Acervo

Nine months after a new fee-based waste collection programme was introduced in the city of Kyoto, the volume of household garbage generated by residents had dropped by some 17 percent and the volume of recyclables was some 21 per cent lower compared to the previous year, according to a city …

A rede de varejo Target oferece aos consumidores uma mensagem incomum sobre seus vales-presente, em algumas lojas: os cartões plásticos, informa a loja, são biodegradáveis – os consumidores só precisam se lembrar de gastá-los antes de jogá-los no lixo. Não se trata de um simples truque de marketing. Plásticos feitos …

Green PC, the great little green blog on all things to do with personal computing, has come up with this superb list of action you can do both at home and at work to lower the impact of your IT. A New Year‘‘s action resolution. Natural Choices reports that the …

Biodegradable plastics have gotten cheaper and more reliable, but some still object to their ecological footprint, according to The Christian Science Monitor Paper, plastic… or biodegradable? Yes, get ready to add a third option at the grocery store checkout line as biodegradable plastics enter the mainstream consumer market. It is …

No Brasil , mais de 3 milhões de toneladas de garrafas PET são despejadas na natureza por ano, o equivalente a 30% da produção total no país. Além disso, as garrafas pet demoram mais 200 anos para se decompor, ao passo que plásticos à base de materiais biopolímeros se decompõem …

A US start-up company Novomer is developing biodegradable plastics made from carbon dioxide. Environmentalresearchweb reports that the company, which recently received US$6.6 m in venture capital funding, claims that its plastics can contain up to 50% of the material by weight. Carbon dioxide is very unreactive and chemists have in …

ADEMAR VARGAS DE FREITAS Jornalista Dois biólogos que fazem doutorado na UFRGS realizam pesquisa básica para a produção de plástico biodegradável a partir de bactérias que se alimentam de resíduos agro-industriais existentes no Brasil. O biólogo Diego Bonatto e a bióloga Heique Bogdawa esperam desenvolver uma tecnologia brasileira, aproveitando a …

Scientists in New York are reporting development of a new biodegradable "nanohybrid" plastic that can be engineered to decompose much faster than existing plastics used in everything from soft drink bottles to medical implants. Science Daily reports that the plastic is a modified form of polyhydroxybutyrate (PHB), a promising biodegradable …

Segundo os pesquisadores, além da utilização de bactérias, também se pode produzir bioplástico a partir da fermentação, utilizando levedura. Foram feitas, ainda, experiências com o milho, o algodão e outras plantas-modelo, como o tabaco e Arabidopsis thaliana, que é uma planta daninha. Mas, muito mais na parte experimental, nada industrial. …

The U. S. Environmental Protection Agency is promoting the recycling of certain petroleum secondary materials into fuel. This effort, which will revise the Resource Conservation and Recovery Act regulations, is expected to help petroleum refineries reduce waste and capture more energy from each barrel of oil by allowing for the …