Adsorbent for Efficient Removal of Mercury(ii) From Aqueous Solution

Abstract

Decontamination of mercury from aqueous media remains a serious task for health and ecosystem protection. Removal of Hg(II) from the aqueous solution by ZnO:S has been investigated and elucidated. The effect of various parameters such as solution pH, adsorbent dose, contact time, initial adsorbate concentration has been studied and optimized. The optimized parameters for metal ion are pH value of 2.4, the equilibrium time was attained after 30 min, and the maximum removal percentage was achieved at an adsorbent loading weight of 0.08 g. It was found that the adsorption capacity of ZnO:S increased with increase in the initial mercury concentration. The equilibrium and kinetic data were found to be in good agreement with Freundlich isotherm model. * Corresponding AuthorsFax: +20 2 26822991 E-Mail: saadsmhassan@yahoo.com (S.S.M. Hassan) [a]

Adsorption of Mercury(II) using Activated Produced from Bambusa vulgaris var. striata in a Fixed Bed Column

“…The same results were reported by several investigators that studied Hg(II) adsorption by different adsorbents, i.e. sulphur doped zinc oxide (Hassan et al 2017) and bamboo leaf powder (Mondal et al 2013). The time of breakthrough as the duration for up to zero concentration of column outlet, increases from around 100 to 200 min, when Hg(II) initial concentration was raised from 50 to 100 mg/L for the same flow rate of 20 mL/min.…”

“…The amount of Hg(II) that accumulates is a significant amount and people should be wary as it can cause very adverse health effects (Kabiri et al 2016). Many cases of Hg (II) poisoning are reported around the world caused by the fish and shellfish consumption contained of Hg(II) (Hassan et al 2017). For the environment protection, the process of removing Hg(II), is an essential operation, which is found in many industrial wastes, electrochemical, mining and electroplating (Mondal et al 2013).…”