2025

1. Ruma Rano, Rosidul Islam, Firoza Sultana: "Study Of Low-Rank High Sulphur Coal from North-East India and Its Environmental Impacts on Utilisation" International Conference on Advances in Energy and Environment for Sustainable Development (AEESD – 2025) (2025) Campus Institute of Technical Education & Research (ITER), Siksha ‘O’ Anusandhan , Jagamara, Bhubaneswar, Odisha, India,

2024

1. Gadore V, Mishra SR, Ahmaruzzaman M.: "Advances in Zinc Sulphide-Based Photocatalysts for Dye Removal: A Review." International Conference on Water Resources, Ocean and Environmental Engineering (2024) Singapore Springer Nature Singapore.
2. Ruma Rano and Firoza Sultana: "Adsorption Studies of Phenol on Coal Combustion Residues" International Conference on Materials, Energy, Environment and Manufacturing Sciences(MEEMS-2024) (2024) Shri Madhwa Vadiraja Institute of Technology and Management, Udupi Karnataka, India
3. Jayanta Kumar Kar, Ruma Rano, Saurabh Chaudhury: "A DFT-based studies on Electronic and Optical Properties of Tetragonal Hafnium Dioxide (t-HfO2) and the Effect of Silicon (Si) Doping" International Conference on Nanotechnology, Renewable Materials Engineering & Environmental Engineering (ICNRMEEE-2024) ,PURI (2024) PURI, INDIA 14-18
4. Ruma Rano and Naseef Sha P: "Alumino-Silicous and Magnetic Materials: The Novel Value Added Components Derived from Indian Flyash" International Conference on Nanotechnology, Renewable Materials Engineering & Environmental Engineering (ICNRMEEE-2024) ,PURI (2024) PURI, INDIA 8-14
5. Mishra SR, Gadore V, Ahmaruzzaman M.: "Advances in Sustainable Water Treatment: Photocatalytic Removal of Pharmaceuticals from Wastewater with Biochar-Based Nanocomposites." International Conference on Water Resources, Ocean and Environmental Engineering (2024) Singapore Springer Nature Singapore.

2023

1. Jayanta Kumar Kar, Ruma Rano and Saurabh Chaudhury: "Optoelectronic Properties of Ag-Au Co- Doped LiNbO3 Studied by First-Principles Generalized Gradient Approximation + U Approach" IEEE Int. Conference, IEMEN Tech 2023, Kolkata. (2023) Kolkata

2022

1. Jayanta Kumar Kar, Ruma Rano, and Saurabh Chaudhury: "Impact of Ag and Au concentration on the electronic and optical properties of LiNbO 3 : A DFT based calculation" International Symposium on Semiconductor Materials and Devices-2022 (2022) Bhubaneswar India

2020

1. J Deka, H Das, P Barman, A Devi, KG Bhattacharyya: "Adsorption of Industrial Dye from Its Aqueous Solution by Acid Treated Bioadsorbent White Frangipani" 2nd International Conference on Future aspects of Sustainable Technologies (2020) CIT Kokrajhar Springer Nature Scopus

2018

1. Sauvik Raha, Dipyaman Mohanta, Md. Ahmaruzzaman: "Bioinspired synthesis of a novel ternary ZnO/CuO/rGO nanocomposite for photocatalytic degradation of emerging organic pollutants" International Conference on systems and Processes in Physics, Chemistry and Biology (2018) Assam University Silchar, Assam.
2. Th. Babita Devi , Ajaikumar B. Kunnumakkara, M. Ahmaruzzaman,: "A green approach for the fabrication of hybrid nanoparticles and their antimicrobial properties" 3rd International Conference on Nutraceuticals and Chronic Diseases Swami Rama Himalayan University, Rishikesh(Dehradun), Uttarakhand, India
3. Firoza Sultana, Ruma Rano: "Water Holding Capacities of High carbon ash from Paper Mills" International Conference on Waste Management (2018) IIT Guwahati
4. Firoza Sultana, Ruma Rano: "Coal combustion residues from pulp and paper mill and its potential utilization" International Conference on Waste Management, Recycle-2016 IIT Guwahati

