
Dynamic and research-driven Chemical Engineer with over 14 years of academic and industrial experience in process design, modeling, and simulation, specializing in coal and biomass gasification. A pioneer member of the Process Simulation and Modeling Research Group at MUET Jamshoro, with expertise in Computational Fluid Dynamics (CFD), Aspen Suite, and process optimization.
Extensive research experience in coal gasification kinetics and CFD-based reactor design, including the development of a novel flameless “Multi-Opposite Burner Gasifier” for Thar lignite. Skilled in determining high-pressure gasification kinetic parameters and advanced simulation of combustion, solar radiation, turbulent, multiphase, and transient flows using ANSYS FLUENT, POLYFLOW, and COMSOL.
Prior to academia, served Sui Northern Gas Pipelines Limited (SNGPL) for 4 years, focusing on the design, calibration, and maintenance of natural gas metering systems, including orifice metering, flow instrumentation, and gas quality assurance using chromatographs and analyzers.
Proficient in Aspen HYSYS, Aspen Plus, Aspen Adsorption, Aspen EDR, and MATLAB, and experienced in laboratory techniques such as TGA, PTGA, AAS, and HPLC. Dedicated to teaching and training, having conducted multiple professional courses in process simulation and CFD. Passionate about solving challenging design and optimization problems in modern energy and process industries.
Scientist with strong expertise in research methodology, data analysis, and scientific writing. Proven ability to collaborate effectively within multidisciplinary teams and adapt to evolving research environments. Skilled in experimental design, statistical software, and laboratory techniques. Recognized for delivering impactful results and maintaining high standards in academic settings.
1. Lakhmir, M.A., Unar, I.N., Jatoi, A.R., Ahmed, J. and Akhter, F., 2025. Investigating combustion kinetics and combustion behavior of low-grade Pakistani coal: isothermal and non-isothermal analyses using thermogravimetric analysis (TGA). Chemical Papers, 79(3), pp.1493-1505 (IF=2.1).
2. Iqbal, A., Qureshi, K., Unar, I.N. and Bhatti, Z.A., 2024. Recent trends and advancement in the removal of persistent organic pollutants from wastewater by hybrid electrocoagulation chemical degradation processes. Electrochim. Acta, 42, pp.395-418.
3. Qadeer, A., Qureshi, K., Aziz, S. and Nazir, I., 2024. Efficient removal of As (III) and As (V) from contaminated water using novel synthesized Porous Geopolymer. Journal of Ecological Engineering, 25(10), pp.209-223 (IF=1.23).
4. Unar, I.N., Maitlo, I., Ali, S., Khan, S.Y., Riaz, M.K., Ali, S. and Jatoi, A., 2024. Evaluation of Greenhouse Gas Emissions Released from the Petroleum Refinery Industry using Mathematical Modelling with Aspen HYSYS. Journal of Sustainable Environment, 3(1), pp.16-30.
5. Unar, I., Abbas, W., Abro, M. and Qudoos, A., 2024. Dynamic Study of Multilayered Adsorption Column for Fluoride Removal Using Aspen Adsim. Quaid-e-Awam University Research Journal of Engineering Science and Technology, 22(01), pp.19-25.
6. Ali, I., Hussain, T., Unar, I.N., Kumar, L. and Ahad, I.U., 2024. Turbulence Model Study for aerodynamic analysis of the leading edge tubercle wing for Low Reynolds Number flows. Heliyon (IF=4.0).
7. Iqbal, A., Qureshi, K., Unar, I.N. And Bhatti, Z.A., 2024. Enhancement in removal of Chromium and Lead from tanning process effluent by novel rotating disk mesh electrode as anode for electrocoagulation: isotherm and kinetic studies. Journal of Engineering Science and Technology, 19(2), pp.405-423 (IF=0.21).
8. Lakhmir, M.A., Soomro, S.A., Unar, I.N. and Akhter, F., 2024. Remediation of High Sulfur Coal Using Modified Alkali-Acid Hybrid Treatment for Reduced SOx, Low Mineral Content, and Enhanced Combustibility: Comparative Study. Philippine Journal of Science, 153(3) (IF=0.202).
9. Lakhmir, M.A., Soomro, S.A. and Unar, I.N., 2024. Efficient Demineralization and Desulfurization of Lignite Coal using Alkali and Alkali-Acid Follow up Treatments for Reduced Flue Gas Emissions and Enhanced Calorific Value: A Comparative Study.
