Effect of ion exchange on the rate of aerobic microbial oxidation of ammonium in hyporheic zone sediments

Yan, Ailan1; Liu, Chongxuan2; Liu, Yuanyuan3; Xu, Fen4

2018-03

10.1007/s11356-018-1217-x

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH   影响因子和分区

0944-1344

1614-7499

Microbially mediated ammonium oxidation is a major process affecting nitrogen transformation and cycling in natural environments. This study investigated whether ion exchange process can affect microbially mediated aerobic oxidation of ammonium in a hyporheic zone (HZ) sediments from the Columbia River at US Department of Energy's Hanford site, Washington State. Experiments were conducted using synthetic groundwater and river water to investigate their effect on ammonium oxidation. Results indicated that ammonium sorption through ion exchange reactions decreased the rate of ammonium oxidation, apparently resulting from the influence of the ion exchange on dissolved ammonium concentration, thus decreasing the bioavailability of ammonium for microbial oxidation. However, with the decrease in dissolved ammonium concentration, the sorbed ammonium released back to aqueous phase, and became bioavailable so that all the ammonium in the suspensions were oxidized. Our results implied a dynamic change in ammonium oxidation rates in an environment such as at HZ where river water and groundwater with different chemical compositions exchange frequently that can affect ammonium sorption and desorption through ion exchange reactions.

Hyporheic zone Nitrogen cycling Ammonium oxidation Ammoniumsorption Ion exchange

SCI

英语

通讯

Shenzhen Science and Technology Innovation Committee[ZDSYS201602261932201]

Environmental Sciences & Ecology

Environmental Sciences

WOS:000427592100068

SPRINGER HEIDELBERG

ENVIRONMENT/ECOLOGY

Web of Science

1.Zhejiang Univ Water Resources & Elect Power, Inst Hydraul & Environm Engn, Hangzhou 310018, Zhejiang, Peoples R China
2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518057, Peoples R China
3.Pacific Northwest Natl Lab, Richland, WA 99354 USA
4.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Hubei, Peoples R China

Yan, Ailan,Liu, Chongxuan,Liu, Yuanyuan,et al. Effect of ion exchange on the rate of aerobic microbial oxidation of ammonium in hyporheic zone sediments[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2018,25(9):8880-8887.

Yan, Ailan,Liu, Chongxuan,Liu, Yuanyuan,&Xu, Fen.(2018).Effect of ion exchange on the rate of aerobic microbial oxidation of ammonium in hyporheic zone sediments.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,25(9),8880-8887.

Yan, Ailan,et al."Effect of ion exchange on the rate of aerobic microbial oxidation of ammonium in hyporheic zone sediments".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 25.9(2018):8880-8887.