title: Wastewater treatment by batch adsorption method onto micro-particles of dried Withania frutescens plant as a new adsorbent.
abstract: A new adsorbent for removing metallic elements, nitrate and phosphate ions from municipal and industrial wastewaters has been investigated. This new adsorbent consists of micro-particles of dried Withania frutescens plant (<500 μm). Batch experiments were conducted to evaluate the removal of metallic elements and anions from raw wastewaters by W. frutescens particles. The results show that the micro-particles of W. frutescens plant presented a good adsorption of metallic elements, nitrate and phosphate ions from both real wastewaters. This adsorption increased with increasing of contact time. The percentage of metallic elements removal from industrial wastewater by W. frutescens plant was 98 ≈ 99% for Pb(II), 92 ≈ 93% for Cd(II), 91 ≈ 92% for Cu(II) and 92 ≈ 93% for Zn(II). The maximum adsorption capacity was dependent on the type of ions. The results also indicate that the values of chemical oxygen demand (COD) decrease after the contact with W. frutescens particles. Based on the results it can be concluded that the dried W. frutescens plant appears to be an economical and environmentally friendly material for wastewater treatment.
authors.affiliation: Department of Chemistry, Faculty of Science, BP. 8106, Hay Dakhla, Agadir 80000, Morocco. mmchiban@yahoo.fr
authors.forename: Mohamed
authors.initials: M
authors.lastname: Chiban
authors.forename: Amina
authors.initials: A
authors.lastname: Soudani
authors.forename: Fouad
authors.initials: F
authors.lastname: Sinan
authors.forename: Michel
authors.initials: M
authors.lastname: Persin
mesh_terms: D000327:Adsorption; D000838:Anions; D057919:Biological Oxygen Demand Analysis; D002104:Cadmium / Q000737:chemistry; D003300:Copper / Q000737:chemistry; D007854:Lead / Q000737:chemistry; D009566:Nitrates / Q000737:chemistry; D010710:Phosphates / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000191:economics / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis; D032341:Withania / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry
chemical_list: D000838:Anions; D009566:Nitrates; D010710:Phosphates; D014874:Water Pollutants, Chemical; D002104:Cadmium; D007854:Lead; D003300:Copper; D015032:Zinc