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2024 IEEE Sustainable Power and Energy Conference, iSPEC 2024

作者： Masri, Hj Mohd Khairul Ja'afar Hj Ang, Swee Peng Dani, Muhammad Norfauzi Universiti Teknologi Brunei Civil Engineering Programme Area Bandar Seri Begawan Brunei Universiti Teknoogi Brunei Electrical and Electronic Engineering Programme Area Bandar Seri Begawan Brunei

ISBN: (纸本)9798350395075

This paper addresses the substantial energy consumption challenges at Universiti Teknologi Brunei (UTB), emphasizing the impact on both the environment and the economy. The proposed strategy aims to address this by focusing on behavioral change and active design strategies in alignment with Brunei Vision 2035 and national sustainability goals, inculcating a culture of energy conservation. Three alternative strategies were thoroughly considered and evaluated based on political support, economics, effectiveness, efficiency, and sustainability. The proposed approach offers a viable solution to solve energy consumption challenges at UTB. By leveraging on technological advancements and fostering changes in behavior, UTB can significantly reduce its energy footprint, contribute to national goals and promote a sustainable future. © 2024 IEEE.

关键词： Sustainable development goals

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Adsorption process efficiency of activated carbon from date pits in removing pollutants from dye wastewater

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Membrane and Water Treatment 2023年第4期14卷 163-173页

作者： Ahsan, A. Erabee, I.K. Nazrul, F.B. Imteaz, M. El-Sergany, M.M. Shams, S. Shafiquzzaman, Md. Department of Civil and Environmental Engineering Islamic University of Technology Gazipur1704 Bangladesh Department of Civil and Construction Engineering Swinburne University of Technology Melbourne Australia Department of Civil Engineering College of Engineering University of Thi-Qar Iraq School of Health and Environmental Studies Hamdan Bin Mohammed Smart University Dubai71400 United Arab Emirates Civil Engineering Programme Area Universiti Teknologi Brunei Jalan Tungku Link Gadong BE1410 Brunei Department of Civil Engineering College of Engineering Qassim University Buraidah51452 Saudi Arabia

The presence of high amounts of organic and inorganic contaminants in textile wastewater is a major environmental concern. Therefore, the treatment of textile wastewater is an urgent issue to save the aquatic environment. The disposal of large quantities of untreated textile wastewater into inland water bodies can cause serious water pollution. In this study, synthetic dye wastewater samples were prepared using orange dye in the laboratory. The synthetic samples were then treated by a batch adsorption process using the prepared activated carbon (AC) from date pits. The wastewater parameters studied were the pH, total dissolved solids (TDS), total suspended solids (TSS), electrical conductivity (EC) and salinity. The activated adsorption process showed that the maximum removal efficiencies of electric conductivity (EC), salinity, TDS and TSS were 65%, 92%, 89% and 90%, respectively. The removal efficiencies were proportional to the increase in contact time (30-120 min) and AC adsorbent dose (1, 3 and 5 g/L). The adsorption profile indicates that 5 g/L of adsorbent delivers better results for TDS, EC, TSS and salinity at contact time of 120 min. The adsorption characteristics are better suited to the pseudo-second-order kinetic model than to the pseudo-first-order kinetic model. The Langmuir and Freundlich isotherms were well suited for describing the adsorption or contact behavior of EC and TSS within the studied system. © 2023 Techno-Press, Ltd.

关键词： Activated carbon

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Energy Consumption at Universiti Teknologi Brunei – A Strategy to Reduce

Energy Consumption at Universiti Teknologi Brunei – A Strat...

