Wyniki wyszukiwania - BazTech

1

Ionic liquids as alternative solvents for energy conservation and environmental engineering

Padinhattath Sachind Prabha, Chenthamara Baiju, Gardas Ramesh L.

Acta Innovations

|

2021

|

no. 38

62--79

EN

Because of industrialization and modernization, phenomenal changes have taken place in almost all spheres of life. Consequently, the consumption of energy resources and the cases of environmental hazards have risen to an unprecedentedly high level. A development model with due consideration to nature and an efficient utilization of energy sources has become the need of the hour, in order to ensure a sustainable balance between the environmental and technological needs. Recent studies have identified the suitability of ionic liquids (ILs), often labeled as ‘green solvents’, in the efficient utilization of energy resources and activities such as bio-extraction, pollution control, CO2 capture, waste management etc. in an environmentally friendly manner. The advent of magnetic ionic liquids (MILs) and deep eutectic solvents (DESs) have opened possibilities for a circular economic approach in this filed. This review intends to analyze the environmental and energy wise consumption of a wide variety of ionic liquids and their potential towards future.

2

Biomass delignification with green solvents towards lignin valorisation: ionic liquids vs deep eutectic solvents

da Costa Lopes André M.

Acta Innovations

|

2021

|

no. 40

64--78

EN

The use of renewable resources as feedstocks to ensure the production of goods and commodities for society has been explored in the last decades to switch off the overexploited and pollutant fossil-based economy. Today there is a strong movement to set bioeconomy as priority, but there are still challenges and technical limitations that must be overcome in the first place, particularly on biomass fractionation. For biomass to be an appellative raw material, an efficient and sustainable separation of its major components must be achieved. On the other hand, the technology development for biomass valorisation must follow green chemistry practices towards eco-friendly processes, otherwise no environmental leverage over traditional petrochemical technologies will be acquired. In this context, the application of green solvents, such as ionic liquids (ILs) and deep eutectic solvents (DES), in biomass fractionation is envisaged as promising technology that encompasses not only efficiency and environmental benefits, but also selectivity, which is a crucial demand to undertake cascade processes at biorefinery level. In particular, this article briefly discusses the disruptive achievements upon the application of ILs and DES in biomass delignification step towards an effective and selective separation of lignin from polysaccharides. The different physicochemical properties of these solvents, their interactions with lignin and their delignification capacity will be scrutinized, while some highlights will be given to the important characteristics of isolated lignin fractions for further valorisation. The advantages and disadvantages between ILs and DES in biomass delignification will be contrasted as well along the article.

3

Zielone rozpuszczalniki w analityce chemicznej

Bystrzanowska Marta, Tobiszewski Marek

Analityka : nauka i praktyka

|

2020

|

nr 2

40--45

PL

Zgodnie z zasadami zielonej chemii dąży się do eliminacji bądź minimalizacji zastosowania rozpuszczalników, a także zastąpienia ich rozwiązaniami alternatywnymi – zielonymi rozpuszczalnikami.