(Research Article) Estimation of Environmental Impact from Rice Mill Cluster Shashidara P.S 1* , N. Nagesha 2 , Badagi Raghavendrachari 3 1*,2,3 Department of Industrial & Production Engineering, UBDT College of Engineering Davanagere, Karnataka, INDIA Abstract The developed and developing countries in the world currently facing many challenges put forth by rapid growing population and in satisfying its needs. Though technology is progressing in hand with evolving industrial requirements, still industries are failing in conserving the biosphere. Globally the India has stood fourth in GHG emissions with 1725.76 million metric tons, 1.45 per capita CO2 emissions during year 2011. In India electricity generation, Manufacturing and construction, transportation and agriculture are the major sectors, which contribute for the net annual GHG emissions. Approaching towards food processing industries, the rice mills are found to have appreciable share in Industrial GHG emissions inventory. Present work gives the estimation of GHG emissions from chosen 40 rice mills of Koppal cluster per standard working month. The energy consumption data is collected through questionnaire based survey. The GHG emissions estimation is made using tier 1 and tier 2 approaches as per revised 1994 IPCC guidelines. Keywords: Global warming potential, Green House Gases, types of Pollution, Rice mills, Estimation of GHG emissions. 1. Introduction The phenomenon of warming up of the atmospheric temperature in relation to solar radiation is termed as Green House effect. In this incident, some portion of heat from solar radiation is retained in atmosphere by Green House Gases (GHG), which absorbs a portion of heat from sun light and reflects back to the earth’s surface thereby increasing the atmospheric temperature. For estimating this amount of heat trapped by GHG the Global Warming Potential (GWP) is used [1], which compares the heat absorbed by a gas of certain mass in relation to that of Carbon dioxide (CO2). GWP is conveyed as a factor of CO2 and it is normally evaluated for a specific period of 20, 100 or 500 years. Green House Gases mainly comprises Carbon dioxide (CO2), Methane (CH4), Nitrous oxide (N2O), Ozone, Chlorofluoro carbons-11 (CFC-11), Hydrofluoro carbons-23 (HFC-23) and Perfluoro carbons (CF4). In addition to these gases, GHG also contains other gases in smaller proportions. The industrial activities [2], energy production sector, Airways, Domestic appliances like refrigerators, Air Conditioners are the major contributors for the GHG emission Inventory. The fossil fuel burning claims as chief cause with 75% GHG emissions. As the GHG emission increases the Green House effect increases, consequently the air pollution due to accumulated poisonous gases in the atmosphere causes harmful effects on the human health and ecology. Globally the GHG emissions gradually increased in the course of past 30 decades due to boom of industries [3], vehicles, and food requirements in quantity. Increased population and its demands can be indicated as one of the core sources for the augmentation of global warming effect. Globally the awareness regarding harmful effects of pollution through industries and Green House effect endured through 1960’s. In the world, the governmental and non-governmental organizations, which strived for reduction of GHG emissions are UNEP (United Nations Environment Programme), UNFCC (United Nations Framework Convention on Climate Change), IPCC (Intergovernmental Panel on Climate Change), European Union’s Restriction of the Use of Certain Hazardous Substances in Electric and electronic equipment (RoHS in EEE), Waste Electronics and Electrical Equipment (WEEE), Montreal Convention and Kyoto Protocol. India, which is a developing nation, stood fourth in GHG emissions across the world with the share of 6% [4]. India has accounted for the GHG emissions of about 2.3 GtCO2 during the year 2014. Using the guidelines of UNEP, UNFCC and IPCC in India the centre has took well organized planning in mitigating the GHG emissions below 2700 million metric tons by the year 2030 and furthermore it has stipulated certain norms, rules and regulations to be executed through Central Pollution Control Board and State Pollution Control Boards. According to IPCC, during the year 2014 the major sectors around the globe which contributed for GHG emissions INTERNATIONAL JOURNAL OF DARSHAN INSTITUTE ON ENGINEERING RESEARCH & EMERGING TECHNOLOGIES Vol. 11, No. 1, 2022 www.ijdieret.in IJDI-ERET * Corresponding Author: e-mail: bannikodu1987@gmail.com, Tel-+91-97437-56508 ISSN 2320-7590 (Print) 2583-3863 (Online)  2022 Darshan Institute of Engg. & Tech., All rights reserved