1. Presenter: Value Creation in Environmental Sustainability, Seminar on Environmental Awareness and Action Plans for a Better World”, Grand Hall IKIM, Kuala Lumpur Malaysia, 28 July 2010.
2. Presentation: Transformation of University – The Case of UTM: From technical school to research university, Pyramid Tower Hotel Kuala Lumpur MALAYSIA, 13 July 2010.
3. Presentation: Harnessing Renewable Energy for Sustainable Development, Ministry of Finance, Putrajaya MALAYSIA, 6 July 2010.
4. Plenary Session: Budaya integriti dan idealisme mahasiswa, Kongres Integriti Pemimpin Mahasiswa 2010, PICC Putrajaya MALAYSIA, 11 May 2010.
5. Merdeka Award Lecture Series: ‘Water War? The Science and Politics of Water Management’, Recital Hall, Universiti Malaysia Sabah MALAYSIA, 16 April 2010.
6. Seminar on Education for MARA Professional College and MARA College, Pengantarabangsaan Pendidikan dan Anjakan Paradigma Pendidik, Seminar Pendidikan Kolej Profesional MARA dan Kolej MARA 2010, German Malaysian Institute (GMI), Bangi Selangor, MALAYSIA, 3 April 2010.
7. Environmental Performance Index (EPI): An overview, Workshop on Development of Environmental Performance Index, MNRE Putrajaya MALAYSIA, 16 March 2010
8. Merdeka Award Lecture Series: Value Creation in Water Sustainability, Chancellor Hall, Universiti Teknologi Petronas, Tronoh Perak, MALAYSIA, 3 March 2010.
9. Luncheon Talk: Building and Sustaining Research Culture, Universiti Teknologi Petronas,Tronoh Perak, MALAYSIA, 3 March 2010
10. Keynote Speech: ‘Value Creation in Water Research‘, First IWA Malaysia Young Water Professionals Conference (IWAYWP 2010), Seri Pacific Hotel, Kuala Lumpur, MALAYSIA, 2 March 2010
11. Merdeka Award Lecture Series – A Scholarship Voyage: Academic Iconism, Innovation Ecosystem and Water Sustainability, International Campus Kuala Lumpur, MALAYSIA, 9 February 2010.
12. Keynote Address: The Roles of the Centre of Fiqh Research Science and Technology (CFiRST) to address issues related to fiqh science and technology, Fiqh Science and Technology National Symposium (FST ’09), Johor Bahru MALAYSIA., 11 December 2009.
13. Inaugural ASM Lecture: Blue, Green and Brown: The evolution of water, Seminar Hall, Academy of Sciences Malaysia (ASM), Kuala Lumpur MALAYSIA, 5 December 2009.
14. Keynote Address: Value creation in water sciences: An insight on new pollutants, water chemistry and sustainability, First Conference on Water Chemistry and Health: Quality Water for Health (CWCH1), Putrajaya Marrriot Hotel, Putrajaya MALAYSIA, 24 November 2009.
15. Guest Speaker: Monitoring and Evaluation of Public R&D: The experience of UTM, S&T Management Training Course for OIC Countries, Le Meridien, Kuala Lumpur MALAYSIA. 18 Nov. 2009.
16. Keynote Address, Water Safety Plan: An insight on new pollutants, water chemistry and sustainability, International Symposium of Forensic Science and Environmental Health, PWTC Kuala Lumpur, 10 Nov. 2009.
17. Keynote Speaker, Mengangkasa Pengajian Tinggi Masa hadapan – Menjangkau Bintang Meraih Mercu, Seminar Percambahan Pemikiran Islam: Dimensi 7 Prinsip Universiti APEX, Minden USM, 9 Jun 2009.
18. Keynote Address: Water Sustainability & Strategic Initiatives: A Proposed Water Industry Roadmap 2010-2020, PWTC Kuala Lumpur, 19 May 2009.
19. Keynote Speech: Membrane In Bioprocess Engineering: The case of sustainable water management, International Conference Membrane S&T, Kuala Lumpur, 14 May 2009.
20. Keynote Speaker, Environmental Performance Index (EPI) Perspectives, Strategies and Policy, Hotel Equatorial, Bangi, Selangor, Malaysia, 14 April 2009
21. Keynote Speaker, Water Industry Roadmap: An Academic Perspective, Fourth PETRONAS Water Technology Conference, Kuala Lumpur, 10 Febr. 2009.
