Understanding of the hydrobiogeochmical processes in characterization of petroleum contaminated shallow groundwater
Understanding of the hydrobiogeochmical processes in characterization of petroleum contaminated shallow groundwater
Previously Published Material: A few papers being reviewed were published in Journals. A major part of the BTEX fate and transport under influence of flunctuating groundwater table has not been published any where.
Abstract ID#: 36324
English Abstract:
Successful remediation of contaminated sites is always based upon detailed understanding of the geological, hydrogeological and biochemical conditions leading to well constructed site characterization. We present a review for studies of bioremdiation of a petroleum contaminated shallow groundwater sites and explore the detailed geological, hydrogeological and biochemical interfaces among the vadose and saturated zones by field investigation, lab-based studies and numerical modeling.
Based on a series of field investigations of a petroleum contaminated site in the NE China, a leakage form a faulty oil abstraction borehole was identified to produce a contamination in the soil and sallow groundwater system.
With support of much monitoring data from the field samplings, data analysis and further interpretations of the remediation potentials, a series lab-based bench scale experiments were carried out for treatbility and understanding of the fate and transport mechanism of the petroleum contamination, supporting in-situ remediation with enhanced monitored natural attenuation, air/bio sparging and permeable reactive barriers. BTEX have been studied with particular focus of impact of the fluctuation groundwater table. The related hydro-geochemistry of such conditions were detailed for understanding of the fate/transport of BTEX compounds. The microbial community related to site and lab conditions were determined by 16S rRNA PCR-DGGE molecular technique and selective DNA sequencing. These results will provide important information about the individual prokaryotes and potential metabolic pathways involved in petroleum biodegradation.
Based upon these informations in essential understanding of the hydro-geochenistry, biodegradation kinetics, under a range of different environmental conditions, a in situ field AS/BS remediation was undertaken. The improved dispersive and reactive transport predictive modeling, based upon the reliable flow and advective transport modelling was achieved for simulation of the field scale remediation designs and environental impact and risk assessment.