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News Archive » Waste

Here you will find all articles that have been published in the weekly Science for Environment Policy News Alert.

Browse archives by year and theme below.

Biodegradation of PPCPs in wastewater treatment plants — a Danish case study

The non-restricted production and use of pharmaceuticals and personal care products (PPCPs) has led to their presence in effluents from treatment plants, which can pose a threat to aquatic organisms downstream. This study analysed the breakdown of six common chemicals in four Danish treatment plants. The findings shed new light on the factors affecting removal of PPCPs from waste, showing that the composition of waste is more important than the design of the treatment plant.

Wastewater treatment plant discharges can promote the development of antibiotic resistance in streams

Widespread use of antibiotics has led to pollution of waterways, potentially creating resistance among freshwater bacterial communities. A new study looked for antibiotic resistance genes in a river basin in Spain, revealing that wastewater discharges can promote the spread of antibiotic resistance in streams and small rivers.

Refurbished mobile phones: consumer perceptions and how to increase uptake

A recent survey of Dutch mobile phone owners has identified why some consumers buy refurbished mobile phones while others buy new ones. Some consumers perceived refurbished phones to be inferior, which was a major barrier to their purchase. The study’s authors make a number of recommendations to increase consumer uptake of refurbished mobile phones, including promoting the financial and environmental benefits and offering warranties.

Constructed wetlands for removing human pathogens: factors affecting water safety

Constructed wetlands can remove disease-causing bacteria from wastewater, but their performance is highly dependent on the systems they use, a new study shows. Researchers reviewed results from a wide range of studies on constructed wetlands and found that combining different approaches increased removal of bacteria. However, further research and improvement of wetland systems is required to produce water that is safe for reuse.

Environmental performance of construction and demolition waste management

The EU Waste Framework Directive aims to recycle or recover materially 70% of non-hazardous construction and demolition waste by 2020. This study evaluated the performance of the Finnish waste management system against this target. The results showed that the system generates environmental benefits and is profitable, but has not reached the 70% target. The researchers suggest ways the target could be met and recommend region-specific recycling objectives in the EU.

Modelling emissions of perfluorinated chemicals to the Danube River Basin

The emissions of two perfluoroalkyl acids (PFAAs) into the Danube River Basin have been estimated in a test of four different hypotheses regarding the factors affecting those emissions. The results were used to simulate water concentrations for comparison with measured data. The researchers found that incorporating wastewater treatment information and wealth distribution alongside population data can improve the accuracy of emissions estimates.

Active pharmaceutical ingredients in wastewater: who are the major contributors?

Active pharmaceutical ingredients (APIs) — responsible for the biological activity of drugs — have been widely found in the environment, yet the precise sources and relative importance of emissions via wastewater are not quite clear. This study assessed emissions from three health institutions in Germany — a hospital, a psychiatric hospital, and a nursing home — and found their contribution was low compared to that from households. However, more research is needed to understand the environmental effects of neurological drugs, emissions of which were in some cases relatively high.

Household food waste: an individual and national issue

The main factors affecting household food waste in the EU have been identified by an analysis of the 2013 Flash Eurobarometer survey (n.388). On an individual level, the main factors include age, gender, income and environmental attitudes. On the national level, the most significant factor is median disposable income. The authors suggest their results could help develop campaigns targeted at groups that generate the most household waste.

Extent of plastics in the Mediterranean Sea: a growing problem

The extent of marine litter in the Mediterranean Basin has been revealed by a new study. Researchers reviewed previous studies to show that the northwest Mediterranean Sea is a hotspot for plastic debris. They found that marine litter harmed 134 species in the Mediterranean Sea and call for more to be done to manage the growing problem of debris, especially plastics, littering the Sea.

Economic incentives for bringing e-waste into the circular economy

An economic analysis of 14 common categories of waste electric and electronic equipment (WEEE) has highlighted the economic value of bringing e-waste streams into the circular economy. The overall worth is calculated as €2.15 billion to European markets, with a potential rise to €3.67 billion as volumes increase.

