Article Per Year (5 Year)
p-Index From 2020 - 2025
1.554
P-Index
This Author published in this journals
All Journal Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia PENA SAINS Al-Kimia Indonesian Journal of Pure and Applied Chemistry Fullerene Journal of Chemistry Jurnal Abdi Insani Jurnal Inovasi Pendidikan dan Sains CHEDS: Journal of Chemistry, Education, and Science
Mustapa Mustapa
Jurusan Kimia, Universitas Negeri Manado, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Social Sciences

Published : 9 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 9 Documents
Search

 1 
Polimer Bercetakan Molekul sebagai Adsorben Zat Warna Metilen Biru Mustapa Mustapa; Muhammad Ali Zulfikar
Jurnal Kimia Fullerene Vol 8 No 1 (2023): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v8i1.497

Abstract

Polimer bercetakan molekul adalah salah satu jenis material polimer sintetis yang punya kemampuan pengenalan spesifik pada molekul target. Jika dibanding dengan jenis adsorben yang biasa digunakan misalnya karbon aktif, polimer bercetakan molekul punya selektivitas lebih tinggi, serta pemakaian kembali yang lebih besar. Pada penelitian ini telah dilakukan pembuatan polimer bercetakan molekul untuk adsorpsi zat warna metilen biru dengan mengaplikasikan pada larutan dengan berbagai variasi pH dan waktu adsorpsi. Hasil pengujian diperoleh bahwa pH kondisi larutan yang paling baik untuk proses adsorpsi yaitu pada pH 10 dengan persentase penyerapan sebesar 99,07 %, sedangkan waktu penyerapan yang paling optimal pada saat 90 menit dengan mencapai persentase penyerapan sebesar 94,20 %.
EFFECT OF POTASSIUM HYDROXIDE CONCENTRATION AS A CATALYST ON THE YIELD OF COCONUT OIL (Cocos nucifera) TRANSESTERIFICATION Chaleb Paul Maanari; Sanusi Gugule; Feti Fatimah; Aisyiah Restutiningsih Putri Utami; Mustapa Mustapa; Stefan Marco Rumengan; Miftahul Jannah; Jakub Saddam Akbar; Djois Sugiaty Rintjap
Indonesian Journal of Pure and Applied Chemistry Vol 6, No 3 (2023)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v6i3.65513

Abstract

Research has been carried out on the effect of potassium hydroxide catalyst concentration on the yield of coconut oil (Cocos nucifera) transesterification and continued to characterize the reaction results. The concentration of potassium hydroxide used was 1, 2, and 3% by weight of coconut oil with ethanol as the reactant. The data processing used was the one-way analysis of variation and its characterization from a physicochemical perspective, followed by the analysis of gas chromatography-mass spectroscopy (GCSM) and infrared spectrophotometry. Based on the data processing results, potassium hydroxide concentrations of 1, 2, and 3% did not affect the yield of the transesterification reaction of coconut oil, and the results were 74.5264%, 71.9330%, and 69.0420%. The characterization results show that the physicochemical properties of the reaction products, such as acid number, density, and viscosity, comply with the Indonesian National Standard (SNI) for biodiesel. The results of the GCMS analysis showed that nine peaks were dominated by ethyl laurate.
Pengaruh Ion Pengganggu terhadap Adsorpsi Metilen Biru Mustapa Mustapa
Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Vol 24, No 2 (2023): CHEMICA
Publisher : Jurusan Kimia FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/chemica.v24i2.56449

