Center for Environmental Studies and Research (CESAR)
  • CESAR Staff
  • Research Interests
  • Projects
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Established in 2000, the Center for Environmental Studies and Research (CESAR) is the Sultan Qaboos University’s focal point for multidisciplinary research, training, and consultancy programs related to the environment. As evident from its Mission , Vision and Objectives , CESAR is dedicated to conducting high-level research to facilitate decision making regarding environmental issues in public and private spheres. CESAR is partnering with faculty and students in many colleges at SQU, public organizations, international agencies, and industrial stakeholders to conduct a variety of research, training, and community engagement activities.


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Quick Facts





CESAR Achievements Map



  • Collect and analyze the data and disseminate the information among all stake holders involved in environmental research/projects done at the national, regional and international level.
  • Facilitate interactions between government ministries, international agencies and the private sector to carry out environmental research in the Sultanate.
  • Promote interdisciplinary environmental research at the University using available expertise and other resources.
  • Seek and administer internal/external funding for environmental research and programs organized by/at the University.
  • Organize seminars, symposia and conferences on environmental issues with the assistance of local, regional and international sponsors.
  • Publish articles, directories, and conference proceedings to disseminate research results.
  • Create awareness of environmental issues among school and university students and public using mass media and by organizing special activities.
  • Facilitate consultancy projects by linking up SQU researchers with relevant stake holders.
  • Support of postdoctoral fellows and visiting scholars to conduct environmental research in Oman.
Dr malik Dr. Malik Mohammed Al Wardy, PhD
Associate Professor
Research Interests
  • Soil pollution and contamination
  • Land Degradation
  • Climate change
  • Water resource management
  • Remote sensing and GIS
Contact call  (968) 24143122. email


Dr. Hamed Hamoud Al- Nadabi, PhD

Assistant Research

Research Interests
  • Issues related to Plant Diseases, 
  • Environmental Biotechnology 

  • Biodiversity Conservation  
Contact call  (968) 24143126 email


Dr. Salah Ali Jellali, PhD
Associate Professor

Research Interests
  • Decentralized wastewater management
  • Wastewater treatment and valorization
  • Solid wastes management and valorization
  • Biochars valorization in agriculture and environment 
  • Sustainability and circular economy
Contact call  (968) 24143378 email



Dr. Ahlam Hilal Al Hanai, PhD
Associate Researcher

Research Interests
  • Aerosols
  • Air Pollution
  • (In Vitro) PM Toxicity
  • Blue Carbon
Contact call  (968) 24146747 email



Dr. Sulaiman Salim Al Hashmi, PhD
Assistant Research

Research Interests Renewable energy technologies: Solar thermal ,Solar PV, Wind ,Green hydrogen, Geothermal ,Solar thermal storage ,Hybrid renewable systems, Thermodynamic ,Striling engine, Heat exchanger ,Energy Efficient System
Contact call  (968) 24143378 email



Mr. Khalifa Sulaiman Al-Zeidi, MSc
Associate Researcher

Research Interests
  • Climatology
  • Climate changes
  • Natural Disaster Management
  • Sustainability Issues
  • Local Community Issues
  • Sustainable Smart Cities
  • Physical Geography
Contact call  (968) 24143126 email



Mr. Ahmed Khamis Al-Sidairi, BSc  
Assistant Researcher

Research Interests
  • Issues related to Ecosystems 
  • Biodiversity Conservation
Contact call  (968) 24143378  email



Mr. Ahmed Abdullah Al-Raeesi, B.Sc.   
Assistant Researcher

Research Interests
  • Issues related to Water Technology 
  • Soil and Water Management 
  • Climate Change and Environmental Pollution and Awareness
Contact call  (968) 24143378  email






HMs Projects

External Projects

Pyrolysis as a sustainable option for poultry manure management: Investigations on biochars valorization in agriculture and environment Use of iron-based nanocomposites to develop an efficient immobilization technology for contaminated soils

