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All Journal IJCER (International Journal of Chemistry Education Research) Jurnal Abdimas Madani dan Lestari (JAMALI) IJCR (Indonesian Journal of Chemical Research)
Gani Purwiandono, Gani
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Environmental Science Materials Science & Nanotechnology Other

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Enhancing Learning Interest in the Collaborative Learning Practitioner Lecture: Training on Determining the Viscosity of Palm Kernel Oil (PKO) Aminati, Salmah; Purwiandono, Gani
IJCER (International Journal of Chemistry Education Research) VOLUME 8, ISSUE 2, OCTOBER 2024
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcer.vol8.iss2.art10

Abstract

This study aims to determine the effects in physical chemistry class with the workshop sessions on measuring PKO viscosity by CV. Bina Agro Mandiri. The effects are evaluated through the enhancing of student's learning interest in the Physical Chemistry II class in Chemistry Program of the Islamic University of Indonesia, which presents a good avenue for this investigation. The study was conducted by classroom, practical and online action. The data were analyzed using a pie chart. Findings showed that the implementation of the practical was able to increase the student's learning interests. Through case analysis tasks, students participate significantly in the teaching-learning process.
Synthesis of Rice Husk-Based Biocomposites Coated with Sodium Alginate and Their Use in Congo Red Dye Adsorption Purwiandono, Gani; lestari, puji; Egi Saputra, Noventa
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Vol. 9 No. 2 (2024): Volume 9, ISSUE 2,2024
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol9.iss2.art11

Abstract

In this study, synthesis of a sodium alginate-coated rice husk-based biocomposite as a substitute adsorbent to lessen the negative impacts of congo red dye was conducted. A calcium chloride (CaCl2) solution was used in the sonication and encapsulation processes to produce the biocomposite material. X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Fourier Transform Infrared (FTIR) Spectroscopy were used to characterize the biocomposite material. Adsorption experiments showed that the optimum pH was 3 and the dye concentration was varied between 10 and 50 ppm and adsorbent mass between 0.05 and 1.5 grams. Adsorption kinetics followed the pseudo-second-order linear model, while the adsorption isotherm model matched the Freundlich model. According to these results, biocomposites of rice husk and sodium alginate have a potential to be an environmental-friendly way to manage the textile waste.
Pelatihan Budidaya Magot sebagai Solusi Pengelolaan Sampah Organik Berbasis Komunitas di Desa Gadingsari: Indonesia Purwiandono, Gani; Safitri, Indah; Kania Chairunisa Hamdani, Kanza
Jurnal Abdimas Madani dan Lestari (JAMALI) Volume 07, Issue 02, September 2025
Publisher : UII

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jamali.vol7.iss2.art21

Abstract

Household organic waste management remains a major challenge in Gadingsari Village, Sanden District, Bantul Regency. Due to low awareness and limited use of waste processing technologies, residents often burn or improperly dispose of organic waste. This community service program aimed to introduce maggot (Black Soldier Fly) cultivation as an innovative, environmentally friendly, and economically beneficial solution. The program was implemented using a Community Based Research (CBR) approach, consisting of four main stages: laying the foundation, planning, information gathering and analysis, and acting on findings. Participatory education and training were conducted to enhance the community’s capacity to manage organic waste as a productive resource. Evaluation results showed an increase in knowledge and skills, along with active community involvement. This initiative is expected to be integrated into the future Waste Processing Facility (TPST 3R) and serve as a replicable model for other villages. Overall, the program contributes to improving environmental quality and promoting sustainable community well-being.
Adsorption Isotherm Studies of Rhodamine B on Citrus sinesis Peel Purwiandono, Gani; Lestari, Puji; Widodo, Wahyu; Marlina, Marlina; Aprilia, Nadia
INDONESIAN JOURNAL OF CHEMICAL RESEARCH VOLUME 2, ISSUE 1-2, 2017
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (203.184 KB) | DOI: 10.20885/ijcr.vol2.iss1.art6

Abstract

Adsorption of Rhodamine B on Citrus sinesis peel biosorbent has been conducted. The adsorption process was carried out in neutral pH for 90 min. The active surface of the Citrus sinesis peel biosorbent was 15 m2/g and the density was 0.52 g/cm3. The adsorption mechanism of Rhodamine B on Citrus sinesis peel biosorbent was studied using 4 adsorption model; Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich. The adsorption fitted the Freundlich model with the regression value of 0.906. This indicates that the adsorption of Rhodamine B on the surface of Citrus sinesis peel biosorbent was a multilayer interaction.
Pengaruh Variasi HA-TCP (Hydroxy Apatit-Tricalcium Pospat) Terhadap Biokomposit (HA:TCP)-Gelatin-CMC Sebagai Injectable Bone Subtitute (IBS) Purwiandono, Gani; Julita, Hera; Saputra, Dita Adi
INDONESIAN JOURNAL OF CHEMICAL RESEARCH VOLUME 3, ISSUE 1, 2018
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (251.147 KB) | DOI: 10.20885/ijcr.vol3.iss1.art4

