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Sustainability 2018, 10(9), 3007;

Reduction of Nitrates in Waste Water through the Valorization of Rice Straw: LIFE LIBERNITRATE Project

Dipartimento di Ing. Civile, Chimica e Ambientale (DICCA), Università degli Studi Genova, 16145 Genoa, Italy
Instituto de Tecnología de Materiales (ITM), Universitat Politècnica de València, 46022 Valencia, Spain
Departament de Química Analítica, Facultat de Química, Universitat de València, 46010 Valencia, Spain
Consorci de la Ribera, 46600 Alzira, Spain
La Unió de Llauradors i Ramaders del País Valencià, 46003 Valencia, Spain
Aguas de Valencia, S.A, 46005 Valencia, Spain
Diputació de València, 46003 Valencia, Spain
Stichting Incubator, 8911KS Leeuwarden, The Netherlands
Author to whom correspondence should be addressed.
Received: 31 July 2018 / Revised: 20 August 2018 / Accepted: 21 August 2018 / Published: 24 August 2018
(This article belongs to the Special Issue Trends in Municipal Solid Waste Management)
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An improved and more sustainable waste management system is required for successful development of technologies based on renewable sources. Rice straw is submitted to controlled combustion reactions and the produced ashes are chemically treated to produce silica. After a chemical activation step, the activated silica shows potential as an adsorbent agent and will be used to remove the excess of nitrates in groundwater and wells in the area of Alginet (Valencia, Spain), selected as a vulnerable zone within the Nitrates Directive. The demonstration activity aims to have a local impact on municipalities of 200 inhabitants or fewer, decreasing from current nitrate concentrations close to 50 mg/L, to a target of 25 mg/L. In a successive step, the methodology will be transferred to other municipalities with similar nitrate problems (Piemonte, Italy) and replicated to remove different pollutants such as manure (the Netherlands) and waste waters from the textile industry (Italy). View Full-Text
Keywords: rice straw; waste management; energy and material recovery; water treatment; nitrate removal rice straw; waste management; energy and material recovery; water treatment; nitrate removal

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Moliner, C.; Teruel-Juanes, R.; Primaz, C.T.; Badia, J.D.; Bosio, B.; Campíns-Falcó, P.; Molíns-Legua, C.; Hernandez, F.; Sanjuan-Navarro, L.; Madramany, P.; Morán, J.; Castro, J.; Sanchis, F.J.; Martínez, J.D.; Hiddink, F.; Ribes-Greus, A.; Arato, E. Reduction of Nitrates in Waste Water through the Valorization of Rice Straw: LIFE LIBERNITRATE Project. Sustainability 2018, 10, 3007.

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