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Abstract
Arsenic contamination in groundwater has led to pandemic influenza and many disease in Viet Nam and its neighbour country. It is estimated that about 57 million people in the world are affected by Arsenic contamination in drinking water. In Viet Nam, especially in Mekong River Delta, the Arsenic was detected in drinking water is up to 3000 μg/l, many times higher value allowed by the World Health Organization (WHO) of 10 μg/l. In this study, the laterite absorbent was used to treat Arsenic in groundwater in Mekong River Delta in Viet Nam. It is determined that laterite is a powerful absorbent for Arsenic removal in groundwater.
Highlights
Arsenic pollution (As) in groundwater is one of the major threats to human health
According to the results of the EDX of the laterite material shown in Figure 2, at the voltage of 0-2 kV, the emission of X-rays corresponds to the atomic number of the elements C, Fe, Al, Si, O in which Fe is the electronic element interacting to create the largest wavelength
From here it can be commented that laterite species in different parts of Vietnam have different chemical compositions, but they have common characteristics, which are rich in Fe, Al and Si elements
Summary
Arsenic pollution (As) in groundwater is one of the major threats to human health. As can cause serious diseases such as skin cancer, bladder, kidney, lung, and many other diseases. The World Health Organization (WHO) recommends the limitation of As is 10 μg/L in drinking water [2]. Finding the novel solution to treat As in groundwater is very necessary. As common presence is As3+ (arsenite) or As5+ (arsenate) [3]. Arsenite compounds are 50 times more toxic than arsenates, and arsenite is more soluble in water than arsenate at the same duration time, respectively [4]. Arsenates are adsorbed quite strongly on various mineral surfaces, iron/oxide hydroxide, while the adsorption capacity of arsenite is poor [5]
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