22. Keynote Speaker, Research Culture Between Academic and Industrial Innovations, Islamic Economy Congress 3 (KEI-3), Putra World Trade Centre, Kuala Lumpur, 12 Jan 2009 Skudai, 23 Dec 2008.
23. Keynote Address, Water sustainability framework:From water catchmentto water tariff, Water Sustainability Framework, Kuching, Sarawak, 18 Dec 2008.
24. Keynote Speaker, Advances in wastewater technology: Great ideas at laboratory benches, ICEEMAT 2008, PWTC, Kuala Lumpur, Malaysia, 11 Dis 2008.
25. Course Leader, Workshop on Industrial Waste Biotreatment. IPASA, Kuala Lumpur, 20-21 Nov 2007.
26. Participant and paper presenter, World Water Congress, International Water Association, Beijing, China, 10-14 Sept 2006.
27. Keynote Speaker, International Conference on Disaster Management, Ministry of Works, Jakarta Indonesia, December 2006.
28. Chairman and course leader: Environmental Health Risk Assessment, Kuala Lumpur, July 26-27, 2006.
29. Chairman of technical committee, Asia Water 2006, Kuala Lumpur. March 2006.
30. Course Leader, Workshop on Membrane Technology V, Kuala Lumpur. February 2006.
40. Course Leader, Workshop on New Design Procedures for Biological Wastewater Treatment Plants, Kuala Lumpur. March 28-29, 2006
50. Course Leader, Workshop on Geochemical Speciation Model, Kuala Lumpur. April 2006.
51. Keynote speaker, Int. Conf. water rehabilitation, Inst. Teknologi Surabaya, Indonesia. 16-17 May 2006.
52. Plenary speaker, International Conference on Energy and Environment, UNITEN. 28-30 August 2006.
53. Chairman of technical committee, Water Malaysia 2005, Kuala Lumpur. April 2005.
54. Course Leader, Workshop on River Rehabilitation: Principles, Tech. & Applications, K.Lumpur. April 2005.
55. Course Leader, Workshop on Membrane Technology IV, Kuala Lumpur. Sept 2005.
56. Course Leader, Workshop on Lake Management and Rehabilitation, Kuala Lumpur. Oct 2005.
57. Course Leader, Workshop on Sludge Anaerobic Digestion, Kuala Lumpur. March 2005.
58. Course Leader, Workshop on River Rehabilitation: Principles, Tech.& Applications, K.Lumpur. July 2004.
59. Course Leader, Workshop on New Technologies for Cost-Effective Landfill Management, Johor Bahru 28 June 2004 and Kuala Lumpur, 7 July 2004.
60. Course Leader, Workshop on Membrane Technology Wastewater Treatment and Reuse, Surabaya, Indonesia, 12-13 February 2004.
61. Conference chairman (scientific committee), ASIAWATER 2004, Kuala Lumpur, 30-31 March 2004.
62. Keynote speaker & conference chairman, IWA Conference on Environmental Biotechnology: Applications in Water and Wastewater for the Tropics, Kuala Lumpur, 9-10 December 2003.
63. Course Leader & Chairman, Workshop on Sustainable Sanitation for Wastewater Treatment and Reuse, Kuala Lumpur, 11-12 December 2003.
64. Course Leader & Chairman, National Seminar on Membrane Technology II. Malaysian Water Association & UTM. Kuala Lumpur, Sept 2003.
65. Keynote speaker & conference chairman, IWA Conference on Water and Wastewater Management for Developing Countries, Kuala Lumpur, 29-31 October 2001.
66. Speaker and participant, Rockefeller Foundation Team Residency on Membrane Technology for Sustainable Sanitation. April 2003, Bellagio, Italy.
67. Keynote speaker, IWA Conference on Environmental Engineering Education. Zurich, Switzerland, Sept 2003.
68. Course Leader and Chairman, National Workshop on Small Wastewater Treatment Plants, UTM Kuala Lumpur, 6-7 March 2003.
