The biodegradation of monomeric and dimeric alkylammonium surfactants

The Effects of Molecular Properties on Ready Biodegradation of Aromatic Compounds in the OECD 301B CO2 Evolution Test

“…Previous investigations reported some correlations between biodegradation and molecular structure properties of organic pollutants in some typical biodegradation processes, and QSBR models were then established (Boethling and Sabljic 1989;Brycki et al 2014;Gamberger et al 1996;He et al 2013;Lu et al 2015;Xu et al 2012). However, most of the biodegradation data in those studies were cited from other references or databases rather than obtained under the identical experimental conditions.…”

“…Based on different principles, there are six RBTs (301A-F) methods in the OECD guidelines. Without any limit for the solubility, volatility, and absorbability of the tested compounds, 301B, 301D, and 301F are widely employed in the environmental impact assessment of pharmaceuticals (Girardi et al 2013;Weltman et al 2011), surfactants (Brycki et al 2014;Kön-necker et al 2011), lubricants (Stolte et al 2012, hormone-like chemicals (Pessala et al 2009;Stasinakis et al 2008), detergents (Pedrazzani et al 2012), dyes (Mei et al 2015), antifouling agents of ships (Wang et al 2014), etc. However, 301A and 301E tests are not applicable for insoluble and volatile compounds, which are generally used for investigating and evaluating the primary biodegradation of some soluble pharmaceuticals and nonionic surfactants in the aquatic environment (Jurado et al 2009;Yamamoto et al 2009).…”

“…A series of investigations have indicated that structure of chemicals is one of the key parameters influencing their biodegradability in the natural ecosystems (Boethling et al 2007;Brycki et al 2014;Rucker and Kummerer 2012;Sabljic and Peijnenburg 2001). Chemical structure properties can be clearly described by molecular properties, which can be easily obtained by computation (Bao et al 2012).…”

“…Chemical structure properties can be clearly described by molecular properties, which can be easily obtained by computation (Bao et al 2012). A summary of quantitative structure-biodegradation relationship (QSBR) models have been established based on the correlations of biodegradation and molecular properties for many organic pollutants, such as nonylphenol, PAHs, pesticides, PCBs, surfactants, and sulfonated azo dyes (Baker et al 2004;Boethling et al 2007;Brycki et al 2014;Jaworska et al 2003;Lu et al 2015;Parsons and Govers 1990;Pavan and Worth 2008;Raymond et al 2001;Rucker and Kummerer 2012;Sabljic and Nakagawa 2014;Sabljic and Peijnenburg 2001;Suzuki et al 2001;Xu et al 2012). Hammett substituent constant, Octanol/water partition coefficient, the energy of the highest/lowest occupied molecular orbital, molecular connectivity indices and Van der Waals volume are the most frequently used molecular properties in QSBR studies (Boethling and Sabljic 1989;Degner et al 1991;Gamberger et al 1996;He et al 2013;Ostojić et al 2014;Parsons and Govers 1990;Raymond et al 2001;Worrall and Thomsen 2004;Xu et al 2012;Yang et al 2006).…”

Preparation of Xylanase Loaded Biomass-based Deinking Agents and their Application in Secondary Fiber Recycling

“…Moreover, the raw materials are non-renewable, and with the increasing exhaustion of raw materials, the production costs will only continue to rise. Therefore, using renewable biomass for non-renewable fossil resources to prepare environmentally friendly and inexpensive deinking agents will be the developmental focus of the future (Brycki et al 2014). Zhang et al (2017).…”