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Adsorpsi Ion Logam Tembaga Menggunakan Nano Zeolit Alam yang Diaktivasi Yulianis Yulianis; Mahidin Mahidin; Syaifullah Muhammad
Jurnal Litbang Industri Vol 7, No 1 (2017)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

This study was aimed to find out the ability of natural zeolite coming from Blang Pidie, South West Aceh District, Aceh Province, Indonesia, which was applied as an adsorbent to adsorp heavy metal copper (Cu²⁺) ions in aqueous solution. This research was conducted to enhance the performance of natural zeolite by downsizing it to nano particles, then activated physically and chemically using 0.05 M HCl, then calcined at temperature 350°C for 2 hours. Test of Cu²⁺ metal ion adsorption to nano natural zeolite after activation was done by batch method to determine the effect of contact time, weight of the adsorbent, pH, and initial concentration. The results showed that the optimum adsorption at the initial concentration 38.998 mg/L, weight adsorbent 1 gram, pH 6 during 120 minutes of the contact time with the percentage metal ion Cu²⁺ adsorption up to 99.86% and adsorption capacity 7.789 mg/g. Isothermal adsorption ressembled with the isotherms Freundlich with the R² value of 0.9685, Freundlich constants (Kf) 111.99 mg/g and n value 0.986. The kinetic studies indicated that the adsorption of metal ions Cu²⁺ could be described by pseudo second order kinetic model with linear regression value 0.9997 and a constant value 0.121 min-1.ABSTRAK Penelitian ini bertujuan untuk melihat kemampuan zeolit alam yang berasal dari Blang Pidie, Kabupaten Aceh Barat Daya, Provinsi Aceh, Indonesia yang diaplikasikan sebagai adsorben untuk menyerap ion logam berat tembaga (Cu²⁺) dalam larutan. Penelitian dilakukan dengan peningkatan unjuk kerja zeolit alam melalui pengecilan ukuran sampai nano partikel, selanjutnya diaktivasi fisika dan aktivasi kimia menggunakan HCl 0,05 M kemudian dikalsinasi pada temperatur 350 oC selama 2 jam. Uji adsorpsi ion logam Cu²⁺ terhadap nano zeolit alam setelah aktivasi dilakukan dengan metode batch untuk menentukan pengaruh waktu kontak, berat adsorben, pH, dan konsentrasi awal. Hasil penelitian menunjukkan adsorpsi optimum pada konsentrasi awal 40 mg/L, berat adsorben 1 gram, pH 6 selama waktu kontak 120 menit dengan persen ion logam Cu²⁺ yang terserap sebesar 99,86% dan kapasitas adsorpsi sebesar 7,789 mg/g. Isotermal adsorpsi menyerupai isoterm Freundlich dengan nilai R² 0,9685, konstanta Freundlich (Kf) sebesar 111,99 mg/g dan nilai n sebesar 0,986. Studi kinetika menunjukkan bahwa adsorpsi ion logam Cu²⁺ mengikuti model kinetika orde dua semu dengan nilai regresi linier 0,9997 dan nilai konstanta 0,121 min-1.

Adsorpsi Ion Logam Tembaga Menggunakan Nano Zeolit Alam yang Diaktivasi Yulianis Yulianis; Mahidin Mahidin; Syaifullah Muhammad
Jurnal Litbang Industri Vol 7, No 1 (2017)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

This study was aimed to find out the ability of natural zeolite coming from Blang Pidie, South West Aceh District, Aceh Province, Indonesia, which was applied as an adsorbent to adsorp heavy metal copper (Cu²⁺) ions in aqueous solution. This research was conducted to enhance the performance of natural zeolite by downsizing it to nano particles, then activated physically and chemically using 0.05 M HCl, then calcined at temperature 350°C for 2 hours. Test of Cu²⁺ metal ion adsorption to nano natural zeolite after activation was done by batch method to determine the effect of contact time, weight of the adsorbent, pH, and initial concentration. The results showed that the optimum adsorption at the initial concentration 38.998 mg/L, weight adsorbent 1 gram, pH 6 during 120 minutes of the contact time with the percentage metal ion Cu²⁺ adsorption up to 99.86% and adsorption capacity 7.789 mg/g. Isothermal adsorption ressembled with the isotherms Freundlich with the R² value of 0.9685, Freundlich constants (Kf) 111.99 mg/g and n value 0.986. The kinetic studies indicated that the adsorption of metal ions Cu²⁺ could be described by pseudo second order kinetic model with linear regression value 0.9997 and a constant value 0.121 min-1.ABSTRAK Penelitian ini bertujuan untuk melihat kemampuan zeolit alam yang berasal dari Blang Pidie, Kabupaten Aceh Barat Daya, Provinsi Aceh, Indonesia yang diaplikasikan sebagai adsorben untuk menyerap ion logam berat tembaga (Cu²⁺) dalam larutan. Penelitian dilakukan dengan peningkatan unjuk kerja zeolit alam melalui pengecilan ukuran sampai nano partikel, selanjutnya diaktivasi fisika dan aktivasi kimia menggunakan HCl 0,05 M kemudian dikalsinasi pada temperatur 350 oC selama 2 jam. Uji adsorpsi ion logam Cu²⁺ terhadap nano zeolit alam setelah aktivasi dilakukan dengan metode batch untuk menentukan pengaruh waktu kontak, berat adsorben, pH, dan konsentrasi awal. Hasil penelitian menunjukkan adsorpsi optimum pada konsentrasi awal 40 mg/L, berat adsorben 1 gram, pH 6 selama waktu kontak 120 menit dengan persen ion logam Cu²⁺ yang terserap sebesar 99,86% dan kapasitas adsorpsi sebesar 7,789 mg/g. Isotermal adsorpsi menyerupai isoterm Freundlich dengan nilai R² 0,9685, konstanta Freundlich (Kf) sebesar 111,99 mg/g dan nilai n sebesar 0,986. Studi kinetika menunjukkan bahwa adsorpsi ion logam Cu²⁺ mengikuti model kinetika orde dua semu dengan nilai regresi linier 0,9997 dan nilai konstanta 0,121 min-1.

