Harnessing algae–based materials for carbon sequestration and energy efficiency in the built environment

Ismail, Muhammad Hanafi and Othman, Rashidi and Wan Sulaiman, Wan Syibrah Hanisah and Mat Ali, Qurratu Aini (2025) Harnessing algae–based materials for carbon sequestration and energy efficiency in the built environment. In: A design odyssey in the built environment: functionality, aesthetics. Nova Science Publisher, New York, pp. 133-150. ISBN 979-8-89530-765-6

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Abstract

The built environment is a major contributor to carbon emissions and energy consumption, necessitating sustainable solutions. This study explored the potential of algae-based materials as carbon sequestration agents and energy-efficient solutions for buildings. The cyanobacteria, Pseudanabaena amphigranulata (P. amphigranulata) were evaluated under varying pH levels, medium formulations, and photoperiod conditions. The study assessed the growth, carbon sequestration rate (CSR), and light filtration properties of the algae. The findings revealed that a pH value of 6–10 was optimal for the cyanobacteria to grow and achieve a biomass of 0.87±0.41g/L, with a photoperiod of 12–24 hours being able to significantly enhance algae growth. The P. amphigranulata exhibited the highest performance at pH 8, achieving a cell density of 2.4, biomass of 0.87 g/L, and carbon equivalent (CO₂e) of 1.36 g/L. Additionally, it demonstrated the highest chlorophyll absorbance (4.01) and effectively reduced the light intensity by 66.86% (from 1550 to 620 Lux (lx)). These results highlighted the potential of algae-based materials to integrate carbon sequestration and energy-saving functions in buildings. By reducing indoor light intensity and enhancing sustainability, these materials offer an innovative solution for mitigating climate change in the built environment.

Item Type:	Book Chapter
Uncontrolled Keywords:	algae, carbon sequestration, green energy, built environment
Subjects:	N Fine Arts > NA Architecture > NA2542.36 Sustainable architecture T Technology > T Technology (General) T Technology > TP Chemical technology > TP248.13 Biotechnology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	International Institute for Halal Research and Training (INHART) Kulliyyah of Architecture and Environmental Design > Department of Landscape Architecture Kulliyyah of Architecture and Environmental Design
Depositing User:	Dr Wan Syibrah Hanisah Wan Sulaiman
Date Deposited:	17 Dec 2025 17:57
Last Modified:	17 Dec 2025 17:57
URI:	http://irep.iium.edu.my/id/eprint/125866

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