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Sustainable Power and Energy Conference (iSPEC)

作者： Hj Mohd Khairul Ja'afar Hj Masri Swee Peng Ang Muhammad Norfauzi Dani Civil Engineering Programme Area Universiti Teknologi Brunei Bandar Seri Begawan Brunei Darussalam Electrical and Electronic Engineering Programme Area Universiti Teknoogi Brunei Bandar Seri Begawan Brunei Darussalam

ISBN: (数字)9798350395075

ISBN: (纸本)9798350395082

关键词： Surveys Economics Energy consumption Energy conservation Focusing Maintenance engineering Maintenance Object recognition Sustainable development Monitoring

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Organic Matter Removal from Sanitary Landfill Leachate Through Chemical Oxidation 1st

Organic Matter Removal from Sanitary Landfill Leachate Throu...

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1st International Conference on Emerging Smart Cities, ICESC 2022

作者： Abdullah, Nurfarizah Didi Binti Isa, Mohamed Hasnain Juani, Rozeana Hj Md Sultan, Asmaal Muizz Sallehhin Bin Hj Mohammad Nayan, Zuliana Binti Hj Mustafa, Muhammad Raza Ul Hengyi Industries Sdn Bhd Jalan Ujong Sapuh Pulau Muara BesarBT3328 Brunei Civil Engineering Programme Area Universiti Teknologi Brunei Tungku Highway GadongBE1410 Brunei Department of Civil and Environmental Engineering Universiti Teknologi PETRONAS Perak Darul Ridzuan Seri Iskandar32610 Malaysia

ISBN: (纸本)9789819911103

Advanced Oxidation Processes (AOPs) have been widely used for wastewater treatment. Persulfate (PS) activation through different pathways has attracted a lot of attention;due to the generation of sulfate radicals which have high oxidation potential. In this study, a series of laboratory-scale experiments were conducted on landfill leachate, using PS/Fe2+/H2O2 and PS/Fe2+/SO32− systems. A statistical design of experiments was adopted using Design Expert 11 software. COD removal efficiency for both systems was evaluated and the optimum operating conditions were determined using Response Surface Methodology. The effects of the independent variables (pH, chemical doses, and reaction) on the removal of COD were studied. The optimised COD removal was 68% at pH 5 for PS/Fe2+/H2O2 system. Fe2+, H2O2, and PS doses were 1.95 mM, 0.05 mM, and 0.50 mM, respectively, with 10 min reaction time. 90% COD removal was obtained at pH 3.67, Fe2+ dose of 0.5 mM, SO32− dose of 0.5 µM, and PS dose of 1.5 mM with 17 min reaction time for PS/Fe2+/SO32− system. © 2024, Institute of Technology PETRONAS Sdn Bhd.

关键词： Iron compounds

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Laboratory-based assessment of geotechnical characteristics of organic waste-amended soil for landfill biocover

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Environmental Science and Pollution Research 2024年第58期31卷 66029-66043页

作者： Rahim, Suaidah Isa, Mohamed Hasnain Shams, Shahriar Jeludin, Muneerah Abdul Rahman, Ena Kartina Hj Md Juani, Rozeana Ul Mustafa, Muhammad Raza Abd Manan, Teh Sabariah Jagaba, Ahmad Hussaini Civil Engineering Programme Area Universiti Teknologi Brunei Tungku Highway GadongBE1410 Brunei Department of Civil & Environmental Engineering Universiti Teknologi PETRONAS Perak Darul Ridzuan Seri Iskandar32610 Malaysia Centre for Urban Resource Sustainability Institute of Self-Sustainable Building Universiti Teknologi PETRONAS Perak Seri Iskandar32610 Malaysia Institute of Tropical Biodiversity and Sustainable Development Universiti Malaysia Terengganu Kuala Nerus Terengganu Darul Iman21030 Malaysia Interdisciplinary Research Centre for Membranes and Water Security King Fahd University of Petroleum and Minerals Dhahran31261 Saudi Arabia

