Ultrasound technology as a pre-treatment for biofouling control in reverse osmosis (RO) system
Masters Thesis
Title | Ultrasound technology as a pre-treatment for biofouling control in reverse osmosis (RO) system |
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Type | Masters Thesis |
Authors | |
Author | Al-juboori, Raed Ahmed |
Supervisor | Aravinthan, Vasanthadevi |
Institution of Origin | University of Southern Queensland |
Qualification Name | Master of Engineering |
Number of Pages | 182 |
Year | 2012 |
Abstract | The scarcity of pristine water resources has been a serious issue worldwide. This issue has resulted in the emergence of alternative water resources represented by seawater and wastewater. To treat these water resources, advanced membrane technologies such as Reverse Osmosis (RO) membrane technology are required. In spite of the capability of the RO technology in desalinating seawater and reclaiming It has been reported by many studies that the mechanism of deactivating microorganisms through the use of ultrasound lies in the mechanical effects of acoustic cavitation, especially the pressure shock generated from bubble collapse. The intensity of the pressure shock depends on a number of parameters such as ultrasonic intensity, ultrasonic frequency, temperature of the treated sample, pressure of the treated sample and the initial size of the bubble. Therefore, the effect of these parameters on the intensity of collapse pressure of transient bubbles was The experimental results showed that the optimum process parameters of ultrasound treatment for E. coli disruption are represented by thermosonication treatment at low sub-lethal temperature of E. coli of 45°C. The feed solution of the RO system was prepared by suspending E. coli with a concentration of approximately 4×106 CFU/mL in a MacCONKEY broth. A stirred cell UHP 90 with a maximum capacity of 600 ml was used to simulate the RO system in its batch configuration. The efficiency of ultrasound treatment in reducing the formation of biofouling on the RO membrane was assessed based on two criteria: i) the measured The ultrasound and RO experimental results obtained in this study showed that ultrasound technology can be an effective free-chemical method to control the |
Keywords | alternative water resources; reverse osmosis; RO; membrane fouling; biofouling; ultrasound; pre-treatment |
ANZSRC Field of Research 2020 | 401199. Environmental engineering not elsewhere classified |
401703. Energy generation, conversion and storage (excl. chemical and electrical) | |
400411. Water treatment processes | |
400499. Chemical engineering not elsewhere classified | |
Byline Affiliations | Faculty of Engineering and Surveying |
https://research.usq.edu.au/item/q15w1/ultrasound-technology-as-a-pre-treatment-for-biofouling-control-in-reverse-osmosis-ro-system
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