{"id":2320,"date":"2023-10-03T15:06:30","date_gmt":"2023-10-03T13:06:30","guid":{"rendered":"https:\/\/urbag.eu\/?p=2320"},"modified":"2023-10-03T15:06:30","modified_gmt":"2023-10-03T13:06:30","slug":"new-publication-in-science-of-total-environment","status":"publish","type":"post","link":"https:\/\/webs.uab.cat\/atmosphere\/2023\/10\/03\/new-publication-in-science-of-total-environment\/","title":{"rendered":"New publication in “Science of The Total Environment”"},"content":{"rendered":"

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See full article\/ Veure l’article complet<\/strong><\/a><\/p>\n

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English:<\/strong><\/p>\n

Urban agriculture (UA) activities are increasing in popularity and importance due to greater food demands and reductions in agricultural land, also advocating for greater local food supply and security as well as the social and community cohesion perspective. This activity also has the potential to enhance the circularity of urban flows, repurposing nutrients from waste sources, increasing their self-sufficiency, reducing nutrient loss into the environment, and avoiding environmental cost of nutrient extraction and synthetization.<\/p>\n

The present work is aimed at defining recovery technologies outlined in the literature to obtain relevant nutrients such as N and P from waste sources in urban areas. Through literature research tools, the waste sources were defined, differentiating two main groups: (1) food, organic, biowaste and (2) wastewater. Up to 7 recovery strategies were identified for food, organic, and biowaste sources, while 11 strategies were defined for wastewater, mainly focusing on the recovery of N and P, which are applicable in UA in different forms.<\/p>\n

The potential of the recovered nutrients to cover existing and prospective UA sites was further assessed for the metropolitan area of Barcelona. Nutrient recovery from current composting and anaerobic digestion of urban sourced organic matter obtained each year in the area as well as the composting of wastewater sludge, struvite precipitation and ion exchange in wastewater effluent generated yearly in existing WWTPs were assessed. The results show that the requirements for the current and prospective UA in the area can be met 2.7 to 380.2 times for P and 1.7 to 117.5 times for N depending on the recovery strategy. While the present results are promising, current perceptions, legislation and the implementation and production costs compared to existing markets do not facilitate the application of nutrient recovery strategies, although a change is expected in the near future.<\/p>\n

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Catal\u00e0:<\/strong><\/p>\n

Les activitats relacionades amb l’agricultura urbana (UA) estan esdevenint m\u00e9s populars i importants a causa de la major demanda d’aliments i la reducci\u00f3 de terres agr\u00edcoles, advocant tamb\u00e9 per un major subministrament i seguretat aliment\u00e0ria local, aix\u00ed com la perspectiva de cohesi\u00f3 social i comunit\u00e0ria. Aquesta activitat tamb\u00e9 t\u00e9 el potencial de millorar la circularitat dels fluxos urbans, reutilitzant nutrients procedents dels residus de les ciutats, augmentant la seva autosufici\u00e8ncia, reduint la p\u00e8rdua de nutrients al medi ambient i evitant el cost ambiental d’extracci\u00f3 i s\u00edntesi de nutrients.<\/p>\n

El present treball t\u00e9 com a objectiu definir tecnologies de recuperaci\u00f3 descrites en la literatura per obtenir nutrients rellevants com N i P a partir de fonts de residus en \u00e0rees urbanes. A trav\u00e9s d’eines de recerca bibliogr\u00e0fica, s’han definit les fonts de residus, diferenciant dos grans grups: (1) aliment\u00e0ries, org\u00e0niques, bioresidus i (2) aig\u00fces residuals. S’han identificat fins a 7 estrat\u00e8gies de recuperaci\u00f3 de fonts aliment\u00e0ries, org\u00e0niques i de bioresidus, mentre que s’han definit 11 estrat\u00e8gies per a les aig\u00fces residuals, centrades principalment en la recuperaci\u00f3 de N i P, aplicables en la UA de diferents formes.<\/p>\n

En aquest estudi s’ha avaluat el potencial dels nutrients recuperats per cobrir les necessitats existents i potencials de la UA per a l’\u00e0rea metropolitana de Barcelona. S’ha avaluat la recuperaci\u00f3 de nutrients del compostatge actual i la digesti\u00f3 anaer\u00f2bia de la mat\u00e8ria org\u00e0nica d’origen urb\u00e0 obtinguda cada any a la zona, aix\u00ed com el compostatge de fangs d’aig\u00fces residuals, precipitaci\u00f3 d’estruvita i intercanvi i\u00f2nic en efluents d’aig\u00fces residuals generats anualment a les EDAR existents. Els resultats mostren que els requisits per a la UA actual i prevista a la zona es poden complir de 2,7 a 380,2 vegades per a P i d’1,7 a 117,5 vegades per a N depenent de l’estrat\u00e8gia de recuperaci\u00f3. Tot i que els resultats actuals s\u00f3n prometedors, les percepcions actuals, la legislaci\u00f3 i els costos d’implementaci\u00f3 i producci\u00f3 en comparaci\u00f3 amb els mercats existents no faciliten l’aplicaci\u00f3 d’estrat\u00e8gies de recuperaci\u00f3 de nutrients, tot i que s’espera un canvi en un futur proper.<\/p>\n

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Graphical abstract <\/b>\u00a0<\/em><\/p>\n

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Title: Literature review on the potential of urban waste for the fertilization of urban agriculture: A closer look at the metropolitan area of Barcelona \/<\/p>\n

Urban agriculture (UA) activities are increasing in popularity and importance due to greater food demands and reductions in agricultural land, also advocating for greater local food supply and security as well as the social and community cohesion perspective. <\/p>\n","protected":false},"author":3153,"featured_media":2329,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[31,251,7,16,252,142,253,254,255,237,233,256,257,258,103,15,259],"class_list":["post-2320","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","tag-agricultura-urbana","tag-aigues-residuals","tag-amb","tag-barcelona","tag-bioresidus","tag-circularity","tag-ciutats","tag-food-demands","tag-nutrient-loss","tag-nutrients","tag-paper","tag-recircularitat","tag-recuperacio-de-nutrients","tag-self-sufficiency","tag-urban","tag-urban-agriculture","tag-waste-sources"],"_links":{"self":[{"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/posts\/2320","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/users\/3153"}],"replies":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/comments?post=2320"}],"version-history":[{"count":0,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/posts\/2320\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/media\/2329"}],"wp:attachment":[{"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/media?parent=2320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/categories?post=2320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/tags?post=2320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}