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All Journal Indonesian Journal of Community Empowerment and Service Jurnal Katalisator
Etriyanto Arman
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Agriculture, Biological Sciences & Forestry Humanities Chemistry Education Social Sciences Other

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ADSORPTION STUDY OF LEAD (Pb²⁺) IONS USING CASSAVA PEEL BIOCHAR: EFFECT OF pH AND CONTACT TIME Elfia, Mega; Etriyanto Arman; Eduwin Saputra; Alfin Surya; Yoravika Dwiwibangga; Vicka Andini; Aidil Onasis; Nadya Br Debora
JURNAL KATALISATOR Vol. 10 No. 2 (2025): Jurnal Katalisator, Volume 10 No 2 Oktober 2025
Publisher : LLDIKTI X Sumbar, Riau, Jambi, Kepri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62769/katalisator.v10i2.3484

Abstract

This study evaluates the adsorption performance of NaOH-activated cassava peel biochar (Manihot esculenta Crantz) for the removal of Pb²⁺ ions from aqueous solutions, with particular focus on the effects of solution pH and contact time. Cassava peel biochar was produced via pyrolysis at 180–350 °C and chemically activated using 0.1 M NaOH. Surface functional groups and morphology were characterized using Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy–Energy Dispersive X-ray (SEM–EDX). Batch adsorption experiments were conducted by varying solution pH (3–8) and contact time (30–120 min), while Pb²⁺ concentrations before and after adsorption were analyzed using Atomic Absorption Spectroscopy (AAS). The results showed that solution pH significantly affected Pb²⁺ adsorption, with the highest adsorption capacity of 9.94 mg/g achieved at pH 5. Contact time also influenced adsorption performance, and the optimum condition was obtained at 90 min, yielding a maximum adsorption capacity of 9.94 mg/g. These findings indicate that NaOH-activated cassava peel biochar exhibits stable and effective Pb²⁺ adsorption under slightly acidic conditions and moderate contact time, highlighting its potential as a low-cost and environmentally friendly adsorbent for Pb²⁺ removal from contaminated wastewater.
Pelatihan Pembuatan Permen Jelly Jeruk Kalamansi di Desa Panca Mukti Sebagai Imunomodulator Dominica, Dwi; Handayani, Dian; Yona Harianti Putri; Etriyanto Arman; Denty Safitri; Mutia Annisa Putri Pin Saadin; Susan Jaya Mutiara M Nur; Elsya Agustina; Lathifa Olivia Adeshi; Amanda Gusti Fatika
Indonesian Journal of Community Empowerment and Service (ICOMES) Vol. 5 No. 2 (2025): December 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/icomes.v5i2.44735

Abstract

Kegiatan pengabdian kepada masyarakat ini dilatarbelakangi oleh Desa Panca Mukti yang memiliki akses dekat terhadap perkebunan jeruk kalamansi tetapi pemanfaatannya masih terbatas, padahal buah ini kaya vitamin C dan berpotensi sebagai imunomodulator alami. Masyarakat setempat, khususnya ibu-ibu PKK, membutuhkan inovasi olahan berbasis bahan lokal yang tidak hanya meningkatkan kesehatan tetapi juga memiliki nilai ekonomi. Oleh karena itu, kegiatan ini bertujuan memperluas pengetahuan dan meningkatkan keterampilan masyarakat dalam mengolah jeruk kalamansi menjadi permen jelly herbal sebagai produk nutrasetikal peningkat daya tahan tubuh. Pelatihan dilaksanakan selama dua jam (10.00–12.00 WIB) dan diikuti oleh 26 peserta melalui penyampaian materi edukatif serta praktik langsung. Evaluasi dilakukan melalui pre-test dan post-test. Hasil evaluasi menunjukkan peningkatan signifikan pada tingkat pemahaman peserta dengan rata-rata skor pre-test sebesar 74,58% dan post-test meningkat menjadi 95,36%. Kegiatan ini memberikan dampak positif berupa peningkatan pengetahuan, keterampilan, serta munculnya peluang pemanfaatan potensi lokal menjadi produk fungsional dan bernilai ekonomis. Selain mendorong inovasi masyarakat, kegiatan ini juga berkontribusi pada upaya peningkatan kesehatan preventif melalui pemanfaatan bahan alam lokal yang bersifat imunomodulator.
Co-Authors Aidil Onasis Alfin Surya Amanda Gusti Fatika Denty Safitri Dian Handayani Dominica, Dwi Eduwin Saputra Elsya Agustina Lathifa Olivia Adeshi Mega Elfia Mutia Annisa Putri Pin Saadin Nadya Br Debora Susan Jaya Mutiara M Nur Vicka Andini Yona Harianti Putri Yoravika Dwiwibangga