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All Journal Jurnal Teknoin BERKALA SAINSTEK Seminar Nasional Teknik Kimia Kejuangan IJCER (International Journal of Chemistry Education Research) Indonesian Journal of Life Cycle Assessment and Sustainability Refleksi Pembelajaran Inovatif ASEAN Journal of Chemical Engineering Dinamika Kerajinan dan Batik : MAJALAH ILMIAH Prosiding Seminar Nasional Rekayasa dan Teknologi (TAU SNAR- TEK)
Sholeh Ma’mun
Universitas Islam Indonesia
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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PENGGUNAAN MEMBRAN KITOSAN UNTUK MENURUNKAN KADAR LOGAM KROM PADA LIMBAH INDUSTRI PENYAMAKAN KULIT Sholeh Ma’mun; Marhaenia Theresa; Sarah Alfimona
Teknoin Vol. 22 No. 5 (2016)
Publisher : Faculty of Industrial Technology Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknoin.vol22.iss5.art6

Abstract

Membrane made of chitosan from shrimp shell can be used to reducea heavy metal chromium (Cr) content in leathertanning industry waste by adsorption. The membranes were manufactured from chitosan with concentrations of 2, 3, and 4wt%, respectively. In addition, glycerol was added during membrane manufacturing as an additive to increase the permeability properties. The results showed that themembrane with 2% chitosan without glycerol gave the best adsorption performance. However, increased the chitosan concentration showed a negative effect to the membrane performance in adsorbing the chromium due to chitosan solubility limitation in the acetic acid. However, the use of glycerol did not improve the adsorption performance. This was due to hydrophilic property of the glycerol.
PERANCANGAN DAN VALIDASI ALAT PENGUKURAN KONSTANTA DISOSIASI ASAM PADA SUHU 30-70°C Vitro Rahmat; Desi Kurniawan; Sholeh Ma’mun
Teknoin Vol. 22 No. 6 (2016)
Publisher : Faculty of Industrial Technology Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknoin.vol22.iss6.art8

Abstract

The greenhouse effect is caused by increasing emissions of greenhouse gases, e.g. carbon dioxide, in the atmosphere leading to the global warming problem. Thus necessary efforts to reduce the CO2 emissions are required, e.g. amine-based absorption method. Protonation constant is required for the VLE modeling needed in designing absorber and desorber column. For this purpose, an experimental setup was designed to measure alkanolamine protonation constants (pKa). However, the setup needs to be validated by measuring the protonation constants of acetic acid at a range of temperatures from 30 to 70°C. The validation results obtained were in good agreement with the literature data. For example, the pKa of the acetic acid at 30°C is 4.751 and this gives a deviation of 0.18% from the literature data.
PENGUKURAN KONSTANTA DISOSIASI ASAM MONOETHANOLAMINE PADA SUHU 30-60°C Eleonora Amelia; Deasy R. Alwani; Sholeh Ma’mun
Teknoin Vol. 22 No. 7 (2016)
Publisher : Faculty of Industrial Technology Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknoin.vol22.iss7.art4

Abstract

Global warming caused by greenhouse gas emissions, e.g. carbon dioxide (CO2), in the atmosphere is now becoming a very serious problem facing the world community. Carbon dioxide emission increase from year to year, thus a necessary effort to reduce CO2 is required. Amine-based absorption is one of the methods for post-combustion capture. Monoethanolamine (MEA) is commonly used for CO2 capture solvent. This study aims to measure protonation constant (pKa) of MEA from 30 to 60°C using the potentiometric titration method. The results show that the pKa values of MEA are in general agree with the literature data. For instance, the pKa value of MEA at 30°C is 9.83 and that obtained from the literature is 9.80. Comparison between those two values gives a deviation of 0.22%.
Pengaruh pH dan Suhu Ekstraksi Zat Warna Alami dari Limbah Sabut Kelapa Muda (Cocos nucifera) pada Pewarnaan Kain Batik Mori Prima Non Mordan Agus Haerudin; Muhammad Ridwan Andi Purnomo; Sholeh Ma’mun
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2020: PROSIDING SNTKK 2020
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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Abstract

