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Exploring a multifunctional geoengineering material for eutrophication remediation: Simultaneously control internal nutrient load and tackle hypoxia
Zhang, Honggang; Lyu, Tao; Liu, Lixuan; Hu, Zhenyuan; Chen, Jun; Su, Bensheng; Yu, Jianwei; Pan, Gang
2021-02-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume406Pages:-
AbstractAn effective approach for control of internal nutrient loading and sediment hypoxia remains a longstanding challenge to the restoration of aquatic ecosystems. In order to simultaneously tackle these issues, a MultiFunction Geoengineering material (MFG) was developed for sediment remediation through the synergistic functions of physical capping, nutrient adsorption and delivery of O-2 nanobubbles. The MFG, derived from natural zeolite, exhibited superior (1.5-4 times higher) adsorption capabilities for both phosphate (PO43P) and ammonium (NH4+-N), than pristine zeolite. The O-2 adsorption capacity was also enhanced from 46, observed in the natural zeolite, to 121 mg O-2/g for the MFG. An in-situ sediment capping experiment in a eutrophic lake demonstrated that the application of MFG dramatically reversed sediment hypoxia (ORP -200 mV) to an aerobic status (ORP 175 mV) and, furthermore, stimulated sediment microbial activity, particularly nitrifying bacteria. The MFG treatment resulted the sediment changing from a nutrient source to a sink through decreasing the cumulative PO43P and NH4+-N fluxes from the sediment by 124.6% and 131.1%, respectively. Moreover, the comprehensive functionalities of the material have been, for the first time, quantified, from which data O-2 nanobubble delivery was determined to be the largest contributor, reducing the fluxes of PO43P and NH4+-N by 57.3% and 56.1% of, respectively. Our findings highlight the viability of such multifunctional material for the remediation of internal nutrient loads in lacustrine environments, towards sustainable eutrophication control.
Department环境水质学国家重点实验室
KeywordEutrophication Internal loading Lake or reservoir restoration Oxygen nanobubble Sediment anoxia
WOS Research AreaEngineering, Environmental ; Engineering, Chemical
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/45942
Collection环境水质学国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Yangtze River Delta Branch, Yiwu 322000, Peoples R China
3.Cranfield Univ, Cranfield Water Sci Inst, Coll Rd, Cranfield MK43 0AL, Beds, England
4.Beijing Univ Chem Technol, High Tech Res Inst, Beijing 100029, Peoples R China
5.Adm Off Summer Palace, Beijing 100091, Peoples R China
6.Nottingham Trent Univ, Sch Anim Rural & Environm Sci, Brackenhurst Campus, Nottingham NG
Recommended Citation
GB/T 7714
Zhang, Honggang,Lyu, Tao,Liu, Lixuan,et al. Exploring a multifunctional geoengineering material for eutrophication remediation: Simultaneously control internal nutrient load and tackle hypoxia[J]. CHEMICAL ENGINEERING JOURNAL,2021,406:-.
APA Zhang, Honggang.,Lyu, Tao.,Liu, Lixuan.,Hu, Zhenyuan.,Chen, Jun.,...&Pan, Gang.(2021).Exploring a multifunctional geoengineering material for eutrophication remediation: Simultaneously control internal nutrient load and tackle hypoxia.CHEMICAL ENGINEERING JOURNAL,406,-.
MLA Zhang, Honggang,et al."Exploring a multifunctional geoengineering material for eutrophication remediation: Simultaneously control internal nutrient load and tackle hypoxia".CHEMICAL ENGINEERING JOURNAL 406(2021):-.
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