Equilibrium Sorption Studies of Hg (II) Ions from Aqueous Solution using Powdered Swamp Arum ( Lasimorpha senegalensis ) Seeds.

Journal of Applied Sciences and Environmental Management

EREPAMOWEI, YOUNG¹  TARAWOU, TIMI¹ 

关键词: Equilibrium;    ions;    swamp arum;    sorption studies;    solution;    seeds;   

DOI  :  

学科分类：环境科学（综合）

来源: University of Port Harcourt * Department of Pure and Industrial Chemistry

【 摘 要 】

The potential of swamp arum ( Lasimorpha senegalensis ) seeds as a low-costadsorbent for the removal of Hg (II) ions from aqueous solution was investigated in thisstudy. The influence of initial metal concentration on the percent adsorption of Hg (II) ionsonto powdered swamp arum seeds was studied in a batch system and the filtrate wasanalyzed using Atomic Absorption Spectrometry (AAS). The percent adsorbed for 10, 20,40, 60 and 80 mg/L of the aqueous solution were 97.7, 98.9, 99.3, 99.7, and 96.5%respectively. Three isotherms; Langmuir, Freundlich, and BET were used to model theequilibrium sorption of Hg (II) ions onto powdered swamp arum seeds, with a correlationcoefficient of 0.998, 0.784 and0.842 respectively. The Langmuir model fitted theequilibrium data best, with a correlation coefficient of 0.998 and a maximum adsorptioncapacity qm, of 5.917 mg/g. Thus, indicating monolayer coverage on the adsorbent. Theresults showed that swamp arum seed have the potential to be applied as alternative lowcostbiosorbent in the remediation of heavy metal contamination in waste water.

【 授权许可】

Unknown