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Fluorine-Intercalated Biochar for th...

Sutton, Khiry.

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Fluorine-Intercalated Biochar for the Application of Ionizing Radiation Protection and Carbon Capture.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Fluorine-Intercalated Biochar for the Application of Ionizing Radiation Protection and Carbon Capture./
作者:	Sutton, Khiry.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	101 p.
附註:	Source: Dissertations Abstracts International, Volume: 82-12, Section: B.
Contained By:	Dissertations Abstracts International82-12B.
標題:	Bioengineering. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28413226
ISBN:	9798516942747

Fluorine-Intercalated Biochar for the Application of Ionizing Radiation Protection and Carbon Capture.
Sutton, Khiry.

Fluorine-Intercalated Biochar for the Application of Ionizing Radiation Protection and Carbon Capture. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 101 p.

Source: Dissertations Abstracts International, Volume: 82-12, Section: B.

Thesis (Ph.D.)--North Carolina Agricultural and Technical State University, 2021.

This item must not be sold to any third party vendors.

Objective #1: Biochar is a sustainable, carbon rich material that can be utilized for several applications including ionizing radiation protection. In this work, a high electron dense fluorine-doped biochar-based carbon material was developed by treating biochar with fluorine-based catalysts. Its application as a composite additive created several radiation protection materials was explored and compared to industry standards. It was found that the biochar composites were able to compete with the industry standards in both alpha radiation and gamma radiation, showing no significant difference between the materials and industry standards (p-value >.99), effectively performing as well as the industry standards. Lead was the most effective material at blocking beta radiation due to its high area density (about 1200 mg/cm2 ), but the biochar composites were able to reduce beta radiation by over 80 % in some composites, performing exceptionally well relative to their lower area densities (less than 200 mg/cm2 ). In general, the results indicated that the newly developed biochar composite materials have excellent shielding performance and can be used as an effective replacement for the industry standards ranging from lead to concrete.Objective #2: Biochar is emerging as a versatile eco-friendly material, that is known for its bioremediation abilities. By activating and applying pyrrolic and fluoric functional groups to the surface, the biochar becomes a low-cost carbon dioxide adsorbent. The activated biochar proved capable of absorbing over 12 wt.%, in a 1-hour time period, compared to 7.5 wt.% by conventional activated carbon. The activated biochar readily adsorbed and desorbed carbon dioxide at 50 degrees and 150 degrees Celsius respectfully. The activated biochar showed a slight decrease about 2 wt. % per continuous cycle, reducing to as low as 3.71 wt. % on the sixth cycle. To display the regenerablility of the activated biochar, the sample was allowed to reach equilibrium overnight and was able to capture about 11 wt. % carbon dioxide. Higher temperatures showed a reduction in the carbon dioxide capturing potential reducing the potential to 8.93 wt. % and 4.37 wt. % at 350 and 450 degrees Celsius. Longer residence times improved the carbon capturing potential of the activated biochar reaching as high as 15 wt. % with a residence time of 4 hours. Activated biochar showed the potential to become an industry leader in carbon dioxide adsorption and help improve the global landscape.

ISBN: 9798516942747Subjects--Topical Terms:

657580
Bioengineering.
Subjects--Index Terms:

Biochar

Fluorine-Intercalated Biochar for the Application of Ionizing Radiation Protection and Carbon Capture.
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245 1 0 $a Fluorine-Intercalated Biochar for the Application of Ionizing Radiation Protection and Carbon Capture.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 101 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-12, Section: B.
500 $a Advisor: Shahbazi, Abolghasem;Xiu, Shuangning.
502 $a Thesis (Ph.D.)--North Carolina Agricultural and Technical State University, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a Objective #1: Biochar is a sustainable, carbon rich material that can be utilized for several applications including ionizing radiation protection. In this work, a high electron dense fluorine-doped biochar-based carbon material was developed by treating biochar with fluorine-based catalysts. Its application as a composite additive created several radiation protection materials was explored and compared to industry standards. It was found that the biochar composites were able to compete with the industry standards in both alpha radiation and gamma radiation, showing no significant difference between the materials and industry standards (p-value >.99), effectively performing as well as the industry standards. Lead was the most effective material at blocking beta radiation due to its high area density (about 1200 mg/cm2 ), but the biochar composites were able to reduce beta radiation by over 80 % in some composites, performing exceptionally well relative to their lower area densities (less than 200 mg/cm2 ). In general, the results indicated that the newly developed biochar composite materials have excellent shielding performance and can be used as an effective replacement for the industry standards ranging from lead to concrete.Objective #2: Biochar is emerging as a versatile eco-friendly material, that is known for its bioremediation abilities. By activating and applying pyrrolic and fluoric functional groups to the surface, the biochar becomes a low-cost carbon dioxide adsorbent. The activated biochar proved capable of absorbing over 12 wt.%, in a 1-hour time period, compared to 7.5 wt.% by conventional activated carbon. The activated biochar readily adsorbed and desorbed carbon dioxide at 50 degrees and 150 degrees Celsius respectfully. The activated biochar showed a slight decrease about 2 wt. % per continuous cycle, reducing to as low as 3.71 wt. % on the sixth cycle. To display the regenerablility of the activated biochar, the sample was allowed to reach equilibrium overnight and was able to capture about 11 wt. % carbon dioxide. Higher temperatures showed a reduction in the carbon dioxide capturing potential reducing the potential to 8.93 wt. % and 4.37 wt. % at 350 and 450 degrees Celsius. Longer residence times improved the carbon capturing potential of the activated biochar reaching as high as 15 wt. % with a residence time of 4 hours. Activated biochar showed the potential to become an industry leader in carbon dioxide adsorption and help improve the global landscape.
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650 4 $a Sustainability. $3 1029978
650 4 $a Environmental science. $3 677245
653 $a Biochar
653 $a Capture
653 $a Carbon
653 $a Engineering
653 $a Radiation
653 $a Sustainability
690 $a 0202
690 $a 0640
690 $a 0768
710 2 $a North Carolina Agricultural and Technical State University. $b Applied Science and Technology. $3 3560282
773 0 $t Dissertations Abstracts International $g 82-12B.
790 $a 1544
791 $a Ph.D.
792 $a 2021
793 $a English
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