Dr. Sharad Gokhale Professor of Environmental Engineering

Urban Air Pollution and Environmental Noise

Tel:+91 361 258 2419 (O)

Tel:+91 361 258 4419 (R)

Fax:+91 361 258 2440 (Civil Office)

E-mail: sharadbg@iitg.ernet.in

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Notice for research students:




     Ph.D Environmental Engineering, IIT Delhi, 2004.



Research Interests:

  • Mitigations - Urban air pollutants; Road traffic noise; Urban black carbon and GHG emissions from traffic and agricultural sectors; VOCs;

  • Episodic air quality in traffic corridors;

  • Reduction of human exposure to air pollutants and environmental noise;

  • Indoor air pollutants originated in workplaces and migrated from outdoors.

Research Team:

No. Name Position Since
1 Susant Padhi Ph.D July 2012
2 Mitali Sahu Ph.D July 2012
3 Ardhendu Shekhar Ph.D July 2013
4 B. Hazarika Ph.D July 2014
5 Dr. Jayashree Dutta Institute Post Doctoral Fellow December 2014
6 Nikhil A. M. Tech July 2016
7 Prabhat V. M. Tech July 2016
8 Rahul Choudhury JRF May 2016
9 Sidharth Adhikari JRF May 2016
10 Gulab Singh Ph.D July 2016
11 Argha Kamal Ph.D July 2016



Peer reviewed international journals:

Last 5 years:

  1. Cyrille, M. A., David, M., Andre, L., Ebenezer, M., and Gokhale, S. (2016) Evaluating impacts of two-wheeler emissions on roadside air quality in the vicinity of a busy traffic intersection in Douala, Cameroon. Air Quality, Atmosphere and Health, Vol. ***, **-***.

  2. Padhi, S. and Gokhale, S. (2016) Benzene biodegradation by indigenous mixed microbial culture: Kinetic modeling and process optimization. Int. Biotechnology and Biodegradation, Vol. ***, **-***.

  3. Bhautmage, U. and Gokhale, S. (2016) Effects of moving-vehicle wakes on pollutant dispersion inside a highway road tunnel. Environmental Pollution, Vol. 218, 783-793.

  4. Choudhary, A. and Gokhale, S. (2016) Urban real-world driving traffic emissions during interruption and congestion. Transportation Research, Part D, Vol. 43, 59-70.

  5. Padhi, S. and Gokhale, S. (2016) Benzene control from waste gas streams with a sponge-medium based rotating biological contactor. Int. Biodeterioration and Biodegradation, Vol. 109, 96-103.

  6. Gokhale, S. (2016) Effects of engineered nanomaterials released into the atmosphere. J. Hazard. Toxic Radioact. Waste, Vol. 20 (1), B4015005(1)-B4015005(12).

  7. Thaker, P. and Gokhale, S. (2016) The impact of traffic-flow-patterns on air quality in urban street canyons. Environmental Pollution, Part A, Vol. 208, 161-169.

  8. Singh, N. P. and Gokhale, S. (2015) A method to estimate spatiotemporal air quality in an urban traffic corridor. Science of the Total Environment, Vol. 538,458-467.

  9. Abhijit, KV and Gokhale, S. (2015) Passive control potential of trees and on-street parked cars in reduction of air pollution exposure in urban street canyons. Environmental Pollution, Vol. 204, 99-108.

  10. Durga Ch., S. and Gokhale, S. (2015) Monitoring and assessment of O3 and PM1 in the microenvironment of a workplace. Environmental Modelling and Assessment, Vol. 20 (5), 521 - 534.

  11. Padhi, S. K. and Gokhale, S. (2014) Biological oxidation of gaseous VOCs - rotating biological contactor a promising and eco-friendly technique. The Journal of Environmental Chemical Engineering, Vol. 2(4), 2085-2102.

  12. Gokhale, S. (2012) Impacts of traffic-flows on vehicular-exhaust emissions at traffic junctions. Transportation Research – Part D Transport and Environment, Vol. 17 (1), 21-27.

  13. Gokhale, S. (2011) Traffic-flow pattern and meteorology at two distinct urban traffic junctions with impacts on air quality. Atmospheric Environment, Vol. 45(10), 1830-1840.

  14. Pandian, S, Gokhale, S and Ghoshal, AK (2011) An open-terrain line source model coupled with street-canyon effects to forecast carbon monoxide at traffic roundabout. Science of the Total Environment, Vol. 409 (6), 1145-1153.


  1. Choudhary, A. and Gokhale, S. (2015) Using traffic volume and speed to quantify urban traffic congestion. 3rd Conference of Transportation Research Group of India (CRTG), Paper No. 448, 17-20 December 2015, Kolkata, India.