Sustainable management of the produced wastewaters/wastes in the main industrial area of the sultanate of Oman towards zero-liquid/solid discharges Development of Efficient Treatments for Safe Reuse and Disposal of industrial wastewater and sludge in agricultural soil

ATLAS Project Research Chair for Industrial estates development in Oman

An offshore Wind Energy Resource Assessment for the Sultanate of Oman

Oman Regional studies and National Transport surveys Readiness Preparatory support for Oman

Coastal Ecosystem Management Assessment of Sustainable Remediation Options for Contaminated Soil Stockpiles Climate changes Modelling International Conference proposal on “Climate Change policy and strategies toward the implementation

Air quality monitoring in the Sultanate of Oman Coastal water quality and pollution monitoring Wastewater treatment and reuse at Al Marsa fisheries plant at al Russayl industrial estate

Review of Literature on Environmental Issues in the Sultanate An Evaluative Study of the Environmental and Social Responsibility Programs of Corporate Sector in Al-Wusta Governorate Wastewater Treatment and Reuse at A’Saffa Poultry Farm at Thamrait

Land Degradation in Jebal Akhdar region to UNEP/GEF

Internal Projects

Evaluating Blue Carbon Sequestration of Intact and Restored Avicennia Marina Along the Coastline of Oman Characterization, Diversity and Biological Control of Fungal Species Associated with dieback disease of Juniperus seravschanica in Western Hajr Mountains in Oman

Nutrients recovery from wastewaters by modified biochars for agronomic valorization: Static and dynamic investigations Efficient and cost-effective treatment of oilfield produced water by integrating advanced oxidation processes and adsorption

Vulnerability and Adaptation in Omani Agriculture : Coping with Climate Change

Socio-economic Significance of Mangroves for the coastal people of Oman: A changing scenario

Socio economic of mangrove in Oman International Desalination conference

Development of low-cost and decentralized grey water treatment systems for proper handling, treatment and reuse in Oman and South Africa”