Curate your waste: improving the efficiency of waste recovery

Sustainable urban waste management has progressed over recent decades, with recycling of waste becoming a routine activity across the EU. However, the increasing volume and complexity of waste poses ongoing challenges for policymakers and municipal administrators. New research suggests that a rethink around how household waste is sorted could lead to more resources being recovered from solid waste.

Microalgae sticks to microplastics and transports them to the seabed

Fragments of microplastics are readily incorporated into groups of microscopic algae, altering the rate at which the plastics move through seawater, a recent study has found. In laboratory tests, polystyrene microbeads, which usually sink to the bottom of seawater at a rate of 4 mm a day, sank at a rate of several hundreds of metres a day when part of microalgae aggregates.

Mining metals from heat-treated landfill proven to be economically viable

Mining metals from landfill sites can be economically viable, a recent project in the US has demonstrated. Approximately 34 352 tonnes of metals, conservatively valued at US$7.42 million (€6.67 million) were recovered from the 8 hectare ashfill site, according to researchers who analysed the project.

Collecting data to explore the ecological threat of nanomaterials

The overall ecological impact of 10 engineered nanomaterials has been modelled for the first time using toxicity data from multiple living species. These models will allow researchers to assess the effect nanomaterials may have on both ecosystems and people.

Compost made by worms from livestock manure yields benefits when applied to maize

Vermicomposting livestock manure with maize can increase agricultural benefit by 304%, shows a new study. The combination of increased crop yield and the additional earthworms produced as a result of the process led to a substantial increase in output compared to a traditional composting system.

Recycling wastewater would bring economic benefits to Tel Aviv Metropolitan Area

The economic viability of wastewater reuse projects could be better determined using methodology from a new study. The authors developed a five-step cost-benefit analysis framework to assess a planned wastewater reuse project within the catchment of the Yarqon River, in Tel Aviv Metropolitan Area, Israel. It was found that the scheme could have a net present value of $4.83 (€4.34) million per year. The authors highlight the relevance of identifying external as well as internal economic, social and environmental costs of such projects.

Floating litter in the Black Sea: abundance and composition

Reliable data regarding marine debris pollution in the Black Sea are lacking. This study provides the first account of the abundance and types of litter floating in the north-western part of the Sea. This information will help to develop effective solutions for marine litter in the region and therefore to achieve the EU objective of ‘Good Environmental Status’ by 2020.

Plastic found in stomachs of over 1 in 6 large pelagic fish sampled in Mediterranean Sea

Plastic pollution in the ocean is a growing problem. This study, which is the first to investigate the presence of plastic debris in large pelagic fish in the central Mediterranean Sea, found that over 18% of fish had ingested plastics.

Recovering and recycling phosphorus from incinerated waste

Phosphorus can be extracted in viable quantities from fly ash, a by-product created when municipal solid waste is burnt in incinerators, according to research conducted in Sweden. Sufficient phosphorus could be recovered from the country’s incinerators to meet 30% of the Swedish annual demand for mineral fertilisers, say the researchers.

Resource-efficient Portuguese packaging waste management system brings multiple benefits

A Portuguese waste management system for packaging has brought a range of environmental, economic and social benefits, according to a recent study. One of the scheme’s main achievements was that it avoided around 116 kilotons (kt) of CO2 equivalent emissions in a single year, equal to the emissions associated with the electricity use of 124 000 households. These emissions were largely circumvented because the system recovers large amounts of energy and materials from the waste packaging.

Exploring the Links Between Energy Efficiency and Resource Efficiency - June 2015

Energy efficiency is at the centre of EU policy for achieving a fundamental transformation of Europe’s energy systems by 2030. This Thematic Issue reveals the complexity of the issue of energy efficiency, its links with resource efficiency and the wide range of factors influencing it, from technology to social practices.

