The Influence of Redox Potential on Phosphorus Release from Sediments in Different Water Bodies

26 Pages Posted: 13 Mar 2024

See all articles by Lijihong Ye

Lijihong Ye

Chengdu University of Technology

Yao Xiao

Chengdu University of Technology

Jie Qin

Chengdu University of Technology

Jinyong Tang

Chengdu University of Technology

Yuepeng Yin

Chengdu University of Technology

Wen Zhang

Chengdu University of Technology

Abstract

Due to years of anthropogenic impact, many water bodies have sediment rich in phosphorus. The redox potential (Eh) is crucial for determining the adsorption or release of phosphorus from sediments. This study examines the effects of Eh variations under aerobic and anaerobic conditions on the phosphorus release dynamics in different water bodies (rivers, lakes, and reservoirs). Findings include: (1) In sediment-overlying water systems, Eh shows an inverse trend with pH, also affecting metal concentrations; (2) Under anaerobic conditions, sediments release more phosphorus, with iron being a key factor in Eh-regulated phosphorus release; (3) The phosphorus adsorption capacity of lake and reservoir sediments is sensitive to changes between aerobic and anaerobic environments. To prevent algal blooms, stricter regulatory measures are recommended during water level fluctuations in lakes and reservoirs.

Keywords: Redox Environment, Phosphorus Forms, sediments, Adsorption Capacity

Suggested Citation

Ye, Lijihong and Xiao, Yao and Qin, Jie and Tang, Jinyong and Yin, Yuepeng and Zhang, Wen, The Influence of Redox Potential on Phosphorus Release from Sediments in Different Water Bodies. Available at SSRN: https://ssrn.com/abstract=4758307 or http://dx.doi.org/10.2139/ssrn.4758307

Lijihong Ye

Chengdu University of Technology ( email )

Chengdu 610059
China

Yao Xiao

Chengdu University of Technology ( email )

Chengdu 610059
China

Jie Qin

Chengdu University of Technology ( email )

Chengdu 610059
China

Jinyong Tang

Chengdu University of Technology ( email )

Chengdu 610059
China

Yuepeng Yin

Chengdu University of Technology ( email )

Chengdu 610059
China

Wen Zhang (Contact Author)

Chengdu University of Technology ( email )

Chengdu 610059
China

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