Optimal ultrasonic cleaning conditions for regeneration of separation membranes

• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 이윤호(Yun-Ho Lee) 이병대(Byung-Dae Lee)
• 간행물 정보: 『한국응용과학기술학회지』제41권 제6호, 1558~1601쪽, 전체 44쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2024.12.31

국문 초록

In this study, ultrasonic waves were combined with chemical cleaning to regenerate expensive membranes or solid filters. Nitric acid cleaning alone achieved a flux recovery rate of 68%, but when ultrasonic waves were applied simultaneously, the rate increased to 91%. Similarly, cleaning with HYDREX 4710, a membrane detergent, achieved a flux recovery rate of 76%, which improved to 95% when combined with ultrasonic waves. The operational lifespan of the membranes increased by 125 hours when ultrasonic waves were used in conjunction with cleaning agents compared to using an organic detergent alone. SEM and EDX analyses of unused membranes and membranes prior to chemical cleaning revealed significant adsorption of both organic and inorganic substances, such as aluminum (Al) and silicon (Si). These findings demonstrate that combining chemical cleaning with ultrasonic waves is a highly efficient method for membrane regeneration.

목차

1. Introduction

2. Experimental methods

3. Results and discussions

4. Conclusions

Acknowledgment

References

키워드

Ultrasonic cleaning specific flux solid phase filter regeneration transmembrane pressure