7/31/2019 Summary Rez.5.

1/2

Summary

The need of a lasting method to generate fuel and chemical products for the

future, led in the past years to an important usage of the biomass as raw material.

The present paper tries to present a new alternative of fuel, that could replace the

usage of fossil fuel in the close future. The bioethanol of second generation is seen

nowadays as the best alternative of replacing fossil fuels.

The first chapter presents the current state of the fuels. There are also presented in

comparison the three types of fuel known at present.

The next chapter shows the perspective for the development of the biofuel production until the year 2050, in Europe and also in the entire world. Related to this

topic there are also presented some issues from the European Legislation.

Chapter 3 offers information about the possibilities of using biofuels and especially

the possibilities of using the bioethanol as fuel used in transport as mixed with gasoline,

being illustrated the specific properties for this mixture called gasohol.

The next chapter deals with the study of the quality index of bio-ethanol, being

presented its properties generally as against to the gas properties. There are also

presented the two existing types of bioethanol (anhydrous and hydrous).

The chapter Methods of obtaining bioethanol describes the main three methods

of obtaining the bioethanol- from feedstocks containing sugar, from amidone based

feedstocks, and also from lignocellulose based raw material, a method that is

presented at large in the next chapter.

In the former part of the paper there were broadly presented the biofuels obtained from

renewable feedstocks. The latter part of the paper illustrates a clearer picture of the

bioethanol of second generation .

Chapter 6 is more complex, being structured in 6 important subchapters. The first

part deals with the process of obtaining bioethanol from lignocellulose materials,

being described at large all the stages of the process.

http://en.wikipedia.org/wiki/Feedstockhttp://en.wikipedia.org/wiki/Feedstock

7/31/2019 Summary Rez.5.

2/2

Subchapter 2 describes the technological process of obtaining the bio-ethanol from

remains of wood of strong essence, being presented all the chemical reactionsthat take place at each stage of the process.

Furthermore, based on the process previously described, there will be

presented the material balance for each stage and then there will be made a

total mass balance. Also,there will be presented the specific costs and the

specific production of the technological process.

This part also contains a stage of sizing the key equipment of the technological

process. This process was applied to the fermentation tank, the equipment

where the main reactions take place, as well as to the rectifying column used toseparation the mixture water- bioethanol.

Like any other technological process, the presented process implies issues related

to the environment protection; for these reasons the last subchapter of this paper presents

alternatives for separation of the secondary products released and their usage further on

in the chemical industry.