Soil and groundwater contamination and remediation-POSTER SESSION

[CEST2019_00646] Interactions between rhizosphere microorganisms and spontaneous plant species inhabiting smelter wastelands
by Siebielec S., Siebielec G., Sugier P., Stuczynski T.

The role of microorganisms in colonizing toxic smelter waste deposits by plants has not been sufficiently understood. The aim of the work was to assess interactions between microorganisms and most frequent spontaneous plants inhabiting two waste deposits in Piekary, Poland. The samples were collected in the summer of 2018 from rhizosphere of 8 plant species inhabiting the waste pile: 1. Thymus serpyllum; 2. Silene vulgaris; 3. Solidago virgaurea; 4. Echium vulgare; 5. Rumex acetosa; 6. Verbascum thapsus; 7. Solidago gigantea; 8. Eupatorium cannabinum. The samples were subjected to analyzes of enzymatic activity, abundance of microorganisms, functional (System Biolog) and genetic diversity (NGS), physicochemical properties (pH, metal content and solubility, nutrient content) and subsequently compared with the unplanted reference samples. Plant samples were analyzed for metals and nutrient contents.

Thursday
Poster presentation in Soil and groundwater contamination and remediation-POSTER SESSION
[CEST2019_00930] Applications of Remote Sensing in Remediation of Contaminated Water and Soil
by Butu M., Rodino S.

This paper reviews the use of remote sensing for practical applications in remediation of contaminated water and soil. Due to their flexibility of use, the Unmanned Aerial Vehicles open interesting new prospects in the management of remediation of contaminated water and soil regarding various aspects such as sources of contamination, spatial dimension of contamination, level of contamination. However, the specificity of this kind of vehicles and of the sensors that they are capable to transport still requires detailed research work before making it fully operational for most of the unspecialized human resource existing in remediation of contaminated water and soil sectors.

Thursday
Poster presentation in Soil and groundwater contamination and remediation-POSTER SESSION
[CEST2019_00182] The Characteristics of Soil Contamination in Industrial Complex in Korea
by Hyo-Jeong Lee, Jeong-Ho Choi, Won-Wook Kwun, Sang-Yeop Lee, Gwan-Ju Jung

It is expected that the possibility of soil contamination will be high as industrial complex will be treated with many harmful chemicals during industrial activities. Therefore, the Korea Environment Corporation has been conducting a detailed survey of Korea’s industrial complex since 2004.
There are about 1,193 industrial complexes in Korea. A total of 60 industrial complexes, 6,201 business companies, were surveyed between 2004 and 2018. Among them, 347 companies exceeded the standard for soil contamination, with a rate of about 5.5 percent.
The contaminated soil area of industrial complex is about 383,199㎡, the amount of contaminated soil is 663,849㎥. 282 companies are contaminated with soil, 17 are contaminated with groundwater, and 48 are contaminated with both soil and groundwater. The most significant excess of these contaminants were TPH, Zn, BTEX, Pb, and Ni.
The source of contaminants includes leaked storage facilities, mishandling and mismanagement, and brought in contaminated materials or contaminated land during industrial activities.
In the future, based on the results of this survey, the manual will be improved so that efficient investigations can be carried out in terms of time and cost, and used as promotional materials to prevent soil contamination.

Thursday
Poster presentation in Soil and groundwater contamination and remediation-POSTER SESSION
[CEST2019_00480] Modeling the spatial evolution of nitrogen pollution in groundwater and the amount of nitrogen leached under potato crops in the Khemis Miliana Plain
by Richa A., Touil S., Djezzar M., Douaoui A.

The maximum concentration of nitrate in drinking water admitted by the World Health Organization is 50 mg/l. Europe recommends a standard content of 25 mg NO3-/l according to the interdisciplinary research program on the environment. The present work quantifies spatially the evolution of this pollution and determines and estimates the influence of agricultural practices "calendars of irrigation and fertilization" on the quantity of nitrates leached under the potato crops towards the groundwater of the Khemis-Miliana plain usin Pilote N model. The spatial evolution of the average nitrate concentrations above the norms in the groundwater of the Khemis-Miliana plain represents 80% of the total area of the plain. The transfer of nitrates through the unsaturated zone was simulated by the PiloteN model giving an estimate of the amount of N leached under the potato crops, which represents, according to the model 40% of the total N supplied 300 KgN/ha on the ground. According to the model, the nitrogen leaching period is greater with the days of fertigation. In this context, a field study was conducted to get an idea of the agricultural practices brought to the soil of the Khemis-Miliana plain in order to know, on average, the quantities of nitrogen leached by calculating the nitrogen balance at the potato plot scale using an empirical method and the PiloteN.

Thursday
Poster presentation in Soil and groundwater contamination and remediation-POSTER SESSION
[CEST2019_00409] Combining phytoremediation with bioenergy production: Developing a multi-criteria decision matrix for species selection
by Amabogha O.N., Purchase D., Garelick H., Jones H.

Plant species required for both phytoremediation and bioenergy generation needs to satisfy certain important criteria such as translocation index, metal and drought tolerance, fast growth rate, high lignocellulosic content, good biomass production, adequate calorific value, and a good rooting system. It is therefore necessary to develop a set of comprehensive selection criteria to select the most appropriate plant species suited to attaining desired outcomes. In this study, we used a systematic review approach to develop a multicriteria decision matrix for species selection. Eight species (sunflower, Indian mustard, soybean, willow, poplar, Typha, Miscanthus, switch grass) were selected. Data from the literature relating to relevant species suitability criteria were aggregated, normalized and their suitability was analyzed and compared. Utility scores were assigned after criteria were weighted according to stipulated research objectives. The results showed that soybean has the best translocation index rate; silvergrass and switchgrass were the fastest growers; switchgrass, willow and poplar have better metal tolerance. On their bioenergy potentials, the lignocellulosic biomass percentage of poplar and sunflower scored the highest; with sunflower having the highest biomass production and poplar having the best calorific value among the species. These results are subject to differing priority ratings according to user preference.

Thursday
Poster presentation in Soil and groundwater contamination and remediation-POSTER SESSION