2017

1. Papri Sutar, Tapas Kumar Maji: "Binder-modulated Morphology and Photo-responsive White-light-emission in MOC-derived Hydrogel" 24th Congress & General Assembly of the International Union of Crystallography 2017 (IUCR-2017) (2017) Hyderabad, India Acta Cryst. A (C529),
2. Pooja Choudhury, Dipyaman Mohanta, Md. Ahmaruzzaman ded activated carbon composite: An efficient adsorbent for the removal of Iron from aqueous solution: "Tin oxide loaded activated carbon composite: An efficient adsorbent for the removal of Iron from aqueous solution" Second International Conference on Material Science (2017)
3. R. Rano, N. A. Mazumder, F. Sultana: "Synthesis and Characterization of Fly Ash-Ag2O Nanoaggregates Photocatalyst for Degradation of Malachite Green Dye" 4th International Conference on Nanoscience and Nanotechnology (ICNSNT) (2017) Colombo, Sri Lanka
4. N.A. Mazumder, R. Rano: "Synthesis and characterization of fly ash modified copper oxide (FA/CuO) photocatalyst for degradation of methyl orange dye under direct sunlight" 2nd International Conference on Material Science (ICMS-2017) (2017) Tripura University, Tripura, India
5. N.A. Mazumder, R. Rano: "Importance of FE-SEM, FT-IR, XRD and BET surface area analysis to characterize various heterogeneous catalysts derived from coal fly ash" International Conference on Sophisticated Instruments in Modern Research (ICSIMR 2017) (2017) IIT Guwahati
6. Firoza Sultana, Ruma Rano: "Comparative study of coal combustion residues from pulp and paper mills of assam for potential utilization" National Symposium on Advances in Chemical Sciences 2017 Assam University Silchar
7. N.A. Mazumder, R. Rano: "Surface modification of fly ash and its application as a photocatalyst" (NCCP-2017) (2017) Assam University, Silchar
8. N.A. Mazumder, R. Rano: "Fischer estrerification reaction over green and efficen solid acid catalyst synthesized from fly ash" 20th CRSI National Symposium in Chemistry (2017) Gauhati University, Guwahati, India
9. N.A. Mazumder, R. Rano: "Facile Synthesis of fly ash supported ZnO-TiO2 for photocatalytic degradation of eosin B dye" National Symposium on Advances in Chemical Sciences (NSACS-2017) (2017) Assam University Silchar, India
10. Shamima Begum, M. Ahmaruzzaman: "Green Synthesis of SnO2 Nanoparticles loaded on Activated Carbon and its Application as Photocalayst in the Degradation of Alizarin Red S Dye, Poster presentation" Second International Conference on Material Science (ICMS-2017) (2017) Tripura University, Tripura.
11. Shamima Begum, M. Ahmaruzzaman: "Green synthesis of SnO2 nanoparticles loaded activated carbon and its application as photocatalyst in the degradation of alizarin red S dyes" Second International Conference on Materials Science(ICMS-2017)
12. Pooja Choudhury, M. Ahmaruzzaman: "Tin-oxide nanoaprticles loaded activated carbon composites: An effective adsorbent for removal of iron from aqueous solution" Second International Conference on Materials Science(ICMS-2017)
13. Th. Babita Devi, M. Ahmaruzzaman: "Facile preparation of copper nanoparticles using Cociniagrandis fruit extract and its application towards the reduction of toxic nitro compound" Second International Conference on Materials Science (ICMS-2017)
14. Dipyaman Mohanta, Puja Choudhury, Ruhul Amin Reza, M. Ahmaruzzman: "Chemically modified Jute stick-SnO2 nanocomposites as efficient adsorbent for arsenic and iron removal from water" International Conference on nano for energy and water
15. Shamima Begum, M. Ahmaruzzaman: "Hydrothermal synthesis of ZnO nanoparticles and their application as photocatalyst in the degradation of Triphenylmethane dye" Hydrothermal synthesis of ZnO nanoparticles and their application as photocatalyst in the degradation of Triphenylmethane dye
16. Shamima Begum, M. Ahmaruzzaman: "Green synthesis of SnO2/Activated carbon nanocomposite and its application as photocatalyst in the degradation of naproxen, oral presentation" 4th International Conference on Nanoscience and Nanotechnology (ICONN-2017) (2017) SRM University, Chennai
17. Shamima Begum, M. Ahmaruzzaman: "Green Synthesis of SnO2 Nanoparticles loaded on Activated Carbon and its Application as Photocalayst in the Degradation of Alizarin Red S Dye, Poster presentation" Second International Conference on Material Science (ICMS-2017) (2017) Tripura University, Tripura.

