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Chemicals from Biomass: Integrating Bioprocesses into by Debalina Sengupta

By Debalina Sengupta

Chemicals from Biomass: Integrating Bioprocesses into Chemical creation Complexes for Sustainable Development is helping engineers optimize the advance of latest chemical and polymer vegetation that use renewable assets to exchange the output of products and providers from latest crops. It additionally discusses the conversion of these current crops into amenities which are in line with renewable assets which can require nonrenewable source supplements.

Relying on huge studies of biomass as feedstock and the construction of chemical substances from biomass, this booklet identifies and illustrates the layout of recent chemical procedures (bioprocesses) that use renewable feedstock (biomass) as uncooked fabrics. The authors express how those new bioprocesses could be built-in into the prevailing plant in a chemical construction complicated to acquire the easiest mix of energy-efficient and environmentally applicable amenities. This provided method is an integral part of sustainable improvement, and those steps are necessary to reaching a sustainable chemical industry.

The authors review capability bioprocesses in line with a conceptual layout of biomass-based chemical construction, they usually use Aspen HYSYS® and Aspen ICARUS® to accomplish simulations and monetary reviews of those techniques. The booklet outlines specified approach designs created for seven bioprocesses that use biomass and carbon dioxide as feedstock to provide more than a few chemical substances and monomers. those contain fermentation, transesterification, anaerobic digestion, gasification, and algae oil construction. those method designs, and linked simulation codes, will be downloaded for amendment, as wanted. The technique offered during this e-book can be utilized to judge power potency, expense, sustainability, and environmental acceptability of crops and new items. in keeping with the result of that evaluation, the method will be utilized to different chemical complexes for brand new bioprocesses, decreased emissions, and effort mark downs.

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Extra info for Chemicals from Biomass: Integrating Bioprocesses into Chemical Production Complexes for Sustainable Development (Green Chemistry and Chemical Engineering)

Sample text

003 per day, was measured for the conversion of volatile solids to biogas from dairy farm waste. In a biofeedstock, the total solids are the sum of the suspended and dissolved solids, and the total solids are composed of volatile and fixed solids. In general, the residence time for an anaerobic digester varies with the amount of feed material, type of material, and the temperature. Resident time of 15–30 days is typical for mesophilic digestion, and residence time for thermophilic digestion is about one-half of that for mesophilic digestion.

2. Case I was a modification of the superstructure to study the integration of bioprocesses only in the existing base case. The carbon dioxide was not used for chemicals or algae oil production in this case. The impact of the addition of bioprocesses could be studied using this case. Case II in Chapter 7 was a parametric study of sustainable costs and credits given for carbon dioxide, with the present scenario of zero carbon dioxide cost and credit as a reference. , give probable costs for carbon dioxide.

Either batch or continuous digester operations can be used. In continuous operations, there is a constant production of biogas while batch operations can be considered simpler and the production of biogas varies. , 1981). Mixed cultures of mesophilic bacteria function best at 37°C–41°C and thermophilic cultures function best at 50°C–52°C for the production of biogas. Biogas also contains a small amount of hydrogen and a trace of hydrogen sulfide, and it is usually used to produce electricity. There are two by-products of anaerobic digestion: acidogenic digestate and methanogenic digestate.

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