69. Course Leader, IPASA Seminar on Membrane Bioreactor, UTM Skudai, 21 March 2003
70. Invited speaker, Seminar on Water Environment Asia, Tokyo University, Japan. 25 March 2003
71. Course Leader and Chairman, National Workshop on Zero Emissions, EiMAS Bangi, Malaysia. 17-18 April 2003.
72. Course Leader, Workshop on Membrane Technology for Water and Wastewater Applications, UTM Kuala Lumpur, 10-11 July, 2003
73. Speaker and Chairman of the Scientific Committee, LUCED International Conference on Environmental Management, Putrajaya, Malaysia, 4-6 August 2003
74. Key Speaker, National Workshop on Water Quality Improvement in Rivers and Marine Environment, Melaka, Malaysia. 13-16 August 2003
75. Speaker, Cleaner Production Workshop in Food Industry, UPM Serdang, Malaysia August 2003
76. Keynote speaker, Regional Conference on Environmental Technology & Management, Inst. Teknologi Bandung, Indonesia, 9-10 January 2002.
77. Invited speaker, Membrane Technology Seminar, IESE-Nanyang Technological University, Singapore, 19-20 Nov 2002.
78. Invited speaker, Membrane Technology Workshop, IESE-Nanyang Technological University, Singapore, 19-20 Nov 2002.
79. Paper presenter, MUCED Workshop on Trends in Solid Waste Management – Towards Waste Minimization. MUCED, Crystal Crown Hotel, 7-9 May 2002.
80. Paper presenter, Second World Engineering Congress, IEM, Kuching, 22-25 July, 2002.
81. Chairman and paper presenter, IPASA-MUCED Workshop on Automation and Control of Wastewater Treatment Systems. UTM Skudai, 3-4 June 2002.
82. Paper Presenter & Chairman, National Seminar on Immersed Membrane Technology II. UTM & Tokyo Inst. of Technology (Japan). UTM Skudai Campus, November, 2001.
83. Paper Presenter & Chairman, National Seminar on Environmental Modeling. UTM & MUCED (Funded by Danish Cooperation for Environment & Development). UTM Skudai Campus, November, 2001.
84. Keynote Speaker, International Seminar on Industrial Pollution Control. Inst. Teknologi Surabaya, Indonesia, November 2000.
85. Group Leader and Participant, International Workshop on Joint Research Program Between Danish, Malaysian, Thai and South African. Danish University 86. Consortium for Envitonment and Development, Copenhagen, December 2000.
87. Paper Presenter & Chairman, National Seminar on Immersed Membrane Technology. UTM & Musashi Inst. of Technology (Japan). UTM Skudai Campus, August, 2000.
88. Paper Presenter & International Committee Member, 6th International Conference on Pollution in Metropolitan Cities. Co-organizers: Environmental Mgmt & Research Ass. Of Malaysia-UTM. March 20-23, 2000.
89. Paper Presenter & Chairman, National Short Course on Modeling of Biological Wastewater Processes. Inst. Env. & Water Resource Mgmt.-UTM, 3-5 April, 2000.
90. Paper Presenter & Chairman, National Short Course on Molecular Microbial Ecology in Water and Wastewater Applications. Inst. Env. & Water Resource Mgmt.-UTM, 3-5 April, 2000.
91. Paper Presenter, Paper reviewer (5 papers). First World Water Congress. Organizer: International Water Association, Paris, July 2000.
92. Paper Presenter. Establishment & Evaluation of Advanced Water Treatment Technology Systems using Functions of Complex Microbial Community. Organizer: Tokyo University, Tokyo, March 2000.
93. Paper Presenter, Paper reviewer (11 papers) & International Committeee Member. Specialized International Conf. on Membrane Technology in Environmental Management. Co-organizers: International Water Association & Tokyo University, Nov’99.
94. Chairman & Paper presenter. National Seminar on Advanced Wastewater Treatment. Co-organizers: UTM, Environmental Mgmt & Research Ass. of Malaysia & Danish Cooperation for Environmenta & Development, 28-30 January, 1999.
95. Chairman & Paper presenter. National Shortcource on Industrial Air Pollution Control. Co-organizers: UTM & Middlesex University. 9-10 June, 1999.
96. Chairman & Paper presenter. National Shortcource on Clean Technology for Industrial Applications. Organizer: UTM. 6-7 July, 1999.
97. Chairman & Paper presenter. National Shortcource on Membrane Technology for Environmental Control. Organizer: UTM. 8 July 1999.
