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Biodegradable Plastic Production fro...

Sah, Rakesh Kumar,

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Biodegradable Plastic Production from Lignocellulosic Biomass and CO2 /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Biodegradable Plastic Production from Lignocellulosic Biomass and CO2 // Rakesh Kumar Sah.
作者:	Sah, Rakesh Kumar,
面頁冊數:	1 electronic resource (68 pages)
附註:	Source: Masters Abstracts International, Volume: 86-11.
Contained By:	Masters Abstracts International86-11.
標題:	Chemistry. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31995621
ISBN:	9798315766339

Biodegradable Plastic Production from Lignocellulosic Biomass and CO2 /
Sah, Rakesh Kumar,

Biodegradable Plastic Production from Lignocellulosic Biomass and CO2 /Rakesh Kumar Sah. - 1 electronic resource (68 pages)

Source: Masters Abstracts International, Volume: 86-11.

Polyhydroxyalkanoates (PHAs) are biopolymers synthesized by numerous microorganisms as intracellular carbon storage materials. They are considered a promising and environmentally friendly alternative to petroleum-based plastics. Among the various feedstocks available, lignocellulosic biomass-such as agricultural by-products like corn stover and the organic fraction of municipal solid waste-stands out due to its renewable origin, low cost, and widespread availability, making it an excellent resource for sustainable PHA production. A critical challenge lies in the inherent recalcitrance of lignocellulose: its cellulose-hemicellulose matrix resists most direct microbial assimilation, requiring conversion into monomeric sugars (e.g., glucose, xylose) through sequential pretreatment and enzymatic hydrolysis. This study investigated alkali and acid pretreatment optimization for two biomass types, focusing on reagent selection, process variables (concentration, temperature, residence time, solids ratio) to enhance sugar recovery. Following pretreatment, industrial enzyme formulations facilitated polysaccharide depolymerization. The resulting sugar-rich hydrolysates served as the carbon source for the PHA-accumulating bacterium Pseudomonas putida KT2440, with assessments of substrate compatibility and polymer biosynthesis efficiency. In the subsequent stage of this study, attention is directed toward converting carbon dioxide released during fermentation into a viable input for PHA biosynthesis. Harnessing lignocellulosic biomass as a substrate for PHA generation offers a sustainable and economically feasible route to producing environmentally degradable plastic alternatives.

English

ISBN: 9798315766339Subjects--Topical Terms:

516420
Chemistry.
Subjects--Index Terms:

Polyhydroxyalkanoates

Biodegradable Plastic Production from Lignocellulosic Biomass and CO2 /
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520 $a Polyhydroxyalkanoates (PHAs) are biopolymers synthesized by numerous microorganisms as intracellular carbon storage materials. They are considered a promising and environmentally friendly alternative to petroleum-based plastics. Among the various feedstocks available, lignocellulosic biomass-such as agricultural by-products like corn stover and the organic fraction of municipal solid waste-stands out due to its renewable origin, low cost, and widespread availability, making it an excellent resource for sustainable PHA production. A critical challenge lies in the inherent recalcitrance of lignocellulose: its cellulose-hemicellulose matrix resists most direct microbial assimilation, requiring conversion into monomeric sugars (e.g., glucose, xylose) through sequential pretreatment and enzymatic hydrolysis. This study investigated alkali and acid pretreatment optimization for two biomass types, focusing on reagent selection, process variables (concentration, temperature, residence time, solids ratio) to enhance sugar recovery. Following pretreatment, industrial enzyme formulations facilitated polysaccharide depolymerization. The resulting sugar-rich hydrolysates served as the carbon source for the PHA-accumulating bacterium Pseudomonas putida KT2440, with assessments of substrate compatibility and polymer biosynthesis efficiency. In the subsequent stage of this study, attention is directed toward converting carbon dioxide released during fermentation into a viable input for PHA biosynthesis. Harnessing lignocellulosic biomass as a substrate for PHA generation offers a sustainable and economically feasible route to producing environmentally degradable plastic alternatives.
546 $a English
590 $a School code: 0509
650 4 $a Chemistry. $3 516420
650 4 $a Polymer chemistry. $3 3173488
650 4 $a Environmental science. $3 677245
650 4 $a Plastics. $3 649803
650 4 $a Organic chemistry. $3 523952
653 $a Polyhydroxyalkanoates
653 $a Lignocellulosic biomass
653 $a Biodegradable plastics
653 $a Plastic production
690 $a 0485
690 $a 0795
690 $a 0768
690 $a 0490
690 $a 0495
710 2 $a Southern Illinois University at Edwardsville. $b Chemistry. $e degree granting institution. $3 3829567
720 1 $a Dong, Jie $e degree supervisor.
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