The introduction of the 5p charge for plastic shopping bags in 2015 caused a fantastic 84% drop in bags being handed out in UK supermarkets. A much welcomed and decisive step in the right direction. At the same time we have also seen the rise of biodegradable and compostable bags and packaging. But as with many new laws and inventions, there are often unforeseen consequences. Ireland’s tax on plastic shopping bags, and the plastic bag ban across some territories in Australia more recently, resulted in a significant increase in sales of heavier plastic waste bags for kitchen bins. Biodegradable bags are made of a blend of plastic and corn or potato starch and will decompose in water and in CO2 but still cause plastic pollution in the long run. Bioplastic crops needed for this type of bag, and for compostable packaging in general, compete for land with biofuels and food crops, causing big problems such as loss of rainforests in favour of agricultural land use. The dilemma continues when you consider the environmental impact of paper bags and cotton bags in terms of resource use, energy and greenhouse outcomes. According to a UK Environmental Agency report, a paper bag would need to be re-used at least four times and a cotton bag 173 times to have a lower environmental impact than a single-use plastic bag.
The simple solution is to avoid single use bags altogether and to have our own supply of cotton bags always at the ready. In addition to the usual cotton and hemp carrier bags, we can also have small fabric bags for bagging up fruit, veg, bread and other loose items in the shops. I made a variety of small bags one afternoon from fabric I had saved over time, including my sons’ first cot bedlinen. If you don’t sew, you can buy organic cotton drawstring bags from Etsy or a dozen other online shops. As for kitchen bin bags – since I decided to live without plastic bags altogether we had to be more rigorous about separating compost, cooked food and recyclables so that the kitchen bin can be emptied straight into the large bin outside without the use of a bag. My little shopping bags are precious to me now and I wouldn’t dream of throwing them away or using them as a bin bag. It’s just a small mind shift from ‘throw-away’ to ‘keepsake’ that puts the solution to the big problems into our own hands.
Read more about…
- Tesco phasing out 5p plastic bags in favour for bags for life: https://www.theguardian.com/environment/2017/aug/07/tesco-to-end-sales-of-5p-carrier-bags
- France plastic bag ban: http://www.france24.com/en/20160701-france-bans-plastic-bags-distributed-stores
- Australia plastic bag ban – some questions remain: https://theconversation.com/in-banning-plastic-bags-we-need-to-make-sure-were-not-creating-new-problems-81253
- UK Environment Agency study on life cycle of carrier bags, 2006: https://www.gov.uk/government/publications/life-cycle-assessment-of-supermarket-carrierbags-a-review-of-the-bags-available-in-2006