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As metanil Yellow dye is removed from aqueous solution by batch adsorption on NATPAAC derived from G. aborea bark, we studied the effects of initial dye concentration (Co), initial pH and adsorbent dosage at 29 °C. The experimental equilibrium adsorption capacities (qe) obtained, were 2.35, 1.00 and 0.48 mg/g for Co 25, 50 and 100 mg/L, respectively. The kinetics and mechanism of the adsorption were...
In the present study, six numbers of Schiff bases (1-6) have been synthesized by the condensation of 4-fluorobenzenesulfonamide and substituted aromatic aldehyde. The purities of these Schiff bases have been checked by their physical constants, IR, 1H NMR and 13CNMR spectral data. The antimicrobial activities of these Schiff bases have been evaluated using Bauer-Kirby method.
Oxidation of distyrylketone by quinaldinium chlorochromate [QnCC] in water and acetic acid medium has been studied under pseudo first order condition. The reaction shows unit order dependence each with respect to oxidant and hydrogen ion. The reaction with respect to substrate is found to be fractional order. The reaction rate decreases with increasing the concentration of Mn2+ ions. The reaction...
Climate change has now become an inevitable truth. Anthropogenic CO2 emission accounts for 80% of total GHGs emission and is at the highest level (403 ppm) of CO2 observed in human history. According to the Global climate risk assessment, Nepal contributes only 0.01% of all global CO2 emissions and 0.025% of total GHGs emissions, but ranks 13th in the category of most vulnerable country. Nepal, being...
Municipal refuse may increase heavy metal concentration in soil, even at low levels, and their resulting long-term cumulative health effects are among the leading health concerns all over the world. In this study, we investigated the concentration of heavy metals in soils and edible plant leaves grown in an abandoned dumpsite along Akachi road in Owerri municipality. The soil samples were collected...
Used in traditional medicine, infrared characterization of column eluates and elemental analysis of V. amygdalina was carried out to establish preliminary views of the chemical and mineral element composition of the leaf of this plant. In the five pure eluates obtained, we found that they contained saturated aliphatic esters, nitro-groups conjugated with benzene ring, secondary amines/nitrogen heterocycles,...
Dacyrodes edulis seed were collected peeled, dried and powdered. The oil were extracted by simple method of cold extraction, the extracts were characterized by the Phytochemical analysis, Fourier transform infrared spectroscopy (FTIR) and Gas Chromatography (GC) to identify the fatty acid profile present in the seed oil. The FTIR analysis shows the variation of the peaks which indicate there is synergy...
Miedwie Lake is the biggest post-glacial lake of the West-Pomeranian Voievodship. At the same time it is the fifth of the largest lakes in Poland. Miedwie Lake is situated centrally between three big agglomerations, i.e. Szczecin, Stargard Szczecinski and Pyrzyce. Miedwie Lake has been since 1976, the potable water source for the City of Szczecin. The reservoir is used not only for municipal purposes,...
This study under the title of “the environmental challenges of declining mangroves: a study based on Puttalam District in Sri Lanka” was undertaken to attain the primary objective ‘to identify the factors for the declining of the mangroves in the study area’ and the secondary objectives ‘identify the environmental challenges due to the mangroves declining in the study area and to suggest was to control...
Floods have large environmental consequences for communities and individuals. As most people are aware, the immediate impacts of flooding include loss of human life, damage to property, destruction of plants and trees, and deterioration of health conditions owing to waterborne diseases. For decades, Manila City has been battling with flood risk. The area has been inundated with flood waters several...
This study was designed to investigate the physiochemical and microbiological analysis of canned and bottled fruit juices sold in Owerri metropolis. The samples were subjected to standard microbiological analysis and physiochemical parameters. The titratable acidity of the fruit juice samples ranged from 0.15% to 0.31%, while the ash content of all the samples varied from 0.32% to 0.63%. The total...
In the last five decades, the variation for increase in population and decrease in available clean water is noticeable. To meet with growing water requirements, along with the wastewater from municipal sewage treatment plants, it is critical to consider the reuse of industrial wastewater wherever possible. In the Indian context, this has already been started in some of the big industries, especially...
Malaria is an important health and development challenge in Africa, Animal models most particularly mice, have long been employed to study malaria pathogenesis. This paper describes clinical manifestations due to Plasmodium berghei ANKA infection in juvenile mice as a model for understanding the complications of congenital malaria in neonates. Forty-five juvenile mice (5-7 days old) were acquired...
Biofuels are alternatives to fossil fuels for ensuring energy security and for mitigating climate change. Currently, most biofuels are in the form of a bioethanol that is generated from starch or sugar. Increasing energy demand, food insecurity and ecological concerns leads to evaluating agricultural, forestry and urban lignocellulosic wastes as being very important for energy production. This is...
The prime objective of this study is to assess the socio-economic impact of wetlands in the study area; the secondary objective is to establish the condition of the wetlands and to propose remedial measures. Primary and secondary data were used for this study. As primary data, we employed direct observation, questionnaire survey and group discussion. As secondary data, we utilized statistical data...
The ability of NaOH-activated carbon derived from cassava peels waste to remove MY from aqueous solution was carried out in a fixed-bed column adsorber. The parameters studied included initial solution concentration, Co, carbon bed height and volume flow rate. The temperature of operation and initial solution pH were 29 °C and 5.32, respectively. The optimum adsorption capacity, qe 4.12 mg/g was obtained...
The present study is on the spider fauna of Barasat and Basirhat of North 24 Parganas, West Bengal, India. A total of 23 species belonging to 20 genera and 11 families are sampled during the period August 2016 to July 2017. These include the newly recorded species, Anepsion maritatum (O.P. Cambridge) from the state. The dominant guild is constituted by the Orb web weavers (30.43%). Analysis of their...
The diversity of birds is directly correlated with the structure of the forest. Any interfering with the vegetation produces direct effects on the avifauna through the increase, decrease, or alternation of two key attributes: food and shelter. Thus, the composition of life in the forest is altered as changes occur in vegetation that directly interferes with the population structure of the avifauna,...
Nigeria has relied for several decades on the importation of tallow fat for her industries despite its inconsistency in availability and price in the market The above challenges and the recent soaring value of Dollars to Naira have made it highly necessary for Nigeria to consider the quantum of about 9 tonnes/day of tallow fat sent down the drain in each Nigerian slaughterhouse. Therefore, this research...
The physico-chemical characterization of Prunus amygdalus, Dacryodes edulis and Chrysophillum albidium seed oils were investigated, together with their methyl esters. The vegetable oils were extracted by applying the solvent extraction method, using n-hexane. Prunus amygdalus had the highest oil yield (60.1%), followed by Dyacrodes edulis (55.76 %) and least from Chrysophillum albidium (13.67%). The...
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