  2. Padhi, S. K. and Gokhale, S. (2015) A hybrid rotating biological filters to control VOC from waste gas streams. Int. Conf. CHEMCON 2015, 27-30 December 2015, IIT Guwahati, India.

  3. Padhi, S. K. and Gokhale, S. (2015) Optimization and modelling of growth kinetics during benzene biodegradation in batch reactors. Int. Conf. on New Horizons in Biotechnology, 22-25 November 2015, Trivandrum, India.

  4. Hazarika, B. and Gokhale, S. (2015) Secondary pollutants from VOCs in urban indoor air. National Conference on De-polluting Indian Cities, IDC Foundation, 18-19 September 2015, New Delhi.
  5. Singh, N. P. and Gokhale, S. (2015) Estimation of emission source reduction using best-fit statistical distribution of measured pollutants within an urban traffic corridor. National Conference on Challenges in Environmental Research, Indian Institute of Technology Guwahati, June 2015, India.

  6. Padhi, S. K. and Gokhale, S. (2015) Biodegradation of an indigenous microorganism in a batch reactor for gaseous VOC control. Bio Tech 2015., Int. Conf. on Advances in Biotechnology, IIT Kanpur, 13-15 March 2015.

  7. Choudhary, A. and Gokhale, S. (2015) The study of effect of speed and acceleration on auto-rickshaw exhausts emission during urban peak flow condition. Int. Conference on Sustainable Energy and Built Environment, Paper No. TR003,12-13 March 2015, VIT University Vellore, India.

  8. UKIERI (2011) Transport, land use strategies and technology interventions in urban air quality management. February 9-20, 2011, IIT Delhi, New Delhi, India

Book chapter/Report/Special issue/Editorial/Open journal:


  1. Gokhale, S. (2015) Behavior and fate of natural and engineered nanomaterials in atmosphere. Chapter 10 in Nanomaterials in the Environment, S. K. Brar, T. C. Zhang, M. Verma, R. Y. Suryapalli, and R. D. Tyagi. American Society of Civil Engineers (ASCE) pubs., Reston, VA, 265-291.

  2. Gokhale, S. (2012) Guest editor, A special issue on "Urban Air Pollution Exposure - Measurement, Modelling and Assessment." The Open Atmospheric Science Journal, Bentham Open, Editorial, Vol. 6, 2012, ISSN 1874-2823, pp 61-92.  Link - http://www.benthamscience.com/open/toascj/openaccess2.htm

Teaching - Theory/Lab Courses:


  1. CE201: Surveying (3-0-2:8)
  2. ME111: Engineering Drawing (1-0-3:6)
  3. CE307: Environmental Engineering - I (3-0-2:6)
  4. CE315: Environmental Engineering Laboratory (0-0-3:3)
  5. CE570: Air Pollution and Industrial Waste Management (3-0-0:6)
  6. CE661: Air Quality Modeling (3-1-0:8)


  1. CE523: Air and Noise Pollution (3-0-2:8)
  2. CE527: Design of Environmental Engineering System (0-0-2:2)
  3. CE551: Principles of Water Quality & Environmental Legislations (3-0-2:8)
  4. CE570: Air Pollution and Industrial Waste Management (3-0-0:6)
  5. CE661: Air Quality Modeling (3-1-0:6)
  6. NRS171: Environmental Modeling for Air and Noise (at TERI-SAS) (3-0-0:6)

Short-term training course:

  • A short-term training on “Recent trends and technologies in industrial waste treatment and management” from December 3rd to 7th, 2007, sponsored by AICTE under QIP, IIT Guwahati.
  • A TEQIP course  on "Air quality - modeling and management" from April 4 - 8, 2016, sponsored by MHRD, IIT Guwahati.

Thesis Guidance:

Postgraduate (PhD and PDF):

Sr. No. Name of students Thesis title Year
1 Suresh Pandian Traffic flow characteristics and impacts on air quality at urban roundabout junction 2006-2011
2 Arti Chaudhary Traffic congestion and emissions 2012-2016
3 N. Premananda Singh Modeling of exposure to air pollution 2012-2016
4 Mitali Sahu Forecasting of urban episodic air quality 2012-2016
5 Susant Padhi Industrial air pollution control 2012-2016
6 A. Shekhar Urban black carbon 2013-
7 Dr. Jayashree Dutta (PDF) GHGs reduction by an eco-friendly conservation agri system 2014-2016
8 B. Hazarika Indoor air quality 2014-
9 Gulab Singh Air quality modeling 2016-
10 Argha Kamal Noise and air quality 2016-

PhD interns:

Sr. No. Name of students Thesis title Year/Univ.
1 Buddhi Sapkota Indoor air dispersion simulation using CFD 2015/Tribhuvan University, Nepal
2 Cyrille Mezoueadiang Air quality modeling at traffic intersection 2015/Douala University, Cameroon

Postgraduate (MSc/M.Tech):



