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Mishra, K. K.
- Critical Analysis of Indian Soda Lime: Scope of Improvement
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Authors
Archana Kumari
1,
K.K. K. Singh
1,
K. K. Mishra
1,
A. Kumar
1,
R.K. Tiwary
1,
S.K. Singh
1,
R. S. Singh
1
Affiliations
1 CSIR- Central Institute of Mining and Fuel Research, Barwa Road Dhanbad, Jharkhand 826001, IN
1 CSIR- Central Institute of Mining and Fuel Research, Barwa Road Dhanbad, Jharkhand 826001, IN
Source
Journal of Mines, Metals and Fuels, Vol 68, No 5 (2020), Pagination: 158-165Abstract
Soda lime is one of the most popular carbon dioxide absorbent materials to be used for closed-circuit life saving safety breathing apparatus in mining industries. A trained rescue person uses it during a situation such as a fire, explosion or emission of toxic gasses in underground mines. This paper evaluates the chemical composition and physical properties of soda lime using specific parameters (moisture, carbon dioxide gas absorption, granule shape and fine particle size) which plays an important role in its application in breathing apparatus. Results indicated that soda lime moisture content, fine grains and hardness ranged between 11.6-18.3%, 0.2-1.9g, and 70-90%, respectively. The CO2 absorption rate was observed to be 20.0 to 57.0 minutes compared to standard UK Protosorb soda lime CO2 (135 minutes). X-Ray Diffraction (XRD), Energy Dispersive Spectroscopy (EDS) and Scanning Electron Microscope (SEM) analysis of the samples were carried out to understand the changes in molecular structure of the material before and after CO2 absorption. The XRD result indicated presence of portlandite (48.5%),calcite (49.6%) and potassium rhenium sulfide telluride cyan acetate (PRSTCA) (1.84%) before CO2 absorption and calcite/ calcium carbonate (89.4%) portlandite (3.38%) and octasodium d-potassium tetra hydrogen dihydroxo tetra telluride dipalladate (7.2%), 20-hydrate was observed after CO2 absorption. EDS of sample 6 indicated presence of carbon (4.94%), oxygen (39.80%) sodium (3.36%) and calcium (51.90%) before CO2 absorption and carbon (6.27%), oxygen (36 96%), sodium (1.37%) and calcium (55.40%) after CO2 absorption.Keywords
Carbon Dioxide (CO2), Soda Lime, Hot Air Oven, Breathing Apparatus, XRD, EDS, SEM.
References
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- Singh, R.S. and Tripathi, N. (2009). Occupational health and safety in coal mining industry. In Proceedings of Recent Trends in Design, Development, Testing and Certification of Ex-equipment, organized at CIMFR, Dhanbad, 29-31 October, 359-371
- BIOCHEMISTRY OF INFLAMMATION IN ASTHMA AN OVERVIEW
Abstract Views :102 |
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Authors
Affiliations
1 Homi Bhabha Centre For Science Education Tata Institute Of Fundamental Research, V N Purav Marg, Mankhurd, Mumbai 400 088, IN
1 Homi Bhabha Centre For Science Education Tata Institute Of Fundamental Research, V N Purav Marg, Mankhurd, Mumbai 400 088, IN
Source
Indian Science Cruiser, Vol 11, No 3 (1997), Pagination: 20-25Abstract
Inflammation is a characteristic feature in asthma that involves a wide variety of cells and the release of many chemical mediators that have multiple effects on various target cells in the respiratory tract. There has been a growing consensus that chronic rather acute inflammatory events are more relevant to understanding the underlying mechanism in asthma. Despite there being great advances in unravelling the biochmical events invloved in aetiology of asthma, the biochemistry of asthmatic inflammation has remained an enigma and eluded the scientific community- Vl Cherry Tomato 1: A Nutritionally Rich Cherry Tomato Cultivar
Abstract Views :166 |
PDF Views:97
Authors
N. K. Hedau
1,
Shri Dhar
2,
G. V. Chaudhari
3,
P. K. Agarwal
4,
Jagdish C. Bhatt
1,
M. Tuti
5,
K. S. Hooda
6,
K. K. Mishra
1,
R. S. Pal
1
Affiliations
1 ICAR-Vivekananda Parvatiya Krishi Anusandhan Sansthan, Almora 263 601, IN
2 ICAR-Indian Agricultural Research Institute, New Delhi 110 012, IN
3 ICAR-Central Coastal Agricultural Research Institute, Ela, Old Goa 403 402, IN
4 Odisha University of Agriculture and Technology, Bhubaneswar 751 003, IN
5 ICAR-Indian Institute of Rice Research, Hyderabad 500 030, IN
6 ICAR-National Bureau of Plant Genetic Resources, PUSA Campus, New Delhi 110 012, IN
1 ICAR-Vivekananda Parvatiya Krishi Anusandhan Sansthan, Almora 263 601, IN
2 ICAR-Indian Agricultural Research Institute, New Delhi 110 012, IN
3 ICAR-Central Coastal Agricultural Research Institute, Ela, Old Goa 403 402, IN
4 Odisha University of Agriculture and Technology, Bhubaneswar 751 003, IN
5 ICAR-Indian Institute of Rice Research, Hyderabad 500 030, IN
6 ICAR-National Bureau of Plant Genetic Resources, PUSA Campus, New Delhi 110 012, IN
Source
Current Science, Vol 123, No 1 (2022), Pagination: 20-22Abstract
No abstract.Keywords
No keywords.Full Text
References
- Hedau, N. K., Dhar, S., Mahajan, V., Agarwal, P. K. and Bhatt, J. C., Hortscience, 2014, 49(1), 105–106.
- GoI, The Gazette of India, Notification No. SO 1480 (E),3-73/2020-SD. IV, Controller of Publications, New Delhi, 1 April 2021.