Afizah Ayob
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Preferred name
Afizah Ayob
Official Name
Afizah, Ayob
Alternative Name
Ayob, Afizah
Ayob, A.
Afizah, A.
Main Affiliation
Scopus Author ID
23767077500
Researcher ID
D-3484-2018

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  • Publication
    Perspective of Construction Building Professionals on Low-Carbon Materials in Malaysia
    ( 2023-01-01)
    Mohd Rohim Omar
    ;
    Afizah Ayob
    ;
    Hamizah Mokhtar
    ;
    Mohd Hafiz Zakaria
    ;
    Hafnidar A. Rani
    ;
    Nur Soleha Abdul Rahim
    ;
    Farahiyah Abdul Rahman
    Low-carbon (LC) materials and alternative technology must overcome various institutional policy and market constraints to gain greater acceptance in the construction sector. The primary impediments that must be addressed to build a viable and sustainable local construction sector are awareness and knowledge. To analyse the perspective on LC materials in the northern states of Malaysia, 93 companies were surveyed via their construction building professionals (CBPs) on awareness, usage frequency, user experience, drivers for material selection and barriers to LC material adoption in projects. To establish an understanding of CBPs and LC materials, survey data were analysed using semi-structured qualitative-quantitative approaches and the Statistical Package for the Social Sciences (SPSS), influenced by basic theory. 79.57% valid responses indicate that most participants had a low degree of awareness, with 95% confidence that there is no difference in the score levels of the overall viewpoints between architects, civil engineers and structural engineers. While unfired bricks (16.2%) are commonly and widely employed in construction projects, structural insulated panels (40.9%) are the most favourable LC materials for future projects. Client requirements, regulatory requirements and expectations of a shorter completion time are the most important factors driving CBPs to select LC materials, accounting for 44.6%, 37.8% and 37.8%, respectively. According to the CBPs, the main constraint factor to market acceptability is the “Lack of sustainable material information” (44.9%). The proposed recommendations include “Training on designing a building with LC material”, “Clear regulation on limiting carbon emission in a project” and “Increase demonstration of projects and case studies” at a rate ranging from 36.5% to 43.2% to improve client and CBPs acceptance of LC materials for a more sustainable building sector.
      6  37
  • Publication
    Phytoremediation of vegetable leachate by Nymphaea Nouchali
    ( 2020-12-29)
    Mokhtar H.
    ;
    Muhamad N.S.
    ;
    Abdul Rahman N.A.
    ;
    Afizah Ayob
    Leachate normally contains high concentration of pollutants and regulated under stringent discharge standards. Conventional treatments of leachate are no longer adequate to ensure compliance with the standard. Phytoremediation is a relatively new approach to treat leachate contaminated by organic and inorganic substances. Nymphaea Nouchali is an abundant and easy-growing free-floating aquatic plants found in the rice fields, reservoir and polluted ponds. Nymphaea and Nuphar are the most commonly found species in Malaysia. In the last few decades there has been an increasing interest in the study of phytoremediator plants which can serve as an alternative for leachate treatment. The main objective of this study is to determine the effectiveness of organic removal from vegetable leachate (VL) using Nymphaea Nouchali. The results exhibited that after 7 days of phytoremediation, sample R0.5 shows excellent removal of biological oxygen demand (BOD), chemical oxygen demand (COD), colour and suspended solid (SS) to meet the allowable limit.
      4  10