Abstract

ABSTRAKPenelitian ini bertujuan untuk mengetahui pengaruh ion pengganggu pada adsorpsi metilen biru menggunakan polimer bercetakan molekul. Ion pengganggu yang digunakan adalah ion Cd2+ dan Pb2+ dengan konsentrasi masing-masing 0, 10, 20, 30, 40, 50 mg/L. Adsorben polimer bercetakan molekul sebanyak 0,05 g dikontakkan dalam 25 mL campuran larutan metilen biru 100 ppm pada pH larutan 10 selama 60 menit dan larutan ion Cd2+ dan Pb2+ dengan variasi konsentrasi 0 – 50 mg/L. Campuran disentrifugasi kemudian filtratnya ditampung. Konsentrasi metilen biru yang tersisa ditentukan menggunakan spektrofotometer sinar tampak (UV-Vis). Kapasitas adsorpsi metilen biru dengan ion pengganggu Cd2+ konsentrasi 0 – 50 mg/L adalah 42,62 – 38,90 mg/g dan ion pengganggu Pb2+ konsentrasi 0 – 50 mg/L adalah 42,72 – 37,79 mg/g. Semakin besar konsentrasi ion pengganggu Cd2+ dan Pb2+ dalam larutan campuran, semakin kecil kapasitas adsorpsi namun tidak signifikan. Hasil penelitian menunjukkan bahwa semakin besar konsentrasi ion pengganggu, kapasitas adsorpsi metilen biru menggunakan polimer bercetakan molekul cenderung konstan.Kata Kunci: Polimer Bercetakan Molekul, Metilen Biru, Adsorpsi, Ion Pengganggu.ABSTRACTThis study aims to determine the effect of interfering ions on the adsorption of methylene blue using molecularly imprinted polymers. The interfering ions used were Cd2+ and Pb2+ ions with concentrations of 0, 10, 20, 30, 40, 50 mg/L, respectively. 0.05 g of molecularly imprinted polymer adsorbent was contacted in 25 mL of a mixture of 100 ppm methylene blue solution at pH 10 for 60 minutes and Cd2+ and Pb2+ ions with concentration variations of 0 – 50 mg/L. The mixture was centrifuged and then the filtrate was collected. The remaining concentration of methylene blue was determined using a visible spectrophotometer (UV-Vis). Methylene blue adsorption capacity with Cd2+ interfering ion concentrations of 0 – 50 mg/L was 42.62 – 38.90 mg/g and Pb2+ interfering ion concentrations of 0 – 50 mg/L was 42.72 – 37.79 mg/g. The greater concentration of interfering ions Cd2+ and Pb2+ in the mixed solution, the lower adsorption capacity but not significantly. The results showed that the greater concentration of interfering ions, the adsorption capacity of methylene blue using molecularly imprinted polymers tended to be constant. Key Words: Molecularly Imprinted Polymers, Methylene Blue, Adsorption, Interfering Ions.
The Effect of Cellulose Succinate Concentration on the Mechanical Properties of Bioplastics Jannah, Miftahul; Mustapa; Utami, Aisyiah Restutiningsih Putri; Papriani, Nada Pertiwi
Al-Kimia Vol 11 No 2 (2023): DESEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v11i2.41287

Abstract

The principle of bioplastic film formation is based on hydrogen bonds between the constituent molecules of bioplastics. The addition of carboxylic groups to cellulose molecules into cellulose succinate (CS) can increase bond regularity so that it has an impact on the mechanical properties of bioplastics. The purpose of this study was to determine the effect of CS concentration on tensile strength and elongation of bioplastics. The stages of this research are the synthesis of bioplastics by mixing method and variation of CS concentration, characterization of bioplastics to determine the effect of CS concentration on the mechanical properties of bioplastics, analysis of functional groups with FTIR and bond regularity with XRD. The results obtained in this study are CS concentration affects the characteristics of bioplastics. The best bioplastic was found at 3.2% CS concentration with a tensile strength value of 10.48 MPa and elongation of 4.38%. The peaks that appear on FTIR analysis are typical groups on cellulose, namely O-H, C-H and C-O. CS bioplastics also consist of amorphous and crystalline phases.
THE INFLUENCE OF HEAVY METALS ON THE ABSORPTION OF CATIONIC DYES Mustapa Mustapa; Aisyiah Restutiningsih Putri Utami; Chaleb Paul Maanari; Miftahul Jannah; Stefan Marco Rumengan
JURNAL PENA SAINS Vol 11, No 1 (2024): Jurnal Pena Sains
Publisher : Program Studi Pendidikan IPA, Fakultas Ilmu Pendidikan, Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jps.v11i1.24999

