PEMANFAATAN KULIT BUAH NAGA MERAH (HYLOCEREUS POLYRHIZUS) DALAM PEMBUATAN ARANG AKTIF SEBAGAI ADSORBEN ION Pb2+

Farazdaq Az-zahra, NIM.: 21106030001 (2026) PEMANFAATAN KULIT BUAH NAGA MERAH (HYLOCEREUS POLYRHIZUS) DALAM PEMBUATAN ARANG AKTIF SEBAGAI ADSORBEN ION Pb2+. Skripsi thesis, UIN SUNAN KALIJAGA YOGYAKARTA.

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Abstract

The heavy metal lead (Pb) is a dangerous water pollutant that generally originates from human activities such as industrial, domestic, and agricultural waste. Pb is toxic, not easily decomposed, and can accumulate in organisms through water and the food chain.. This study treats Pb2+ metal using an adsorption method that uses red dragon fruit peel as a biosorbent. The objectives of this study were to determine the characteristics of the functional groups of activated charcoal from red dragon fruit peel before and after activation through FTIR testing, the degree of crystallinity through XRD testing, the optimum conditions for pH and contact time variations, and the adsorption isotherm patterns used in adsorbing Pb2+ metal. The production of biosorbents was carried out through carbonization and activation processes using NaOH activator. XRD characterization results on red dragon fruit peel powder showed a mixed structure between a dominant amorphous phase characterized by broad peaks and a semi-crystalline phase indicated by several sharp peaks, especially at an angle of 2

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