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  "path": "/news/2026-03-alkaline-steel-cement-wastewater-capture.html",
  "publishedAt": "2026-03-30T11:40:05.000Z",
  "site": "https://techxplore.com",
  "tags": [
    "Engineering"
  ],
  "textContent": "Alkaline industrial wastewaters from steel or cement production are ideally suited to bind and sequester carbon dioxide (CO₂) chemically, safely, and for the long term. This is the result of a study conducted by the Helmholtz-Zentrum Hereon. Until now, this wastewater has been disposed of into rivers without using its CO2-sequestration capacity. In the future, it could neutralize millions of tons of CO₂—offering an attractive and implementable option to mitigate climate change. The study was recently published in the journal Environment, Science & Technology Letters.",
  "title": "Alkaline steel and cement wastewater could capture 30 million tons of CO₂ annually"
}