Zhao, Guoqiang1,2; Sheng, Yanqing1
; Li, Changyu1,2; Liu, Qunqun1,2; Hu, Nana1,2发表期刊Chemical Engineering Journal
ISSN1385-8947
2019
卷号386页码:123791
关键词Aquatic ecosystemsChelationEutrophicationLanthanumNanorodsOrganic acidsPhotolysisRadioactive waste vitrificationZeolites
DOI10.1016/j.cej.2019.123791
产权排序(1) Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; (2) University of Chinese Academy of Sciences, Beijing, China
通讯作者Sheng, Yanqing(yqsheng@yic.ac.cn)
作者部门海岸带信息集成与综合管理实验室
英文摘要Although phosphorus (P)-removing materials have been widely used to immobilize orthophosphate in aquatic ecosystems, the immobilization of organic phosphorus (OP) and pyrophosphate (PP) remains unclear. In this study, a unique OP/PP-immobilizing synthetic zeolite loaded with humic acid (HA) and La(OH)3 nanorod composite (ZHLA) is synthesized, and OP/PP-immobilization is examined by means of enzymolysis and photolysis. The results indicate that OP and PP could not be photodegraded into PO43? under natural conditions. Although OP could be degraded into PO43? by enhanced Fenton's reagent, La3+ and HA could protect OP and PP from degradation. As a result of the colloidal coagulation and photocatalysis of La(OH)3, the activity of phosphatase could be reduced. The PP and phytate become resistant to enzymolysis through the formation of stable HA–La–PP/phytate or La–PP/phytate chelates. However, labile monoester phosphate could not form stable chelates resisting to enzymolysis. This labile monoester phosphate is hydrolyzed into PO43? and thereafter immobilized by ZHLA, which is the main pathway to achieve permanent immobilization. Most release-sensitive P fractions are transferred to the stable P fraction after ZHLA application. The ZHLA is demonstrated to be an economical and effective P-immobilization material and has high potential as a commercial sediment-capping product for eutrophication control. ? 2019 Elsevier B.V.
文章类型Article in Press
资助机构This study was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No.: XDA23050203 ) and the National Natural Science Foundation of China (Grant No. 41373100 ). Additional support was provided by the Key Research and Development Program of Shandong Province (Grant No. 2019GSF109002 ). Appendix A
收录类别SCI
语种英语
关键词[WOS]COAL FLY-ASH; FRESH-WATER; LAKE-SEDIMENTS; HYDROLYSIS; PHOSPHATE; DEGRADATION; COMPOSITE; PHOTODEGRADATION; BIOAVAILABILITY; EUTROPHICATION
研究领域[WOS]Ecology and Ecosystems
WOS记录号WOS:000548623400007
EI主题词Aquatic ecosystems; Chelation; Eutrophication; Lanthanum; Nanorods; Organic acids; Photolysis; Radioactive waste vitrification; Zeolites
引用统计被引频次：2[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/25218
专题中科院海岸带环境过程与生态修复重点实验室_海岸带信息集成与战略规划研究中心
中科院海岸带环境过程与生态修复重点实验室
作者单位1.Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China;
2.University of Chinese Academy of Sciences, Beijing, China
推荐引用方式
GB/T 7714Zhao, Guoqiang,Sheng, Yanqing,Li, Changyu,et al. Restraint of enzymolysis and photolysis of organic phosphorus and pyrophosphate using synthetic zeolite with humic acid and lanthanum[J]. Chemical Engineering Journal,2019,386:123791.
APAZhao, Guoqiang,Sheng, Yanqing,Li, Changyu,Liu, Qunqun,&Hu, Nana.(2019).Restraint of enzymolysis and photolysis of organic phosphorus and pyrophosphate using synthetic zeolite with humic acid and lanthanum.Chemical Engineering Journal,386,123791.
MLAZhao, Guoqiang,et al."Restraint of enzymolysis and photolysis of organic phosphorus and pyrophosphate using synthetic zeolite with humic acid and lanthanum".Chemical Engineering Journal 386(2019):123791.
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