Sustainable Chemical Processes
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Recent advances on biobutanol production
Sustainable Chemical Processes - Tập 2 - Trang 1-9 - 2014
Recent studies have shown that butanol is a potential gasoline replacement that can also be blended in significant quantities with conventional diesel fuel. However, biotechnological production of butanol has some challenges such as low butanol titer, high cost feedstocks and product inhibition. The present work reviewed the technical and economic feasibility of the main technologies available to ......
Nano Cu-catalyzed efficient and selective reduction of nitroarenes under combined microwave and ultrasound irradiation
Sustainable Chemical Processes - Tập 2 - Trang 1-6 - 2014
In situ preparation of copper nanoparticles from a copper acetate precursor and its application as an efficient catalyst for the selective reduction of aromatic nitro compounds with hydrazine hydrate under combined microwave and ultrasound irradiation were described in detail. The results reveal the synergetic effect of microwave and ultrasound on the synthesis of copper nanoparticles, and formati......
Biomolecular assembly strategies to develop potential artificial cellulosomes
Sustainable Chemical Processes - Tập 2 - Trang 1-5 - 2014
Cellulosic biomass is a sustainable source for fuels and value-added chemicals, and is available in large quantities. One of the key challenges in biomass processing is associated with the establishment of an efficient enzymatic degradation of plant cell wall. A multi-enzymatic complex, cellulosome, was identified as a highly efficient biocatalyst for the hydrolysis of cellulosic biomass in nature......
Tối ưu hóa sản xuất L-asparaginase bởi Serratia marcescens (NCIM 2919) dưới quá trình lên men rắn sử dụng bã dầu dừa Dịch bởi AI
Sustainable Chemical Processes - Tập 1 - Trang 1-8 - 2013
Nghiên cứu hiện tại tập trung vào việc sử dụng các sản phẩm phụ từ rác thải nông nghiệp được tạo ra từ nhà máy dầu để sản xuất enzyme L-asparaginase bằng cách sử dụng Serratia marcescens dưới điều kiện lên men rắn. Các phương pháp cổ điển và thống kê được áp dụng để tối ưu hóa các biến quá trình và kết quả được so sánh. Phương pháp cổ điển một yếu tố tại một thời điểm (OFAT) và phương pháp bề mặt ......
#L-asparaginase #Serratia marcescens #lên men rắn #bã dầu dừa #tối ưu hóa sản xuất
Microwave assisted chemical pretreatment of Miscanthus under different temperature regimes
Sustainable Chemical Processes - Tập 3 - Trang 1-13 - 2015
Miscanthus is a major bioenergy crop in Europe and a potential feedstock for second generation biofuels. The most efficient and realistic method to produce fermentable sugars from lignocellulosic biomass is by enzymatic hydrolysis, assisted by thermo-chemical pretreatment. Recently, microwave technology has drawn growing attention, because of its unique effects and perf......
The use of combination of zeolites to pursue integrated refined pyrolysis oil from kraft lignin
Sustainable Chemical Processes - - 2014
A mixture of Y and M type zeolites were applied to pyrolyze kraft softwood (SW) lignin with the objective of studying the combination effect of different types of zeolite on pyrolysis. The chemical structures of the subsequent pyrolysis oils were examined. Nuclear Magnetic Resonance (NMR) spectroscopy including 13C, 31P of phosphitylated bio-oils, Heteronuclear Single-Quantum Correlation (HSQC)-NM......
Tools and techniques for solvent selection: green solvent selection guides
Sustainable Chemical Processes - Tập 4 - Trang 1-24 - 2016
Driven by legislation and evolving attitudes towards environmental issues, establishing green solvents for extractions, separations, formulations and reaction chemistry has become an increasingly important area of research. Several general purpose solvent selection guides have now been published with the aim to reduce use of the most hazardous solvents. This review serves the purpose of explaining......
Ionic liquids as a tool for lignocellulosic biomass fractionation
Sustainable Chemical Processes - Tập 1 - Trang 1-31 - 2013
Lignocellulosic biomass composes a diversity of feedstock raw materials representing an abundant and renewable carbon source. In majority lignocellulose is constituted by carbohydrate macromolecules, namely cellulose and hemicellulose, and by lignin, a polyphenilpropanoid macromolecule. Between these biomacromolecules, there are several covalent and non-covalent interactions defining an intricate,......
Combi-protein coated microcrystals of lipases for production of biodiesel from oil from spent coffee grounds
Sustainable Chemical Processes - Tập 1 - Trang 1-9 - 2013
Replacing chemical catalysts with biocatalysts is a widely recognized goal of white biotechnology. For biocatalytic processes requiring low water containing media, enzymes for example commercial preparations of lipases, show low catalytic efficiencies. Some high activity preparations for addressing this concern have been described. Protein coated microcrystals (PCMC) constitute one such preparatio......
High yield lactic acid selective oxidation into acetic acid over a Mo-V-Nb mixed oxide catalyst
Sustainable Chemical Processes - Tập 3 - Trang 1-8 - 2015
In this paper, we report for the first time a one-pot reaction enabling total transformation of lactic acid to acetic acid over a Mo-V-Nb mixed oxide catalyst having an optimal atomic ratio 19:5:1. The mechanism of the reaction consists in two parallel ways leading to acetic acid: (i) oxi-dehydrogenation of lactic acid to pyruvic acid followed by decarboxylation and (ii) decarbonylation of lactic ......
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