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<p>Carbon dioxide removal technologies are urgently needed to stay within the 2 °C warming limit. This study evaluated Gran Canaria lapilli and a commercially available lava basalt as feedstocks for bio-weathering in flow-through columns inoculated with <i>Aureobasidium pullulans</i>, <i>Suillus variegatus</i>, <i>Bacillus subtilis</i>, and <i>Cupriavidus metallidurans</i>. Weathering rates for biotic lapilli (2.92 ± 0.28 × 10<sup>−12</sup> mol m<sup>−2</sup> s<sup>−1</sup>) and lava basalt (2.17 ± 0.15 × 10<sup>−12</sup> mol m<sup>−2</sup> s<sup>−1</sup>) are statistically significantly greater than the abiotic controls (lapilli = 1.08 ± 0.01 × 10<sup>−12</sup>, lava basalt = 0.98 ± 0.02 × 10<sup>−12</sup> mol m<sup>−2</sup> s<sup>−1</sup>), with inoculation explaining most of the variance. While lapilli had faster weathering rates and greater phospholipid fatty acid biomasses, lava basalt sequestered more carbon: 1.38 and 0.61 mmol C (biotic and abiotic) compared to 0.56 and −0.25 mmol C for lapilli. Both materials show promise for CDR in bio-weathering systems.</p>

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Microbial dissolution of Gran Canaria lapilli in small-scale flow through columns: carbon dioxide removal potential

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月26日

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  • Thomas Corbett,
  • Elisabeth Odelius,
  • Tora Uebel,
  • Tove Jonsson,
  • Abhijeet Singh,
  • Sara Vicca,
  • Mathilde Hagens,
  • Tetyana Budnyak,
  • Oleg Tkachenko,
  • Reinaldy Poetra,
  • Jens Hartmann,
  • Ivan A. Janssens,
  • Harun Niron,
  • Michiel Van Tendeloo,
  • Siegfried E. Vlaeminck,
  • Anna Neubeck

摘要

Carbon dioxide removal technologies are urgently needed to stay within the 2 °C warming limit. This study evaluated Gran Canaria lapilli and a commercially available lava basalt as feedstocks for bio-weathering in flow-through columns inoculated with Aureobasidium pullulans, Suillus variegatus, Bacillus subtilis, and Cupriavidus metallidurans. Weathering rates for biotic lapilli (2.92 ± 0.28 × 10−12 mol m−2 s−1) and lava basalt (2.17 ± 0.15 × 10−12 mol m−2 s−1) are statistically significantly greater than the abiotic controls (lapilli = 1.08 ± 0.01 × 10−12, lava basalt = 0.98 ± 0.02 × 10−12 mol m−2 s−1), with inoculation explaining most of the variance. While lapilli had faster weathering rates and greater phospholipid fatty acid biomasses, lava basalt sequestered more carbon: 1.38 and 0.61 mmol C (biotic and abiotic) compared to 0.56 and −0.25 mmol C for lapilli. Both materials show promise for CDR in bio-weathering systems.