Aluminium Foundries Circularity via Holistic Zeolite Production for Effluents Depuration

Z-ONA4LIFE aims to recover salt slag as a secondary raw material to produce zeolite, enhance wastewater treatment, and promote a circular economy in the aluminium industry.

Subsidie
€ 2.113.727
2023

Projectdetails

Introduction

The aluminium industry must face a definitive solution for the management of salt slag, included in the European Waste Catalogue as hazardous waste, to improve its still unperfected circularity. The EU produces 1Mt/y of salt slag, and its disposal is banned in most countries. Nowadays, the management of salt slag is a worldwide concern, and its valorisation is not yet solved.

Project Overview

Z-ONA4LIFE envisages a holistic approach to salt slag recovery for Circular Economy, the European Green Deal, and the Sustainable Development Goals (SDGs). It focuses on a new circular zeolite (Z-ONA) production technology and its exploitation to overcome problems associated with the depuration of wastewaters and gas streams. Thus, the environment is improved twice: hazardous waste recovery and effluents depuration.

Resource Recovery

Z-ONA4LIFE considers salt slag as a secondary raw material and creates an opportunity for recovering waste from other industries. The project aims to close the loop between waste generation, its treatment, development of valuable materials, and their future market.

Factors for Selection

Different environmental and economic factors are considered to select salt slag as raw material, including:

  1. Aluminium industry world relevance
  2. Huge salt slag volume
  3. Its hazardousness
  4. High disposal cost
  5. Scarce recovery processes feasible on an industrial scale

Product Valorisation

Zeolite is selected as the optimal product for the valorisation of salt slag due to its wide application in many industrial sectors. The use of Z-ONA is also foreseen when depurating gas streams and wastewater (leachate, livestock, and mining wastewaters) in demonstration plants and real scenarios.

Waste Management

Finally, to reach a near zero-waste process, enhanced compost will be produced from spent zeolites.

Expected Results

  • Recycle 145t of salt slag and 95t of silica waste
  • Produce 220t of zeolite
  • Depurate at least 118m³ of landfill leachate
  • Use at least 100t of zeolite for livestock/mining effluents and gas flow
  • Produce 25t of enhanced compost
  • Produce 120t of organic soil
  • Develop international business and replication plans

Financiële details & Tijdlijn

Financiële details

Subsidiebedrag€ 2.113.727
Totale projectbegroting€ 3.522.879

Tijdlijn

Startdatum1-7-2023
Einddatum30-6-2027
Subsidiejaar2023

Partners & Locaties

Projectpartners

  • AGENCIA ESTATAL CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICASpenvoerder
  • FERROSADIM SOCIEDAD LIMITADA
  • INGENIERIA Y DESARROLLOS RENOVABLESSOCIEDAD LIMITADA
  • COMPANIA PARA LA GESTION DE RESIDUOS SOLIDOS EN ASTURIAS SA
  • TRUST-IT SERVICES SRL
  • ALUSIGMA SA
  • COMMPLA SRL

Land(en)

SpainItaly

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