PMID- 34075310
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220701
IS  - 1439-0108 (Print)
IS  - 1614-7480 (Electronic)
IS  - 1439-0108 (Linking)
VI  - 21
IP  - 10
DP  - 2021
TI  - Mechanisms and risks of joint control of nitrogen and phosphorus through sediment 
      capping technology in a pilot-scale study.
PG  - 3427-3437
LID - 10.1007/s11368-021-02985-0 [doi]
AB  - PURPOSE: Nitrogen (N) and phosphorus (P) are the key elements leading to 
      eutrophication, and it is important to jointly control N and P release from 
      sediments into the water column. METHODS: Different mixed materials including P 
      sorbent, natural organic carbon (C), and an oxidizing agent were applied in a 
      1-year pilot-scale experiment. RESULTS: The addition of iron-rich (IR) clay and 
      Phoslock agent promoted the formation of iron bound P (Fe(OOH)~P) and calcium 
      bound P (CaCO(3)~P) in sediments, respectively. IR clay offered more advantages 
      in immobilization of phosphorus as refractory P, and the Phoslock agent more 
      effectively reduced the risk of P release into water, which was expressed as a 
      low equilibrium P concentration (EPC(0)). Mixtures of sugarcane (SU) detritus and 
      IR clay exhibited high carbohydrate (CHO) contents, which further fuelled both 
      denitrification and dissimilatory nitrate reduction to ammonium (DNRA). This 
      indicated that the SU dosage should be controlled to avoid DNRA over 
      denitrification. Attention should be given to the fact that SU introduction 
      significantly promoted the generation of an anaerobic state, leading to the 
      desorption and release of Fe(OOH)~P, which could be alleviated by using Oxone. 
      Multienzyme activity analysis showed that P and N transformation shifted from P 
      desorption to organic P hydrolysis and from ammonification to denitrification and 
      DNRA, respectively. CONCLUSION: We recommend the use of P sorbent and organic C 
      combined with oxidizing agents as effective mixed materials for sediment 
      remediation, which could enhance P adsorption and provide electron donors for 
      denitrification, while also avoiding the generation of anoxia.
CI  - (c) The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of 
      Springer Nature 2021.
FAU - Tang, Mengjuan
AU  - Tang M
AD  - Anhui University, Hefei, 230601 People's Republic of China. GRID: grid.252245.6. 
      ISNI: 0000 0001 0085 4987
FAU - Deng, Qinghui
AU  - Deng Q
AD  - Key Laboratory of Algal Biology, State Key Laboratory of Freshwater Ecology and 
      Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 
      430072 People's Republic of China. GRID: grid.9227.e. ISNI: 0000000119573309
AD  - University of Chinese Academy of Sciences, Beijing, 100039 People's Republic of 
      China. GRID: grid.410726.6. ISNI: 0000 0004 1797 8419
FAU - Cao, Xiuyun
AU  - Cao X
AD  - Key Laboratory of Algal Biology, State Key Laboratory of Freshwater Ecology and 
      Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 
      430072 People's Republic of China. GRID: grid.9227.e. ISNI: 0000000119573309
FAU - Zhou, Yiyong
AU  - Zhou Y
AD  - Key Laboratory of Algal Biology, State Key Laboratory of Freshwater Ecology and 
      Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 
      430072 People's Republic of China. GRID: grid.9227.e. ISNI: 0000000119573309
FAU - Sun, Qingye
AU  - Sun Q
AD  - Anhui University, Hefei, 230601 People's Republic of China. GRID: grid.252245.6. 
      ISNI: 0000 0001 0085 4987
FAU - Song, Chunlei
AU  - Song C
AUID- ORCID: 0000-0003-0606-5174
AD  - Key Laboratory of Algal Biology, State Key Laboratory of Freshwater Ecology and 
      Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 
      430072 People's Republic of China. GRID: grid.9227.e. ISNI: 0000000119573309
LA  - eng
PT  - Journal Article
DEP - 20210528
PL  - Germany
TA  - J Soils Sediments
JT  - Journal of soils and sediments
JID - 101233061
PMC - PMC8159488
OTO - NOTNLM
OT  - DNRA
OT  - Denitrification
OT  - Phosphorus sorption
OT  - Sediment remediation
COIS- Conflict of interestThe authors declare no competing interests.
EDAT- 2021/06/03 06:00
MHDA- 2021/06/03 06:01
PMCR- 2021/05/27
CRDT- 2021/06/02 06:45
PHST- 2020/12/29 00:00 [received]
PHST- 2021/05/23 00:00 [accepted]
PHST- 2021/06/03 06:00 [pubmed]
PHST- 2021/06/03 06:01 [medline]
PHST- 2021/06/02 06:45 [entrez]
PHST- 2021/05/27 00:00 [pmc-release]
AID - 2985 [pii]
AID - 10.1007/s11368-021-02985-0 [doi]
PST - ppublish
SO  - J Soils Sediments. 2021;21(10):3427-3437. doi: 10.1007/s11368-021-02985-0. Epub 
      2021 May 28.