1. Kypritidou, Z.; El-Bassi, L.; Jellali, S.; Kinigopoulou, V.; Tziritis, E.; Akrout, H.; Jeguirim, M.; Doulgeris, C. Lead removal from aqueous solutions by olive mill wastes derived biochar: Batch experiments and geochemical modelling. J. Environ. Manage. 2022, 318, 115562, doi:10.1016/j.jenvman.2022.115562. 2. Jellali, S.; Zorpas, A.A.; Alhashmi, S.; Jeguirim, M. Recent Advances in Hydrothermal Carbonization of Sewage Sludge. Energies 2022, 15, 6714, doi:10.3390/en15186714. 3. Papamichael, I.; Voukkali, I.; Jeguirim, M.; Argirusis, N.; Jellali, S.; Sourkouni, G.; Argirusis, C.; Zorpas, A.A. End-of-Life Management and Recycling on PV Solar Energy Production. Energies 2022, 15, 6430, 4. Jellali, S.; Azzaz, A.A.; Al-Harrasi, M.; Charabi, Y.; Al-Sabahi, J.N.; Al-Raeesi, A.; Usman, M.; Al Nasiri, N.; Al-Abri, M.; Jeguirim, M. Conversion of Industrial Sludge into Activated Biochar for Effective Cationic Dye Removal: Characterization and Adsorption Properties Assessment. Water (Switzerland) 2022, 14, doi:10.3390/w14142206. 5. Hamdi, W.; Hamdi, N.; Jellali, S.; Seffen, M. Effect of background electrolytes on the adsorption of phosphorus (P) onto southern Tunisia natural clays. Phys. Chem. Earth 2022, 127, 103160, doi:10.1016/j.pce.2022.103160. 6. Issaoui, M.; Jellali, S.; Zorpas, A.A.; Dutournie, P. Membrane technology for sustainable water resources management: Challenges and future projections. Sustain. Chem. Pharm. 2022, 25, 100590, doi:10.1016/j.scp.2021.100590. 7. Mabrouki, J.; Abbassi, M.A.; Khiari, B.; Jellali, S.; Zorpas, A.A.; Jeguirim, M. The dairy biorefinery: Integrating treatment process for Tunisian cheese whey valorization. Chemosphere 2022, 293, 133567, doi:10.1016/j.chemosphere.2022.133567. 8. Jellali, S.; El-Bassi, L.; Charabi, Y.; Uaman, M.; Khiari, B.; Al-Wardy, M.; Jeguirim, M. Recent advancements on biochars enrichment with ammonium and nitrates from wastewaters: A critical review on benefits for environment and agriculture. J. Environ. Manage. 2022, 305, 114368, doi:10.1016/j.jenvman.2021.114368. 9. Kypritidou, Z.; Doulgeris, C.; Tziritis, E.; Kinigopoulou, V.; Jellali, S.; Jeguirim, M. Geochemical Modelling of Inorganic Nutrients Leaching from an Agricultural Soil Amended with Olive-Mill Waste Biochar. Agronomy 2022, 12, 1–15, doi:10.3390/agronomy12020480. 10. Jeguirim, M.; Jellali, S.; Khiari, B. Recent Advances in Sustainable Biomass Valorization. Comptes Rendus Chim. 2022, 25, 1–5, doi:10.5802/crchim.190. 11. Mabrouki, J.; Abbassi, M.A.; Khiari, B.; Jellali, S.; Jeguirim, M. Investigations on potential Tunisian biomasses energetic valorization: thermogravimetric characterization and kinetic degradation analysis. Comptes rendus - Chim. 2022, 25, 81–92, 12. Jmai, S.; Guiza, S.; Jellali, S.; Bagane, M.; Jeguirim, M. Competitive bio-sorption of basic dyes onto petiole palm tree wastes in single and binary systems. Comptes rendus - Chim. 2022, 25, 27–41, 13. Usman, M.; Sanaullah, M.; Ullah, A.; Li, S.; Farooq, M. Nitrogen Pollution Originating from Wastewater and Agriculture: Advances in Treatment and Management. Rev. Environ. Contam. Toxicol. 2022, 260, doi:10.1007/s44169-022-00010-0. 