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Huang P, Cai M, Chen F, Liu Z, Ke H, Wang W, Zheng X, Wang C. Roles of temperature and ventilation in oxygen consumption: A chemical kinetics view from the van't Hoff-based formulation. Mar Environ Res 2024; 193:106278. [PMID: 38008015 DOI: 10.1016/j.marenvres.2023.106278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/13/2023] [Accepted: 11/17/2023] [Indexed: 11/28/2023]
Abstract
In this study, we successfully estimated the apparent activation energy of a microbially driven oxygen-consuming reaction (microbial-driven) based on tracer data. The concept of the apparent chemical reaction rate constant was employed to estimate various thermodynamic parameters associated with the oxygen consumption rate in conjunction with Arrhenius/Eyring equations. Normal Ea values of 80-90 kJ mol-1 were found in the upper layers of the South China Sea and Sulu Sea, while higher Ea values (300-1000 kJ mol-1) were observed in the rapidly ventilated Mediterranean Sea, the Sea of Japan, and the Bering Sea with lower temperatures. We classified the characteristics of typical sea basins into four categories. The temperature-dependent oxygen consumption rate relationship in each marine region was systematically calculated to derive the respective thermodynamic characteristic values. This allowed us to parameterize the rate-temperature relationship into thermodynamic quantities, enabling more effective integration of distinct basin characteristics within different sea areas into the marine biochemical model. Parameterization facilitates relatively accurate prediction of changes such as temperature, oxygen consumption rate.
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Affiliation(s)
- Peng Huang
- College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, 524088, China; Key Laboratory of Climate, Resources and Environment in Continental Shelf Sea and Deep Sea of Department of Education of Guangdong Province, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Mingang Cai
- College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, 524088, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China; Xiamen Ocean Vocational College, Xiamen, 361100, China.
| | - Fajin Chen
- College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, 524088, China; Key Laboratory of Climate, Resources and Environment in Continental Shelf Sea and Deep Sea of Department of Education of Guangdong Province, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Zhiqing Liu
- College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Hongwei Ke
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China
| | - Weimin Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China; Zhejiang Institute of Tianjin University, Ningbo, 315000, China
| | - Xuehong Zheng
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China
| | - Chunhui Wang
- College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China
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Lee W, Bresciani E, An S, Wallis I, Post V, Lee S, Kang PK. Spatiotemporal evolution of iron and sulfate concentrations during riverbank filtration: Field observations and reactive transport modeling. J Contam Hydrol 2020; 234:103697. [PMID: 32836105 DOI: 10.1016/j.jconhyd.2020.103697] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 06/14/2020] [Accepted: 08/01/2020] [Indexed: 06/11/2023]
Abstract
Riverbank filtration is a commonly-used technology that improves water quality by passing river water through aquifers. In this study, a riverbank filtration site in Busan, South Korea, was investigated to understand the spatiotemporal evolution of high iron and sulfate concentrations observed in the riverbank-filtered water. Discrepancies between the nonreactive transport results and field measurements suggest that iron-sulfate-related geochemical reactions play a major role in the spatiotemporal evolution of the hydrochemical properties. Pyrite oxidation was hypothesized to be the main process driving the release of iron and sulfate. To test this hypothesis, a reactive transport model was developed, that implemented pyrite oxidation as a kinetic process and subsequent ferrous iron oxidation and ferric iron precipitation as equilibrium processes. The model accurately captured the temporal evolution of sulfate; however, iron concentrations were underestimated. Sensitivity tests revealed that adjusting reaction constants significantly improved the prediction of iron concentrations. The results of this study suggest that pyrite oxidation can affect the hydrochemistry of riverbank-filtered water and highlight the potential limitations of using theoretical reaction constants in field modeling applications.
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Affiliation(s)
- Woonghee Lee
- Department of Earth and Environmental Sciences, University of Minnesota, Twin Cities, MN 55455, USA
| | - Etienne Bresciani
- Water Cycle Research Center, Korea Institute of Science and Technology, Seoul 02792, South Korea
| | - Seongnam An
- Water Cycle Research Center, Korea Institute of Science and Technology, Seoul 02792, South Korea; Department of Earth and Environmental Sciences, Korea University, Seoul 02841, South Korea
| | - Ilka Wallis
- College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia; University of Manitoba, Winnipeg, MB R3T 5V6, Canada
| | - Vincent Post
- Federal Institute for Geosciences and Natural Resources (BGR), Stilleweg 2, 30655 Hannover, Germany
| | - Seunghak Lee
- Water Cycle Research Center, Korea Institute of Science and Technology, Seoul 02792, South Korea; Division of Energy & Environment Technology, KIST School, Korea Institute of Science and Technology, Seoul 02792, South Korea.
| | - Peter K Kang
- Department of Earth and Environmental Sciences, University of Minnesota, Twin Cities, MN 55455, USA; Saint Anthony Falls Laboratory, University of Minnesota, Twin Cities, MN 55414, USA.
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