Impact of Pyrolysis Temperature and Jatropha Seed Adhesive on the Properties of Bio-charcoal from Young Coconut Waste Khairul Anwar; Mahidin Mahidin; Ichwana Ramli; Muhammad Faisal; Agustami Sitorus
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1372-1382

This study assesses the characteristics of bio-charcoal from young coconut waste with the effect of variations in pyrolysis temperature and the addition of Jatropha seed adhesive. The physical and chemical parameters of bio- charcoal from three temperature variation treatments (380°C, 430°C, and 480°C) and three adhesive concentrations (15%, 20%, and 25%) were analyzed, including moisture content, ash content, volatile matter, calorific value and fixed carbon. In addition, the application of ANOVA and DMRT were used to evaluate the significant differences between the various treatments with significant p-value ≤ 5%. The optimal result was obtained at temperature of 430°C and 25% adhesive indicating a calorific value of 6421 cal/g, moisture content of 6.1%, ash content of 7.6% volatile matter of 7.7% and fixed carbon of 78.7%. The findings reveal that adhesive content significantly affects bio-charcoal quality, while temperature variations influence moisture content and heating value. This study concludes that optimizing temperature and adhesive concentrations can yield high-quality bio-charcoal, offering a cleaner, sustainable source. Keywords: Adhesive, DMRT, Jatropha curcas, Pyrolysis, Young coconut waste.

Pelatihan dam implementasi eko enzim mendukung pertanian ramah lingkungan memitigasi ketahanan pangan di Pesantren Al Kautsar, Medan Ameilia Zuliyanti Siregar; Zulkifli Nasution; Meutia Nauly; Tulus Tulus; Netti Herlina Siregar; Ichwana Ramli; Mahidin Mahidin; Nasrul Nasrul; Indera Sakti Nasution; Melinda Melinda; Muhibuddin Muhibuddin
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 9, No 5 (2025): September
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v9i5.34006

Abstrak Kegiatan Pengabdian masyarakat Kolaborasi Indonesia (PMKI) USU 2025 sebagai co-host dengan host Universitas Syiah Kuala (USK) ini dilaksanakan di Pondok Pesantren Al Kautsar Al Akbar, Medan, dengan tujuan meningkatkan pengetahuan dan keterampilan santri dalam mengolah sampah organik menjadi ekoenzim sebagai produk ramah lingkungan yang bermanfaat. Metode yang digunakan adalah Asset Based Community Development (ABCD) melalui tahapan discovery, dream, design, define, dan destiny. Pelaksanaan meliputi Sosialisasi, Pelatihan pembuatan ekoenzim, pembuatan desinfektan berbahan ekoenzim, serta implementasinya pada kegiatan berkebun. Sebanyak 40 santri (15 putra dan 25 putri, rentang usia 14-17 Tahun, santri dari kelas 1, 2, 3 SMA) yang mengikuti kegiatan, diawali dengan pre-test dan diakhiri dengan post-test. Hasil evaluasi menunjukkan peningkatan pemahaman signifikan, dengan rata-rata nilai pre-test 65,25 dan post-test 93,5. Sebanyak 95% peserta menyatakan kegiatan sangat menarik, 93% menyatakan bermanfaat, dan 89% menyatakan pemahamannya meningkat. Kegiatan ini berhasil membekali santri dengan keterampilan pengolahan sampah organik menjadi produk bernilai guna dalam bentuk eko enzim yang mendukung pertanian ramah lingkungan dan mitigasi masalah ketahanan pangan di lingkungan pesantren. Kata kunci: ekoenzim; pengolahan sampah organik; pertanian ramah lingkungan; pengabdian masyarakat. Abstract The Indonesian Collaboration Community Service (ICCS) of University Sumatera Utara Programme 2025 as co-hosy qith host was University Syiah Kuala (USK) was conducted at Pondok Pesantren Al Kautsar Al Akbar, Medan, aiming to enhance students’ knowledge and skills in processing organic waste into eco-enzyme, an environmentally friendly and beneficial product. The program adopted the Asset Based Community Development (ABCD) method through five stages: discovery, dream, design, define, and destiny. Activities included awareness sessions, eco-enzyme production training, eco-enzyme-based disinfectant preparation, and its application in gardening activities. A total of 40 students (15 males and 25 females, age rates was 14-17 years old, consit of 1, 2, 3 SMA students), starting with a pre-test and ending with a post-test. Evaluation results indicated a significant improvement in understanding, with average pre-test and post-test scores of 65.25 and 93.5, respectively. Furthermore, 95% of participants stated the program was very interesting, 93% found it beneficial, and 89% reported increased comprehension. This program successfully equipped students with skills in organic waste processing into value-added products, while supporting environmentally friendly agriculture and contributing to food security resilience in the pesantren environment. Keywords: eco-enzyme; organic waste processing; community service; environmentally friendly agriculture.

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