14. Wei, Y.; Chu, R.; Zhang, Q.; Usman, M. Advances for efficient removal of hexavalent chromium : remediation performance and interfacial chemical. RSC Adv. 2022, 12, 26953–26965, doi:10.1039/d2ra04650d. 15. Saleem, A.; Zhang, Y.; Usman, M.; Haris, M.; Li, P. Tailored architectures of mesoporous carbon nanostructures: From synthesis to applications. Nano Today 2022, 46, 101607, doi:10.1016/j.nantod.2022.101607. 16. Alomar, T.S.; Hameed, B.H.; Usman, M.; Almomani, F.A.; Ba-Abbad, M.M.; Khraisheh, M. Recent advances on the treatment of oil fields produced water by adsorption and advanced oxidation processes. J. Water Process Eng. 2022, 49, 103034, doi:10.1016/j.jwpe.2022.103034. 17. Hameed, A.; Hameed, B.H.; Almomani, F.A.; Usman, M.; Ba-Abbad, M.M.; Khraisheh, M. Dynamic simulation of lead(II) metal adsorption from water on activated carbons in a packed-bed column. Biomass Convers. Biorefinery 2022, doi:10.1007/s13399-022-03079-8. 18. Hamid, Y.; Liu, L.; Usman, M.; Naidu, R.; Haris, M.; Lin, Q.; Ulhassan, Z.; Hussain, M.I.; Yang, X. Functionalized biochars: Synthesis, characterization, and applications for removing trace elements from water. J. Hazard. Mater. 2022, 437, 129337, doi:10.1016/j.jhazmat.2022.129337. 19. Zhang, Y.F.; Lu, L.; Huang, F.Y.; Zhang, Y.; Li, X.M.; Yang, L.H.; Usman, M.; Kappler, A.; Li, S. Hydrological Perturbations Facilitated Phyllosphere Denitrification of an Urban Greening Tree. ACS Earth Sp. Chem. 2022, 6, 1460–1467, doi:10.1021/acsearthspacechem.2c00061. 20. Qadeer, A.; Anis, M.; Ajmal, Z.; Kirsten, K.L.; Usman, M.; Khosa, R.R.; Liu, M.; Jiang, X.; Zhao, X. Sustainable development goals under threat? Multidimensional impact of COVID-19 on our planet and society outweigh short term global pollution reduction. Sustain. Cities Soc. 2022, 83, 103962, doi:10.1016/j.scs.2022.103962. 21. Farooq, M.; Arshad, M.I.; Usman, M. Towards universal health coverage in Pakistan: Challenges ahead. Lancet Reg. Heal. - Southeast Asia 2022, 1, 100003, doi:10.1016/j.lansea.2022.03.003. 22. Usman, M.; Anastopoulos, I.; Hamid, Y.; Wakeel, A. Recent trends in the use of fly ash for the adsorption of pollutants in contaminated wastewater and soils: Effects on soil quality and plant growth. Environ. Sci. Pollut. Res. 2022, doi:10.1007/s11356-022-19192-0. 23. Usman, M.; Jellali, S.; Anastopoulos, I.; Charabi, Y.; Hameed, B.H.; Hanna, K. Fenton oxidation for soil remediation: A critical review of observations in historically contaminated soils. J. Hazard. Mater. 2022, 424, 127670, doi:10.1016/j.jhazmat.2021.127670. 24. Wei, Y.; Usman, M.; Farooq, M.; Adeel, M.; Haider, F.U.; Pan, Z.; Chen, W.; Liu, H.; Cai, L. Removing Hexavalent Chromium by Nano Zero-Valent Iron Loaded on Attapulgite. Water. Air. Soil Pollut. 2022, 233, doi:10.1007/s11270-022-05513-z. 25. Hamid, Y.; Liu, L.; Usman, M.; Tang, L.; Lin, Q.; Saqib Rashid, M.; Ulhassan, Z.; Hussain, M.I.; Yang, X. Organic/inorganic amendments for the remediation of a red paddy soil artificially contaminated with different cadmium levels: Leaching, speciation, and phytoavailability tests. J. Environ. Manage. 2022, 303, 114148, doi:10.1016/j.jenvman.2021.114148. 26. Mehmood, T.; Liu, C.; Gaurav, G.K.; Haider, F.U.; Bibi, R.; Usman, M.; Mustafa, B.; Liu, J.; Ejaz, M.; Arslan, F. Toxicity and related engineering and biological controls; Elsevier Inc., 2021; ISBN 9780128243442.

