Drinking Purposes ◽  
Physico Chemical ◽  
Methods And Techniques

Purpose of the study: The purpose of this study is to make sure that the Bird valley’s quarry water is suitable for drinking purposes or not and to monitor the seasonal variations in the physico-chemical parameters of this quarry water. Methodology: Water samples from the quarry were collected in clean and sterilized polyethylene bottles. Water samples were collected from different points and mixed together to get an integrated sample. Some of the selected physico-chemical parameters of the quarry water have been analyzed. Results were compared with standard limits of IS: 10500-2012. All the parameters were analyzed in the laboratory by using standard methods and techniques. Main Findings: As per the obtained results this quarry water contains a very large number of Coliforms detected in the months of September and December and in June month Coliform count was 33 CFU/ml. This overall result for coliform is making this quarry water unfit for domestic purposes. Applications of this study: This study helps us to understand the current condition of this quarry water and also enables us to know whether the quarry water is fit for drinking purposes. It also enables us to know whether this quarry water can be used for domestic purposes after the treatment. Novelty/Originality of this study: Bird valley’s quarry water has not been analyzed from this point of view till date. This study will help us to understand the present condition of the water.

scholarly journals Electrohydrodynamic, oven and natural drying of mint leaves and effects on the physiochemical indices of the leaves

2020 ◽  
Vol 66 (No. 3) ◽  
pp. 89-96
Author(s):  
Chibuzo Nwankwo ◽  
Chigozie Francis Okoyeuzu ◽  
Ikpeama Ahamefula
Keyword(s):  
Carbon Dioxide ◽  
Food Waste ◽  
High Efficiency ◽  
Biogas Production ◽  
Chemical Properties ◽  
Oxygen Demand ◽  
Liquefied Petroleum Gas ◽  
Physico Chemical ◽  
Efficiency Performance ◽  
Natural Drying

The efficiency of three modified plastic digesters (3.6 m<sup>3</sup> each) using food waste for biogas generation in cooking food was evaluated. The experiment was laid out based on a completely randomised design. A plastic tank was modified as a biodegradation system for food waste digestion to generate a biogas. The biochemical and chemical oxygen demand ranged from 44.58 to 49.62% and 130.42 to 139.20%, respectively, before digestion, but decreased significantly (P &lt; 0.05) after digestion. The pH of the fermenting slurry fluctuated (6.24–6.86) and an average biogas of 0.574 m<sup>3</sup> (505–601 L·day<sup>–1</sup>) per day was generated from the three experimental waste proportions which would be sufficient to cook three meals per day for 3 to 4 people. The methane gas significantly increased (P &lt; 0.05) while the carbon-dioxide significantly decreased (P &lt; 0.05) at the peak of the biogas production. The generated biogas significantly cooked (P &lt; 0.05) faster than kerosene, but not faster than liquefied petroleum gas. The flammable biogas generation and high significant (P &lt;0.05) percentage change in the physico-chemical properties of the wastes after digestion implied high efficiency performance of the digesters modified from the plastic tanks.

PHYSICO-CHEMICAL PROPERTIES OF A NEW CLAY-BASED SORBENT

2019 ◽  
Vol 9 (1) ◽  
pp. 52-56
Author(s):  
Sergey V. STEPANOV ◽  
Olga N. PANFILOVA ◽  
Kristina K. ADDUGAFFAROVA
Keyword(s):  
Ion Exchange ◽  
Chemical Properties ◽  
Thermal Method ◽  
Chemical Parameters ◽  
Aluminum Oxides ◽  
Ir Spectrometry ◽  
Physico Chemical ◽  
Preliminary Preparation ◽  
Physical And Chemical ◽  
Finished Sample

The main physical and chemical parameters of a new sorbent developed on the basis of the minerals of the Samara region: clays, peat and dolomite are considered. The particle size of the clay after grinding at the stage of preliminary preparation was less than 1 nm, which relates them to highly dispersed materials. A chemical analysis of the composition of the components showed a high content of silicon and aluminum oxides, which possess ion exchange properties, and also made it possible to assign clays to montmorillonite rocks. The modification of the sorbent was carried out by thermal method. The density of the finished sample was 1.8 g / cm3. The method of scanning electron microscopy showed that the structure of the finished sample belongs to spongy bodies. The method of IR spectrometry confirmed the presence of functional groups in the crystal lattice of the sorbent, which cause not only the physical, but also the ion exchange and chemical nature of sorption.

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