2016

1. N.A. Mazumder, R. Rano: "A highly efficient solid acid catalyst derived from coal fly ash" National Conference on Recent Development & Applications in Chemical Sciences (RDACS-2016) (2016) NIT Agartala
2. N.A. Mazumder, R. Rano: "Synthesis of a green and highly efficient solid base catalyst from waste coal fly ash for Knoevenagel condensation reaction" National Conference on Frontiers in Chemical Sciences (FICS 2016) (2016) IIT Guwahati
3. Dipyaman Mohanta, Md. Ahmaruzzaman,: "Synthesis and characterization of SnO2 quantum dots and their applications in photocatalytic degradation of dyes" Materials Research society of India symposium on Advanced materials for sustainable applications (2016) CSIR-NEIST Jorhat, Assam
4. Th. Babita Devi, M. Ahmaruzzaman: "Bio-inspired facile and green synthesis of Au@Ag@AgCl nanoparticles using BenincasaHispida peel extract and their photocatalytic activity for the removal of toxic dye under solar irradiation" International Conference on Waste Management (Recycle 2016)
5. Pamreishang Kasar, M. Ahmaruzzaman: "Plastics wastes and recycling prospects in North East India" International Conference on Waste Management (Recycle 2016)
6. N.A. Mazumder, R. Rano: "A highly efficient solid base catalyst derived from waste fly ash" International Conference on Waste Management (RECYCLE 2016) (2016) IIT Guwahati

2015

1. N.A. Mazumder, R. Rano: "Investigation on Fly Ash from Super Thermal Power Plant in India Using XRF, XRD, SEM-EDS and FT-IR Spectroscopy" National Conference on Current Perspectives on Research on Chemical Sciences (CPRCS-2015) (2015) Assam University, Silchar
2. Tanur Sinha and Md. Ahmaruzzaman: "A greener approach for the fabrication of bimetallic gold-silver nanostructured materials and their application for the remediation of hazardous dyes from aqueous phase" Conference on Advanced Nanomaterials and Nanotechnology (ICANN 2015) Indian Institute of Technology Guwahati, Guwahati, Assam, India.
3. Archita Bhattacharjee, Md. Ahmaruzzaman: "Aminoacid assisted green synthesis of CuO nanorods and its application as catalyst in the removal of a toxic aromatic nitro compound" International Conference on Frontier Science and Technology (2015) National Institute of Science and Technology, Berhampur, Odisha.
4. Th. Babita Devi, Md. Ahmaruzzaman: "Microwave assisted rapid and green synthesis of silver/silver chloride nanoparticles using Momordica charnatia leaf extract and their catalytic activity" International Conference on Frontier Science and Technology (2015) National Institute of Science and Technology, Berhampur, Odisha.
5. Shamima Begum, Md. Ahmaruzzaman: "Surfactant Assisted Microwave Synthesis of SnO2 nanoaprticles and its phototcatalytic activity" International Conference on Frontier Science and Technology (2015) National Institute of Science and Technology, Berhampur761008, India.