Al-nofli, H.; Al-busaidi, R.; Baawain, M.; Choudri, B.S.; Al-fazari, K.; Al-zeidi, K. Views of Community on Social Responsibility of Companies Working in Rural Areas. J. Soc. Sci. Policy Implic. 2021, 9, 1–5, doi:10.15640/10.15640/jsspi.v9n1a1. 2. Al, M.; Ghazi, W.; Rawas, A.; Charabi, Y. Spatiotemporal assessment of Prosopis juliflora invasion : linking invasion pattern to meteorological conditions. Trop. Ecol. 2021, 62, 197–208, doi:10.1007/s42965-020-00136-z. 3. Al-Aufi, K.; Al-Wardy, Malik Choudri, B.S.; Ahmed, M.; Al-Rawas, G.; Al-Mulla, Y. Spatial and Temporal Assessment of Vegetation Cover in Al- Suwaiq Using Satellite Images Analysis. J. Agric. Mar. Sci. [JAMS] 2021, 26, 1–12, doi:10.24200/jams.vol26iss1pp1-12. 4. El, A.M.; Lopez-moreno, J.I.; Mccabe, M.F.; Domínguez-castro, F.; Pe, D.; Al, K.M.; Al-awadhi, T.; Hereher, M.E.; Robaa, S.M.; Al, N.; et al. The impact of COVID-19 lockdowns on surface urban heat island changes and air-quality improvements across 21 major cities in the Middle East ☆ , ☆☆. 2021, 288, doi:10.1016/j.envpol.2021.117802. 5. Abulibdeh, A.; Al-awadhi, T.; Al, N.; Al-buloshi, A.; Abdelghani, M. Groundwater for Sustainable Development Spatiotemporal mapping of groundwater salinity in Al-Batinah , Oman. Groundw. Sustain. Dev. 2021, 12, 100551, doi:10.1016/j.gsd.2021.100551. 6. Mansour, S.; Al-awadhi, T.; Nasiri, N. Al Geospatial analysis of female fertility in Oman : do immigrant female domestic workers make a difference ? Asian Popul. Stud. 2021, 17, 30–50, doi:10.1080/17441730.2020.1800224. 7. Al-Fazari, A.; El-Kenawy, A.; Al-Nasiri, N.; Hereher, M. Monitoring Urban Heat Islands in Selected Cities of the Gulf Region Based on Nighttime MODIS LST Data (2003–2018). In Urban Heat Island (UHI) Mitigation Hot and Humid Regions; Enteria, N., Santamouris, M., Ursula, E., Eds.; Springer, 2021; pp. 249–275 ISBN 9789813340497. 8. Ahsan, A.; Al-mulla, Y.A.; Charabi, Y.; Al-rawas, G.; Al-wardy, M. Satellite-Based Water and Energy Balance Model for the Arid Region to Determine Evapotranspiration : Development and Application. Sustain. 2021, 13, 13111, su132313111. 9. Ramadan, E.; Al-Awadhi, T.; Charabi, Y. Land Cover / Land Use Change and Climate Change in Dhofar Governorate, Oman. Int. J. Geoinformatics 2021, 17, 41–47, 10. Al Kindi, K.; Al-mawali, A.; Akharusi, A.; Alshukaili, D.; Alnasiri, N.; Al-awadhi, T.; Charabi, Y.; El Kenawy, A.M. Demographic and socioeconomic determinants of COVID-19 across Oman - A geospatial modelling approach. 2021, 16, doi:10.4081/gh.2021.985. 11. Ahsan, A.; A., A.-M.Y.; Charabi, Y.; Al-Wardy, M.; Al-Rawas, G. Use of multispectral and thermal satellite imagery to determine crop water requirements using SEBAL , METRIC , and SWAP models in hot and hyper-arid Oman. Arab. J. Geosci. 2021, 14, 634, 12. Al-hinai, A.; Charabi, Y.; Kaboli, S.H.A. Offshore Wind Energy Resource Assessment across the Territory of Oman : A Spatial-Temporal Data Analysis. Sustain. 2021, 13, 2862, 13. Charabi, Y. Digging deeper into cutting methane emissions from the oil and gas industry in the era of volatile prices. Mitig. Adapt. Strateg. Glob. Chang. 2021, 1–15, doi:10.1007/s11027-021-09948-3. 14. Ahsan, A.; Al-Mulla, Y.; Charabi, Y.; Al-Rawas, G.; Al-Wardy, M. Remote Sensing Approach for Estimating Evapotranspiration Using Satellite-Based Energy Balance Models in Al Hamra, Oman. In Water Resources in Arid Lands : Management and Sustainability; Al-Maktoumi, A., Abdalla, O., _Kacimov, A., Zekri, S., Chen, M., Al-Hosni, T., Kaveh, M., Eds.; Springer, 2021; pp. 73–79 ISBN 9783030670276. 15. Hadroug, S.; Jellali, S.; Amine, A.; Marzena, A.; Helmi, K.; James, H. Valorization of salt post ‑ modified poultry manure biochars for phosphorus recovery from aqueous solutions : investigations on adsorption properties and involved mechanism. Biomass Convers. Biorefinery 2021, doi:10.1007/s13399-021-02099-0. 