10. Jarwar, A.I., Qureshi, K., Unar, I.N. and Bhatti, Z.A., 2024. Green and Efficient Removal of Toxic Lead and Chromiumfrom Synthetic Leather Tannery Wastewater using Electrocoagulation. Jurnal Kejuruteraan, 36(1), pp.249-257. (IF =0.6)
11. Rehman, A., Unar, I.N., Abro, M., Qureshi, K., Almani, S. and Jatoi, A.S., 2023. Numerical Simulations of Gasification of Low-Grade Coal and Lignocellulosic Biomasses in Two-Stage Multi-Opposite Burner Gasifier. Processes 2023, 11, 3451 (IF=3.4).
12. Almani, S., Memon, S.A. and Unar, I.N., 2023. Numerical Investigation of the Operating Parameters for Flat Plate Solar Collector: A Simulation-Based Study. Technology (WD-EST’23), 3, p.05.
13. Iqbal, A., Qureshi, K., Unar, I.N. and Bhatti, Z.A., 2023. Efficient Removal of Chromium and Lead from Tanneries Effluent of Korangi Industrial Area Karachi Using Rotating Disk Mesh as Anode Electrode Electrocoagulation. Pakistan Journal of Analytical & Environmental Chemistry, 24(2), pp.231-239.
14. Asim, M., Almani, S., Unar, I.N., Abro, M., Siddiqui, S., Qureshi, K., Solangi, Z.A. and Soomro, S.A., 2023. Isolated bubble ascent in a non-Newtonian media inside an infinite bubble column: a CFD study. Brazilian Journal of Chemical Engineering, pp.1-12 (IF=1.22).
15. Suleman Memon, M. and Unar, I.N., 2023. Arsenic Adsorption on Designed Packed Bed Column using Chemically Modified PAN Fiber-A Simulation and Modeling Studies. International Journal of Applied and Natural Sciences, 1(1), pp.51-58.
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17. Unar, I.N., Maitlo, G., Abro, M., Ali, I., Laghari, A.Q., Solangi, Z.A., Koondhar, N.A., Ansari, N.M. and Kim, J.O., 2023. Modeling and simulation of juice clarifier using computational fluid dynamics for enhanced sugar quality. Brazilian Journal of Chemical Engineering, pp.1-11 (IF=1.772).
18. Unar, I.N., Almani, S., Gianchandani, P.K., Ali, I., ur Rehman, K. and Maitlo, G., Mangi, K.H., 2022. Investigations of Kinetic Characteristics for Co-combustion of Coal with Waste Tyres through Thermogravimetric Analysis (TGA). Journal of Applied and Emerging Sciences, 12(2), pp.131-137.
19. Almani, S., Qureshi, K., Abro, K.A., Abro, M. and Unar, I.N., 2022. Parametric study of adsorption column for arsenic removal on the basis of numerical simulations. Waves in Random and Complex Media, pp.1-17 (IF=4.853).
20. Maitlo, G., Ali, I., Maitlo, H.A., Ali, S., Unar, I.N., Ahmad, M.B., Bhutto, D.K., Karmani, R.K., Sajjad, R.U., Ali, S. and Afridi, M.N., 2022. Plastic Waste Recycling, Applications, and Future Prospects for a Sustainable Environment. Sustainability, 14(18), p.11637 (IF=3.889).
21. Maitlo, G., Ali, I., Mangi, K.H., Ali, S., Maitlo, H.A., Unar, I.N. and Pirzada, A.M., 2022. Thermochemical Conversion of Biomass for Syngas Production: Current Status and Future Trends. Sustainability, 14(5), p.2596 (IF=3.251).
22. Mangi, K.H., Unar, I.N., Almani, S., Gianchandani, P.K., Ali, I., ur Rehman, K. and Maitlo, G., 2022. Investigations of Kinetic Characteristics for Co-combustion of Coal with Waste Tyres through Thermogravimetric Analysis (TGA). Journal of Applied and Emerging Sciences, 12(2), pp.131-137.
23. Unar, I.N., Maitlo, G., Abbasi, S.A., Abro, M., Qureshi, R.F., Memon, S.A., Hussain, T. and Mangi, K.H., 2022. Modeling and simulation of solar flat plate collector for energy recovery at varying regional coordinates. Environmental Science and Pollution Research, 29, pp: 4748–4761 (2022) (IF=4.223).
24. Unar, I.N., Pathan, A.G., Mahar, R.B., Maitlo, G*. and Uqaili, M.A., 2020. Kinetic modeling of gasification reactions of CO2 and H2O for Thar lignite char at elevated pressures. Chemical Papers, pp.1-22 (IF=1.680).