2014

1. Th. Babita Devi and M.Ahmaruzzaman: "A rapid facile and green synthesis of Silver nanoparticles and its exploitation as a catalyst for the removal of hazardous dye" First International Conference on Emerging Materials: Characterization & Application (EMCA-2014) (2014) Kolkata, India
2. Ruma Rano, Firoza Sultana, Bishal Bhuyan, Nurul Alam Mazumder: "Characterisation of High Carbon Ash from Pulp and Paper mill for Potential Utilasation" International Conference on Waste Management and Environmental Engineering ICWMEE 2014 (2014) Bangkok, Thailand
3. Archita Bhattacharjee, Md. Ahmaruzzama: "Green synthesis of SnO2 nanoparticles and its application as a photocatalyst in the degradation of organic dye" First International Conference on Emerging Materials: Characterization & Application (EMCA-2014) Kolkata, India
4. Shamima Begum, Md. Ahmaruzzaman: "Lysine mediated facile synthesis of SnO2 nanopartilces and its photocatalytic activity," First International Conference on Emerging Materials: Characterization & Application (EMCA-2014) (2014) Kolkata, India
5. Ahmaruzzaman, M. and Ruhul Amin Reza: "Evaluation of Ibrufen Adsorption/Desorption Efficiency onto Non-Conventional Activated Schumannianthus Dichotomus Carbon: Kinetic and Thermodynamic Assay" The 7th International Conference on Environmental Science and Technology (2014) Huston, Texas, USA
6. Tanur Sinha and M.Ahmaruzzaman: "Sunlight Induced Rapid synthesis of Anisotropic Gold nanostrucutres using the peels of Citrus Grandis and its Photocatalytic activity" First International Conference on Emerging Materials: Characterization & Application (EMCA-2014) (2014) Kolkata, India.
7. Papuli Borah, Manash Pratim Saikia, and Md. Ahmaruzzaman: "Trıethanolamıne based hyperbranched epoxy resın: synthesıs, property evaluatıon and utılızatıon ın thın fılm applıcatıon" International Conference on Advancements in Polymeric Materials APM 2014, Trends & Technology exploring the hidden potential of polymeric materials

2012

1. Ruhul Amin Reza, Asim K. Sil, and M. Ahmaruzzaman: "Assessment of Iron concentration in and around Silchar town of underground water and removal of iron using tea waste- as an adsorbent" 18th International Conference (Post ISCBC-2012) on Perspective and Challenges in Chemical and Biological Sciences, Innovation Cross Roads (2012) IASST, Guwahati
2. Ahmed Md. Juned Khannam and Md. Ahmaruzzaman: "Adsorptive Desulfurisation of Feed Diesel on Low Cost Activated Carbon prepared by Chemical Impregnation of Agricultural Waste" 2nd International Science Congress (ISC-2012) (2012) Bon Maharaj Engineering College, Vrindavan, UP, India
3. Ruhul Amin Reza, Asim K. Sil, and M. Ahmaruzzaman: "Adsorptive removal of Fe (III) from aqueous phase using activated spent tea leaf" 2nd International Science Congress (ISC-2012) (2012) Bon Moharaj Engineering College, Vrindavan, UP

2011

1. Ahamruzzaman, M and S. Laxmi Gayatri: "The use of activated carbon derived from potato peel as an adsorbent for the removal of 4-nitrophenol" International Conference on Emerging areas of Chemistry, ICEAC-2011 (2011) Department of Chemistry, Tripura University, Agartala, Tripura
2. Ahamruzzaman, M and S. Laxmi Gayatri: "Adsorption isotherms for phenol adsorption on activate tea waste" International Conference on Innovations in Chemistry for sustainable Development, (ICSD-2011) (2011) Punjab University, Chandigarh, India.
3. Ahamruzzaman, M and S.Laxmi Gayatri: "Development of adsorbent from solid waste of potato peels for decontamination of wastewater containing 4-nitrophenol" The 14th International conference of International Academy of Physical Sciences on Physical Sciences interface with Humanity (CONIAPS-XIV) (2011) SVNIT Surat, India

