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The present study focuses on examining the fate of coal constituents—carbon, sulphur, nitrogen and chlorine from coal blend to coke oven wastewater. Further, the impact of coal constituents and coke making process on wastewater quality has studied and analyzed the effects with plant data. Understanding helps in development of coke oven wastewater quality prediction model using machine learning techniques. A reliable model helps in minimize the operation costs and stable operation of treatment plant. The developed model is implemented and validated using plant scale data obtained for coke plant at Tata Steel Jamshedpur. The model provided accurate predictions of the effluent stream of by product plant, in terms of chemical oxygen demand (COD) and total dissolved solids (TDS) when using coal constituents and coke making process parameters as an input. Implementation strategy of model helps to control the wastewater quality within environmental limit with ease.

In the recent time, the demand of complex castings is continuously increasing, particularly in the field of aerospace, automobile, medical, food processing, and machine tool industry. Investment casting being the oldest manufacturing process is always considered as the most preferred route for producing intricate near-net shape parts. Making undercuts, channels, or passage are the most critical and challenging activity in producing complex shape geometry. For making such castings, cores are used along with the investment molds. In practice cores, in foundries are made from different material such as sand, soluble wax, urea, salt, and ceramic. Among these, the ceramic material-based cores possess better properties compared to any other core materials. Presently, varieties of ceramic cores are used in investment casting foundries. The properties of final cast part significantly affected by the properties of ceramic core, which directly depend on the various core composition. Many researchers have made and tested cores with various ceramic compositions; however, no published research was found which summarizes them in scientifically. This paper presents a study on ceramic core material and core manufacturing process being used in investment casting. The article will be helpful for foundrymen in selecting the appropriate composition of ceramic core material and its manufacturing process based on the part-specific requirements.

This paper is prepared to design microstrip patch aerial for 2.45/5.2 GHz with three shorted pins. The antenna contains patch, shorting pins, substrate, and ground plane. Overall size of antenna is 36 × 44 × 1.57 mm3. It is shown that shorted pins increase the impedance matching of the antenna and its radiation pattern. Resonating frequency of aerial is 2.45/5.2 GHz. As per designs and studies, it depicts that the antenna’s resonant frequency is directly related to shorting pins. The proposed aerial has various applications on resonant frequency and it has Band Width around 20/121 MHz.