A landfill biocover is essential for addressing environmental concerns, especially in waste management, as it plays a crucial role in mitigating the release of methane gas. This study investigates the geotechnical characteristics of soil amended with organic wastes for landfill biocover applications. Various organic waste amendments, viz., rice husk, crushed coconut coir, and compost, were examined at different percentages (0%, 25%, 50%, and 75%) compared with conventional landfill cover material, i.e. natural clay, as biocovers. Laboratory experiments analysed geotechnical characteristics, including organic content, Atterberg limit, compaction, consolidation, and desiccation cracking. The study revealed that organic waste amendment significantly impacted the geotechnical characteristics of landfill biocover, enhancing organic content and porosity and reducing permeability and desiccation susceptibility. Soils amended with organic content support methanotrophic bacteria growth and reduce methane emissions in landfills. The most promising biocovers were identified as 75CR (crushed coconut coir/wastewater sludge/clay in percentage ratio of 70:5:25), followed by 75CT (compost/wastewater sludge/clay in percentage ratio of 70:5:25), and 25RH (rice husk/wastewater sludge/clay in percentage ratio of 20:5:75). Biocovers offer sustainable landfill alternatives, underscoring the need to understand their geotechnical characteristics for successful installation in landfills. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Composting

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Adopting passive design strategies: A brief review

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AIP Conference Proceedings 2023年第1期2643卷

作者： Nor Aqilah Haji Juffle Md Motiar Rahman Rajul Adli Asli Civil Engineering Programme Area Faculty of Engineering Universiti Teknologi Brunei Tungku Highway Gadong BE1410 Brunei Darussalam

The high amount of energy consumption in residential buildings can considerably be reduced by adopting passive design strategies (PDS), for its positive impact on the environment by reducing energy consumption and CO2 emissions, cost savings and provide occupants’ comfort. This paper summarized the outcomes from a structured literature review. Five broad types of PDS were identified, targeting reduced energy consumption, improved comfort, indoor air quality and materials used. The study also revealed sets of motivators and challenges for adopting PDS. The most common challenges to adopting PDS are high initial cost, lack of expertise and lack of rules and regulations. Also, it was found that the key motivators to stimulate the adoption of PDS include energy efficiency, financial benefits and occupant comfort, health and well-being. This will form the basis for exploring the degree of benefits of considering certain PDS features in residential buildings and their consequent selection/use in specific climate zone, with relevant adjustments to incorporate any local context and priority. The outcomes of this paper are also expected to contribute to raising awareness among stakeholders to increasingly practice PDS considering their relevant benefits, and gradually move to their adoption.

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Industry 4.0 in construction: A conceptual framework

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AIP Conference Proceedings 2023年第1期2643卷

作者： Nurul Syazwana Mohammad Suferi Md Motiar Rahman Ismawi Md Yusof Civil Engineering Programme Area Faculty of Engineering Universiti Teknologi Brunei Tungku Highway Gadong BE1410 Brunei Darussalam

One of the major concerns in construction industry is the changes in business environment. The current emerging issue, which is Industry 4.0, has influenced construction industry to gradually modernize towards a digitalized industry. However, the much-needed technological integration in construction is still minimal. It is evident that construction organizations need to set long-term organizational goals, in addition to its existing project-based practice. Organizations should continuously develop suitable strategy and proactively modernize relevant tools and techniques, by applying principles of strategic management, and improving project management, to meet their organizational goals. A conceptual framework has been formulated to achieve this, by collating critical aspects of project management, strategic management and Industry 4.0; and identifying seven common areas of management, strategy, organization, environment, innovation, project-related issues and human/social issues. According to the conceptualization, organizations need to continuously and proactively update their project management tools and techniques that are used to deliver construction projects. This will be done under both short-term and long-term strategies. While various projects will be undertaken under these strategies, the strategies also need to be updated on the basis of feedback received from completed projects. In this way, organizations are expected to be continuously modernized, to more effectively deliver undertaken projects and achieve organizational success. This is further expected to develop an effective and efficient construction industry.

