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There is also much debate about the total carbon, fossil fuel and water usage in manufacturing biodegradable bioplastics from natural materials and whether they are a negative impact to human food supply. To make 1 kg (2.2 lb) of polylactic acid, the most common commercially available compostable plastic, 2.65 kg (5.8 lb) of corn is required. [57]
For lack of nitrogen and phosphorus they produce a kilogram of PHA per three kilograms of sugar. The simplest and most commonly occurring form of PHA is the fermentative production of poly-beta-hydroxybutyrate [poly(3-hydroxybutyrate), P(3HB)], which consists of 1000 to 30000 hydroxy fatty acid monomers.
In 1938, a research director for Thann & Mulhouse, Joseph Zeltner, first conceived the idea of Nylon 11, which was suggested in the works of Wallace Carothers. [3] Thann & Mulhouse had already been involved in processing castor oil for 10-undecenoic-acid, which would eventually be converted into the first amount of 11-aminoundecanoic acid in 1940 with the help of coworkers Michel Genas and ...
Bioplastics called drop-in bioplastics are ... 2.15 tonnes of CO 2 per ... 2009) [90] A decline in bioplastic development is seen due to the cheap oil prices, ...
Polylactic acid, also known as poly (lactic acid) or polylactide (PLA), is a thermoplastic polyester (or polyhydroxyalkanoate) with backbone formula (C3H4O2)n or [–C (CH3)HC (=O)O–]n, formally obtained by condensation of lactic acid C (CH3) (OH)HCOOH with loss of water (hence its name).
Graphite flakes can cost around US$0.9/kg carbon. [20] Price of synthetic industrial diamond for grinding and polishing can range from 1200 to 13 300 USD/kg, while cost per weight of large synthetic diamonds for industrial applications can be on the order of million dollars per kilogram. [21] 7: N: Nitrogen: 0.0012506: 19 (5.263 × 10 17 kg) 0. ...
Aluminum can prices vary by region and are based on weight. The average recycling value per pound of cans in the U.S. is currently $0.56. How many aluminum cans are in a pound?
For the US to meet its current output of plastics production with BPs, it would require 1.62 square meters per kilogram produced[25]. That sounds far too low to be true. Maybe it should read "1.62 square kilometers per kilogram produced"? Also it seems that a unit of time is missing -> "per kilogram produced per year"? Can anyone with access to ...