TY - JOUR

T1 - Phosphorus-iron interaction in sediments

T2 - can an electrode minimize phosphorus release from sediments?

AU - Martins, Gilberto

AU - Peixoto, Luciana

AU - Brito, António G.

AU - Nogueira, Regina

N1 - Funding Information: Acknowledgments The authors are grateful to two anonymous reviewers of a previous version of the manuscript for the constructive comments and suggestions. The authors also acknowledge the Grant SFRH/BPD/80528/2011 from the Foundation for Science and Technology, Portugal, awarded to Gilberto Martins.

PY - 2014/9

Y1 - 2014/9

N2 - All restoration strategies to mitigate eutrophication depend on the success of phosphorus (P) removal from the water body. Therefore, the inputs from the watershed and from the enriched sediments, that were the sink of most P that has been discharged in the water body, should be controlled. In sediments, iron (hydr)oxides minerals are potent repositories of P and the release of P into the water column may occur upon dissolution of the iron (hydr)oxides mediated by iron reducing bacteria. Several species of these bacteria are also known as electroactive microorganisms and have been recently identified in lake sediments. This capacity of bacteria to transfer electrons to electrodes, producing electricity from the oxidation of organic matter, might play a role on P release in sediments. In the present work it is discussed the relationship between phosphorus and iron cycling as well as the application of an electrode to work as external electron acceptor in sediments, in order to prevent metal bound P dissolution under anoxic conditions.

AB - All restoration strategies to mitigate eutrophication depend on the success of phosphorus (P) removal from the water body. Therefore, the inputs from the watershed and from the enriched sediments, that were the sink of most P that has been discharged in the water body, should be controlled. In sediments, iron (hydr)oxides minerals are potent repositories of P and the release of P into the water column may occur upon dissolution of the iron (hydr)oxides mediated by iron reducing bacteria. Several species of these bacteria are also known as electroactive microorganisms and have been recently identified in lake sediments. This capacity of bacteria to transfer electrons to electrodes, producing electricity from the oxidation of organic matter, might play a role on P release in sediments. In the present work it is discussed the relationship between phosphorus and iron cycling as well as the application of an electrode to work as external electron acceptor in sediments, in order to prevent metal bound P dissolution under anoxic conditions.

KW - Bioelectricity

KW - Biogeochemical processes

KW - Eutrophication

KW - Phosphorus cycling

KW - Sediment bacterial community

UR - http://www.scopus.com/inward/record.url?scp=84905260510&partnerID=8YFLogxK

U2 - 10.1007/s11157-014-9343-5

DO - 10.1007/s11157-014-9343-5

M3 - Review article

AN - SCOPUS:84905260510

VL - 13

SP - 265

EP - 275

JO - Reviews in Environmental Science and Biotechnology

JF - Reviews in Environmental Science and Biotechnology

SN - 1569-1705

IS - 3

ER -