Metals and micronutrients in some edible crops and their cultivation soils in eastern-central region of Tunisia: A comparison between organic and conventional farming.

In the present study, we evaluated the concentrations of several micronutrients and heavy metals (Fe, Mg, Mn, K, Ca, Na, Zn, Cu, Ni and Cd) in soils and in edible parts of two vegetables (Solanum lycopersicum cv. Amal) and (Lactuca sativa L. cv Augusta) and a fruit (Fragaria x ananassa cv.

Posidonia oceanica (L.) fibers as a potential low-cost adsorbent for the removal and recovery of orthophosphate.

Adsorption efficiency of orthophosphate from aqueous solution onto Posidonia oceanica fibers (POF) as a raw, natural and abundant material was investigated and compared with other common natural materials. A series of batch tests were undertaken to assess the effect of the system variables, i.e.

Removal of phosphorus from aqueous solution by Posidonia oceanica fibers using continuous stirring tank reactor.

The present study aims to develop a new potentially low-cost, sustainable treatment approach to soluble inorganic phosphorus removal from synthetic solutions and secondary wastewater effluents in which a plant waste (Posidonia oceanica fiber: POF) is used for further agronomic benefit. Dynamic flow tests using a continuous stirred tank reactor (CSTR) were carried out to study the effect of initial concentration of phosphorus, amount of adsorbent, feeding flow rate and anions competition. The experimental results showed that the removal efficiency of phosphorus from synthetic solutions is about 80% for 10 g L(-1) of POF.

Genetic profiling of Mycobacterium tuberculosis in Tunisia: predominance and evidence for the establishment of a few genotypes.

Typing analyses of 378 Mycobacterium tuberculosis isolates collected between the years 2001 and 2005 from three northern representative regions of Tunisia revealed a highly homogeneous population. Indeed, 84.9 % of all tuberculosis (TB) cases were attributed to the Haarlem, LAM or T families.