一、讲座主题
TOWARDS AN INNOVATIVE BIOMIMETIC MEMBRANE USING LOW GRADE GEOTHERMAL ENERGY FOR WATER PURIFICATION
二、主讲人
任天健 南非约翰内斯堡大学教授
三、讲座时间
2018年12月6日（周四）下午18:30
四、讲座地点
千佛山校区东配楼4层报告厅
五、嘉宾简介
任天健（Tien-Chien Jen）教授，1987年获台湾清华大学动力机械工程专业硕士学位，1993年获美国加利福利亚大学机械工程专业博士学位，南非约翰内斯堡大学机械系主任、教授，曾任美国威斯康辛大学密尔沃基分校机械系主任、工学院代理院长、教授。他的主要研究方向是热加工技术、微/纳粒子喷射技术、绿色机械加工技术、燃料电池与氢能、新能源技术、多相流与传热、CFD和数值传热技术、材料成型中的纳米技术和生物传感技术等。已主持完成了美国自然科学基金（NSF）和环境保护局（EPA）等多项课题的研究，已在ASME Journal of Heat Transfer、International Journal of Heat and Mass Transfer、ASME Journal of Manufacturing Engineering and Sciences等期刊和国际会议上发表论文150余篇。
六、报告内容
The discharge of wastewater from industrial, agricultural and domestic activities can decrease the quality of water. Consequently, this reduces sources of potable water for domestic, commercial or industrial use which increases the need to desalinate seawater. Membrane Distillation (MD) is an emerging technology that uses low-temperature thermal energy for water desalination, it functions at near-ambient pressure and temperatures less than about 90°C using hydrophobic membranes. Low grade geothermal heat energy, which usually is wasted to the environment, can be a good source of thermal-energy for the MD technology. The application of Atomic Layer Deposition (ALD) involving nanotechnology for the biomimetic membrane development.The sub-nano-meter based structure created by ALD with precise control can be fine-tuned for the interaction between water and ion which could lead to highly efficient water purification system. The ALD fabricated biomimetic membranes can demonstrate higher water flux which is more efficient than available commercial membranes. Therefore, lower energy desalination plan and high filtration can be achieved by this technology. Energy cost and CO2emission can be reduced.
