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Bio-Design and Manufacturing  2021 Vol.4 No.3 P.358~362

10.1631/jzus.2003.0358


Effects of pH and Eh on release of nitrogen and phosphorus from sediments of West Lake


Author(s):  HU Qin-hai, ZHU Yin-mei, SONG Jing, LI Zhen-yu, WEN Jun-jie

Affiliation(s):  College of Environment and Resources, Zhejiang University, Hangzhou 310029, China

Corresponding email(s):   qhhu@zju.edu.cn

Key Words:  West Lake, Sediments, Nitrogen, Phosphorus


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HU Qin-hai, ZHU Yin-mei, SONG Jing, LI Zhen-yu, WEN Jun-jie. Effects of pH and Eh on release of nitrogen and phosphorus from sediments of West Lake[J]. Journal of Zhejiang University Science D, 2021, 4(3): 358~362.

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author="HU Qin-hai, ZHU Yin-mei, SONG Jing, LI Zhen-yu, WEN Jun-jie",
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volume="4",
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pages="358~362",
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%T Effects of pH and Eh on release of nitrogen and phosphorus from sediments of West Lake
%A HU Qin-hai
%A ZHU Yin-mei
%A SONG Jing
%A LI Zhen-yu
%A WEN Jun-jie
%J Journal of Zhejiang University SCIENCE D
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%P 358~362
%@ 1869-1951
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2003.0358

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T1 - Effects of pH and Eh on release of nitrogen and phosphorus from sediments of West Lake
A1 - HU Qin-hai
A1 - ZHU Yin-mei
A1 - SONG Jing
A1 - LI Zhen-yu
A1 - WEN Jun-jie
J0 - Journal of Zhejiang University Science D
VL - 4
IS - 3
SP - 358
EP - 362
%@ 1869-1951
Y1 - 2021
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2003.0358


Abstract: 
The effects of pH and Eh on release of nitrogen and phosphorus from sediments of west Lake under different conditions were investigated by simulation test. Results showed that the net flux of NH4+-N release from sediments increased with pH, but NO3--N showed negative-going release at all tested pH levels. The net flux of NH4+-N release from sediments was higher under anaerobic or aerobic condition of the overlying water, but only under aerobic condition would net release of NO3--N occur. It was also shown that phosphorus released was mainly in its inorganic form, higher pH and anaerobic conditions of overlying water greatly stimulated release of phosphorus. In situ measurement at several west Lake locations indicated that sediment resuspension induced by boat propeller stimulated nutrients release from sediment into overlying water.

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