Abstract
BackgroundSorption and biodegradation are the primary processes of organic pollution remediation in aquatic and soil/sediment environments. While researchers have substantially reported their findings regarding these processes, little attention has been given to description of experimental apparatus. This technical paper aims to present the development and detailed design of a fixed-bed column recirculation (FBCR) system which has been widely applied to investigate sorption and biodegradation of organic pollutants in aquatic and/or sediment environments.FindingsThe FBCR system was developed and tested by three experiments investigating sorption and biodegradation of two herbicides (isoproturon and mecoprop) in different saturated materials (hydrofilt and river sediment). Efficiency of the FBCR system was assessed according to criteria i.e. reliability, leaking inhibition, reproducibility, practical of use and cost. The results indicated that the latest version (Version 4) of the FBCR system has been significantly improved and ready to extend to similar studies.ConclusionsThis system is therefore recommended to researchers who intend to investigate the remediation of organic pollutants in aquatic, soil and sediment environments.Electronic supplementary materialThe online version of this article (doi:10.1186/s40064-016-3551-0) contains supplementary material, which is available to authorized users.
Highlights
Sorption and biodegradation are the primary processes of organic pollution remediation in aquatic and soil/sediment environments
This system is recommended to researchers who intend to investigate the remediation of organic pollutants in aquatic, soil and sediment environments
This technical paper aims to present the development and detailed design of a fixed-bed column recirculation (FBCR) system which can support for investigation of sorption and biodegradation of organic pollutants in soil/sediment
Summary
In aquatic and riverbed environments, various processes such as sorption, biodegradation, redox reactions can directly and/or indirectly influence on both surface water and groundwater quality (Fig. 1) (Hiscock and Grischek 2002). 2012), little attention has been given to description of how to technically reproduce and efficiently apply this system This technical paper aims to present the development and detailed design of a FBCR system which can support for investigation of sorption and biodegradation of organic pollutants in soil/sediment. Removable glass tendons were designed and placed at the two ends of the column in order to support the filter paper and fix the packing material (Item 2, Fig. 4). In this version, packing material step was easier and quicker through the only upper conical cap.
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