Biosorption of Cu Ions from Sewage Water Using Water Hyacinth as a Low Cost Biosorbent

Abstract

Biosorption of heavy metals is an effective technology for the treatment of Iraqi sewage water; an analytical technique used Atomic absorption spectroscopy of flame to estimate the ions of heavy metals and to monitor adsorption capacity and adsorption isotherms.Results are presented showing the sorption of Cu(II) from solutions as adsorbed by biomass of Powder stems of water hyacinth plant as adsorbent surface.At room temperature, Packed column method experiments were conducted to determine the adsorption properties of the biomass and it was observed that the adsorption capacity of the biomass strongly depends on some factors such as flow rate, particles size adsorbent, weight of adsorbent, initial concentration of adsorbed and effect of PH, and that the maximum (highest) adsorption capacity was 100% of Cu(II) ions solution at 70ppm using 1gm packed column with 300micron of powder stems plant, This attributed to the increase in the number of active sites on the plant. The isotherm adsorption data were analyzed using Langmuir and Freundlich, Adsorption isotherms were also obtained and maximum removal of Cu(II) of dry weight biomass at a pH of 7.0 in 4 drop/min, obeys to Freundich's equations through correlation values R2 obtained. Results indicate the model was good fits for experimental data based on correlation coefficient, R2 values. The Freundlich n (1.587) shows that the biosorption was spontaneous, good and physical. The results indicated that the biomass of hyacinth water plant is suitable for the development of efficient biosorbent for the removal and recovery of Cu(II), from Iraqi Sewage water.