Orange Peels as Biosorbent for Heavy Metals and Its Application in Water Pollution Remediation Studies
Abstract
Ecosystems and public health are seriously threatened by heavy metal poisoning of water sources, which is growing. Heavy metal removal from wastewater using conventional technologies is either costly, ineffective or results in secondary pollutants. In this regard, biosorption has become an affordable and environmentally beneficial substitute. The mitigation study of heavy metals from wastewater is crucial for the protection of the environment and human health. Efforts have been made to use the effectiveness of orange peels to remove Cu2+ ions from synthetic wastewater. By emphasizing the advantages of using agricultural waste and providing low-cost, sustainable solutions to water contamination, this research opens the door for future advancements in environmental bioremediation methods. The concentration of residual metallic ions was determined using a UV spectrophotometer. Different reaction parameters were examined such as metal ions concentration in solution, pH, contact time, and effect of pretreatment. Pretreatment of orange peels was done with 0.1 N HCl and the same mentioned parameters were studied. Maximum percent uptake is 29.60% and adsorption capacity (0.00074 mg/g) after 24 h at pH 5.5 for 0.01 M concentration of Cu2+ ions by pretreated orange peels as biosorbent. Physical characterization of orange peels and HCl-treated orange peels was done by using Fourier transform infrared spectroscopy.
Keywords: Water pollution, heavy metals, pretreatment, adsorption, orange peels
Keyworde: Water pollution, heavy metals, pretreatment, adsorption, orange peels
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