Zhao, Guoqiang1,2; Sheng, Yanqing1
; Li, Changyu1,2; Liu, Qunqun1,2; Hu, Nana1,2发表期刊CHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
2020-04-15
卷号386页码:123791
关键词Organic phosphorusPyrophosphateImmobilizationSynthetic zeoliteLanthanumHumic acid
DOI10.1016/j.cej.2019.123791
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.
资助机构Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [XDA23050203]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41373100]; Key Research and Development Program of Shandong Province [2019GSF109002]
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]Engineering
WOS记录号WOS:000548623400007
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/133337/30468
专题中科院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Res Ctr Coastal Environm Engn Technol Shandong Pr, Yantai, Peoples R China;
2.Univ Chinese Acad Sci, Beijing, Peoples R 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,2020,386:123791.
APAZhao, Guoqiang,Sheng, Yanqing,Li, Changyu,Liu, Qunqun,&Hu, Nana.(2020).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(2020):123791.
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