TY  - THES
TY  - BOOK
T1  - Application of low-cost filter paper coated with silver nanoparticle for escherichia coli removal in emergency situation
A1  - Mohd Izdham Mohd Yuni.
LA  - English
YR  - 2017
UL  - http://discoverylib.upm.edu.my/discovery/Record/566816
AB  - Introduction: A number of water filter products have been invented to overcome unclean drinking water problems during emergency situation which involve contamination of water sources especially on biological contamination. However
there are limitations in the readily made water filter product in the current market. Recent products of water filter invented by manufacturer tend to be high in cost. In emergency situation, the need for cheap and low-cost water filter product is vital. Other than that, some products come with complex instruction-to-use. In emergency situation, public need fast and easy access for clean drinking water. Objectives: The study aimed to test the performance of low-cost filter paper coated with silver nano particle based on two shapes (round and rectangular) with six ratios SDS/AgN0₃ (0.5,2,5,10,15 and 20) to remove Escherichia coli from drinking water to be used during emergency situations. Methodology: The chemical reduction method has been used to coat cellulose filter paper with silver nano particles by using NaBH₄ and AgN0₃ with six difference ratios of SDS/AgN0₃ ranging from 0.5 to 20. Two difference shapes; round and rectangular shapes of filter paper have been tested. The performance of low-cost filter paper coated with silver nano particle for Escherichia Coli removal in emergency situation was tested using artificial water samples with 10⁴ cfu/mL of Escherichia coli. To take into consideration of drinking water quality standards and non-carcinogenic health risks, the optimum SDS/AgN0, ratio for the cellulose filter paper coating was selected by comparing the silver in the effluent with Escherichia coli removal. Results and Discussion: For all six ratios from 0.5.2, 5, 10, 15 and 20, 100% Escherichia coli removal was observed for both filter paper designs. This proved that SDS ratios used can protect the silver nano particle formed on cellulose filter paper during the filtration process. Conclusion: This study still need to consider other factors including field testing before final decision on the best ratio of SDS/AgN0₃ can be made. The best ratio of SDS/AgN0, cannot be determined in regard of no significant difference between ratio of SDS/AgN0, and silver concentration in effluent. The round shape of filter paper was determined as the best shape for filtration when it show the lowest mean of silver concentration compared to rectangular shape. Keywords: Silver nano particles, Escherichia coli (E. coli), low cost filter, emergency
CN  - FPSK4 2017 33
ER  -