Abstract
Heavy metals such as cadmium (Cd), chromium (Cr), lead (Pb), and mercury (Hg) are considered to be highly intoxicating pollutants in water. This is a primary concern for developed countries like the Philippines since it creates a substantial impact on the environment and health. Absorption of these heavy metals has only been of limited use because it undergoes methods which are expensive. This research focuses on determining the probability of Golden Apple Snail (GAS) shells (Pomacea canaliculata) as a cost-effective treatment in absorbing heavy metal Lead (Pb) in water. A new chelating agent has been prepared by pulverizing GAS shells and weighing them as 20g per treatment, two factors are observed in the study: agitation time of 6, 12 and 18 hours and varying concentrations of 50, 100, and 150 ppm. The absorptive capacity of the bio-absorbent was measured and quantified using the Flame Atomic Absorption Spectroscopy (FLAAS) as well as the residue of the Lead (Pb) in the solution. The result of the analysis shows that the absorptive capacity of GAS shells are at 99.86% with the absorption capacity in regards of concentration are at 99.97% and with agitation time 99.96%. Furthermore, results show that Sample Ca2, having 50 ppm concentration being treated for 18 hours rendered a 100% absorption of the heavy metal in the solution. It can, therefore, be concluded that GAS shell is a promising chelating agent in absorbing Lead (Pb).
Highlights
Intoxicating pollutants like cadmium, chromium, lead, and mercury is amongst the most alarming concerns especially with developing countries like the Philippines since they create a substantial impact on the environment and health [10].Heavy metal pollution occurs in many industrial wastewaters such as those produced by metal plating facilities, mining operations, battery manufacturing processes, the production of paint and pigments and the glass production industry [11]
Given the considerations and requirements, this study focused on the Golden Apple Snail (GAS) shells as an absorber of heavy metals, Lead (Pb) from aqueous solutions
This study focused on the potentiality and bio-significance of powdered GAS shells as a chelating agent to effectively absorb lead (Pb)
Summary
Intoxicating pollutants like cadmium, chromium, lead, and mercury is amongst the most alarming concerns especially with developing countries like the Philippines since they create a substantial impact on the environment and health [10]. Heavy metal pollution occurs in many industrial wastewaters such as those produced by metal plating facilities, mining operations, battery manufacturing processes, the production of paint and pigments and the glass production industry [11]. Lead (Pb) is highly toxic in nature even in small amounts could cause health concerns to humans [17]. Toxicity has been shown to occur at concentrations as low as 1 pM making significant reductions to the allowable levels of lead in drinking and irrigation waters in most countries [21]
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