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Technologies used for heavy metals removal from wastewater

Harun, Hasnida and A. Hamid, Hazren and Sunar, N.M. and Ahmad, Faridah Hanim and Alias, R. and Hamidon, Nuramidah and Baul, Mary Lyana (2018) Technologies used for heavy metals removal from wastewater. In: Sustainable Environmental Technology. Penerbit UTHM, pp. 79-85. ISBN 978-967-2216-44-5

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Heavy metals are the elements found in periodic table that exhibits metallic properties and characterised by 5 g/cm3 of density [1]. Heavy metals are contaminants from inorganic source that tend to pollute the ecosystem due to anthropogenic activities like mining, welding, semiconductors and electrical appliances manufacturing industries. Heavy metals can be broken down or metabolised. The presence of heavy metals without any proper management can bring negative effects to human and ecosystem. However, living organisms do require several types of metals such as zinc, iron, copper, lead, nickel and magnesium at trace amount for metabolic function purposes. If the presence of these metals in large amount without any controlled, it can cause serious health disorders if ingested at exceeded concentration limits. Other than that, nonessential metals such as mercury, nickel, cadmium and arsenic also can bring irreversible damage to human body even at trace concentration. The effects of these nonessential metals including brain damage, blood circulation damage, carcinogen and nervous system damage [1]. Many methods have been proposed to remove heavy metals from wastewater such as adsorption, coagulation and flocculation, ion-exchange membrane filtration and chemical precipitation.

Item Type: Book Section
Subjects: T Technology > T Technology (General)
Divisions: Centre of Diploma Studies > Department of Electrical Engineering
Depositing User: Mr Abdul Rahim Mat Radzuan
Date Deposited: 31 Oct 2019 02:43
Last Modified: 31 Oct 2019 02:43
URI: http://eprints.uthm.edu.my/id/eprint/11912
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