Effect of Cross-Linking Waste Protein with Diepoxides on its Biodegradation under Anaerobic Conditions
- 75 Downloads
Biodegradability testing was performed in an aqueous environment under anaerobic conditions after inoculation with digested sludge from municipal wastewater treatment plant. In cross-linking with 1,2:3,4-diepoxybutane in limits 0.8–9.1% weight, biodegradability degree decreased from 76.8 to 62.2%; when 1,2:7,8 diepoxyoctane in quantities 1.1–13.2% weight was used, biodegradability degree dropped more prominently – from 72.3 to 22.8%. There is obviously a direct connection between growing cross-link degree (assessed by so-called fixation index) and decreasing readiness to biodegradation, apparently owing to build-up of a network forming an obstacle to access of micro-organisms and enzymes.
KeywordsBiodegradation Anaerobic Cross-linking Proteins Hydrolyzate Diepoxides
This work was accomplished with financial support for research by Research Projects of the Ministry of Youth, Education and Sports of the Czech Republic, No. 7088352101.
- 2.Dalev PG, Staromanova E, Dalev D, Patil RD, Mark JE, Vassileva E, Fakirov S (2001) Biotechnol Biotechnol 39:116Google Scholar
- 4.de Graaf LA, Kolster P (1998) Macromol Symp 127:51Google Scholar
- 5.Tu R, Quijano RC, Lu CL, Shen S, Wang E, Hata C, Lin D (1993) Int J Artif Organs 16:537Google Scholar
- 11.Tupý M (2005) Thesis. FT UTB in Zlín, ZlínGoogle Scholar