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</tr> </table> </td> </tr> <tr><td height="" valign="top" align="center"> <table width="98%" border="0" cellspacing="0" cellpadding="0" align="left"> <tr> <td height="8"></td> </tr> <tr><td align="center" height="100" valign="top"> <table width="99%" border="0" cellspacing="0" cellpadding="0" align="center"> <tr><td class=red_2 align=left></td></tr> <tr> <td align="left"> <table width="98%" border="0" cellspacing="0" cellpadding="0" align="center"> <tr> <td class="style_14_666666"> <div class="f401" id="f401"><div class="introduce" style="margin:10px 15px;padding:8px 12px;font-size:14px;background:#F1F1F1;font-family:""> 核心提示Q近期,来自伦敦帝国理工学院与多伦多大学的科研h员合作,开发出了一U颇L效益的L工具Q用以对xa废水中的原aq行吔RQ关于该研I的文章发表在《自然——可持箋性?Nature Sustainability)杂志上?/div><div id="content" style="margin:0px;padding:0px;font-family:""> <div class="content" id="article" style="margin:0px;padding:10px 20px;font-size:14px;"> <div style="margin:0px 0px 10px 10px;padding:0px;"> <div id="mvdiv_2131150_holder" style="margin:0px;padding:0px;"> <div style="margin:0px;padding:0px;"> <div id="mvdiv_2131150" style="margin:0px;padding:0px;"> </div> </div> </div> </div> <p style="text-indent:2em;"> q期Q来自u敦帝国理工学院与多u多大学的U研人员合作Q开发出了一U颇L效益的L工具Q用以对xa废水中的原aq行吔RQ关于该研I的文章发表在《自然——可持箋性?Nature Sustainability)杂志上? </p> <p style="text-indent:2em;">   </p> <p style="text-indent:2em;"> 在石油生产过E中Q被原a污染的石油废水量一直具有十分可观的数字Q这也直接反映出xa的浪费以及对水体及排攑֜{环境的污染。在成本与环境压力之下,减少含a废水的需求更促进着相关技术的产生。事实上U学家早前已通过试利用湿润vl进行a水؜合物的分,但是这U理忉|功应用于xa废水的处理上却ƈ不久? </p> <p style="text-indent:2em;">   </p> <p style="text-indent:2em;"> 据科研h员介l,q是一U创新的表面工程L(SEnS)Q他们采用了聚}酯沫作为制作材料,表面化学、电荗粗p度有机l合Q可实现对原油微滴的吔R。帝国理工学院化学工E系博士Pavani Cherukupally此前曑ּ发了该种h的早期版本,虽然在这个版本中的vl吸附率可以辑ֈ95%Q但是耗时U有3时Q这比工业处理程序所用的旉q要久,因而在当时q未能得到应用? </p> <p style="text-indent:2em;">   </p> <p style="text-indent:2em;"> 而且我们知道Q虽然聚氨酯泡沫本nh良好的吸Ҏ能Q但是通常q种材料只能在一定的酸性条件下才会表现好的工作效果。ؓ了改善这一技术难题,Q研Ih员在此次研究q程中尝试加入了一U包含纳cx颗_的可以改变聚}酯沫材料质地、化学性质和电L涂层Q该vl|适用的环境酸度条gq一步拓宽? </p> <p style="text-indent:2em;">   </p> <p style="text-indent:2em;"> 研究l果昄Q在能够工作的酸度条g之下Q该吸aL在理夫A?凡d瓦尔?Lifshitz-van der waals)和静电引力的作用之下可以实现快速吸附原油微_原a微滴在酸性、中性以及碱性条件下的去除效率达95~99%。而在理想的pHgQ?0分钟之内Q该Uvl便可以吔R当前实验用量的废水中92%的原油微_虽然吔R率略逊于早期版本Q但效率得到非常大的提升? </p> <p style="text-indent:2em;">   </p> <p style="text-indent:2em;"> 值得我们注意的是QSEnSLĘq具有较好的可重复利用性。vl늻由溶剂处理后可将油萃取而出Q净化后的vl则可再ơ用于原油吸附。ƈ且vl上带有U米晶硅颗粒的涂层可以在qo时将原a微滴紧紧“抓住”,q在L表面形成表面涂层Q而水依然可以从vl中qoq流出,保证了过滤的效果? </p> <p style="text-indent:2em;">   </p> <p style="text-indent:2em;"> 此外Q基于该Uvl吸附性能带来的灵感,U研人员正在合作研究从盐水中去除l菌Qƈ表示Q“尽我们的L为净化工业废水而设计,但是在E水或h条g中用也可以用来改善未来因污染泄漏而带来的环境问题”。而且U研人员q提刎ͼ他们希望在天然气、hl业、采矿业{业生产中也可以用这Uvl,如对x中重金属、病原体{物质的清除Qƈ希望该技术未来可以o发展中国家也能够负担得v? </p> <p style="text-indent:2em;">   </p> <p style="text-indent:2em;"> 目前该研I团队已l在q行对这Uvl进行改性ƈ试工业应用Q也怸久的来我们有Z在工业生产中q泛使用q种技术? </p> </div></div></div> </td></tr></table> </td> </tr> <tr><td height="15" align="center"></td></tr> <tr><td height="5"></td></tr> <tr><td height="15" ></td></tr> <tr><td height="15"></td></tr> <tr> <td height="22" 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