Use of longan peel as an adsorbent for metal ion(cadmium and lead) adsorbtion in aqueous solution | เธเธฒเธฃเนเธเนเนเธเธฅเธทเธญเธเธฅเธณเนเธขเนเธเนเธเธชเธฒเธฃเธเธนเธเธเธฑเธเนเธญเธญเธญเธเธเธญเธเนเธฅเธซเธฐเนเธเธเนเธกเธตเธขเธกเนเธฅเธฐเธเธฐเธเธฑเนเธงเนเธเธชเธฒเธฃเธฅเธฐเธฅเธฒเธข
2007
Prachaub Chaibu(Maejo University, Chiangmai (Thailand). Faculty of Fisheries Technology and Aquatic Resources) E-mail:[email protected] | Buncha Chawanchai(Maejo University, Chiangmai (Thailand). Faculty of Fisheries Technology and Aquatic Resources)
Longan peel from industrial processing was developed and studied for used as adsorbents and their heavy metal ions adsorption properties from aqueous solution. The three method modifications including dried longan peel, concentrated sulfuric acid treated longan peel and basic solution treated longan peel. Maximum heavy metal ion adsorption on these longan peels were observed to be 87.53-97.77 percentages at solution pH of 4. The adsorption completed in 1 hour in batch condition. Lead ions could be adsorbed by these longan peel better than Cadmium ions. Moreover, heavy metals adsorbent dosages and particle size of the adsorbents. The adsorption equilibrium experiments in batch condition showed that maximum adsorption capacity of upper longan peel for cadmium were 5.7405 1.2680 and 3.5273 mg/g and for lead were 0.0322 21.1416 and 0.6575 mg/g respectively. In addition, the cadmium ions removed from wastewater from scientific laboratory in appropriated condition were found. Highest cadmium content could be remove by concentrated sulfuric acid treated longan peel was 88.75 percentages. And non-significant cadmium content could be remove by dried longan peel and basic solution treated longan peel were 84.45 and 83.75 percentages respectively
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