Garuda - Garba Rujukan Digital

Mahidin Mahidin

Universitas Syiah Kuala

Author-ID : 3057232

Agriculture, Biological Sciences & Forestry Chemistry Engineering Industrial & Manufacturing Engineering

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Articles

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.

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