Managing wastewater treatment at the river-basin scale

The EU Water Framework Directive1 requires policymakers to consider the management of water e.g. in rivers, lakes and streams, at the scale of the river basin, but can wastewater treatment systems be managed at the same scale? To help policymakers answer this question, a team of Spanish researchers have created a method for assessing the integrated operation of wastewater treatment plants in a river basin. Uniquely, the method considers both local and global environmental factors and an economic assessment.

E-cigarette waste poses potential environmental risks

Disposable components of Electronic Nicotine Delivery Systems (ENDS), such as e-cigarettes and e-pens, could pose a potential environmental risk unless properly regulated, suggests new research. The study examined the levels of potentially toxic chemicals in disposable battery and 'cartomiser' ENDS components.

Polystyrene nanoparticles affect fish behaviour and metabolism

Fish fed polystyrene nanoparticles are less active and show changes to their brains and metabolism, according to a study by Swedish and Danish researchers. The findings suggest that nanoparticles in the environment could have a major impact on fish and aquatic ecosystems.

Microplastic pollution's effects explored for two key marine species: mussels and lugworms

Mussels exposed to high levels of microplastic pollution display signs of stress, new research has shown. However, levels of exposure were higher than found in the wild and no effect on the energy reserves of either mussels or lugworms was observed in the lab. tests. The researchers caution that longer experiments may be needed to reveal microplastics' full effects.

New biodegradable waste management plans proposed and evaluated

Researchers have designed and proposed a new organic waste management plan for Catalonia, Spain, and presented it in a recent study. They say that the plan would reduce a number of environmental impacts that arise from landfilling biodegradable waste, including natural resource depletion, acidification, and eutrophication.

Waste incinerator impacts monitored via milk and vegetable quality

Emissions from well-regulated household waste incinerators do not reduce the quality of vegetables and milk produced nearby, a Dutch study suggests. Researchers found that levels of certain contaminants were similar whether vegetables and milk came from the area surrounding three incinerators, or from elsewhere in the Netherlands. They say biomonitoring programmes could offer a way to increase the understanding of the real impacts of waste incineration and to improve communication between waste management companies and local communities.

Anti-depressant drug affects wild starlings’ feeding behaviour

Anti-depressant drugs can affect the behaviour of wild animals in ways which may reduce their survival, new research has shown. The researchers fed half a group of starlings fluoxetine (commonly produced as ‘Prozac’) at concentrations they would be likely to encounter in the wild, if they fed on invertebrates contained in the waste water at treatment plants. Those fed the anti-depressant showed reduced feeding rates compared to the rest of the group, possibly putting their survival at risk.

Eco-design for flat screens should ensure quick dismantling for maximum resource recovery

Flat screen televisions and computer monitors should be designed so they can be quickly dismantled for recycling, a recent study says. The researchers calculated that in order to ensure the recycling process remains economically viable, it must be possible to disassemble small screens in less than 11 minutes. Good design could lower the costs of recycling and enable near-total recovery of precious metals from the waste screens.

Plastic waste dominates seafloor litter in Mediterranean and Black Sea surveys

Researchers have trawled coastal areas of the Eastern Mediterranean and Black Sea for waste and found up to 1211 items of litter per km2. Plastic bags and bottles were some of the most commonly found items. They present the results in a recent study, which they say supports Marine Strategy Framework Directive (MSFD) implementation, as well as efforts to discourage plastic carrier bag use.

Carbon footprint of food waste not necessarily related to its weight

The carbon footprint of food waste should be taken into account alongside the the weight of food wasted, says a new study. The research examined three years of food waste data from six branches of a Swedish supermarket and calculated the waste’s carbon footprint. On the basis of their footprint, key products that could be targeted for waste reduction include beef mince, meatballs and cream, the results suggest.

Solar panel silicon recovery methods tested

A three-step chemical process could successfully recover high-purity silicon from recycled photovoltaic (PV) solar panels, new tests show. The scientists behind the research say that recycling not only helps the PV industry meet regulatory requirements, but also reduces pressure on demand for raw materials.