25. Ahmed, S.*, Unar, I.N., Khan, H.A., Maitlo, G., Mahar, R.B., Jatoi, A.S., Memon, A.Q. and Shah, A.K., 2020. Experimental study and dynamic simulation of melanoidin adsorption from distillery effluent. Environmental Science and Pollution Research, pp.1-18 (IF=2.9).
26. RAJPER, S.A., UNAR, I.N*., CHANNA, A. and BHATTI, Z.A., 2020. Investigation of Performance for Entrained Flow Gasifier Through Simulations. Mehran University Research Journal of Engineering and Technology, 39(1), pp.97-110.
27. Unar, I.N., Maitlo, G*., Ahmed, S., Ali, S.S., Memon, A.Q., Kandhro, G.A. and Jatoi, A.S., 2020. Performance evaluation of solar flat plate collector using different working fluids through computational fluid dynamics. SN Applied Sciences, 2(2), p.209.
28. Jatoi, A.S*., Baloch, A.G., Jadhav, A., Nizamuddin, S., Aziz, S., Soomro, S.A., Nazir, I., Abro, M., Baloch, H.A., Ahmed, J. and Mubarak, N.M., 2020. Improving fermentation industry sludge treatment as well as energy production with constructed dual chamber microbial fuel cell. SN Applied Sciences, 2(1), p.9.
29. Unar, I.N., Maitlo, G*., Soomro, S.A., Aziz, S., Shah, S.A.K., Mahar, R.B., Bhatti, Z.A. and Korai, M.S., 2020. Impacts of slurry and dry forms of low-rank coal (lignite) on quality of syngas produced. Clean Technologies and Environmental Policy, pp.1-13. (I.F: 3.636)
30. Abdul Karim Shah*, Hassnain AAbbas Khan, Ghulamullah Maitlo, Rashid Mustafa Korai, Imran Nazir Unar, Aqeel Ahmed Shah, Syed Farman Ali Shah, Usama Ismail. (2019). Citronellal Cyclisation to Isopulegol over Micro-Mesoporous ZSM-5 Zeolite: Effects of Desilication Temperature on textural and catalytic properties, Reaction Kinetics, Mechanisms and Catalysis. DOI: https://doi.org/10.1007/s11144-019-01617-6. First Online 26 June, 2019 (I.F: 1.428).
31. Maitlo, G.*, Unar, I.N., Mahar, R.B. and Brohi, K.M., 2019. Numerical simulation of lignocellulosic biomass gasification in concentric tube entrained flow gasifier through computational fluid dynamics. Energy Exploration & Exploitation, PP:01-25. DOI: 10.1177/0144598719839760. (I.F: 1.946)
32. Ghulamullah Maitlo*, Rasool Bux Mahar, Zulfiqar Ali Bhatti and Imran Nazir Unar, 2019. A Comprehensive Literature Review of Thermochemical Conversion of Biomass for Syngas Production and Associated Challenges, Mehran University Research Journal of Engineering & Technology, Volume 38, No.2, pp: 495-512.
33. Imran Nazir Unar, Suhail Ahmed Soomro, Ghulamullah Maitlo*, Shaheen Aziz, Rasool Bux Mahar, Zulfiqar Ali Bhatti, Numerical Study of Coal Composition Effects on the Performance of Gasification Through Computational Fluid Dynamic, International Journal of Chemical Reactor Engineering. 2019; 20180204 (I.F: 1.059).
34. Mahar, H*., Jatoi A. S., Unar, I. N., Gopang, I. A., Makhdoom, N. and Siddique, M. 2018. Numerical Simulation of Ethanol Production for Different Carbon Sources Using Thermotolerant Kluyveromyces Marxianus, J. Appl. Emerg. Sci., Vol. 8, No. 1, pp.1-9.
35. Maitlo, G.*, Unar, I.N. and Shah, S.A.K., 2018. Thermogravimetric analysis of Pakistani biomasses using nitrogen and oxygen as a carrier gas. Chemical Papers, pp.1-9 (I.F: 1.246).
36. Abdul Sattar Jatoi*, Imran Nazir Unar, Manzoor-ul-haq Rajput, Shaheen Aziz, Suhail Ahmed Soomro, Masroor Abro, Jawad Ahmed Khoso, Mohammad Siddique. 2018, Microbial Fuel Cell for bio-electricity generation via Bio-Electrochemical conversion of Fermentation Industry Sludge, A J Life Sci. 2018, 1 (2): 42-53.
37. Zulfiqar Ali Bhatti*, Khadija Qureshi1, Muhammad Yar Khuhawar, Abdul Waheed Bhutto, Zulfiqar Ali Solangi, Imran Nazir Unar, 2018. Low Cost Indigenous Technologies For Removal Of Arsenic From Drinking Water: Case Study Of Pakistan, International Journal of Recent Research and Applied Studies (IJRRAS), 34 (3).pp. 66-77.