Abstract

Cationic dyes are dyes containing amine derivatives that can be used on cellulose, protein, nylon, acrylic and synthetic fibers but these dyes are less fast in coloring. This study investigates the impact of Pb2+ heavy metal ions on cationic dye absorption utilizing molecularly imprinted polymers as adsorbents. Concentrations of Pb2+ ranging from 0 to 50 mg/L were examined. In a one-hour interaction, 50 mg of adsorbent was introduced into a solution containing 100 ppm methylene blue dye and Pb2+ with varying concentrations. Following centrifugation, the filtrate was collected, and dye concentration was measured using a visible light spectrophotometer. The sorption capacity of the dye with Pb2+ reached 41.22 mg/g at the highest concentration and 35.83 mg/g at the lowest. Notably, an inverse relationship was observed between Pb2+ concentration and absorption capacity, indicating a decrease as metal ion concentration increased, though stability was maintained. These findings contribute valuable insights into the nuanced dynamics of heavy metal ions and cationic dye absorption, shedding light on potential applications of molecularly imprinted polymers as effective adsorbents.
IDENTIFIKASI GUGUS FUNGSI ABU GUNUNG RUANG, SULAWESI UTARA, INDONESIA Utami, Aisyiah Restutiningsih Putri; Kumajas, Jenny; Mustapa, Mustapa; Berutu, Tania Fransiska; Sidhabukke, Indah Utari; Rauhe, Gilliant Meiralda
CHEDS: Journal of Chemistry, Education, and Science Vol 8, No 2 (2024)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v8i2.10109

Abstract

Indonesia, negara kepulauan dengan banyak gunung berapi, adalah rumah bagi Gunung Ruang, yang terletak di Kabupaten Tagulandang, Provinsi Sulawesi Utara. Penelitian ini bertujuan untuk mengidentifikasi gugus fungsi yang terdapat pada abu letusan Gunung Ruang pada Mei 2024. Identifikasi gugus fungsi pada abu vulkanik menggunakan spektroskopi FT-IR pada rentang bilangan gelombang 4000-400 cm⁻¹. Persiapan sampel melibatkan sintesis fisik menggunakan metode top-down, diikuti dengan analisis FT-IR. Hasil FT-IR menunjukkan gugus fungsi dominan pada sampel abu. Penelitian menunjukkan pita serapan yang kuat pada 509 cm⁻¹, menunjukkan adanya gugus lentur siloksan (Si-O-Si), dan pada 1784 cm⁻¹, menunjukkan adanya ikatan C=O. Puncak yang teramati pada 2362 cm⁻¹, berhubungan dengan peregangan C=O pada CO₂, dan intensitas yang kuat pada 3371 cm⁻¹, menunjukkan vibrasi hidroksil (OH) pada gugus silanol (Si-OH). Kesimpulannya, analisis FT-IR mengidentifikasi senyawa silika (SiO₂) pada sampel abu vulkanik Gunung Ruang.
Design and Construction of A Pyrolysis Device for Laboratory-scale Liquid Smoke Production Applications Jannah, Miftahul; Saiya, Abdon; karundeng, Marlina; Tengker, Soenandar milian T; Kamaruddin, Kamaruddin; mustapa, Mustapa
Jurnal Kimia Fullerene Vol 10 No 1 (2025): Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v10i1.695

