维普期刊资源整合服务平台（V6.5）

维普中文期刊产品整合服务

1篇 您的检索式：作者名="Stephan Liebsch"

选中清除导出查看参考文献查看引证文献引用追踪共1页首页上一页第1页下一页末页 /1 跳转

		题名	作者	年代	出处	被引量
	1	Photolysis of hexamethylenediaminetetra(methylenephosphonic acid)(HDTMP)using manganese and hydrogen peroxide显示文摘Aminophosphonates such as hexamethylenediaminetreta(methylene phosphonic acid)(HDTMP)are categorised as persistent substances.They are commonly used as scale inhibitors in cooling water systems and desalination processes.After utilisation,they are often discharged into aquatic environment without pre-treatment.Advanced oxidation processes(AOP)are promising pre-treatments for industrial wastewater treatments.We investigated the photodegradation of HDTMP with or without addition of manganese(Mn2t)and/or H2O2.Similar to results of our former photodegradation studies,we found that HDTMP also undergoes conversion with or without additives during the ultra violet(UV)irradiation.The reaction rate was most affected by the addition of H2O2,i.e.the HDTMP degradation was accelerated by a factor 3.85 compared with UV treatment without additives.The addition of Mn2t accelerated the degradation of HDTMP only by a factor 1.53 compared with the UV treatment without additives.The combined addition of Mn2t and H2O2 accelerated the HDTMP degradation by a factor 2.81.Interestingly,the initial cleavage is not initiated as expected at the CeN bond but at the CeP bond of the methyl carbon and the phosphorus of the methylenephosphonic acid group of HDTMP.This initial cleavage was independent whether the UV treatment was performed with or without additives.Therefore,we conclude that the degradation mechanism is similar independent of the four tested treatment conditions.We identified amino(methylenephosphonic acid)AMPA,dimethylamino(methylenephosphonic acid)DAMP and iminodi(methylenephosphonic acid)IDMP as the major breakdown products by performing LC/MS analyses.The major mineralisation products were ortho-phosphate,ammonium and carbon dioxide.The mass balances of unknown breakdown products allowed us to speculate about the molecular size of the unknown organic breakdown products.	Ramona Kuhn Isaac Mbir Bryant Robert Jensch Stephan Liebsch Marion Martienssen	2020	Emerging Contaminants2020，6，1：	0

返回顶部每页显示：

共1页首页上一页第1页下一页末页 /1 跳转

goolge学术搜索-维普

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费