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All Journal ALCHEMY Jurnal Penelitian Kimia Jurnal Pemberdayaan: Publikasi Hasil Pengabdian kepada Masyarakat (JPM ITTC )
Fidelis Tertius Aluh Christyawardana
Universitas Kristen Satya Wacana
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Environmental Science Materials Science & Nanotechnology Social Sciences

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Preparasi Karbon Aktif Sekam Padi dan Serbuk Gergaji Kayu Jati melalui Proses Refluks sebagai Adsorben Larutan Multi Ion Fe(II)/Cu(II) Cucun Alep Riyanto; Yohanes Ariesto; Fidelis Tertius Aluh Christyawardana; Yehez Kiel Sandy Pradana; Nicho Vernanda Wina Puspita; Iga Permata Sari; Jose D Michael Yonggulemba; Marturia Ester Tumbelaka; Sarawinda Hutagalung; Fuady Hanief; Wawan Rustyawan
ALCHEMY Jurnal Penelitian Kimia Vol 21, No 1 (2025): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.21.1.92401.104-120

Abstract

Sekam padi dan serbuk gergaji kayu jati merupakan bahan berlignoselulosa yang berpotensi sebagai bahan karbon aktif. Penelitian ini bertujuan untuk menentukan pengaruh proses refluks terhadap karakter karbon aktif sekam padi (RHAC) dan serbuk gergaji kayu jati (TSAC) sebagai adsorben. Sekam padi dan serbuk gergaji kayu jati dikarbonisasi pada suhu 400 °C lalu direfluks menggunakan larutan NaOH 2 N pada suhu 100 °C. Karbon diimpregnasi dengan rasio karbon:H3PO4 1:3 (b/b). Karbon aktif RHAC/TSAC diaplikasikan menjerap multi ion Fe(II)/Cu(II) diikuti studi kinetika dan isoterm adsorpsinya. Hasil penelitian menunjukkan karbon aktif RHAC dan TSAC memiliki gugus aktif O–H, C-H stretching, C≡C, C=C/C=O, C–H, dan P=O dengan dominasi unsur C (~53%) dan O (~48,1%). Karbon aktif TSAC 2321 hasil refluks memiliki luas permukaan terbesar mencapai 49,6795 m²/g. Kajian kinetika adsorpsi multi ion Fe(II)/Cu(II) dengan RHAC dan TSAC mengikuti pemodelan pseudo second order (PSO), sedangkan kajian isoterm adsorpsi multi ion Fe(II)/Cu(II) mengikuti beragam pemodelan seperti Redlich-Peterson, Elovich, dan Jovanovich. Kapasitas adsorpsi terbaik RHAC 232 pada ion Fe(II) dan RHAC 2321 pada ion Cu(II) berturut-turut sebesar 0,3426 mg/g dan 0,4134 mg/g. Karbon aktif TSAC 232 dan 2321 cenderung menjerap ion Cu(II) dengan kapasitas adsorpsi masing-masing sebesar 0,4609 mg/g dan 0,5556 mg/g.Preparation of Activated Carbon from Rice Husk and Teak Sawdust using Reflux Process as Adsorbent for Multi Ion Fe(II)/Cu(II) Solutions. Rice husks and teak wood sawdust are lignocellulosic materials with potential as activated carbon sources. This study aims to determine the effect of the reflux process on the characteristics of RHAC and TSAC as an adsorbent. The rice husk and teak sawdust were carbonized at 400 °C and refluxed using 2 N NaOH solution at 100 °C. The carbon was impregnated using 30% H3PO4 with a carbon: H3PO4 ratio 1:3 (w/w). The RHAC/TSAC was applied to adsorb multi-ions Fe(II)/Cu(II), and its adsorption kinetics and isotherms studies were studied. The results showed that the RHAC and TSAC had O-H, C–H stretching, C≡C, C=C/C=O, C-H, and P=O functional groups with the dominance of C (~53%wt) and O (~48.1%wt) elements. The refluxed TSAC 2321 has the largest surface area of 49.6795 m²/g. The adsorption kinetics study of the Fe(II)/Cu(II) multi-ion using RHAC and TSAC follows the pseudo-second-order (PSO) modeling, while the adsorption isotherm study of the Fe(II)/Cu(II) multi-ion using RHAC and TSAC follows various models such as Redlich-Peterson, Elovich, and Jovanovich. The best adsorption capacity of RHAC 232 on Fe(II) ions and RHAC 2321 on Cu(II) ions is 0.3426 mg/g and 0.4134 mg/g, respectively. The TSAC 232 and 2321 tend to adsorb Fe(II) and Cu(II) ions with an adsorption capacity reaching 0.4609 mg/g and 0.5556 mg/g, respectively.
Pelatihan Pembuatan Sabun Cair Ramah Lingkungan Untuk Peningkatan Ekonomi Kreatif Jemaat Sri Hartini; Dewi Kurnianingsih Arum Kusumahastuti; Margareta Novian Cahyanti; Sarawinda Hutagalung; Fajar Yusuf Arfiyan; Putra Kaysha Qodiriy; Olivier Surya Simonet; Fidelis Tertius Aluh Christyawardana; Firman Emmanuel Declarantius Parulian
Jurnal Pemberdayaan: Publikasi Hasil Pengabdian Kepada Masyarakat Vol. 5 No. 1 (2026): Januari - Juni
Publisher : CV. ITTC INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jpmittc.v5i1.4378

Abstract

The main problems faced by the congregation are limited entrepreneurial skills and the underutilization of creative economic opportunities based on environmentally friendly products, resulting in low additional household income. This community service program aims to improve the knowledge, skills, and economic independence of congregation members through training in the production of environmentally friendly liquid soap with market value. The program was conducted using a participatory training method, including counseling, demonstrations, and hands-on practice. Qualitative descriptive analysis was applied by comparing participants’ knowledge and skills before and after the training and evaluating the products produced. The results show an increase in participants’ understanding of materials and production processes, as well as their ability to produce liquid soap suitable for use and commercialization. Overall, the training has strong potential to support creative economic development and sustainably improve the welfare of the congregation. This initiative encourages long-term entrepreneurship and environmental awareness among participants.
Co-Authors Cucun Alep Riyanto Dewi Kurnianingsih Arum Kusumahastuti Fajar Yusuf Arfiyan Firman Emmanuel Declarantius Parulian Fuady Hanief Iga Permata Sari Jose D Michael Yonggulemba Margareta Novian Cahyanti Marturia Ester Tumbelaka Nicho Vernanda Wina Puspita Olivier Surya Simonet Putra Kaysha Qodiriy Sarawinda Hutagalung Sri Hartini Wawan Rustyawan Yehez Kiel Sandy Pradana Yohanes Ariesto