98. Chairman & Paper presenter. National Shortcource on Sludge Mgmt. Organizer: UTM. 18-19 August, 1999.
99. Chairman & Paper presenter. Regional Shortcource on Sewer as a Physical, Chemical & Biological Reactor. Organizer: UTM. 7-9 September, 1999.
100. Chairman & Paper presenter. Regional Seminar on Medical Waste Management. Co-organizers: UTM & The United States – Asian Environmental Partnership Program. 19-21 Oct, 1999.
101. Participant, International Seminar on Learning for the 21st. Century, Arthur Andersen, Illinois, April 1997.
102. Participant, Academic Tour to Simon Fraser University, Stanford University & UCLA on Multimedia Application for Virtual University Concept, Canada & USA, April 1997.
103. Paper Presenter, Seminar on Health and Environ., Ministry of Health, Kedah, Feb. 1997.
104. Paper reviewer (5 papers) & Paper presenter. IAWQ Binneal Conference on Water Quality International. Vanchouver, Canada. July 1999.
105. Paper Presenter. IAWQ 2nd International Symposium on Wastewater Reclamation and Reuse. Crete, Greece. October 17-20, 1995.
10.6. Paper presenter. IAWQ Binneal Conference on Water Quality International. S’pore, July 1996.
107. Participant, Short Course on Research Methodology, Department of Public Services, Malaysia (JPA) & UTM, Johor Bahru, 1993.
108. Paper Presenter, Departmental Seminar, Department of Environmental & Sanitary Engineering, Univ. Kyoto, Japan, 1993.
109. Paper Presenter & Participant, Leadership Regional Seminar on Environmental and Urban Management in South-East Asia, UTM, Johor Bahru, 1993.
110. Paper Presenter & Participant, Seminar Membina Masyarakat Pencinta Alam Sekitar, International Islamic Univ., Kuala Lumpur, 1993.
111. Paper Presenter, Organising Committee & Participant, Short Course on Environmental Engineering for Non-Environmental Engineers, UTM, Kuala Lumpur, 1993.
112. Paper Presenter, Organising Committee & Participant, National Seminar on Environmental Environmental Control Technology, UTM, Kuala Lumpur, 1993.
113. Participant, Seminar on Environmental Auditing: Methods & Techniques, ENSEARCH, K.Lumpur, 1992.
Paper Presenter & Participant, International Conf. on Environmental Protection and Control Technology, IAWRC & ENSEARCH, Kuala Lumpur, 1992.
114. Paper Presenter & Participant, National Seminar on Civic Education: Youth and Environment, Inst. for Policy Studies, Penang, 1992.
115. Paper Presenter & Participant, UPP Seminar on R&D, UTM, Johor Bahru, 1992.
116. Participant, Kursus Bina Negara Perdana Pertama, Biro Tata Negara, Port Dickson, 1992.
117. Paper Presenter, Seminar on University & Intellectual Tradition, ASASI & UTM, Johor Bahru, 1992.
118. Paper Presenter & Participant, Konvensyen Keprihatinan Isu-Isu Pelajar: Alam Sekitar, National Ass. of Muslim Students, Malaysia (PKPIM), Kuala Lumpur, 1992.
119. Paper Presenter & Participant, National Annual Seminar of Ass. of South-East Asia Inst. of Higher Learning (ASAIHL), UTM, Kuala Lumpur, 1991.
120. Paper Presenter & Participant, 5th. National Symp. on Chemical Analysis, Univ. Malaya, Kuala Lumpur, 1991.
121. Paper Presenter & Participant, 16th. National Sem. of Biochem. Ass. of M,sia, UTM, JB, 1991.
122. Paper Presenter & Participant, 7th. National Symp. of Chemical Engineers, Malaysia (IChEM), Univ. Kebangsaan Malaysia, Kuala Lumpur, 1991.
123. Paper Presenter & Participant, National Seminar on KBSM, UTM, JB, 1989.
124. Paper Presenter & Participant, 3rd. National Symp. on Chem. Analysis, UTM, JB, 1989.
125. Participant, National Workshop on Urban Green, Univ. Malaya & DBKL, KL, 1989.
126. Paper Presenter, Organising Committee & Participant, National Seminar on Water & Wastewater Management, UTM, Kuala Lumpur, 1989.