Effective degradation and detoxification of landfill leachates using a new combination process of coagulation/flocculation-Fenton and powder zeolite adsorption

Effective coagulation-flocculation treatment of highly polluted palm oil mill biogas plant wastewater using dual coagulants: Decolourisation, kinetics and phytotoxicity studies

“…In another study, combination of coagulation, acid cracking, and Fenton-like process could result the phytotoxicity of final olive oil mill wastewater to decrease (Yazdanbakhsh et al, 2015). Another combination was reported by Turki et al (2015), where they found high toxicity removal up to 90% in their phytotoxicity test of landfill leachates. The combination was coagulation-flocculation-Fenton and powder zeolite adsorption (Turki et al, 2015).…”

“…Another combination was reported by Turki et al (2015), where they found high toxicity removal up to 90% in their phytotoxicity test of landfill leachates. The combination was coagulation-flocculation-Fenton and powder zeolite adsorption (Turki et al, 2015). Lee et al (2011) has used a ferric chloride-polyacrylamide inorganic-organic hybrid polymer which was synthesized using a ferric chloride/polyacrylamide ratio of 1:1 via free radical solution polymerization.…”

Coagulation–flocculation process for landfill leachate pretreatment and optimization with response surface methodology

“…Similarly, Verdenne et al [8] obtained 18% COD removal at pH 3 by applying the coagulation-flocculation for the treatment of old leachates. Moreover, Turki et al [11] showed also that the pH played a vital role in COD removal that reached the highest value (45%) with a pH of 5.5. In general, chemical coagulation is a process which is highly pH dependent.…”

“…Preliminary experiments allowed us to select four factors among eight potentially influent factors (pH, coagulant dosage, coagulation time, mixing speed in the coagulation step, dosage of flocculant, time flocculation, mixing speed in the flocculation step and decantation time). To optimize the levels of the selected variables, one can use the conventional experimentation method that involves changing one variable at a time, and maintaining the others fixed [5,10,11]. However, this experimentation method requires many experimental runs, that are time-consuming, and ignores the interaction effects between the parameters and leads to a low optimization efficiency [12].…”

Use of Response Surface Methodology for Optimization of Nickel Adsorption in an Aqueous Solution by Clay

“…For this reason, different processes have been worn as precipitation, ion exchange, cementation, coagulation, sedimentation and adsorption (Tovar-Gómez et al, 2015). Among these treatment, adsorption was applied successfully to eliminate organic and inorganic compounds (Turki et al, 2015). However, this technique had many limitations like costly maintenance and disposal of used adsorbent.…”