Adsorption test using ultra-fine materials on heavy metals removal. (September 2022)

• Record Type: Journal Article
• Authors: Wibowo, Yudha Gusti; Safitri, Hana; Ramadan, Bimastyaji Surya; Sudibyo,
• Is Part Of: Bioresource technology reports. Volume 19(2022)
• Publication Date: 2022-09
• Subjects: Biochar -- Adsorption -- Heavy metals -- Langmuir -- Precipitation; Biomass energy -- Periodicals; Biotransformation (Metabolism) -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Waste products as fuel -- Periodicals; Waste products as fuel; Organic wastes; Factory and trade waste; Biotransformation (Metabolism); Biomass energy; Agricultural wastes; Periodicals; Electronic journals; 662.88
• DOI: 10.1016/j.biteb.2022.101149
• Languages: English
• ISSNs: 2589-014X

Abstract

Abstract: Acid mine drainage (AMD) contains numerous heavy metals, which need appropriate treatment before releasing to the environment. This study reports Fe and Mn removal from AMD by adsorption using ultra-fine biochar derived from coal, peat, and coconut shell. Clamshell waste was used and compared with pure CaO as a conventional precipitant. All adsorption materials were tested in an artificial solution at different pH conditions and contact time at room temperature. The adsorption process reached equilibrium at 100 min. Neutral pH was the best condition to achieve a higher removal efficiency. Results showed that biochar could successfully remove >90 % Fe and 80 % Mn. The isotherm model of each sorption fit with the Langmuir model. Metals can be precipitated in 10 min using clamshell waste, which is comparable with pure CaO. biochar, pure CaO, and clamshell are potential materials to solve heavy metal pollution and increase pH in wastewater. Graphical abstract: Unlabelled Image Highlights: Biochar was successfully prepared by coconut shell, coal, and peat. CaO was successfully created using the calcination process by clamshell waste. Biochar can remove metals ion using the adsorption process. CaO was successfully precipitated heavy metals and increased the pH of wastewater. The adsorption process of biochar fitted best with the Langmuir model.