38. Maitlo, G.*, Mahar R.B., Bhatti, Z. A., Unar, I. N. 2018. A Comprehensive literature review of thermochemical conversion of biomass for syngas production and associated its challenges. Mehran University Research Journal of Engineering & Technology, Volume 38, No2, pp: 495-512. April 2019. DOI: 10.22581/muet1982.1902.24.
39. Ghulamullah Mailto*, Rasool Bux Mahar, Imran Nazir Unar and Khan Muhammad Brohi, 2018. Kinetic Study of Cotton Stalk and Rice Husk Samples under an Inert and Oxy Combustion Atmospheres. Mehran University Research Journal of Engineering & Technology, Volume 37, No.2, April 2018 [p-ISSN: 0254-7821, e-ISSN: 2413-7219].
40. Jatoi, A.S.*, Aziz, S., Unar, I.N., Soomro, S.A. and Siddique, M., 2017. Optimization of the Temperature Effect on Ethanol Production through use of Simulation. Journal of Applied and Emerging Sciences, 7(2), pp.pp139-144.
41. Zulfiqar Ali Bhatti*, Khadija Qureshi, Inamullah Bhatti, Imran Nazir Unar and Mohammad Yar Khuhawar., 2017. Determination of Arsenic and Health Risk Assessment in the Ground Water of Sindh, Pakistan. Mehran University Research Journal of Engineering & Technology, Volume 36, No. 4, October, 2017 [ISSN 0254-7821].
42. Wang, L., Jia, Y., Kumar, S.*, Li, R., Mahar, R.B., Ali, M., Unar, I.N., Sultan, U. and Memon, K., 2017. Numerical analysis on the influential factors of coal gasification performance in two-stage entrained flow gasifier. Applied Thermal Engineering, 112, pp.1601-1611 (I.F: 4.026).
43. Naich, M.R.*, Hassan, M., Aftab, A., Unar, I.N., Mahar, H., Hussain, S. and Akhtar, K.S., 2016. Adsorption of transition-metal atoms on two-dimensional hexagonal boron nitride monolayer: A First-principles study. Journal of the Pakistan Institute of Chemical Engineers, 44(1), pp.84-91.
44. Aftab, A., Unar, I.N.*, Mahar, H. and Hussain, S.M.A.S., (2016). Modeling of Refrigeration Based Hydrocarbon Dew Point Control Plant. Science International, 28(4).
45. Paraksh, A.*, Aziz, S., Nazir, I. and Soomro, S.A., 2015. Utilizing Dairy Wastewater for Electricity Generation Using Environment-Friendly Double Chambered Microbial Fuel Cell. NUST Journal of Engineering Sciences, 8(1), pp.44-50.
46. Anand Parkash*, Shaheen Aziz, Imran Nazir, Suhail A. Soomro. (2015). Utilization of Sewage For Voltage Generation In Dual Chamber Microbial Fuel Cell. Sci. Int. (Lahore), Volume 27, No. 6, pp. 5065-5068.
47. Imran Nazir Unar*, Aziza Aftab and Masroor Abro. (2015). Estimation of Power Production Potential from Natural Gas Pressure Reduction Stations in Pakistan Using ASPEN HYSYS. Mehran University Research Journal of Engineering & Technology, Volume 34, No. 3, July, 2015 [ISSN 0254-7821].
48. Unar, I. N.*, Wang, L., Pathan, A. G., Mahar, R. B., Li, R., & Uqaili, M. A. (2014). Numerical simulations for the coal/oxidant distribution effects between two-stages for multi opposite burners (MOB) gasifier. Energy Conversion and Management, 86, 670-682 (I.F: 2.77).
49. Abdul Qadeer*, Adnan Aftab, Imran Nazir, "Optimization of Energy Consumption during Natural Gas Dehydration", Journal of Applied and Emerging Sciences, Vol. 3, Issue 1, July 2012, pp: 7-11.
50. S. Aziz*, S. A. Soomro , A. H. Tunio, I.N. Unar, K. M. Qureshi1, R. Begum, “Environmental & Health Hazards Of Fly Ash & SOx From FBC Power Plant At Khanote”, Pak. J. Anal. Environ. Chem., Vol. 11, No. 2 (2010),
51. I.N. Unar*, S.A. Soomro, S. Aziz, “Effect of Various Additives on The Physical Properties Of Poly Vinylchloride (PVC) Resin” Pak. J. Anal. Environ. Chem. Vol. 11, No. 2 (2010).