Pollution Research Paper

Vol 38, Issue 4, 2019; Page No.(853-861 )

BIOSORPTION OF LEAD FROM INDUSTRIAL WASTEWATER USING SOME PART OF DATE PALM TREES

BAYAN A. MAHDI, ANWAR A. MAKI, ZUHAIR, A. ABDULNABI, ASAAD M.R. AL-TAEE

Abstract

The lead removal capacity of the aqueous solution was examined with date palm trees (DPT). The effects of pH, contact time, temperature and mixing speed on biosorption were investigated. The residual concentration of lead in aqueous solution was determined by atomic absorption spectrophotometer. The results of the using of the DPT pinnae indicated that the optimal time was 50-90 min and high adsorption of Pb was at first 40 min, pH 6.5, 15R oC and 100 rpm. Whereas DPT blade showed the optimal time was 60-90 min with a high adsorption of Pb at first 20 min, pH 6.5, 15 ºC and 100 rpm. While DPT fiber, the equilibrium time was at 40-50 min with a significantly high adsorption of Pb during first 30 min, pH 5.5, 25 ºC and 50 rpm. The optimum parameters which studied in aqueous solution have been applied to remove heavy metals from industrial samples. The results showed high lead adsorption (37.68%, 41.12%, and 49.72%) for the DPT pinnae, blade and fiber, respectively. The functional groups of DPT were determined using using the fourier transform infrared (FT-IR) spectrophotometer analysis. The scanning electron microscope (SEM) confirmed the elimination of lead causing morphological changes.

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