16. Tertouche, S.A.; Bellebia, S.; Bengharez, Z.; Zian, Z.; Jellali, S. Performance Assessment of Wastewater Treatment Plants ( WWTPs ) and Application of Electrocoagulation Process to Improve Their Operation. Pol. J. Environ. Stud. 2021, 30, 5273–5284, doi:10.15244/pjoes/134084. 17. Hechmi, S.; Hamdi, H.; Mokni-tlili, S.; In, R. Variation of soil properties with sampling depth in two different light-textured soils after repeated applications of urban sewage sludge. J. Environ. Manage. 2021, 297, 113355, doi:10.1016/j.jenvman.2021.113355. 18. Hindiyeh, M.; Albatayneh, A.; Tarawneh, R.; Suleiman, S.; Juaidi, A.; Abdallah, R.; Jellali, S.; Jeguirim, M. Preparedness Plan for the Water Supply Infrastructure during Water Terrorism—A Case Study from Irbid, Jordan. Water (Switzerland) 2021, 13, 2887, 19. Azzaz, A.A.; Jellali, S.; Ben Harharah Hamed, N.; El Jery, A.; Khezami, L.; Assadi, A.A.; Amrane, A. Photocatalytic Treatment of Wastewater Containing Simultaneous Organic and Inorganic Pollution : Competition and Operating Parameters Effects. Catalysts 2021, 11, 855, catal11070855. 20. Jellali, S.; Khiari, B.; Usman, M.; Hamdi, H.; Charabi, Y.; Jeguirim, M. Sludge-derived biochars: A review on the influence of synthesis conditions on pollutants removal efficiency from wastewaters. Renew. Sustain. Energy Rev. 2021, 144, 111068, doi:10.1016/j.rser.2021.111068. 21. Bargaoui, M.; Jellali, S.; Azzaz, A.A.; Jeguirim, M.; Akrout, H. Optimization of hybrid treatment of olive mill wastewaters through impregnation onto raw cypress sawdust and electrocoagulation. Environ. Sci. Pollut. Res. 2020, doi:10.1007/s11356-020-08907-w. 22. Khiari, B.; Ibn Ferjani, A.; Azzaz, A.A.; Jellali, S.; Limousy, L.; Jeguirim, M. Thermal conversion of flax shives through slow pyrolysis process: in-depth biochar characterization and future potential use. Biomass Convers. Biorefinery 2020, doi:10.1007/s13399-020-00641-0. 23. Jellali, S.; Charabi, Y.; Usman, M.; Al-Badi, A.; Jeguirim, M. Investigations on biogas recovery from anaerobic digestion of raw sludge and its mixture with agri-food wastes: Application to the largest industrial estate in Oman. Sustain. 2021, 13, doi:10.3390/su13073698. 24. Jeguirim, M.; Jelalli, S. Wastewater Treatment, Valorization, and Reuse. Water (Switzerland) 2021, 13, 548, w13040548. 25. El-Bassi, L.; Azzaz, A.A.; Jellali, S.; Akrout, H.; Marks, E.A.N.; Ghimbeu, C.M.; Jeguirim, M. Application of olive mill waste-based biochars in agriculture: Impact on soil properties, enzymatic activities and tomato growth. Sci. Total Environ. 2021, 755, doi:10.1016/j.scitotenv.2020.142531. 26. Hadroug, S.; Jellali, S.; Jeguirim, M.; Kwapinska, M.; Hamdi, H.; Leahy, J.J.; Kwapinski, W. Static and dynamic investigations on leaching/retention of nutrients from raw poultry manure biochars and amended agricultural soil. Sustain. 2021, 13, 1–26, doi:10.3390/su13031212. 27. Haddad, K.; Jeguirim, M.; Jellali, S.; Thevenin, N.; Ruidavets, L.; Limousy, L. Biochar production from Cypress sawdust and olive mill wastewater: Agronomic approach. Sci. Total Environ. 2020, doi:10.1016/j.scitotenv.2020.141713. 28. Jellali, S.; Azzaz, A.A.; Jeguirim, M.; Hamdi, H.; Mlayah, A. Use of lignite as a low-cost material for cadmium and copper removal from aqueous solutions: Assessment of adsorption characteristics and exploration of involved mechanisms. Water (Switzerland) 2021, 13, doi:10.3390/w13020164. 29. Azzaz, A.A.; Jellali, S.; Jeguirim, M.; Bousselmi, L.; Bengharez, Z.; Akrout, H. Optimization of a cationic dye desorption from a loaded-lignocellulosic biomass: factorial design experiments and investigation of mechanisms. Comptes Rendus. Chim. 2021, 24, 1–14, doi:10.5802/crchim.83. 