Environmental Assessment of Motorcycle using a Life-Cycle Perspective Bertha Maya Sopha; Setiowati Setiowati; Sholeh Ma’mun
Indonesian Journal of Life Cycle Assessment and Sustainability Vol. 1 No. 1 (2017)
Publisher : Indonesian Life Cycle Assessment Network (ILCAN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (401.035 KB) | DOI: 10.52394/ijolcas.v1i1.3

Abstract

Transportation sector contributes as the second largest polluter of the air pollution in Indonesia. Of the transportation sector, road transport has generated 70% of the air pollution, 81% of which is attributable to motorcycles. The motorcycles are currently accounting for 79% of the total motor vehicles. It is predicted that the number of motorcycles will continue to grow at an annual rate of 9-26%. However, due to little attention to the motorcycle’s environmental impacts, this present study, therefore, aims to assess and report the environmental impacts of using motorcycles based on life-cycle perspective. Using a functional unit of one passenger per kilometer (pkm), resource consumption and emissions through the entire life-cycle of a motorcycle were estimated. The foreground Life Cycle Inventory (LCI) was compiled through observation, interview, and secondary data, while the background LCI was based on ecoinvent data v.2.0. Results show that the environmental impacts of the chosen function unit constitute Abiotic Resource Depletion Potential (ADP) of 0.515 g Sb-eq., Global Warming Potential (GWP) of 176 g CO2-eq, Human Toxicity Potential (HTP) of 1.1 g 1.4-DCB-eq, and Acidification Potential (AP) of 0.544 g SO2-eq, respectively. Operation (usage stage) of the motorcycle has been the most contributor to GWP and AP, while manufacturing stage has been the most contributor to HTP. Potential interventions related to the manufacturing process, fuel, and usage of the motorcycle to reduce the environmental impacts are also discussed.
Implementation of Active Learning Method in Unit Operations II Subject Sholeh Ma'mun
International Journal of Chemistry Education Research VOLUME 2 ISSUE 1, FEBRUARY 2018
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcer.vol2.iss1.art7

Abstract

ABSTRACT: Active Learning Method which requires students to take an active role in the process of learning in the classroom has been applied in Department of Chemical Engineering, Faculty of Industrial Technology, Islamic University of Indonesia for Unit Operations II subject in the Even Semester of Academic Year 2015/2016. The purpose of implementation of the learning method is to assist students in achieving competencies associated with the Unit Operations II subject and to help in creating a conducive academic atmosphere so as to contribute to improving the quality of teaching and learning in the study environment. The implementation of this learning method synergized with the face-to-face method is quite successful. This is indicated by an increase in the students' final score ofB from the baseline by 44% to 80%. This achievement exceeds the targeted percentage of 60%.Keywords: active learning method, face to face method, process of learning, conducive academic atmosphere, unit operations IIReceived: 6 February 2018, Revised: 15 February 2018, Accepted: 25 February 2018
ZAT WARNA ALAMI BERBASIS LIMBAH SABUT KELAPA MUDA (COCO NUCIFERA) UNTUK PEWARNAAN KAIN BATIK Agus Haerudin Agus; Muhammad Ridwan Ridwan Andi Purnomo; Sholeh Sholeh Ma'mun
Dinamika Kerajinan dan Batik: Majalah Ilmiah Vol 39, No 1 (2022): DINAMIKA KERAJINAN DAN BATIK : MAJALAH ILMIAH
Publisher : Balai Besar Kerajinan dan Batik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22322/dkb.v39i1.7378

