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All Journal Jurnal Inovasi Teknik Kimia Jurnal Ilmiah Berkala Sains dan Terapan Kimia
Ninik Triayu Susparini
Sekolah Tinggi Analis Kimia Cilegon
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry

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Valorization of Peanut Shell (Arachis hypogeae ) Composited Humic Acid as Bioadsorbent of Heavy Metal Contamination Ninik Triayu Susparini
Jurnal Sains dan Terapan Kimia Vol 19, No 2 (2025)
Publisher : Jurnal Ilmiah Berkala Sains dan Terapan Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jstk.v19i2.22532

Abstract

The problem of organic and industrial waste still be the focus problems in Indonesia, especially in the Cilegon city. In this research, organic waste and peanut shell was valorized into composite bioadsorbent for treated heavy metal contamination. The aim of this research was to create a bioadsorbent composite that is applied to adsorb heavy metals in industrial waste.The compiste bioadsorbent was used as a source of functional groups such as –COOH and -OH phenolics and –OH alcoholates that can be absorb the heavy metals. The adsorption process was carried out by mixing the bioadsorbent with the metal sample saolution for 2h. Characterization was using Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Difraction (XRD), Inductively Coupled Plasma (ICP) and Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDX). Based on the experimental results, the composite bioadsorbent had macro-sized pores which were efficient in adsorbing Pb, Al, and Fe adsorption efficiencies of 66.50%, 36.16%, and 50.96% respectively. The developed composite bioadsorbent has good application prospects in sustainable environmental processing
SYNERGISTIC INTERFACIAL CHEMISTRY OF HUMIC ACID AND ACTIVATED FLY ASH FOR HIGH-PERFORMANCE Mn²⁺ ADSORPTION Ninik Triayu Susparini; Alamsyah Sultan Ramadhan; Lusi Aferta; Marlon Jusak Renaldy Benu; Sri Wijayanti; Ali Tantowi
Jurnal Inovasi Teknik Kimia Vol. 11 No. 1 (2026): JANUARI | INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v10i4.14706

Abstract

This study developed a hybrid adsorbent derived from activated fly ash (FA) and humic acid (HA) for effective Mn²⁺ removal from aqueous solutions. Fly ash was activated using 1 M NaOH to increase its surface hydroxyl groups (≡Si–OH and ≡Al–OH) and enhance reactivity. The activated FA was then composited with HA, which contains abundant –COOH and –OH groups, forming an inorganic–organic hybrid with improved adsorption capability. The HA–FA composite with a 1:3 mass ratio exhibited the highest Mn²⁺ removal efficiency of 98.80% after 120 minutes, significantly outperforming both HA and FA individually. FTIR analysis confirmed the formation of Si–O–C and Al–O–C linkages, indicating strong chemical interactions between the mineral and organic phases. Statistical analysis (Shapiro–Wilk, Levene, and ANOVA; p < 0.05) demonstrated that both adsorbent composition and contact time significantly influenced the adsorption efficiency. Overall, the HA–FA hybrid represents a low-cost, sustainable, and high-performance adsorbent capable of efficiently removing heavy metals from wastewater, providing a promising approach for transforming industrial and natural wastes into functional environmental materials
Co-Authors Alamsyah Sultan Ramadhan Ali Tantowi Lusi Aferta Marlon Jusak Renaldy Benu Sri Wijayanti