Session 3 - Soil and groundwater contamination and remediation

[CEST2019_00572] Geochemical modelling as a tool to investigate chromium contamination in groundwater
by Apollaro C., Fuoco I.

Geochemical modelling is an essential tool to understand the water-rock interaction processes. In this work has been used the reaction path modelling to investigate the release and fate of geogenic Cr in ophiolitic Italian areas. During the water-rock interaction the geogenic trivalent Cr hosted in Cr-bearing minerals (serpentine minerals, spinels, pyroxene, etc.) of serpentinites rocks is oxidized in Cr (VI) highly toxic, resulting largely dangerous for environment and human health.

Session: 3, Room: C, at Thu, 09/05/2019 - 10:15 to 10:30
Oral presentation in Soil and groundwater contamination and remediation
[CEST2019_00530] Technology Critical Elements in industrial wastes as the source of soil contamination
by Rachwał M., Jabłońska-Czapla M.,Grygoyć K., Fornalczyk A.,Willner J.

The intensive development of industry, especially the mining and metallurgy, automotive and electrical industries, affects the increasing amount of Potentially Toxic Elements (PTE), including Technology Critical Elements (TCE) in the environment. This preliminary study focuses on the following TCE: Ga, Ge and Tl. The main thing they have in common is that they have not been much studied and the level of knowledge concerning the environmental impact of their use is quite slight.

Session: 3, Room: C, at Thu, 09/05/2019 - 10:30 to 10:33
Flash presentation in Soil and groundwater contamination and remediation
[CEST2019_00500] Groundwater quality and hydrogeochemical characterization of Khetri copper mining region, India
by Punia A., Siddaiah N.S., Bharti R.

The impact of copper mine on groundwater quality in the semi-arid region is evaluated, and also characterized for hydrogeochemical processes. Groundwater samples (post monsoon and pre monsoon) from Khetri copper mine region of Rajasthan, India were studied. In majority of groundwater samples, the values of analyzed parameters such as EC, Ca2+, Mg2+, Na+, HCO3- and Cl- exceed the WHO (2011) and Bureau of Indian Standards (2012) permissible limits.

Session: 3, Room: C, at Thu, 09/05/2019 - 10:36 to 10:39
Flash presentation in Soil and groundwater contamination and remediation
[CEST2019_00481] Origin of the salinity in the groundwater of the El Attaf alluvial aquifer
by Richa A., Touil S., Djezzar M., Douaoui A.

The choice of this research theme was guided by the desire to better understand environmental issues, namely salinity and its origin, through the use of geophysical data from various surveys carried out between 1969 (CGG) and 2002 (IFES), to highlight the impact of the geological and structural upheavals that occurred during the earthquake of October 10, 1980, on the hydrodynamic processes. The interpretation of the resistivity data revealed that water salinity is highly variable and generally high near Jebel Temoulga. Chemical analyzes of all wells in the region confirm this.

Session: 3, Room: C, at Thu, 09/05/2019 - 10:33 to 10:36
Flash presentation in Soil and groundwater contamination and remediation
[CEST2019_00155] Thermal degradation of perfluorooctanoic acid (PFOA)
by Stockenhuber S., Weber N., Dixon L., Lucas J., Grimison C., Bennett M., Stockenhuber M., Mackie J., Kennedy E.,

Per - and polyfluoroalkyl substances (PFAS) are a group of environmental contaminants, that are dispersed throughout the world. A number of areas have been affected by their persistence and biomagnification. PFAS remediation of contaminated material requires extensive knowledge of the species involved. A method to simplify the study of the thermal degradation of PFAS is presented in this paper, providing a solution to experimental and analytical challenges. A three-zone furnace allowed manipulation of both reaction temperature and gas flowrate (and consequently residence time).

Session: 3, Room: C, at Thu, 09/05/2019 - 09:45 to 10:00
Oral presentation in Soil and groundwater contamination and remediation
[CEST2019_00159] Thermal Decomposition of Chlorpyrifos - an Experimental Investigation
by Weber N., Stockenhuber S., Dixon L., Lucas J., Grimison C., Stockenhuber M., Mackie J., Benhelal E.,Kennedy E.

Organophosphate compounds are a group of chemicals that are commonly used in pest control. One widely used organophosphate is chlorpyrifos (CPF), which has been associated with acetylcholinesterase inhibition (AChE), an acute neurotoxin. Further, under thermal decomposition conditions, such as those that occur in bushfires, CPF has been shown to produce a dioxin-like compound 2,3,7,8-tetrachloro-[1,4]-dioxinodipyridine (TCDDpy). To assist in understanding the reaction of CPF, an experimental methodology was developed which enabled the study of its thermal decomposition.

Session: 3, Room: C, at Thu, 09/05/2019 - 10:00 to 10:15
Oral presentation in Soil and groundwater contamination and remediation
[CEST2019_00113] Screening of polar pesticides in groundwater in Hebei Province, China
by Huang Y.,Guo X., Rao Z., Yang Z., Liu C., Shi Z.

As a big agricultural country,China has a relatively high pesticide usage in unit area , which is three times higher than developed countries. About 80% of pesticides directly enter the soil and the water through leaching or surface runoff during the usage of pesticides. In particular, some of the polar compounds are easier to migrate than other compounds, causing pollution of surface water and groundwater.

Session: 3, Room: C, at Thu, 09/05/2019 - 09:30 to 09:45
Oral presentation in Soil and groundwater contamination and remediation