30. Mlayah, A.; Jellali, S.; Azzaz, A.A.; Jeguirim, M. Investigations on lignite use for lead removal from aqueous solutions under static and dynamic conditions: adsorption properties and mechanism exploration. Comptes Rendus Chim. 2021, 24, 7–22, 31. Jeguirim, M.; Jellali, S. Wastewater treatment, Valorization and Reuse; Jeguirim, M., Jellali, S., Eds.; MDPI, 2021; Vol. 13; ISBN 978-3-0365-1927-2. 32. Ahmed, A.; Pan, B.; Qin, J.; Zhu, Q.; Lichtfouse, E.; Usman, M.; Wang, C. Sustainable ferrate oxidation : Reaction chemistry , mechanisms and removal of pollutants in wastewater. Environ. Pollut. 2021, 290, 117957, doi:10.1016/j.envpol.2021.117957. 33. Qadeer, A.; Ajmal, Z.; Usman, M.; Zhao, X.; Chang, S. Resources , Conservation & Recycling Agricultural plastic mulching as a potential key source of microplastic pollution in the terrestrial ecosystem and consequences. Resour. Conserv. Recycl. 2021, 175, 105855, doi:10.1016/j.resconrec.2021.105855. 34. Mehmood, T.; Kumar, G.; Cheng, L. A review on plant-microbial interactions , functions , mechanisms and emerging trends in bioretention system to improve multi-contaminated stormwater treatment. J. Environ. Manage. 2021, 294, 113108, doi:10.1016/j.jenvman.2021.113108. 35. Haris, M.; Hamid, Y.; Usman, M.; Wang, L.; Saleem, A.; Su, F.; Guo, J.; Li, Y. Crop-residues derived biochar : Synthesis , properties , characterization and application for the removal of trace elements in soils. J. Hazard. Mater. 2021, 416, 126212, doi:10.1016/j.jhazmat.2021.126212. 36. Hamid, Y.; Tang, L.; Hussain, B.; Usman, M.; Liu, L. Environmental Technology & Innovation Sepiolite clay : A review of its applications to immobilize toxic metals in contaminated soils and its implications in soil – plant system. Environ. Technol. Innov. 2021, 23, 101598, doi:10.1016/j.eti.2021.101598. 37. Usman, M.; Farooq, M.; Jellali, S.; Farooq, M.; Charabi, Y.; Al-, A.M. COVID-19 : The Challenges and Opportunities for Water , Air , Agriculture and COVID-19 : The Challenges and Opportunities for Water , Air , Agriculture and Energy Sectors. 2021, doi:10.17957/IJAB/15.1767. 38. System, H.O.M.; Usman, M.; Monfort, O.; Haderlein, S.; Hanna, K. Enhancement of Pentachlorophenol Removal in a Historically Contaminated Soil by Adding Ascorbic Acid to H2O2/Magnetite System. Catalysts 2021, 11, 331, 39. Usman, M.; Ho, Y. COVID-19 and the emerging research trends in environmental studies : a bibliometric evaluation. Environ. Sci. Pollut. Res. 2021, 28, 16913–16924, 40. Usman, M.; Farooq, M.; Farooq, M. Exposure to SARS-CoV-2 in Aerosolized Wastewater : Toilet Flushing , Wastewater Treatment , and Sprinkler Irrigation. Water (Switzerland) 2021, 13, 436, w13040436. 41. Katerina, P.; Anastopoulos, I.; Pashalidis, I.; Hosseini-bandegharaei, A.; Usman, M.; Kornaros, M.; Omirou, M.; Kalderis, D.; Milojkovi, J. V; Lopi, Z.R.; et al. The application of pine-based adsorbents to remove potentially toxic elements from aqueous solutions. In Sorbents Materials for Controlling Environmental Pollution; Elsevier, 2021; pp. 113–133 ISBN 9780128200421. 42. Hussain, A.; Usman, M.; Manj, R.Z.A.; Liu, F.; Li, D.; Liu, Y. Rational Design of Graphene-based Sorbents for Water Purification. In Nanostructured Catalysts for Environmental Applications; Piumetti, M., Bensaid, S., Eds.; Springer, 2021; pp. 309–329 ISBN 9783030589332. 43. Jellali, S.; Hamdi, N.; Riahi, K.; Hamdi, H.; Jeguirim, M. Environmental applications of tomato processing by-products. In TomaTo processing BY-PRODUCTS Sustainable Applications; Jeguirim, M., Zorpas, A.A., Eds.; Elsevier, 2021; pp. 231–283 ISBN 9780128228661. 44. Al-Nadabi, H.H.; Al-Buraiki, N.S.; Al-Nabhani, A.A.; Maharachchikumbura, S.N.; Velazhahan, R.; Al-Sadi, A.M. In vitro antifungal activity of endophytic bacteria isolated from date palm (Phoenix doctylifera L.) against fungal pathogens causing leaf spot of date palm. Egypt. J. Biol. Pest Control 2021, 31, doi:10.1186/s41938-021-00413-6.

