Evaluation of heavy metals contamination and pollution indices levels in surface sediments of the Bizerte coastal line, Tunisia.

Heavy metal concentrations in surface sediments collected from 17 stations samples in Bizerte coastal line were determined in order to evaluate the contamination status in the region. Heavy metal concentrations (mg/kg) of Bizerte coast line followed the decreasing trend of Fe > Pb > Zn > Mn > Cu > Cr > Ni > Co > Cd. The pollution degree of the surface sediment collected from 17 samples station in Bizerte coast line by heavy metals was evaluated on the basis of pollution indices (EF, Igeo, CF, PLI and CD).

Diuron environmental levels effects on marine nematodes: Assessment of ecological indices, taxonomic diversity, and functional traits.

Coastal marine systems are the most sensitive zones to emerging pollutants. The present study aims to investigate the effect of Diuron on the meiofaunal assemblages, collected from the Bizerte channel (Tunisia). Microcosm experiments were set up using four increasing Diuron concentrations [D1 (10 ng g dry weight (DW)), D2 (50 ng g DW), D3 (250 ng g DW) and (1250 ng g DW)] compared to non-contaminated sediments (controls) and all plots were incubated for 30 days.

Site selection for artificial recharge with treated wastewater with the integration of multi-criteria evaluation and ELECTRE III.

The suitable location selection for artificial recharge with treated wastewater is an important issue, especially in arid and semiarid countries as a result of rapid population growth, increasing water demand, excessive use of groundwater resources, and mismanagement of limited freshwater resources. However, the determination of suitable sites is a complex process affected the environment, social, and economic concerns. This study shows the integration of the geographic information system (GIS) and the multi-criteria evaluation (MCE) to determine a suitable artificial recharge site with treated wastewater for Ariana, Tunisia.

Soil contamination by heavy metals in landfills: measurements from an unlined leachate storage basin.

Landfills are sources of groundwater and soil pollution due to the production of leachate and its migration through refuse. This study was conducted in order to determine the extent of soil pollution within and around the Jebel Chakir landfill, located in the Tunis City, Tunisia. The main objective was to characterize soil samples of an unlined storage basin in relation to heavy metal concentrations in the Jebel Chakir landfill to the southwest of Tunis, Northern Tunisia.