Development of drinking water purifier using banana waste for point-of-use in rural household

Mohammad Isa, Nor Hidayah (2023) Development of drinking water purifier using banana waste for point-of-use in rural household. [Project Paper] (Submitted)

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Abstract

Introduction: Activated carbon is widely used for water purification due to high specific surface area that provide them excellent adsorbent, high adsorption capacity and high reactivity. Incorporation of silver nano particles into activated carbon as an antibacterial water filter treatment is proved to have broad spectrum of bactericidal properties. Objectives: The aims of this study was to determine the best ratio of ZnC1₂,SDS and time shaking for silver concentration in filtered water and Escherichia coli removal by using activated carbon coated silver nano particles. Methodology: This study involved four stages starting from material preparation, activated carbon by using chemical activation with ZnC1₂, preparation of silver nanoparticles coating by using chemical reduction method that involved used of suitable reducing agent (NaBH₄) and stabilizer, Sodium Dodecyl Sulphate, and lastly, treatment of artificial water using activated carbon by using conventional batch study. Different shaking time was also investigated during the treatment of the artificial water. Results and Discussion: The results shows 100 % of E.coli removal using activated carbon. The first 10 minutes of shaking time during treatment of artificial water are sufficient to reduce E.coli count from 10⁴ cfu/mL to 0 cfu/mL. SDS ratio starting from 0.5 and ZnC1₂ starting from 0.025 shows the 100% removal of E.coli. The highest value of silver concentration in filtered water using activated carbon 0.242 mg/L which at, 0.05 ZnC1₂ ratio, 10 SDS ratio and 10 mins of shaking time. Conclusion The minimum removal percentage of Escherichia coli was 99.94% and the maximum removal percentage of Escherichia coli was 100% by using activated carbon for all ZnC1₂ ratio (0.025,0.05,0.1) with six different SDS ratio (0.5,2,5,10,15,20) and for all different shaking time (10 mins, 20 mins, and 30 mins). The mean for silver concentration was 0.033.The highest value of silver concentration in filtered water using activated carbon was 0.242 mg/L which at, 0.05 ZnC1₂ ratio, 10 SDS ratio and 10 mins of shaking time. Best ratio cannot be determined since that there is no significant difference between ZnC1₂ ratio, SDS ratio, and time shaking for removal percentage of Escherichia coli and silver concentrations in filtered water by using activated carbon. Keywords: Activated carbon, silver nanoparticles, Eschericia coli (E.coli)

Item Type:	Project Paper
Faculty:	Faculty of Medicine and Health Science
Depositing User:	Ms Norafizah Radzuan
Date Deposited:	08 Aug 2024 03:06
Last Modified:	08 Aug 2024 03:06
URI:	http://psaspb.upm.edu.my/id/eprint/1880

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