ENCHANCED REDUCTION OF GARBAGE BAG CONTENTS

摘要

To aid in the spontaneous opening of closed garbage bags deposited in landfills, a biodegradable bag tie made from plant sources is described. The preparation of the tie material includes hydrolysis with an enzymatic aqueous solution to make the strip amenable to rapid digestion by microorganisms indigenous to landfill environments. The strips may then be tied by knotting around the open end of the polyethylene garbage bag or by joining the two ends of the strip with double-sided adhesive tape. In this way, the closed tie is digested soon after deposition of the bag in a landfill, thereby also exposing its contents to local aerobic bacteria and fungi.

主权项

1. A novel process for preparing special biodegradable bag ties comprising:
a) collecting natural plant products for said biodegradable refuse bag ties comprising fronds, husks, corn leaves, lemon grass leaves, palm leaves, cabbage leaves, rice leaves, coconut leaves, lettuce leaves, artichoke leaves, aloe leaves, cactus leaves, or bamboo leaves, and cutting them into strips 1-3 inches wide by 7-14 inches long to provide plant strips; b) pretreating said plant strips by incubating them in a dilute aqueous solution comprising cellulase, cellobiohydrolase, endoglucanase, xylanase, pectinase, cellobiase, or hemicellulase at 37° C. for 5-50 minutes to provide pretreated plant strips; c) impregnating said pretreated plant strips with inorganic peroxide by lightly spraying a 0.01-0.1% aqueous solution comprising one of strontium peroxide, calcium peroxide, magnesium peroxide, barium peroxide (with sodium chlorate), hydrogen peroxide (combined with an ester of pyrocarbonic acid or an N-vinyl heterocylic), lithium peroxide, sodium peroxide, sodium peroxyborate monohydrate, or sodium carbonate peroxyhydrate, and air-drying for 12 hours at 23-27° C.; d) applying a 2-3 inch long strip of double-side adhesive tape to one end of said pretreated strips and retaining an inert tape backing.