Abstract

The synthesis of biocomposite (HA:TCP) – Gelatine – CMC for bone filler material has been carried out. In this research, the ratio of HA and TCP was varied as follows: 70:30, 50:50 and 40:60. The decrease of HA and the increase of TCP concentration will decrease the density, increase the percentage of porosity and swelling. The best composition for the synthesis was obtained for sample B with the ratio of HA:TCP = 50:50. For sample B, the synthesized biocomposite has the density of 1.67790 gr/cm3, porosity of 78.64%, tension of 10.14 MPa, swelling ability  46.85% and the sample mass degradation percentage of 8.1 %. The composition used for the biocomposite synthesis in this research was suitable to be applied as bone filler material which needs a dense pores and high tension.
Adsorpsi Logam Cu(II) Menggunakan Adsorben Kulit Buah Salak Teraktivasi HNO3 Purwiandono, Gani; Ibrahim, Suleman
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Volume 7, ISSUE 1, 2022
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol7.iss1.art1

Abstract

Telah dilakukan penelitian sintesis biosorben limbah kulit buah salak sebagai adsorben logam Cu(II). Penelitian ini bertujuan untuk mengetahui kemampuan aktivitas adsorpsi dan isoterm adsorpsi biosorben kulit buah salak terhadap daya adsorpsi logam Cu(II). Dalam penelitian ini, adsorben kulit buah salak yang digunakan terbagi menjadi 2 (dua) yaitu adsorben tanpa aktivasi dan adsorben teraktivasi asam nitrat (HNO3) 0,1 M. Aplikasi adsorben dilakukan pada variasi waktu 30, 60, 90 dan 120 menit. Karakterisasi dan aplikasi menggunakan Fourier Transform Infra-Red (FTIR) dan Atomic Absorption Spectrophotometry (AAS). Hasil uji adsorpsi menunjukkan waktu optimum adsorpsi dicapai pada 30 menit waktu interaksi. Hasil penelitian menunjukkan bahwa biosorben tanpa aktivasi dapat terjadi melalui interaksi kemisorpsi (isoterm Langmuir), sedangkan biosorben teraktivasi terjadi melalui interaksi fisisorpsi (isoterm Freundlich).
Studi Adsorpsi Logam Pb(II) Menggunakan Adsorben Kulit Rambutan Teraktivasi HNO3 dan NaOH Purwiandono, Gani; Haidar, Army Sany
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Volume 7, ISSUE 1, 2022
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol7.iss1.art2

Abstract

Telah dilakukan penelitian tentang adsorpsi logam timbal (Pb) menggunakan adsorben kulit rambutan. Penelitian ini bertujuan untuk mengkaji karakter adsorben kulit rambutan dalam aktivitas adsorpsi logam Pb(II) dan interaksi adsorbat dengan adsorben. Dalam penelitian ini, adsorben kulit rambutan yang digunakan terbagi menjadi 2 (dua) yaitu adsorben non-aktivasi dengan adsorben teraktivasi asam nitrat (HNO3) dan natrium hidroksida (NaOH). Dilakukan uji adsorpsi menggunakan variasi waktu 5, 10, 20, 30 menit. Biosorben dikarakterisasi menggunakan Fourier Transform Infra-Red (FTIR), dan analisis larutan uji menggunakan Atomic Absorption Spectrophotometry (AAS). Hasil uji adsorpsi menunjukkan waktu optimum adsorpsi dicapai pada 5 menit untuk kedua adsorben. Hasil penelitian menunjukkan bahwa biosorben non-aktivasi dapat terjadi melalui interaksi isoterm Langmuir dan isoterm Freundlich, sedangkan biosorben teraktivasi hanya terjadi melalui interaksi fisisorpsi (Isoterm Freundlich).
Co-Authors Aminati, Salmah Aprilia, Nadia Egi Saputra, Noventa Haidar, Army Sany Ibrahim, Suleman Julita, Hera Kania Chairunisa Hamdani, Kanza Marlina Marlina PUJI LESTARI Safitri, Indah Saputra, Dita Adi Wahyu Widodo