本文主要研究内容
作者吴子康（2019）在《分离膜的亲水化可控制备及其染料截留降解性能研究》一文中研究指出：染料废水具有高色度、高盐度和高毒性的特点,对人类生活环境危害大,是国内外公认的难处理废水之一。开发高效的染料废水处理技术是目前研究的重点。使用酶处理染料废水快速无污染,而分离膜材料则可以对废水中污染物进行截留过滤,因此将酶与分离膜结合,实现对染料废水的降解与分离双重功能,达到高效处理染料废水的目的。漆酶催化底物广泛,可以用于催化降解水中有机污染物及对染料废水脱色,产物对环境几乎无污染。游离态漆酶容易受外界环境影响反应活性,需要进行固定化来提高漆酶在实际应用中的稳定性。以具有良好机械强度及化学稳定性的聚偏氟乙烯(PVDF)微滤膜作为漆酶固定化的载体,对膜进行表面等离子改性,随后引发原子转移自由基聚合(ATRP)反应接枝聚甲基丙烯酸(PGMA),利用PGMA的环氧基团与漆酶的胺基残基反应实现膜表面漆酶的固定化。聚乙烯亚胺(PEI)在膜表面交联形成亲水“网兜”结构,增强膜亲水性及漆酶的稳定性。在广泛的pH值(2-7)及反应温度(20-50 ℃)下改性膜表现出良好的反应活性,其中以浓度为0.5 mmol/L聚乙烯亚胺(PEI)交联改性后的漆酶固定化膜反应活性最高。以染料橙黄I对不同改性膜上漆酶进行降解动力学及动/静态降解测试,证明了漆酶固定化膜可以对染料废水进行降解分离,并可多次重复使用。染料废水中含有大量的无机盐无法降解,制备纳滤膜对无机盐进行截留过滤。在聚醚砜(PES)超滤膜表面进行聚咖啡酸(PCA)涂覆制备复合纳滤膜,以超支化聚甘油(HPG)改性提高膜的亲水性。以橙黄I染料进行截留性能测试,对于浓度范围为5-50 mg/L的染料截留率维持在98%以上,渗透通量可以达到7.9 L/m~2·l·bar以上。改性膜对盐溶液也有较好的截留及渗透效果,对Na2SO4盐溶液截留率达到90%以上,同时渗透通量达到10.61 L/m~2.h·bar,通过HPG末端的邻位羟基对废水中硼进行吸附测试,结果表明在较高硼初始浓度(5 mmol/L)下,改性膜对硼具有良好的吸附作用,经盐酸清洗解吸附后,10次循环仍能达到97%的恢复率。通过以上实验结果证明,成功制备出一种可以对废水中染料、无机盐截留过滤及具备硼吸附能力的复合纳滤膜。
Abstract
ran liao fei shui ju you gao se du 、gao yan du he gao du xing de te dian ,dui ren lei sheng huo huan jing wei hai da ,shi guo nei wai gong ren de nan chu li fei shui zhi yi 。kai fa gao xiao de ran liao fei shui chu li ji shu shi mu qian yan jiu de chong dian 。shi yong mei chu li ran liao fei shui kuai su mo wu ran ,er fen li mo cai liao ze ke yi dui fei shui zhong wu ran wu jin hang jie liu guo lv ,yin ci jiang mei yu fen li mo jie ge ,shi xian dui ran liao fei shui de jiang jie yu fen li shuang chong gong neng ,da dao gao xiao chu li ran liao fei shui de mu de 。qi mei cui hua de wu an fan ,ke yi yong yu cui hua jiang jie shui zhong you ji wu ran wu ji dui ran liao fei shui tuo se ,chan wu dui huan jing ji hu mo wu ran 。you li tai qi mei rong yi shou wai jie huan jing ying xiang fan ying huo xing ,xu yao jin hang gu ding hua lai di gao qi mei zai shi ji ying yong zhong de wen ding xing 。yi ju you liang hao ji xie jiang du ji hua xue wen ding xing de ju pian fu yi xi (PVDF)wei lv mo zuo wei qi mei gu ding hua de zai ti ,dui mo jin hang biao mian deng li zi gai xing ,sui hou yin fa yuan zi zhuai yi zi you ji ju ge (ATRP)fan ying jie zhi ju jia ji bing xi suan (PGMA),li yong PGMAde huan yang ji tuan yu qi mei de an ji can ji fan ying shi xian mo biao mian qi mei de gu ding hua 。ju yi xi ya an (PEI)zai mo biao mian jiao lian xing cheng qin shui “wang dou ”jie gou ,zeng jiang mo qin shui xing ji qi mei de wen ding xing 。zai an fan de pHzhi (2-7)ji fan ying wen du (20-50 ℃)xia gai xing mo biao xian chu liang hao de fan ying huo xing ,ji zhong yi nong du wei 0.5 mmol/Lju yi xi ya an (PEI)jiao lian gai xing hou de qi mei gu ding hua mo fan ying huo xing zui gao 。yi ran liao cheng huang Idui bu tong gai xing mo shang qi mei jin hang jiang jie dong li xue ji dong /jing tai jiang jie ce shi ,zheng ming le qi mei gu ding hua mo ke yi dui ran liao fei shui jin hang jiang jie fen li ,bing ke duo ci chong fu shi yong 。ran liao fei shui zhong han you da liang de mo ji yan mo fa jiang jie ,zhi bei na lv mo dui mo ji yan jin hang jie liu guo lv 。zai ju mi feng (PES)chao lv mo biao mian jin hang ju ga fei suan (PCA)tu fu zhi bei fu ge na lv mo ,yi chao zhi hua ju gan you (HPG)gai xing di gao mo de qin shui xing 。yi cheng huang Iran liao jin hang jie liu xing neng ce shi ,dui yu nong du fan wei wei 5-50 mg/Lde ran liao jie liu lv wei chi zai 98%yi shang ,shen tou tong liang ke yi da dao 7.9 L/m~2·l·baryi shang 。gai xing mo dui yan rong ye ye you jiao hao de jie liu ji shen tou xiao guo ,dui Na2SO4yan rong ye jie liu lv da dao 90%yi shang ,tong shi shen tou tong liang da dao 10.61 L/m~2.h·bar,tong guo HPGmo duan de lin wei qiang ji dui fei shui zhong peng jin hang xi fu ce shi ,jie guo biao ming zai jiao gao peng chu shi nong du (5 mmol/L)xia ,gai xing mo dui peng ju you liang hao de xi fu zuo yong ,jing yan suan qing xi jie xi fu hou ,10ci xun huan reng neng da dao 97%de hui fu lv 。tong guo yi shang shi yan jie guo zheng ming ,cheng gong zhi bei chu yi chong ke yi dui fei shui zhong ran liao 、mo ji yan jie liu guo lv ji ju bei peng xi fu neng li de fu ge na lv mo 。
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论文作者分别是来自天津工业大学的吴子康，发表于刊物天津工业大学2019-07-05论文，是一篇关于漆酶论文,固定化论文,染料废水论文,复合涂层论文,纳滤论文,天津工业大学2019-07-05论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自天津工业大学2019-07-05论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。