文献类型：期刊文献

英文题名：Simultaneous Improvement of Water/Fertility Retention and Physical Properties of Dredged Sediment Using a Novel Composite Amendment

作者：Huo, Peishu[1,2];Fu, Xiaori[1];Che, Zheng[1];Liang, Jingbo[1];Li, Dexiao[3];Liu, Yulong[3];Lyu, Shuguang[3]

机构：[1]Hydropower Construct Co Ltd, China Construct Engn Bur 6, Tianjin 300222, Peoples R China;[2]China Construct Sixth Engn Bur CORP Ltd, Tianjin 300450, Peoples R China;[3]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China

年份：2024

卷号：235

期号：7

外文期刊名：WATER AIR AND SOIL POLLUTION

收录：;EI(收录号：20242616530529);WOS:【SCI-EXPANDED(收录号:WOS:001255485200003)】；

基金：This study was supported by a grant from the "Research and application of ecosystem restoration based on long-lasting governance of malodorous river" of R&D program of China Construction Sixth Engineering Department Co. Ltd. (No. CSCEC6B-2022-Z-15)

语种：英文

外文关键词：Dredged sediment; Composite amendment; Nutrients; Adsorption; Physical properties

摘要：In order to control the eutrophication of rivers or lakes by dredging, a large amount of sediment has been generated, making the treatment of dredged sediment a challenging issue. In response to this problem, we have successfully synthesized an innovative composite amendment for reusing dredged sediment, which included Fe-loaded biochar (Fe@BC), clinoptilolite, wheat straw, and 3,4-dimethylepyrazole phosphate (DMPP). Tests for adsorption and characterization showed that Fe@BC and clinoptilolite, as the main components of the amendment, have excellent adsorption performance for orthophosphate (Ortho-P) and ammonium nitrogen (NH4+-N)/potassium ions (K+), respectively. The results of column leaching experiment demonstrated that the addition of 4%-5% amendment of the sediment mass could not only significantly reduce the leaching of nitrogen (N), phosphorus (P), and potassium (K), but also effectively slowed down the movement of N, P, and K in the sediment profile. Moreover, the bulk density, moisture retention, and particle size of sediment were simultaneously improved.