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An investigation of carbon dioxide sequestration through mineralization .

機(jī)譯：通過(guò)礦化隔離二氧化碳的研究。

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摘要

Global climate change, greenhouse gas (GHG) emission reduction, capture, and sequestration are currently very important topics that promise to be critical technologies for several decades as humankind strives to meet the needs of today in a sustainable manner with increased population growth, consumption of manufactured products, and modernization of industries world-wide. A multi-faceted approach needs to be developed that would include continuously increasing efficiency in fossil fuel combustion systems, replacement of fossil fuel systems with renewable energy sources or nuclear energy sources, preservation of existing forests, reforestation, algae farming, deep geologic injection, deep oceanic injection, and mineralization.1--6 Mineralization of CO 2 into carbonate compounds can be a final resting place unlike practically all other current proposals that may gradually result in re-emission of CO 2 gas through leakage pathways or natural processes of organic decay.;High-surface area calcium-rich by-product materials which include a source of cement-kiln dust, blast furnace slag, fly ash, lime-kiln dust, and recycled concrete fines were used to sequester CO2 from ambient atmospheric gas, trapped CO2 gas, and coal-combustion flue gas. A process is described that utilizes a foam generator with a foaming agent and various CO2 containing gases to produce a lightweight low-strength (or, adequate strength) material with readily available increased surface area from by-product materials and the available CO2 for rapid carbonation. The carbonated product is then crushed into a carbonate-rich aggregate suitable for a variety of construction uses. These aggregates were produced with appropriate densities for use as lightweight construction materials.;A theoretical basis for the proposed carbon dioxide sequestration processes, including calculations of the amount of CO2 converted into carbonate minerals, is provided along with results of laboratory strength and carbonation testing, and finally crushing and screening of the material into aggregates. These successfully produced new by-product based carbonated aggregates are also compared to published data for similar commercially produced aggregate materials.
機(jī)譯：當(dāng)前，全球氣候變化，溫室氣體（GHG）的減少，捕集和封存是非常重要的主題，這些承諾有望成為數(shù)十年的關(guān)鍵技術(shù)，因?yàn)槿祟悓⑴σ钥沙掷m(xù)的方式滿足當(dāng)今的需求，并增加人口增長(zhǎng)，消費(fèi)量。制成品，以及世界范圍的工業(yè)現(xiàn)代化。需要開(kāi)發(fā)一個(gè)多方面的方法，其中包括不斷提高化石燃料燃燒系統(tǒng)的效率，用可再生能源或核能資源替代化石燃料系統(tǒng)，保護(hù)現(xiàn)有森林，重新造林，藻類種植，深層地質(zhì)注入，深層1--6將CO 2礦化成碳酸鹽化合物可能是最終的安息之地，幾乎與目前所有其他提議不同，這些提議可能逐漸導(dǎo)致通過(guò)泄漏途徑或有機(jī)衰變的自然過(guò)程重新排放CO 2氣體。 。;使用高表面積的富含鈣的副產(chǎn)品材料，包括水泥窯粉塵，高爐礦渣，粉煤灰，石灰窯粉塵和再生混凝土細(xì)粉的來(lái)源，以從周?chē)髿庵薪亓舳趸?，并進(jìn)行捕集二氧化碳?xì)怏w和燃煤煙氣。描述了一種方法，該方法利用帶有發(fā)泡劑和各種含CO 2的氣體的泡沫發(fā)生器來(lái)產(chǎn)生輕質(zhì)的低強(qiáng)度（或足夠強(qiáng)度）的材料，該材料具有易于獲得的副產(chǎn)物材料表面積和可用于快速碳酸化的CO 2的表面積。 。然后將碳酸化產(chǎn)物壓碎成適合各種建筑用途的富含碳酸鹽的骨料。這些骨料以合適的密度生產(chǎn)，可用作輕質(zhì)建筑材料。；提供了擬議的二氧化碳封存過(guò)程的理論基礎(chǔ)，包括計(jì)算轉(zhuǎn)化為碳酸鹽礦物的二氧化碳的量，以及實(shí)驗(yàn)室強(qiáng)度和碳化試驗(yàn)的結(jié)果，最后將物料壓碎并篩選成團(tuán)料。這些成功生產(chǎn)的基于新副產(chǎn)品的碳酸骨料也與已發(fā)布的類似商業(yè)生產(chǎn)骨料的數(shù)據(jù)進(jìn)行了比較。

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  • 作者

    Ramme, Bruce W.;

  • 作者單位

    The University of Wisconsin - Milwaukee.;

  • 授予單位 The University of Wisconsin - Milwaukee.;
  • 學(xué)科 Engineering Civil.;Engineering Materials Science.;Engineering Environmental.
  • 學(xué)位 Ph.D.
  • 年度 2008
  • 頁(yè)碼 304 p.
  • 總頁(yè)數(shù) 304
  • 原文格式 PDF
  • 正文語(yǔ)種 eng
  • 中圖分類
  • 關(guān)鍵詞

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