The report, which addresses persistent claims that householders are often wasting their time recycling, calls for better recycling facilities but also an increase in incineration of waste, an option that is opposed by many environment groups.
It also backed up last week’s controversial report published by the Department for Environment Food and Rural Affairs warning that biopolymer plastics made from crops should be recycled rather than put into compost, despite being widely marketed as “biodegradable”.
Wrap, the government’s waste and packaging agency, said it had analysed 200 reports covering seven different materials: paper and cardboard, plastics, biopolymers, food, garden cuttings, wood and textiles. The experts then looked at the evidence for seven methods of disposal, including recycling, composting, incineration and landfill, measured by four different criteria: energy use, water use, other resource use, and greenhouse gas emissions.
In more than four out of five cases, recycling was the clear winner, said Keith James, Wrap’s environmental policy manager.
But there were “different messages” for different materials, said James.
“For biopolymers, I think the preferable option is recycling, which isn’t what people have commonly thought,” he said.
“For textiles, there’s not very many statistics, but what there is shows reuse is clearly optimal, followed by recycling and then energy recovery [incineration].
“For food and garden waste, anaerobic digestion looks preferable; then composting and incineration with energy recovery come out very similar.
“For plastics, we have got strong evidence this time that recycling is the better option, because recycling has improved.
“For wood, recycling looks preferable.
“For paper and cardboard, what the statistics throw out is the importance of quality: the higher the quality [paper and cardboard], the better it is to recycle, but as you go down to the lower end, energy recovery [incineration] may be preferable.”