干旱区生态环境知识资源中心(Arid): Effect of intermittent operation on performance of a solar-powered membrane distillation system

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DOI	10.1016/j.seppur.2019.03.055
	Effect of intermittent operation on performance of a solar-powered membrane distillation system
	Hejazi, Mohamad-Anas A.2; Bamaga, Omar A.1; Al-Beirutty, Mohammad H.1,2; Gzara, Lassaad 1; Abulkhair, Hani 1,2
通讯作者	Hejazi, Mohamad-Anas A.
来源期刊	SEPARATION AND PURIFICATION TECHNOLOGY
ISSN	1383-5866
EISSN	1873-3794
出版年	2019
卷号	220 页码:300-308
英文摘要	Solar-powered membrane distillation is a promising technology for water desalination, especially in remote arid areas. However, the intermittent nature of solar irradiation restricts the operation of this technology to the daylight hours. Many studies tried to extend the daily operating period but at the expense of increasing complexity and cost. Therefore, most likely the stand-alone solar-powered system will be operated intermittently. This work is focused on studying the effect of the intermittent operation on a solar-powered MD system performance. A set of experiments were carried out on a bench-scale membrane distillation unit. A programmable temperature-controlled circulating bath was used to generate a feed temperature pattern similar to the temperature output of a solar heater in a real pilot solar-powered system. Different operation shutdown procedures (protocols) were examined to identify the best operation protocol for intermittent operation of MD system. The results showed fluctuations in the daily permeate flux and quality. Moreover, the permeate flux was observed to increase with the thermal expansion of the membrane material. There was a gradual deterioration in membrane module performance in terms of salt rejection when the module left to dry overnight. On the other hand, keeping the saline feed inside the module overnight was found to preserve the performance of the module. Ultrasonic cleaning was applied to the used hollow fiber membranes and found to help in recovering their hydrophobicity. This is observed by an increase in the contact angle values of these membranes from 77 degrees to 98 degrees.
英文关键词	Membrane distillation Solar energy Intermittent operation PVDF hollow fiber membranes
类型	Article
语种	英语
国家	Saudi Arabia
收录类别	SCI-E
WOS记录号	WOS:000466250100034
WOS关键词	DESALINATION ; SEAWATER ; SCALE ; DCMD ; CRYSTALLINE ; MORPHOLOGY ; SEPARATION ; PLANTS ; PHASE ; PVDF
WOS类目	Engineering, Chemical
WOS研究方向	Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218848
作者单位	1.King Abdulaziz Univ, Ctr Excellence Desalinat Technol, POB 80200, Jeddah 21589, Saudi Arabia; 2.King Abdulaziz Univ, Fac Engn, Dept Mech Engn, POB 80204, Jeddah 21589, Saudi Arabia
推荐引用方式 GB/T 7714	Hejazi, Mohamad-Anas A.,Bamaga, Omar A.,Al-Beirutty, Mohammad H.,et al. Effect of intermittent operation on performance of a solar-powered membrane distillation system[J],2019,220:300-308.
APA	Hejazi, Mohamad-Anas A.,Bamaga, Omar A.,Al-Beirutty, Mohammad H.,Gzara, Lassaad,&Abulkhair, Hani.(2019).Effect of intermittent operation on performance of a solar-powered membrane distillation system.SEPARATION AND PURIFICATION TECHNOLOGY,220,300-308.
MLA	Hejazi, Mohamad-Anas A.,et al."Effect of intermittent operation on performance of a solar-powered membrane distillation system".SEPARATION AND PURIFICATION TECHNOLOGY 220(2019):300-308.