Synthesis of CaO-based sorbents for CO(2) capture by a spray-drying technique

Environ Sci Technol. 2012 Oct 16;46(20):11267-72. doi: 10.1021/es301783b. Epub 2012 Oct 4.

Abstract

Highly effective and durable CO(2) sorbents were synthesized with different calcium and support precursors using a spray-drying technique. It was found that spray-drying could be a useful technique for producing sorbents with enhanced cyclic performance, especially when d-gluconic acids of calcium and magnesium were used. Seven sorbents were synthesized with five calcium precursors and three inert solid precursors, and the sorbent made from calcium d-gluconte monohydrate and magnesium d-gluconate hydrate with 75 wt % CaO content achieved a high CO(2) sorption capacity of 0.46 g of CO(2)/g of calcined sorbent at the 44th cycle of carbonation and calcination.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adsorption
  • Air Pollutants / analysis
  • Air Pollutants / chemistry*
  • Air Pollution / prevention & control
  • Calcium / chemistry*
  • Calcium Compounds / chemistry*
  • Carbon Dioxide / analysis
  • Carbon Dioxide / chemistry*
  • Carbonates / chemistry
  • Oxides / chemistry*

Substances

  • Air Pollutants
  • Calcium Compounds
  • Carbonates
  • Oxides
  • Carbon Dioxide
  • lime
  • Calcium