ALTERATION OF BIOCHEMICAL PARAMETERS IN THE BREEDING CYCLE OF MYSTUS VITTATUS (BLOCH.) EXPOSED TO MUNICIPAL SEWAGE AT BASTI CITY (U.P.)

Biochemical disorder in fishes are intimately associated with inclusive physiological hindrance. Many types of biochemical faults and deformity in the metabolism of carbohydrates, Proteins, fats and Nucleic acids are finding in different tissue of environmentally  tressed fishes. The responsibility of gonadial tissue i.e. testes and ovary are upgrade many times during the breeding phase of the reproductive cycle of teleost fishes. Any biochemical deformity in their tissues would adversely affect the reproductive activity of fish population. Fresh water pollution mainly of the Kuwano river is caused by runoff from house drains, street disposal, sewage and effluents from small and large scale of industries situated nearby the river. On spot observations indicate that heavy fish mortality has been occurring in the areas in the river Kuwano contaminated by municipal sewage. The examined biochemical parameters were glycogen, amino acids, and cholesterol. The acute toxicity and bioassays of sewage exposed to test fish Mystus vittatus has been conducted for its three breeding phases i.e. pre-spawning, spawning and post-spawning

Effect of operating parameters on coal gasification

Abstract Coal combustion and gasification are the processes to utilize coal for production of electricity and many other applications. Global energy demand is increasing day by day. Coal is an abundant source of energy but not a reliable source as it results into high CO2 emissions. Energy industries are expected to decrease the CO2 emission to prevent global warming. Coal gasification is a process that reduces the CO2 emission and emerges as a clean coal technology. Coal gasification process is regulated by several operating parameters. A Number of investigations have been carried out in this direction. A critical review of the work done by several researchers in the field of coal gasification has been compiled in this paper. The effect of several operating parameters such as coal rank, temperature, pressure, porosity, reaction time and catalyst on gasification has been presented here

Gasification kinetic studies of low volatile weakly caking coal

Abstract Present investigation focuses on the fractional conversion of low volatile weakly caking coal (LVWC) under the standard set of operating conditions for gasification. For this purpose, samples of LVWC of different ash content have been collected from Kusunda Area of Bharat Coking Coal Ltd. Gasification results were validated using Homogenous and Shrinking Core kinetic models and the suitability of selected samples for gasification was assessed by estimating the activation energy. The values of activation energy for LVWC samples were obtained in the range of 25.17–44.09 kJ/mol. Further, empirical models were developed to correlate the response of interest with the input variables (temperature, residence time and CO2 flow rate). The significance of these developed empirical models was checked using analysis of variance (ANOVA)