語系:
繁體中文
English
說明(常見問題)
回圖書館首頁
手機版館藏查詢
登入
回首頁
切換:
標籤
|
MARC模式
|
ISBD
FindBook
Google Book
Amazon
博客來
Optimizing Cyanobacterial Cultivation for Wastewater Nutrient Conversion.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Optimizing Cyanobacterial Cultivation for Wastewater Nutrient Conversion./
作者:
Hasan, Rifat.
面頁冊數:
1 online resource (223 pages)
附註:
Source: Dissertations Abstracts International, Volume: 85-01, Section: B.
Contained By:
Dissertations Abstracts International85-01B.
標題:
Aquaculture. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30516479click for full text (PQDT)
ISBN:
9798379871963
Optimizing Cyanobacterial Cultivation for Wastewater Nutrient Conversion.
Hasan, Rifat.
Optimizing Cyanobacterial Cultivation for Wastewater Nutrient Conversion.
- 1 online resource (223 pages)
Source: Dissertations Abstracts International, Volume: 85-01, Section: B.
Thesis (Ph.D.)--North Carolina State University, 2023.
Includes bibliographical references
Sustainability in livestock and aquaculture wastewater treatment is essential as these sectors continue to grow and the need for alternative treatments is a pressing concern. This research investigates the potential of the cyanobacterial species S. elongatus UTEX 2973 as an alternative sustainable wastewater treatment to 1) remove inorganic nutrients such as ammonia, nitrate, and phosphate from a combination of swine and fish wastewater while simultaneously accumulating carbohydrate during bioremediation, 2) investigate the phosphate and metal removal by abiotic precipitation and S. elongatus assimilation, and 3) predict growth and nutrient removal using a genome-scale model of S. elongatusUTEX 2973 and compare with experimental findings.The first objective was accomplished by selecting a wastewater mixture from three different mixing ratios (25:75, 50:50, and 75:25) of sturgeon and swine wastewater that supports optimal growth and carbohydrate accumulation in S. elongatus biomass. The combination of 50%-50% sturgeon-swine wastewater was selected for further comparison with BG11 synthetic growth media. A higher growth rate was achieved in synthetic growth media, whereas higher carbohydrate accumulation was observed in mixed wastewater. The nutrient removal efficiencies of S. elongatusin the mixed wastewater were 97.98% for ammonia, 93.39% for nitrate-nitrite, and 67.15% for orthophosphate.Significant phosphate removal by abiotic precipitation was observed due to the high pH (~ 9) of wastewater, which led to the second objective, in which both cyanobacterial and abiotic phosphate removal were studied. It was observed that a total of 96.81% phosphate was removed, of which 80.12% occurred by precipitation and 16.69% by S. elongatusassimilation. Within the first week of the two-week experiment ~ 100% precipitation took place.The final objective was accomplished by performing flux balance analysis (FBA) of a genome-scale model of S. elongatus UTEX 2973 with varying environmental parameters such as carbon dioxide (CO2), ammonia, nitrate, and phosphate to optimize either biomass production or glycogen accumulation (major source of carbohydrates in S. elongatus. No accumulation of glycogen was predicted below CO2 thresholds when examined as a function of inorganic nutrients (ammonia, nitrate, and phosphate), below which no accumulation was predicted. Dynamic flux balance analysis (DFBA) was performed using kinetic parameters for nitrate uptake from literature for another cyanobacterial species, Synechocystis sp. PCC6803. The nutrient uptake rates found experimentally did not fit Michaelis-Menten kinetics due to the complexity of wastewater components. Hence, a regression analysis was performed, and a complete second-order polynomial exhibited a good fit (R2=0.99) with experimentally observed nutrient uptake.The findings of this research showed that S. elongatus could bioremediate mixed wastewater by successfully removing inorganic nutrients and accumulating a significant amount of carbohydrates (70-75% of dry cell mass) during the bioremediation process. This particular species has been minimally investigated before for its ability to transform wastewater nutrients into high-value carbohydrate-enriched biomass. The outcomes of this study can support the development of an S. elongatusbiorefinery approach for bioremediation and manufacturing value-added products.
Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023
Mode of access: World Wide Web
ISBN: 9798379871963Subjects--Topical Terms:
545878
Aquaculture.
Index Terms--Genre/Form:
542853
Electronic books.
Optimizing Cyanobacterial Cultivation for Wastewater Nutrient Conversion.
LDR
:04690nmm a2200349K 4500
001
2359453
005
20230917193954.5
006
m o d
007
cr mn ---uuuuu
008
241011s2023 xx obm 000 0 eng d
020
$a
9798379871963
035
$a
(MiAaPQ)AAI30516479
035
$a
(MiAaPQ)NCState_Univ18402040898
035
$a
AAI30516479
040
$a
MiAaPQ
$b
eng
$c
MiAaPQ
$d
NTU
100
1
$a
Hasan, Rifat.
