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Titlebook: Biodegradability of Surfactants; D. R. Karsa,M. R. Porter (Consultants in Specialit Book 1995 Chapman & Hall 1995 Acetat.Ammonium.Compound

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發(fā)表于 2025-3-21 20:08:16 | 只看該作者 |倒序?yàn)g覽 |閱讀模式
期刊全稱Biodegradability of Surfactants
影響因子2023D. R. Karsa,M. R. Porter (Consultants in Specialit
視頻videohttp://file.papertrans.cn/187/186778/186778.mp4
圖書封面Titlebook: Biodegradability of Surfactants;  D. R. Karsa,M. R. Porter (Consultants in Specialit Book 1995 Chapman & Hall 1995 Acetat.Ammonium.Compound
影響因子The awareness and development of ‘biodegradable‘ surfactants pre-dates current pressures by the environmental movement by nearly three decades, wherein a responsible industry mutually agreed to replace ‘hard‘, non-biodegradable com- ponents of household detergents by ‘soft‘, biodegradable alternatives, without course to legislation. The only requirement at that time was for surfactants used in detergents to exhibit a ‘primary biodegradability‘ in excess of 80%; this referring to the disap- pearance or removal from solution of the intact surface active material as de- tected by specified analytical techniques. This proved useful, as observed environmental impacts of surfactants, e.g. visible foam on rivers, are associated with the intact molecule. Test methods for ‘primary biodegradability‘ were eventually enshrined in EU legislation for nonionic surfactants (Directive 821242/EEC, amended 73/404IEEC) and for anionic surfactants (Directive 8212431EEC, amended 73/405IEEC). No approved test methods and resultant legislation have been developed for cationic and amphoteric surfactants to date. The environmental classification of chemical substances, which of course includes surfactants,
Pindex Book 1995
The information of publication is updating

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發(fā)表于 2025-3-21 20:52:08 | 只看該作者
Book 1995 73/404IEEC) and for anionic surfactants (Directive 8212431EEC, amended 73/405IEEC). No approved test methods and resultant legislation have been developed for cationic and amphoteric surfactants to date. The environmental classification of chemical substances, which of course includes surfactants,
板凳
發(fā)表于 2025-3-22 03:03:12 | 只看該作者
地板
發(fā)表于 2025-3-22 05:55:49 | 只看該作者
What is biodegradation?,od-chains involving herbivores, carnivores and omnivores. During the flux of carbon through these routes, some is oxidised by the consuming organisms to derive energy, while the resulting CO. is returned to the atmosphere. However, much organic material enters the soils, waters and sediments in the
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發(fā)表于 2025-3-22 09:48:23 | 只看該作者
D. R. Karsa,M. R. Porter (Consultants in Specialit
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發(fā)表于 2025-3-22 14:53:12 | 只看該作者
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發(fā)表于 2025-3-22 20:16:58 | 只看該作者
Introduction to surfactant biodegradation,r .. The major use of surfactants, in terms of the quantities used, is as a component in cleaning preparations or detergents. Such cleaning operations usually result in the discharge of an aqueous effluent, and it is the biodegradability of the surfactants in that effluent, which is the subject of this book.
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發(fā)表于 2025-3-22 21:56:45 | 只看該作者
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發(fā)表于 2025-3-23 04:38:03 | 只看該作者
Kreisel im zentralsymmetrischen Schwerefeld,found that branching in the side chain resulted in alkylaryl sulphonates which were less readily attacked by bacteria than were their straight-chain isomers. Eventually the TPBS type was substituted by the straight-chain (linear) varieties (LABS) and the problems associated with TPBS were overcome.
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發(fā)表于 2025-3-23 07:53:39 | 只看該作者
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