i-manager's Journal on Chemical Sciences (JCHEM)


Volume 5 Issue 3 September - December 2025

Research Paper

Experimental Analysis of Green Hydrogen through Alkaline Water Electrolysis Method

Abhinav K. Gautam* , Aditya Narayan**, Princy Gautam***, Barshesh Kumar****, Aditya K. Gautam*****
*-**** Department of Electrical & Electronics, SR Institute of Management and Technology, Lucknow, Uttar Pradesh, India.
***** Simon India Ltd., Global Business Park, Gurgaon, India.
Gautam, A. K., Narayan, A., Gautam, P., Kumar, B., and Gautam, A. K. (2025). Experimental Analysis of Green Hydrogen through Alkaline Water Electrolysis Method. i-manager’s Journal on Chemical Sciences, 5(3), 1-8. https://doi.org/10.26634/jchem.5.3.22571

Abstract

This paper presents a comprehensive review and experimental analysis of hydrogen production techniques, with a primary focus on alkaline water electrolysis for green hydrogen generation. Hydrogen is widely recognized as an efficient and clean energy carrier that can be produced from various resources, among which water electrolysis offers an eco- friendly route to high-purity hydrogen. Compared to other production methods, alkaline water electrolysis demonstrates strong potential in terms of sustainability, operational reliability, and environmental compatibility, as it utilizes renewable electricity and releases oxygen as the only by-product without emitting greenhouse gases. The study discusses key hydrogen production technologies, including proton exchange membrane (PEM), solid oxide, and alkaline electrolysis, highlighting their working principles, advantages, and limitations. An experimental setup using an alkaline electrolyte is developed to analyze hydrogen and oxygen generation, and the obtained results closely align with theoretical predictions, confirming the efficiency of the process. The findings contribute to a better understanding of alkaline water electrolysis and provide insights into improving system performance, supporting its development as a commercially viable solution for large-scale green hydrogen production.

Research Paper

Isolation, Purification, Characterization, Immobilization and Food Industrial Application of Polyphenol Oxidase from Bacillus subtilis

Ragini Yadav* , Charu Srivastava**, Manoj Kumar Mishra***, Mohd Ahmad****, Pankaj Gupta*****, Sanjay Mishra******
*-****** Department of Biotechnology, SR Institute of Management and Technology, Lucknow, Uttar Pradesh, India.
Yadav, R., Srivastava, C., Mishra, M. K., Ahmad, M., Gupta, P., and Mishra, S. (2025). Isolation, Purification, Characterization, Immobilization and Food Industrial Application of Polyphenol Oxidase from Bacillus subtilis. i-manager’s Journal on Chemical Sciences, 5(3), 9-18. https://doi.org/10.26634/jchem.5.3.22570

Abstract

This study covers the isolation, purification and characterization of polyphenol oxidase (PPO) from Bacillus subtilis, a bacterium of industrial prominence. The organism was cultured in nutrient broth supplemented with catechol under defined experimental conditions to induce PPO activity. Enzyme extraction involved sonication followed by acetone precipitation and column chromatography for purification. Maximum protein concentration (0.74 mg/mL) was witnessed with 60% acetone, while SDS-PAGE and HPLC analyses confirmed the enzyme's approximate molecular weight and retention time (20 min), respectively, aligning with previous findings. Enzyme activity was optimal at pH 4.0 and 40°C, with rapid decline observed outside this range. Kinetic analysis exhibited a Km of 55 mM for catechol, and enzyme inhibition by copper-chelating agents further verified its classification as a multicopper oxidase. The enzyme was successfully immobilized employing sodium alginate beads, enhancing its thermal and operational stability. Application trials in dough fermentation demonstrated improved rising ability in PPO-treated samples, suggestive of its potential role in bakery industries. Besides, data obtained from the present study provides new insights into the encouraging biotechnological applications of bacterial PPOs in biosensors, food processing and bioremediation.

Research Paper

Chemical Characterization and Standard Compliance Study of 12 mm Stainless Steel 304 Square TMT Bar as per IS 17875:2022

Radhey Shyam* , Anurag Shrivastava**, Ripuranjan Singh***
* Department of Production Engineering, S R Institute of Management and Technology, Lucknow, Uttar Pradesh, India.
**-*** Department of Mechanical Engineering, S R Institute of Management and Technology, Lucknow, Uttar Pradesh, India.
Shyam, R., Shrivastava, A., and Singh, R. (2025). Chemical Characterization and Standard Compliance Study of 12 mm Stainless Steel 304 Square TMT Bar as per IS 17875:2022. i-manager’s Journal on Chemical Sciences, 5(3), 19-24. https://doi.org/10.26634/jchem.5.3.22606

