利用固定化生物吸附材與ZSM-5於生物發酵產物之吸附平衡探討

Adsorption Equilibrium Studies of Acetone, Butanol, and Ethanol in the Bio-Based Fermentation Broth onto Immobilized Potato Starch Sorbent and Zeolite Socony Mobil-5 (ZSM-5)

王迪娜(Dina-Wahyu Indriani)

指導教授 ： 鍾財王

中原大學/工學院/化學工程研究所/碩士(2012年)

https://doi.org/10.6840/cycu201200835

摘要

1 摘要
全球石油蘊藏量目前正以飛快的速度在減少中，主要是因為石化燃料的使用量與日俱增，同時產生了大量的廢氣排放到大氣中，造成了溫室效應。因此尋找一種全新的替代型能源就變的十分的重要，也是近來各國科學家所研究的重點之一。在各種替代型能源中，其中又以生質燃料最受到重視。生質丁醇在生質燃料中是很重要的議題之一，可經由發酵的方式得到。丁醇可用來製造丁二烯，並應用在合成橡膠產業，然而在發酵的過程中同時會產生丙酮(Acetone)、丁醇(Butanol)和乙醇(Ethanol)，也就是俗稱的ABE溶液。為了提高丁醇的純度，丙酮和乙醇勢必是要去除。
本篇研究主要是利用商業化高矽鋁(Si/Al)比的分子篩(Zeolite, ZSM-5)及自製固定化馬鈴薯澱粉吸附材，配合重力吸附平衡設備及動力吸附平衡系統來計算出ABE溶液中三種溶液分別之吸附行為，此結果有助於未來系統放大或工業化應用。此論文的重點是希望能建立一套單一步驟或是兩步驟式的吸附程序，將丁醇從ABE溶液中分離出來。
結果發現，顆粒大小及飽和蒸汽壓對於出口端濃度具有明顯的影響，從重力吸附平衡設備及氣相層析儀分別可得到ABE溶液在氣相及液相中的等溫吸附曲線，並利用Langmuir model 可求得其吸附常數及回歸值。這些數據對於未來工業化或是放大系統時，都是不可或缺的資料。

關鍵字 : 生質燃料、吸附、固定化馬鈴薯澱粉吸附材、ABE、ZSM-5

關鍵字

固定化馬鈴薯澱粉吸附材 ； 吸附 ； 生質燃料 ； ABE ； ZSM-5

並列摘要

Abstract
Diminishing petroleum reserves owing to the world’s rapidly and the increasing environmental problems resulting from the impact of using petroleum fuel emissions, the search for alternative fuel sources has gained much attention. The production of biofuels is currently one of the key strategies in developing a sustainable economy. Butanol is an important feedstock of chemical and fuel that can be produced by fermentation using renewable resources as substrates. The fermentation broth including acetone, butanol, and ethanol is called the ABE solution, butanol was used as one of raw material for the production of butadiene being a raw material for synthetic rubber production. Currently, butanol is considered as an alternative biofuel.
In this study, the high Si/Al ratio zeolites, the self-made silica immobilized potato starch sorbents and their mixtures will be conducted in our laboratory by using the gravimetric adsorption equilibrium apparatus and the dynamic adsorption system to evaluate the competitive adsorption behavior of 1-butanol with other compounds in the ABE solution. The results of this study can be applied to develop a high effectiveness industrial process of butanol recovery from ABE fermentation solution.
The objectives of this research is to propose an one-step or two-step adsorption process to separate butanol from ABE solution, developing the regression models and R2 value for the adsorption isotherm of butanol, acetone, and ethanol for futher study, to selected sorbents to adsorb 1-butanol, acetone, and ethanol vapor for gas-phase single-component adsorption using gravimetric adsorption equilibrium apparatus and liquid phase adsorption using gas chromatograph.
The selected sorbents will be used to adsorb 1-butanol, acetone, and ethanol vapor for gas-phase single-component adsorption equilibrium study and analysis by our gravimetric adsorption equilibrium apparatus. The isotherm data were obtained in this study as well as the development of regression models for the isotherm data.
The effects of particle size and saturated pressure on outlet concentration of packed column is significant, with increase of the velocity the roll-over phenomenon is more obvious. The Langmuir curves of the adsorption of each compound in ABE solution by the selected sorbent in a gas phase by using gravitimetric adsorption apparatus and liquid phase by using gas chromatograph will be obtained in this study and the effect of each operating parameter on the product concentration of 1-butanol will be discussed. It is important for the design of an industrial butanol recovery adsorption system from ABE solution.

Keywords: Biofuel, ABE, Adsorption, Immobilized Potato Starch Sorbent, ZSM-5.

並列關鍵字

ABE ； ZSM-5 ； Biofuel ； Immobilized Potato Starch Sorbent ； Adsorption

參考文獻

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