Patent ID: 7753618
Filing Date: 2010-07-13
Classification: B01D,C01B,C01F,C01P,C02F,C04B,Y02C,Y02P,Y02W,Y10T

Abstract:
1. A synthetic aggregate comprising a CO 2 -sequestering component comprising one or more carbonate compounds which, when the aggregate is subjected to a protocol for measuring carbon isotopic fractionation value (δ 13 C) consisting essentially of: (i) digestion of the aggregate in 2M HClO (ii) passing the gas through a gas dryer to produce a dried gas; (iii) analyzing the dried gas using mass spectrometry to determine a ratio of the (iv) comparing the ratio of (v) determining a value for carbon isotopic fractionation, expressed as ‰, from the comparison of (iv); the aggregate is characterized by having a δ 13 C value less than −10‰, reflective of a fossil fuel origin for the carbon, and wherein the aggregate comprises at least 80% w/w of one or more carbonate compounds and has a hardness of at least 3 on the Mohs hardness scale, and further wherein the aggregate has an average particle size of 0.05 in. or greater.