Name of students Thesis title Year
1 Nikhil A. Roadside black carbon and traffic impacts 2016-17
2 V. Prabhat Urban neighborhood black carbon 2016-17
3 Vishal Verma Numerical simulation of effects of ventilation on indoor air pollution of buildings next to a street canyon 2015-16
4 Vinod Joshi Deposition of particles in trafficked corridors using biomonitors 2015-16
5 Vidyasagar G. Using CFD to simulate indoor air quality and at a workplace 2014-15
6 Amol Kamble ANN and GA for the prediction of noise levels at an urban traffic junction 2014-15
7 Uday Bhoite A method to analyze spatio-temporal air quality 2014-15
8 Utkarsh Bhautmage Numerical simulation and field validation of CO dispersion in road tunnels 2013-14

Prashant A. Thaker

Numerical simulation of CO dispersion in an urban street canyon with heterogeneous traffic 2013-14

Abhijit K V

Investigation of pollutant dispersion characteristics in street canyon in presence of trees and on-street car parked cars 2013-14
11 Abhay Ananad Simulation of CO dispersion in an underground parking lot using CFD. 2012-13
12 Nilesh jain Mixing coefficient due to wind and mechanical turbulence in an urban street canyon using CFD 2012-13
13 Satya Durga Ch. Ozone and aerosols in the indoor environment of a workplace 2012-13
14 Anusha Kumari A. Traffic characteristics and emission at road intersections. 2011-12
15 Ravindra Patil Uncertainty analysis in air quality dispersion modeling 2008-09
16 Siddilingesh Kambi Indoor-outdoor relationship for carbon monoxide in residential and public buildings located near urban traffic intersection. 2008-09
17 Nagabhushan B. Development of an indoor-outdoor relationship for PM2.5 concentrations in residential and public buildings. 2008-09
18 Praveen Godgula Estimation of on-road emission factors of PM2.5 and PM10 at urban roundabout traffic intersection using semi-empirical modeling approach 2007-08
19 Subhankar B. An AERMOD air quality model to evaluate the impacts of Guwahati Refinery emissions. 2006-07
20 Gokul Bhuyan Development of ARIMA models for forecasting the PM10 and PM2.5 concentrations near urban traffic intersection in winter period 2005-07
21 Namita Raokhande The performance evaluation of models for prediction of PM10 and PM2.5 from vehicular exhausts at traffic intersections in Guwahati 2005-06
22 Tushar Guha Modeling of the aerodynamic properties of trees for boundary layer wind tunnel dispersion studies at low wind velocities, (in association with Karlsruhe University , Germany) 2005-06

(In collaboration with Karlsruhe Univ. Germany under DAAD scheme)


Research and Development Grants:

Project: 5                 Project duration: 3 years            Project Start: 2016-19

Funding agency: Ministry of Earth Science, GoI

Project description: Environmental noise in urban centers and mitigations

The aim of this project is to investigate environmental noise propagation in urban traffic corridors, study impact of environmental factors and investigate mitigations.

Project: 4                 Project duration: 3 years            Project Start: 2015-18

Funding agency: DST, GoI

Project description: Urban black carbon and mitigations

The aim of this project  is to investigate the seasonal levels of black carbon in urban areas, to study the impacts of traffic, contribution to radiative forcing in the N-E region and investigate mitigations.

Project: 3                  Project duration: 3 years           Project Start: 2014-17

Funding agency: Institution of Engineers, India (IEI)

Project description: Episodic air quality in urban traffic corridors

The aim of this research is to identify episodic conditions on urban roads, study traffic flow patterns and characteristics during the identified episodic conditions, and identify the parameters responsible.

Project: 2                Project duration: 3 years             Project Start: 2007-11

Funding agency: Dept. of Science & Technology, India

Project description: Air quality model evaluation for regulatory compliance in India

This research examined the impacts of traffic operations and characteristics on the emissions of CO, NO2 and PM at a signalized intersection and a conventional two-lane roundabout. Further the impacts of traffic pattern and meteorology on the levels and locations of higher concentrations of pollutant CO, NO2 and PM in a response to varying flow conditions and emissions resulted from the traffic operations have been examined.

Project: 1                   Project duration: 1 year           Project Start: 2008-09

Client: Amrit-Bio Pvt. India Ltd. Kolkata

Project: EIA of biomass power plant

The aim of this project was to assess the environmental impacts of 10 MW Biomass based power plant at Baghjap in the Mayong Circle of Morigaon District, Assam.

Professional membership:

  • Fellow, FIE - Institution of Engineers, India.
  • Member, ASCE - American Society of Civil Engineers.
  • Member, ACS - American Chemical Society.
  • Member, IUT - Institute of Urban Transport, India.
  • Member, IWWA - Institute of Water Works Association, India.
  • Member, IMS - Indian Meteorological Society.


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