In parallel with this increase, concern is growing too, as far as these products must be ecological, non-toxic, cheap and, in addition, effective. A research team of the University of Granada is working on the design of biodegradable detergents respectful with the environment, which adapt to the needs of the new times and harmless to humans; their work has given the first results through a doctoral thesis that, under the title “Biodegradation and toxicity of commercial tensioactives”, has been developed by Manuela Lechuga Villena, of the department of Chemical Engineering of the UGR.
This first study has focused on the analysis of four types of tensioactives which are usually present in the formulations of commercial detergents: lineal alkylbenzene sulphonate, which can be mainly found in manual dish soap and textile detergents and which is synthetised from non-renewable oil raw materials; nonylphenols polyethoxilates commonly used in industrial detergents for hard surfaces; fatty ethoxilated alcohols, appeared as an attempt for a more ecological answer to nonylphenols polyethoxilates and alkylpolyglucosids from oils and sugars, completely renewable raw materials which also have excellent cleansing properties and can be an excellent alternative to alkylbenzene.
An ecological and cheap alternative
After the having analysed these four wash compounds reproducing rivers' and seas' conditions in the laboratory to determine the toxicity of these products on sea bacteria, the researcher has concluded that fatty alcohols ethoxilated and alkylpolyglucosids show an excellent toxicological and biodegradation behaviour, which turns them into the best ecological alternative. In addition, according to Lechuga Villena, a previous work carried out by the research groups of the University of Granada [http://www.ugr.es] Tensioactives, Enzymes and Emulsions and Interfaces and Biochemical Technology confirms that the combination of these tensioactives leads to commercial products with an outstanding cleansing capacity.
The importance of this work of this work resides in the wide variety of implementations of these compounds –domestic uses, personal care, industrial and textile cleaning, hotel business, the restaurant and feeding industry– and, therefore, in their multiple effects in the long and short term not only on the environment, but also on human organism (dermatological, neurological, cardiologic actions, etc.)
One of the main objectives of this project is to prevent that the great proliferation of these chemical products ends up affecting humans and their environment. Therefore, these first results are “an indispensable step to formulate a detergent which is able to work with less aggressive means and with a high wash effectiveness”, explains the researcher, who adds that “this is at present one of the great challenges in the field of the companies that trade in this kind of detergents, which would be welcome both by consumers and by the producers who manufacture the specific and necessary machinery in the wash process”.
Despite government claims, orangutan populations have not increased. Call for better monitoring
06.11.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
Increasing frequency of ocean storms could alter kelp forest ecosystems
30.10.2018 | University of Virginia
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
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Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
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