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19 September 2022

News Title: Exploratory visit to Jabal Shams.

A team from CESAR made an exploratory visit to Jabal Shams in Al Dakhiliyah Governorate. The aim of the visit was to examine the ecosystem in the mountain and the challenges facing the vegetation growth in the region. Samples from the Juniper trees were taken for further analyses in the laboratories of Sultan Qaboos University (SQU).


31 October 2022 

News Title: Celebration of the Omani Tree Day 

CESAR participated in the celebration of the Omani Tree Day, which was organized by the Life Sciences Unit at the College of Sciences, SQU. This event was held in the botanical garden of the university and was attended by several environmental bodies from inside and outside the university. This celebration was an excellent opportunity to exchange with young school students about the role of trees in the environment preservation. CESAR participated with two posters: 
1- Trees: A life after death?
2- Composts 


5-7 December 2022 

News Title: Participation in The First International Conference on Plant Protection

CESAR’s staff participated in the organization of the First International Conference on Plant Protection. This conference was held in SQU from 5 to 7 December 2023 by the Department of Plant Sciences at the College of Agricultural and Marine Sciences. 
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8 December 2022 

News Title: Participation in the International Symposium on Strategies for Sustaining Wheat Production 

CESAR’s researchers attend the International Symposium on Strategies for Sustaining Wheat Production held in the College of Agricultural and Marine Sciences. This symposium reviewed the challenges faced by the wheat crop, the limitations and opportunities available to develop its production in the Sultanate of Oman.
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16 - 18 January 2023 

News Title: Organization and participation in the First edition of “Oman Conference for Environmental Sustainability”

CESAR’s staff has participated to the organization of the First edition of “Oman Conference for Environmental Sustainability”. This event was inaugurated by his Highness Sayyid Theyazin, the Minister of Culture, Sports and Youth. This event was held in the International Convention and Exhibition Center and focused on atmospheric pollution and climate change. More than 400 participants attended the conference from 25 countries.

Two oral presentations were performed by CESAR’s staff:

1- Dr. Ahlam Al-Hanai: Deployment of Low Cost PM 2.5 Sensors to Investigate the Spatial Distribution of Fine PM in Muscat, Oman

2- Dr. Salah Jellali: Recent advances in biochars applications for climate change mitigation and wastes sustainable management

Moreover, two sessions were chaired by CESAR staff:

1- Dr. Hassan Al-Reasi: Environmental Effects & health impacts of air pollution 

2- Dr. Salah Jellali: Climate Change Impacts and Resilient Development
More details: Click for more details