Heavy metals

Impact of reject brine chemical composition on soils in Riyadh Saudi Arabia, was evaluated. Soil samples at three depths along transect on both sides of the pond were taken, in addition to, water samples from feed, product, reject and pond. Results showed that, the salinity of the brine reached up t

To date, risk assessment for greywater reuse systems has almost exclusively been focussed on pathogenic microorganisms and conventional water quality parameters. Little is known about the risks from micropollutants present in greywater, nor about the potential for greywater treatment systems to act

Sediments can accumulate various pollutants and are widely used for environmental monitoring of human impact. The central purpose of this study was to examine the levels of eight heavy metals in subtidal sediments in the vicinity of two thermal power/desalination plants in Oman: (1) the Barka power/

A local clay from Jebel Chakir (northwest of Tunis, Tunisia, North Africa) has been characterized. The mineralogical and chemical compositions of the materials were determined by X-ray diffraction (XRD), infrared spectroscopy (IR) and by the inductively coupled plasma technique (ICP). The cation exc

The removal of binary mixed metal ions [Hg(II), Pb(II), Cu(II) and Cr(III)] from water was investigated. Two different sewage sludge-based adsorbents were produced and used for this purpose: PS, obtained by pyrolysis of sewage sludge, and AS, by ZnCl2 chemical activation of sewage sludge followed by

The purpose of this paper is to determine the effectiveness of a reed bed sludge treatment system in Italy after 1 year of operation in two urban wastewater treatment plants, where Phragmites australis was planted directly in emergency beds rearranged for the project. To evaluate the process of stab

In a series of pot trials, fodder radish (Raphanus sativus L. var. oleiformis Pers.) was cultivated in pyrite cinders heavily polluted by various heavy metals (HM). The effects of application of humic acids (HA) to the cultures were evaluated at various concentrations (0.1 and 1 g kgÀ1 of cinders) a

Meranti tree sawdust, an inexpensive material, is currently being investigated as an adsorbent for the removal of Cu(II) and Pb(II) ions from aqueous solutions. In this work, adsorption of Cu(II) and Pb(II) ions on Meranti tree sawdust has been studied by using batch techniques. The equilibrium adso

The removal of zinc from synthetic wastewater was conducted by micellar-enhanced ultrafiltration (MEUF), using the anionic surfactant sodium dodecyl sulfate (SDS). A two-level full factorial design was used in order to analyze the effect of pressure, membrane nominal molecular weight limit (NMWL), z

The present work experimentally studied the clarification of wastewater using the electroflotation technique (EF) with aluminum electrodes. In the first part, we have studied the principal parameters (feed tension U, distance between electrodes D, period of treatment t, pH and conductivity κ) affect