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Implementation of Green Materials in Construction Management System in Malaysia Chong, Jia Hao; Liu, Madelyn Shiu; Hernandes, Erika; Albescu, Mihaela
Civil and Sustainable Urban Engineering Volume 3 - Issue 1 - 2023
Publisher : Tecno Scientifica Publishing & Society of Tropical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/csue.v3i1.212

Abstract

Construction industry plays an important role in social, economic and environmental developments. However, the unstainable development in the industry has led to environmental issues. Construction waste is one of the biggest problems in the construction industry. In Malaysia, construction waste constitutes a large portion of solid waste every year. Most of the construction waste ends up in landfill without proper treatment. The constriction waste can further lead to other environmental issues. In addition, construction activities have also led to environmental issues such as water pollution, air pollution and noise pollution in the country. Besides, utilization of conventional construction materials in the country also leads to unstainable development in the industry. Conventional concrete is the most used construction material and also the most generated construction waste in a construction project. The production of conventional concrete emits a huge amount of carbon dioxide (CO2) (due to the use of cement), which accounts for 8% to 10% of global anthropogenic CO2 emissions every year. Thus, environmental management practices and utilization of green materials can be the keys to achieve sustainable development in the Malaysian construction industry.
Biosorption of Synthetic Dye by Macrofungi Lee, Kek Kin; Kristanti, Risky Ayu; Yulisa, Arma; Rubiyatno; Ningsih, Fitria; Syafrudin, Muhammad; Hernandes, Erika; Albescu, Mihaela
Industrial and Domestic Waste Management Volume 2 - Issue 2 - 2022
Publisher : Tecno Scientifica Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/idwm.v2i2.108

Abstract

This research project aimed to provide an environmentally friendly method for the decolorization and biosorption of synthetic dye by utilizing fungi as biosorbents. The study was carried out by first growing the fungi in solid medium and then using the fungi as biosorbent to absorb dye in aqueous solution. In the first stage, screening experiments were carried out among 5 different types of fungi, and Pleurotus ostreatus was determined to have the highest growth rate. The Pleurotus ostreatus was recultivated with Remazol Brilliant Blue R dye to determine its dye removal ability. Pleurotus ostreatus sp. exhibited vigorous dye decolorization in agar medium within 2 days. By carrying out batch analysis, 4 parameters were examined, which were the effect of pH, surfactant concentration (Tween 80), salinity concentration and dosage of biosorbent. The results showed that the maximum dye decolourization by Pleurotus ostreatus can be achieved through establishing an acidic condition of pH 2, addition of 0.1mL of Tween 80, 0mg/l of sodium chloride concentration, and dosage of 8 plugs. Lastly, the experimental data was found to fit the Jovanovic Isotherm the most. In conclusion, Pleurotus ostreatus is capable of decolourizing and adsorbing dye particles in the dye aqueous solution.