Methane capture and storage allows double environmental returns, since it removes a harmful greenhouse gas from the atmosphere and it can then be used as a fuel that is cleaner than other fossil fuels. Materials that can absorb methane are attracting a great deal of interest because of the inherent danger of storage in gas cylinders. Now, research revealing the methane storage potential of activated coffee grounds suggests a carbon capture material with the additional environmental merits of recycling a waste product…..
http://nanotechweb.org/cws/article/tech/62419
