Siti Nur Syazana Binti Zakaria, <br/><br/>
Performance of natural disinfectant by moringa oleifera seeds extract on fungal disinfection in water supply / 
Siti Nur Syazana Binti Zakaria 
 - xiii,87 pages :  illustrations (some color) ;  30 cm. +  1-CD ROM 
<br/><br/> Faculty of Civil Engineering Technology 
<br/><br/>Thesis (Master of Science) -- Universiti Malaysia Pahang – 2024 
<br/><br/>Include bibliographical reference 
<br/><br/> In recent years, fungal contamination of drinking water has emerged as a significant  concern for water quality. Consequently, extensive research has been conducted to explore  various disinfection methods. Despite existing technologies, limitations, especially the  formation of disinfection by-products, have prompted investigations into alternative  approaches. This study focuses on a promising yet relatively unexplored method employing  plant-extracted disinfectants to inactivate fungal spores for sustainable disinfection in  drinking water distribution systems. The initial phase involves the characterization and  mechanism studies of a plant-based antimicrobial agent extracted from Moringa Oleifera  seeds, specifically terpenoids. The characteristics, including particle size, composition,  textural analysis, and structure of terpenoids, are examined before their introduction into the  disinfection process.In the subsequent phase, the terpenoids are mixed with drinking water  containing fungi, and the impact of agitation rate, temperature, disinfectant terpenoid  concentration, terpenoid-to-fungi volume ratio, and incubation time are systematically  investigated. Mechanism and kinetics studies comparing the control fungi with disinfectant  terpenoids provide insights into the disinfection process. The optimization of key bio-process  parameters is performed to achieve the highest fungal disinfection rate in drinking water  distribution systems. The findings reveal that the Moringa Oleifera seed disinfectant  effectively reduces fungal growth at specific concentrations. Kinetic observations, conducted  through Jar Test experiments, demonstrate a reduction of 2.9-log10 (6.6-ln) for Rhodotorula  Mucilaginosa and 0.9-log10 (2.2-ln) for Aspergillus niger. Physical observations under  FESEM confirm structural damage to both fungi. This study introduces a novel natural fungal  disinfection agent, providing improved microbial process control, cost-effective treatment for  fungal disinfection in drinking water distribution systems, enhanced treatment efficiency, and  an overall elevation in the quality of drinking water. 
<br/><br/><label>ISBN: </label>THE0009855 (Local) 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Faculty of Civil Engineering Technology--Dissertations
<br/><br/><label>Subjects--Topical Terms: </label><br/>Universities and colleges--Dissertations<br/>Theses--Dissertations