Abstract

Stainless steel Grade 304 (SS 304) is an austenitic stainless steel that is commonly used due to its excellent resistance to corrosion, formability, and weldability. In this study, an in-depth chemical characterisation study of a 12 mm square TMT bar made of SS 304 was conducted and verified the compliance of the tested material with the IS 17875:2022. The chemical elements Carbon, Manganese, Sulphur, Phosphorus, Silicon, Nickel and Chromium levels were evaluated by following standard testing methods described in IS 228. Overall, the results revealed that the tested sample met the compositional requirements of the IS standard. Excluding carbon, tests showed that the carbon content was kept below 0.07%, while Nickel and Chromium levels remained between the optimum 8.0-10.5% and 17.5-19.5%. Metals meeting these compositions should generally retain not only corrosion resistance but are also known to rebuke disintegration and maintain structural integrity, meaning SS 304 is also differentiated for usage in multiple engineering/construction scenarios. Moreover, clearly evident from the provided low percentage of Sulphur and Phosphorus, an added benefit of ductility, possibly renouncing vulnerability to embrittlement, and decreases the chances of failure in a structural application. This study not only confirmed that the SS 304 sample adhered to a set of national standards but also confirmed that the tested material possessed the required metallurgical characteristics for reliable industrial performance. This study concluded the overall importance of standard-based testing for assuring suitability and aiding in further addressing the topic of material-based structural safety for critical infrastructure projects.

Research Paper

A Review on Experimental Analysis of Hybrid Nano-Composite Materials in Thermal Insulation System

Atul Raj* , Pragya Srivastava**, Aditya Chaudhary***, Prakhar Pranjwal****, Raadhikka Gupta*****, Shubhangi Sundaria******
*-*** Department of Production Engineering, S R Institute of Management and Technology, Lucknow, Uttar Pradesh, India.
**** Metallurgical Testing Labs, Pennsylvania, USA.
***** Department of Computer Science Engineering, McMaster University, Ontario, Canada.
****** Avionics Department, Rockwell Collins, Hyderabad, India.
Raj, A., Srivastava, P., Chaudhary, A., Pranjwal, P., Gupta, R., and Sundaria, S. (2025). A Review on Experimental Analysis of Hybrid Nano-Composite Materials in Thermal Insulation System. i-manager’s Journal on Chemical Sciences, 5(3), 25-35. https://doi.org/10.26634/jchem.5.3.22920

Abstract

This study investigates the thermal insulation performance of a hybrid nanocomposite material composed of synergistically blended nanosilica, graphene oxide, and expanded perlite within a polymeric matrix. The experimental analysis focuses on thermal conductivity, heat resistance, and structural integrity under varying thermal loads. The composite samples were fabricated using solution casting and hot-press techniques, and their properties were evaluated through thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and guarded hot plate methods. Results demonstrate a significant reduction in thermal conductivity and enhanced thermal stability, indicating the composite's suitability for energy-efficient insulation systems in industrial and residential applications. The hybrid nanocomposite exhibited improved dispersion of nanoparticles and interfacial bonding, which contributed to its superior performance. This research highlights the potential of nano-engineered composites in advancing the design of high-performance thermal insulation materials.

Review Paper

Recent Advances in Industrial Liquid Mixing: A Comprehensive Review on Improved Detergent Mixer and Competing Detergent Mixer Technologies

Tafadzwa Mukodi* , Stephen Kasukusa**, Godfrey Tigere***
*-*** Technology Centre - Harare Institute of Technology, Harare, Zimbabwe.
Mukodi, T., Kasukusa, S., and Tigere, G. (2025). Recent Advances in Industrial Liquid Mixing: A Comprehensive Review on Improved Detergent Mixer and Competing Detergent Mixer Technologies. i-manager’s Journal on Chemical Sciences, 5(3), 36-41. https://doi.org/10.26634/jchem.5.3.22494

Abstract

Recent advancements in industrial liquid mixing have significantly influenced manufacturing efficiency, product quality, and operational sustainability within the detergent industry. This comprehensive review critically evaluates the technological evolution, design optimizations, and industrial applications of an Improved Detergent Mixer in comparison with traditional mixing technologies, including variable speed drive (VSD) mixers, pan mixers, ribbon blenders, and multi-shaft homogenizers. Emphasis is placed on process intensification, energy efficiency, mixing uniformity, and maintenance strategies derived from empirical data and simulation studies. The synthesis includes a wide array of academic resources spanning computational fluid dynamics (CFD), process engineering, industrial case studies, and technical guidelines, offering a robust benchmarking of mixer technologies for detergent formulation. By integrating recent literature and expert technical reports, this review aims to provide a foundational guide for industrial practitioners, equipment designers, and researchers seeking to optimize mixing processes and select the most appropriate mixer configurations for current and future detergent production needs.