Ce projet a pour objectif de travailler sur un des leviers de gestion de ces infrastructures afin d\u2019optimiser la s\u00e9questration de contaminants contenues dans les eaux de ces r\u00e9seaux et avant r\u00e9-usage de ces eaux de drainage.
\nNous nous int\u00e9ressons ici au r\u00f4le d\u2019un r\u00e9seau d\u2019assainissement agricole comme infrastructure verte participant au cycle de l\u2019eau en contexte m\u00e9diterran\u00e9en agricole. Le levier que nous cherchons \u00e0 analyser est li\u00e9 \u00e0 la limitation du transfert de contaminants organiques par s\u00e9questration via l\u2019utilisation parcimonieuse et cibl\u00e9 d\u2019amendement de biochar au sein du r\u00e9seau d\u2019assainissement agricole. Si l\u2019amendement de biochar est reconnu pour modifier les propri\u00e9t\u00e9s d\u2019adsorption d\u2019une grande diversit\u00e9 de mol\u00e9cules, il reste n\u00e9anmoins un champ entier de questions sur les effets du vieillissement du biochar sur les propri\u00e9t\u00e9s de r\u00e9tention et de d\u00e9gradation \u00e0 plus long terme, ou encore sur le dimensionnement de l\u2019usage d\u2019amendement de biochar comme levier \u00e0 la limitation de la dispersion des contaminants<\/p>\n
Pour r\u00e9pondre \u00e0 ces enjeux, le travail pr\u00e9vu s\u2019appuie sur une approche d\u2019exp\u00e9rimentation et de mod\u00e9lisation. Cette approche se d\u00e9cline sur une compr\u00e9hension des processus \u00e0 l\u2019\u00e9chelle \u00e9l\u00e9mentaire (locale) d\u2019un tron\u00e7on de r\u00e9seau, qui aura pour vocation d\u2019\u00eatre int\u00e9gr\u00e9e \u00e0 l\u2019\u00e9chelle du r\u00e9seau complet, notamment via la mise en \u0153uvre d\u2019outil de mod\u00e9lisation. A ce jour trois items prioritaires sont retenus : i) l\u2019identification des propri\u00e9t\u00e9s physico-chimiques de premier ordre impliqu\u00e9es dans les processus d\u2019adsorption\/d\u00e9sorption et d\u00e9gradation sur des syst\u00e8mes de sol amend\u00e9s par des biochars, ii) l\u2019\u00e9valuation de l’effet du vieillissement des biochars sur la r\u00e9tention et la d\u00e9gradation de contaminants organiques (pesticides) en contexte m\u00e9diterran\u00e9en, iii) le d\u00e9veloppement d\u2019une m\u00e9thodologie de dimensionnement d\u2019amendement de biochars comme levier visant \u00e0 s\u00e9questrer les contaminants au sein des r\u00e9seaux.<\/p>\n
Ce projet est li\u00e9 au projet BROMA (d\u00e9pos\u00e9 en 2022 \u00e0 PRIMA) sur l’usage de biochar pour la limitation de la dispersion des contaminant, et au projet inter-unit\u00e9 AgroExplo (d\u00e9pos\u00e9 en 2021 \u00e0 Agroecosysteme, malheureusement non retenu)<\/p>","protected":false},"author":40,"featured_media":2295,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"categories":[81],"class_list":["post-2288","projets-de-recherche","type-projets-de-recherche","status-publish","has-post-thumbnail","hentry","category-projet-en-cours"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.umr-lisah.fr\/en\/wp-json\/wp\/v2\/projets-de-recherche\/2288","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.umr-lisah.fr\/en\/wp-json\/wp\/v2\/projets-de-recherche"}],"about":[{"href":"https:\/\/www.umr-lisah.fr\/en\/wp-json\/wp\/v2\/types\/projets-de-recherche"}],"author":[{"embeddable":true,"href":"https:\/\/www.umr-lisah.fr\/en\/wp-json\/wp\/v2\/users\/40"}],"version-history":[{"count":5,"href":"https:\/\/www.umr-lisah.fr\/en\/wp-json\/wp\/v2\/projets-de-recherche\/2288\/revisions"}],"predecessor-version":[{"id":2294,"href":"https:\/\/www.umr-lisah.fr\/en\/wp-json\/wp\/v2\/projets-de-recherche\/2288\/revisions\/2294"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.umr-lisah.fr\/en\/wp-json\/wp\/v2\/media\/2295"}],"wp:attachment":[{"href":"https:\/\/www.umr-lisah.fr\/en\/wp-json\/wp\/v2\/media?parent=2288"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.umr-lisah.fr\/en\/wp-json\/wp\/v2\/categories?post=2288"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}