2010

1. N. S. Moyon, S. Mitra: "A Combined Experimental and Theoretical Study on the Photochemistry of Alloxazines" (2010) 3rd Asia Pacific Symposium on Radiation Chemistry (APSRC-2010) & DAE-BRNS 10th Biennial Trombay Symposium on Radiation& Photochemistry (TSRP-2010) at Lonavala, Maharastra

2008

1. Ahamruzzaman, M and S. Laxmi: "Adsorptive removal of p-nitrophenol using charred jute stick" The 4th International Conference on Environmental Science and Technology (2008) Huston, Texas, USA
2. Ahamruzzaman, M and S. Laxmi: "Adsorptive removal of p-nitrophenol using charred jute stick" The 4th International Conference on Environmental Science and Technology (2008) Huston, Texas, USA

2007

1. Sharma, D.K. and Ahamruzzaman: ". Added Value products from vacuum residue by co-cracking with waste plastics, coal and biomass" 7th International conference and Exhibition, PETROTECH -2007 (2007)
2. Ruma Rano & A. Sarkar: "Processing and Characterisation of Ferrospheres for Potential Application in Admixture for Electromagnetic Interference Shielding" 10th NCB International Seminar on Cement and Building Materials (2007) New Delhi, India 480-498

2006

1. Ruma Rano and A.Sarkar: "Morphological Characteristics of Ferrospheres extracted from Some Indian Flyash" National Conference on Frontier Areas in Geological and Technological Aspects of Fossil Fuel and Mineral Resources (2006) I.S.M, Dhanbad 329-333

2005

1. A. Sarkar and Ruma Rano: "Database of Morphological Features of Fly Ash – A tool for Effective Utilisation" International Congress on Fly Ash Utilisation (2005) FAUP,TIFAC,DST,New Delhi 7.1-7.11
2. A. Sarkar and Ruma Rano: "Processing and Physico-Chemical Characterisation of Cenospheres collected from Ash-pond of a Super Thermal Power Plant" International Seminar on Mineral Processing Technology MPT (2005)

2004

1. A. Sarkar and Ruma Rano: "High Carbon Fly ash from Stoker Fired Combustor - Potential Acoustic Material" National Conference on Emerging Areas in Applied Physics (2004) I.S.M, Dhanbad

2003

1. A. Sarkar and Ruma Rano: "Assessment of Fly ash for use in High Performance Concrete" Eighth NCB International Seminar on Cement and Building Materials (2003) New Delhi, India 54-63

2002

1. Ahmaruzzaman, M. and Sharma, D.K.: "Studies on co-processing of petroleum vacuum residue with plastics, coal and petrocrop" 4th International conference and Exhibition, PETROTECH -2002 (2002)
2. Ahmaruzzaman, M.: "Performance of upflow anaerobic reactor treating municipal sewage" International Conference on advances in Civil Engineering 2001 (2002)

2001

1. Ahamruzzaman, M: "Utilization of fly ash - a need for the present world" International Conference on Global Changes “Issues and Challenges (2001)
2. Ruma Rano and A. Sarkar: "Estimation of Morphological Changes of Fly ash Particles on Burning at an Elevated Temperature Using Scanning Electron Microscopy" National Seminar on Instrumental Techniques in Chemical Analysis (2001) I.S.M, Dhanbad

2000

1. A . Sarkar, R. Rano, N.C. Karmakar, S. Bhattacharya: "Effect of Particle Characteristics on the Settling Time of Fly ash Slurry" First Asian Particle Technology Symposium (ATP 2000) (2000) Bangkok, Thailand
2. A. Sarkar, Ruma Rano, N.C. Karmakar, S.Bhattacharya and I.N. Sinha: "Physico-Chemical Characterization of Different Size Fractions of Fly ash – A Case Study" Geo- environmental Reclamation (International Symposium, Nagpur) (2000) (International Symposium, Nagpur) 321-325

1999

1. Ahmaruzzaman, M. and Jash,T: "Studies on biomethanation of Calcutta municipal sewage in upflow anaerobic reactor" International conference (ECNM-99) on Environmental Challenges for the new Millennium (1999)