Abstract

Asap cair telah banyak diaplikasikan diberbagai bidang. Beberapa penelitian banyak yang mengembangkan metode, alat dan bahan pembuatan asap cair. Penelitian ini bertujuan untuk merancang alat pembuatan asap cair dengan metode pirolisis yang sederhana dalam skala laboratorium. Sasarannya adalah alat ini dapat digunakan oleh mahasiswa untuk praktikum agar semakin menambah wawasan dan keterampilan mahasiswa tentang asap cair. Adapun tahapan penelitian ini adalah dimulai dari studi literatur, desain teknologi, fabrikasi dan pengujian alat serta tahap evaluasi. Hasil yang diperoleh dalam penelitian ini adalah alat pirolisis asap cair telah berhasil dibuat dengan kapasitas 6 kg. berdasarkan hasil pengujian dihasilkan asap cair jenis grade 3.
PENGOLAHAN JERAMI PADI MENJADI BIOCHAR PEMBENAH TANAH UNTUK MENDUKUNG PERTANIAN BERKELANJUTAN PADA KELOMPOK TANI DIAT I, BOLAANG MONGONDOW Jannah, Miftahul; Mustapa, Mustapa; Hasmiati, Hasmiati; Pieter, Nathaniel Dave Emmanuel; Mandias, Praisy
Jurnal Abdi Insani Vol 12 No 8 (2025): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v12i8.2829

Abstract

The abundant agricultural waste in agricultural areas is generally not optimally utilized and tends to be burned, resulting in environmental pollution and the loss of potential organic matter. The Diat I Farmers Group is one of the farmer groups facing this problem, where post-harvest rice straw is not processed and soil fertility is decreasing due to dependence on chemical fertilizers. This Community Service (PKM) activity aims to improve farmers' knowledge and skills in processing rice straw into biochar as a soil conditioner. The target partners for this activity are 15 Diat I Farmers Groups. The activity method is carried out through three main stages: problem identification through observation and interviews with farmers, solution design through appropriate technology training, and technical implementation in the field. This activity produces rice straw biochar produced using a simple kon-tiki tube pyrolysis tool. Overall, there was a 51% increase in participants' understanding and skills regarding biochar materials, their benefits, and how to make it.
Development of Basic Chemistry Lab Work Module as Science Process Skills Assessment Aisyiah Restutiningsih Putri Utami; Mustapa Mustapa; Chaleb Paul Maanari; Stefan Marco Rumengan; Jakub Saddam Akbar; Musma Rukmana
Jurnal Inovasi Pendidikan dan Sains Vol 6 No 1 (2025): April
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/jips.v6i1.2434

Abstract

In this research, a lab work module daily life base has been successfully developed in the basic chemistry 1 lab work. This module was created to make practicum implementation easier in the chemistry laboratory due to limited tools and materials. This research aims to assess students' science process skills. The lab work module development process uses the ADDIE model research approach. After that, the validation tests carried out were media experts and material experts, each consisting of two experts, and average validation test scores for material and media experts were found to be 4.67 and 4.54, respectively. These results indicate that the module is suitable for use as a learning resource. The next step was to test its practicality and effectiveness using pretest and posttest instruments, students' score results, and questionnaires. Data analysis was carried out using descriptive statistical methods and the results obtained were that the module was suitable and practical for use as a learning resource with a practicality percentage of 89.47%. Furthermore, the student's learning completion results were 100% and the N-Gain value was 0.71, which proves that the module created is effective. In conclusion, the product that has been developed is successful in improving students' science process skills.
Co-Authors Abdon Saiya Aisyiah Restutiningsih Putri Utami Berutu, Tania Fransiska Chaleb Paul Maanari Djois Sugiaty Rintjap Feti Fatimah Hasmiati Hasmiati Jakub Saddam Akbar Jenny Kumajas Kamaruddin Kamaruddin Mandias, Praisy Marlina Karundeng Miftahul Jannah Miftahul Jannah Muhammad Ali Zulfikar Musma Rukmana Nada Pertiwi Papriani Pieter, Nathaniel Dave Emmanuel Rauhe, Gilliant Meiralda Sanusi Gugule Sidhabukke, Indah Utari Stefan Marco Rumengan Tengker, Soenandar Millian Tompunu