000106141 001__ 106141
000106141 005__ 20210616191541.0
000106141 0247_ $$2doi$$a10.1016/j.jhydrol.2019.124035
000106141 0248_ $$2sideral$$a114815
000106141 037__ $$aART-2019-114815
000106141 041__ $$aeng
000106141 100__ $$aMargalef-Marti, R.
000106141 245__ $$aFeasibility of using rural waste products to increase the denitrification efficiency in a surface flow constructed wetland
000106141 260__ $$c2019
000106141 5060_ $$aAccess copy available to the general public$$fUnrestricted
000106141 5203_ $$aA surface flow constructed wetland (CW) was set in the Lerma gully to decrease nitrate (NO3 -) pollution from agricultural runoff water. The water flow rate and NO3 - concentration were monitored at the inlet and the outlet, and sampling campaigns were performed which consisted of collecting six water samples along the CW flow line. After two years of operation, the NO3 - attenuation was limited at a flow rate of ~2.5 L/s and became negligible at ~5.5 L/s. The present work aimed to assess the feasibility of using rural waste products (wheat hay, corn stubble, and animal compost) to induce denitrification in the CW, to assess the effect of temperature on this process, and to trace the efficiency of the treatment by using isotopic tools. In the first stage, microcosm experiments were performed. Afterwards, the selected waste material was applied in the CW, and the treatment efficiency was evaluated by means of a chemical and isotopic characterization and using the isotopic fractionation (e) values calculated from laboratory experiments to avoid field-scale interference. The microcosms results showed that the stubble was the most appropriate material for application in the CW, but the denitrification rate was found to decrease with temperature. In the CW, biostimulation in autumn-winter promoted NO3 - attenuation between two weeks and one month (a reduction in NO3 - between 1.2 and 1.5 mM was achieved). After the biostimulation in spring-summer, the attenuation was maintained for approximately three months (NO3 - reduction between 0.1 and 1.5 mM). The e15NNO3/N2 and e18ONO3/N2 values obtained from the laboratory experiments allowed to estimate the induced denitrification percentage. At an approximate average flow rate of 16 L/s, at least 60% of NO3 - attenuation was achieved in the CW. The field samples exhibited a slope of 1.0 for d18O-NO3 - versus d15N-NO3 -, similar to those of the laboratory experiments (0.9–1.2). Plant uptake seemed to play a minor role in NO3 - attenuation in the CW. Hence, the application of stubble in the CW allowed the removal of large amounts of NO3 - from the Lerma gully, especially when applied during the warm months, but its efficacy was limited to a short time period (up to three months). © 2019 Elsevier B.V.
000106141 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/BES-2015-072882$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2014-57215-C4 REMEDIATION$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2015–66016-R AGRO-SOS$$9info:eu-repo/grantAgreement/ES/MINECO/CGL2017-87216-C4-1-R PACE-ISOTEC$$9info:eu-repo/grantAgreement/ES/MINECO/FJCI-2018-24920
000106141 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000106141 590__ $$a4.5$$b2019
000106141 591__ $$aENGINEERING, CIVIL$$b9 / 134 = 0.067$$c2019$$dQ1$$eT1
000106141 591__ $$aWATER RESOURCES$$b6 / 94 = 0.064$$c2019$$dQ1$$eT1
000106141 591__ $$aGEOSCIENCES, MULTIDISCIPLINARY$$b15 / 198 = 0.076$$c2019$$dQ1$$eT1
000106141 592__ $$a1.684$$b2019
000106141 593__ $$aWater Science and Technology$$c2019$$dQ1
000106141 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000106141 700__ $$aCarrey, R.
000106141 700__ $$aMerchán, D.
000106141 700__ $$aSoler, A.
000106141 700__ $$0(orcid)0000-0002-9165-9710$$aCausapé, J.
000106141 700__ $$aOtero, N.
000106141 773__ $$g578 (2019), 124035 [11 pp.]$$pJ. hydrol.$$tJOURNAL OF HYDROLOGY$$x0022-1694
000106141 8564_ $$s1119372$$uhttps://zaguan.unizar.es/record/106141/files/texto_completo.pdf$$yPostprint
000106141 8564_ $$s668465$$uhttps://zaguan.unizar.es/record/106141/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000106141 909CO $$ooai:zaguan.unizar.es:106141$$particulos$$pdriver
000106141 951__ $$a2021-06-16-18:28:17
000106141 980__ $$aARTICLE