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Environmental innovation that serves society

In the area of waste management, ENT adopts a preventative focus, centred on generating less waste and achieving better management. Our main focus has been municipal waste, but we have some experience on construction and demolition waste, industrial waste and mineral oils.

Most of our projects are commissioned by Public Administrations, from very practical projects for Local Authorities to very specific consulting reports for the European Commission or on the framework for European projects, including projects for regional and national authorities (strategies, programmes, design of specific policy instruments, etc.). We also collaborate with universities or research centres and with environmental NGOs, amongst others.

Within the area of waste management, we highlight our experience in economic aspects (costs and economic implications of waste policies) and in the design and evaluation of economic and fiscal policies (waste charges , pay-as-you-throw schemes , taxes on landfilling and incineration, deposit-refund schemes, fee-rebate systems, etc.).

We have also produced various waste management plans for local authorities. In particular, we have a lot of experience in the design and implementation of separate door to door collection schemes .

Another priority area of work is waste prevention, where we have produced numerous waste prevention plans for local entities and projects consisting in implementing specific measures. A specific waste flow in which we have paid particular attention is nappies. Another area in which we have specialized are projects to prevent food waste.

An important part of our work is the framework of research projects, which later derive in a good number of technical and scientific publications.

Building waste management core indicators through Spatial Material Flow Analysis: Net recovery and transport intensity indexes
| Publications| Ignasi Puig Ventosa

In this paper, the material and spatial characterization of the flows within a municipal solid waste (MSW) management system are combined through a Network-Based Spatial Material Flow…

Determining factors for the presence of impurities in selectively collected biowaste
| Publications| Ignasi Puig Ventosa| Jaume Freire González| Marta Jofra Sora

The presence of impurities in biodegradable waste (biowaste) causes problems with the management of waste, among which are additional costs derived from the need to improve pre-treatment of…

La minería de vertedero: nueva estrategia de futuro complementaria al reciclaje de residuos electrónicos en origen
| Publications| Ignasi Puig Ventosa| Maria Calaf Forn

In Spain there are at least 275 million tons of household wastes deposited in landfills. An estimated 50% of the content is land (with some organic matter strongly degraded), between 20 and…

Cap and Trade Schemes on Waste Management: A Case Study on the Landfill Allowance Trading Scheme (LATS) in England
| Publications| Ignasi Puig Ventosa| Maria Calaf Forn

The Landfill Allowance Trading Scheme (LATS) is one of the main instruments used in England to enforce the landfill diversion targets established in the Directive 1999/31/EC of the European…

Performance of compostable baby used diapers in the composting process with the organic fraction of municipal solid waste
| Publications| Ignasi Puig Ventosa| Maria Mestre Montserrat

In modern societies, disposable diapers constitute a significant percentage of municipal solid wastes. They have been traditionally landfilled or incinerated as only limited recycling…

Guide for the Implementation of Pay-As-You-Throw Systems for Municipal Waste
| | Publications| Ignasi Puig Ventosa| Maria Calaf Forn| Maria Mestre Montserrat

Municipal waste management is one of the key areas of municipal environmental policy and is also the item on which town councils spend most resources. Therefore, a wide range of tools…

Waste charges studies
| | Projects

Waste charges can contribute not only to covering the costs associated with waste management, but also to creating an incentive to reduce and separate waste at source. A good design also…

Study of waste management models in isolated rural areas ans islands
| Projects

23% of the Spanish population live in rural areas (12 of 17 regions can be classified as rural) and 6.9% live in islands. Some rural areas have characteristics that make them isolated…

Feasibility studies for the implementation of Door to Door separate waste collection schemes
| Projects

ENT has conducted feasibility studies for the implementation of door to door separate waste collection schemes in a number of municipalities.
These studies start with a diagnosis of the…

Reusable nappies
| Projects

ENT has conducted viability studies for the introduction of reusable nappies in various contexts and has supported various implementations.
With regards to nappies for children we have…