$3
3700056
245
1 0
$a
Optimizing Cyanobacterial Cultivation for Wastewater Nutrient Conversion.
264
0
$c
2023
300
$a
1 online resource (223 pages)
336
$a
text
$b
txt
$2
rdacontent
337
$a
computer
$b
c
$2
rdamedia
338
$a
online resource
$b
cr
$2
rdacarrier
500
$a
Source: Dissertations Abstracts International, Volume: 85-01, Section: B.
500
$a
Advisor: Beck, Ashley; Hall, Steven.
502
$a
Thesis (Ph.D.)--North Carolina State University, 2023.
504
$a
Includes bibliographical references
520
$a
Sustainability in livestock and aquaculture wastewater treatment is essential as these sectors continue to grow and the need for alternative treatments is a pressing concern. This research investigates the potential of the cyanobacterial species S. elongatus UTEX 2973 as an alternative sustainable wastewater treatment to 1) remove inorganic nutrients such as ammonia, nitrate, and phosphate from a combination of swine and fish wastewater while simultaneously accumulating carbohydrate during bioremediation, 2) investigate the phosphate and metal removal by abiotic precipitation and S. elongatus assimilation, and 3) predict growth and nutrient removal using a genome-scale model of S. elongatusUTEX 2973 and compare with experimental findings.The first objective was accomplished by selecting a wastewater mixture from three different mixing ratios (25:75, 50:50, and 75:25) of sturgeon and swine wastewater that supports optimal growth and carbohydrate accumulation in S. elongatus biomass. The combination of 50%-50% sturgeon-swine wastewater was selected for further comparison with BG11 synthetic growth media. A higher growth rate was achieved in synthetic growth media, whereas higher carbohydrate accumulation was observed in mixed wastewater. The nutrient removal efficiencies of S. elongatusin the mixed wastewater were 97.98% for ammonia, 93.39% for nitrate-nitrite, and 67.15% for orthophosphate.Significant phosphate removal by abiotic precipitation was observed due to the high pH (~ 9) of wastewater, which led to the second objective, in which both cyanobacterial and abiotic phosphate removal were studied. It was observed that a total of 96.81% phosphate was removed, of which 80.12% occurred by precipitation and 16.69% by S. elongatusassimilation. Within the first week of the two-week experiment ~ 100% precipitation took place.The final objective was accomplished by performing flux balance analysis (FBA) of a genome-scale model of S. elongatus UTEX 2973 with varying environmental parameters such as carbon dioxide (CO2), ammonia, nitrate, and phosphate to optimize either biomass production or glycogen accumulation (major source of carbohydrates in S. elongatus. No accumulation of glycogen was predicted below CO2 thresholds when examined as a function of inorganic nutrients (ammonia, nitrate, and phosphate), below which no accumulation was predicted. Dynamic flux balance analysis (DFBA) was performed using kinetic parameters for nitrate uptake from literature for another cyanobacterial species, Synechocystis sp. PCC6803. The nutrient uptake rates found experimentally did not fit Michaelis-Menten kinetics due to the complexity of wastewater components. Hence, a regression analysis was performed, and a complete second-order polynomial exhibited a good fit (R2=0.99) with experimentally observed nutrient uptake.The findings of this research showed that S. elongatus could bioremediate mixed wastewater by successfully removing inorganic nutrients and accumulating a significant amount of carbohydrates (70-75% of dry cell mass) during the bioremediation process. This particular species has been minimally investigated before for its ability to transform wastewater nutrients into high-value carbohydrate-enriched biomass. The outcomes of this study can support the development of an S. elongatusbiorefinery approach for bioremediation and manufacturing value-added products.
533
$a
Electronic reproduction.
$b
Ann Arbor, Mich. :
$c
ProQuest,
$d
2023
538
$a
Mode of access: World Wide Web
650
4
$a
Aquaculture.
$3
545878
650
4
$a
Agriculture.
$3
518588
650
4
$a
Nitrates.
$3
914879
650
4
$a
Carbon dioxide.
$3
587886
650
4
$a
Aquatic sciences.
$3
3174300
650
4
$a
Biological oceanography.
$3
2122748
655
7
$a
Electronic books.
$2
lcsh
$3
542853
690
$a
0473
690
$a
0792
690
$a
0416
710
2
$a
ProQuest Information and Learning Co.
$3
783688
710
2
$a
North Carolina State University.
$3
1018772
773
0
$t
Dissertations Abstracts International
$g
85-01B.
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30516479
$z
click for full text (PQDT)
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
W9481809
電子資源
11.線上閱覽_V
電子書
EB
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入