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Environmental impact of construction waste

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AIP Conference Proceedings 2023年第1期2643卷

作者： Md Motiar Rahman Fatin Shahrun Nizam Ismawi Md Yusof Rajul Adli Asli Civil Engineering Programme Area Universiti Teknologi Brunei Tungku Highway Gadong BE1410 Brunei Darussalam

Construction waste is inevitable in construction process. Although most of the wastes generated are inert and non-toxic, but some wastes, and especially their disposal methods can create considerable environmental impact. As such, this study identified 12 potential environmental impacts or factors through a questionnaire survey of 97 contractors and consultants from Brunei Darussalam. Data was analyzed using the SPSS software. Although some factors were found more important than some other factors, all the 12 factors were found significantly important, both within the total sample and different groups of respondents based on their working organization, nature of job and level of working position. Various respondent groups also significantly agreed on the relative importance of different factors. Factor analysis exercise e extracted four components of water pollution, harmful and toxic substances, climate change and unhealthy environment. The former three components were seen interconnected with very high primary and very secondary contributions of three factors, suggesting an integrated approach of addressing the identified issues. On the other hand, only one principal contribution and one secondary contribution made the ‘climate change’ component, indicating the importance of climate change and that there is a strong relationship of climate change with construction waste. These findings are expected to benefit policy makers in determining the appropriate mitigation measures to construction waste.

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Renewable energy: A brief review

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AIP Conference Proceedings 2023年第1期2643卷

作者： Jie Chie Yong Md Motiar Rahman Rajul Adli Asli Civil Engineering Programme Area Universiti Teknologi Brunei Tungku Highway Gadong BE1410 Brunei Darussalam

Despite their adverse environmental impact and principal cause of climate change, non-renewable fossil fuel-based energy sources currently dominate the global energy use. As such, the search for less harmful and non-depletable alternative sources of energy continues. In this respect, this paper attempted to provide a brief review of commonly available renewable sources of energy; including solar energy, wind energy, hydro power, geothermal, biomass, and wave or tidal energy; covering their generation process, advantages and disadvantages, and suitability for use. Structured literature review approach was applied for this research. It was observed that various types of renewable energy sources have a number of advantages and disadvantages, in terms of their availability, ease of use, and initial installation cost, among others. It was concluded that the overall benefits of selecting a certain type of renewable energy source should outweigh its relevant drawbacks. The outcomes are expected to generate a general awareness among the stakeholders, and in hopes motivate the policy makers to gradually adopt suitable renewable energy systems.

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Geotechnical properties of compost-wastewater sludge-clay biocover for tropical landfills

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AIP Conference Proceedings 2023年第1期2643卷

作者： Suaidah Rahim Mohamed Hasnain Isa Shahriar Shams Muneerah Jeludin 1Civil Engineering Programme Area Universiti Teknologi Brunei Tungku Highway Gadong BE 1410 Brunei Darussalam

The degradation of organic compounds in municipal solid waste (MSW) in landfills could emit harmful methane gas (CH4), which is responsible for over 25% of global warming. This study aims to evaluate the geotechnical effects of using compost-wastewater sludge-natural clay as a daily landfill cover in tropical landfills. Biocover is a potential approach to reduce CH4 emissions from landfills in tropical areas like Brunei Darussalam. Biocover is rich in microbes that are capable of naturally oxidising released CH4. They are much less expensive to install and operate. In this study, the compaction, consolidation, and desiccation cracking properties of four different biocover compositions were investigated in accordance with BS 1377:2018. Compositions of biocover (compost: wastewater sludge: clay) were studied at 0:0:100 (Composition A), 20:5:75 (Composition B), 45:5:50 (Composition C), and 70:5:25 (Composition D) ratios. From a geotechnical standpoint, composition D was found to be more suitable as biocover due to its compactness; its permeability was within the permissible limit of 1×10−9 m/s, and it could sustain heat at 30°C better than clay, with a reduction in average total cracked area of 51.32%-58.82% less than clay.

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