Abstract

Sabut kelapa muda salah satu limbah sumber daya alam yang dapat dimanfaatkan sebagai zat warna alami karena memiliki senyawa aktif sebagai donor pembawa warna, ketersediaan limbah sabut kelapa muda khususnya dilingkungan para penjual es kelapa muda di Yogyakarta cukup tinggi dan selama ini belum dimanfaatkan dengan optimal. Tujuan penelitian ini ingin mengetahui arah warna dan kualitas warna yang dihasilkan dari ekstrak limbah sabut kelapa muda kulit hijau untuk pewarnaan pada kain batik. Metode penelitian ini eksperimen kualitatif dengan melakukan variasi konsentrasi rasio larutan ekstraksi 1:5 dan 1:10, variasi suhu ekstraksi 60  dan 100 , variasi waktu ekstraksi 2 jam dan 4 jam. Hasil penelitian diperoleh ekstrak sabut kelapa muda kulit hijau sangat baik sebagai zat warna alami untuk pewarnaan kain batik, nilai uji ketuaan warna K/S tertinggi 0,0355 dari perlakuan variasi rasio ekstraksi 1:5, suhu 60 ℃ dan waktu 4 jam, nilai uji ketahanan luntur warna pada pencucian 40 ℃ rata-rata 4-5 kategori baik, nilai uji beda warna L*,a*,b* dan hasil pengamatan visual pada pantone color warna yang dihasilkan brown cork dan cream tan yang mengandung unsur arah warna kemerahan dan kekuningan.
Notifikasi Penarikan pada Artikel "Metode Pembelajaran Aktif pada Mata Kuliah Operasi Teknik Kimia II" (Refleksi Pembelajaran Inovatif, Vol. 1, No. 1, 2019) (10.20885/rpi.vol1.iss1.art7) Sholeh Ma’mun
Refleksi Pembelajaran Inovatif Vol. 1 No. 1 (2019): Volume 1 Nomor 1 Tahun 2019
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/rpi.vol1.iss1.art7

Abstract

Artikel ini telah ditarik (retract) oleh penerbit karena adanya kesalahan teknis, berupa publikasi ganda (Ma'mun, 2019b) ketika proses produksi sedang berlangsung. Peneribit meminta maaf atas ketidaknyamanan yang mungkin timbul.
Amine-based Carbon Dioxide Absorption: The Ionic Strength Effect on the Monoethanolamine Protonation Constant at Temperatures from 313 to 333K Sholeh Ma'mun; Panji Kumala Setiawan; Egip Indrayanto
ASEAN Journal of Chemical Engineering Vol 19, No 2 (2019)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (694.625 KB) | DOI: 10.22146/ajche.51832

Abstract

Amine-based absorption has been extensively used for carbon dioxide (CO2) removal processes, such as CO2 absorption from flue gas as well as from natural gas. As a reactive system in which the chemical reaction, as well as mass transfer, occur simultaneously, an experimental determination of equilibrium reaction constants, e.g. acid dissociation/protonation constant (Ka), is, therefore, necessary to be conducted. This study aims to evaluate the ionic strength effect from 0.06 to 6.0 m (mol/kg water) on the Ka value of monoethanolamine (MEA) at temperatures between 313 and 333K. The experimental results indicate that the pKa values tend to be increasing as the ionic strength increases. This is contradicting to the temperature effect where the pKa values tend to be decreasing as the temperature increases. Furthermore, the extended Debye-Hückel formulation was implemented to predict the species activity coefficients.
An Investigation into the Effectiveness of Green Betel (Piper betle L.) Leaf Extract Hand Sanitizer Diyas Aledya Yahya; Intan Permatasari; Sholeh Ma'mun
BERKALA SAINSTEK Vol 11 No 2 (2023)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v11i2.39190

Abstract

Green betel (Piper betle L.) leaf contains anti-thrush, anti-cough, astringent, and antiseptic chemicals such as saponins, flavonoids, polyphenols, and essential oils. Hand sanitizer can also be used as an antiseptic agent, which is a more practical option. The purpose of this study was to see how the composition of green betel leaf extract made by infusion affected its physical properties and bacterial inhibition. Hand sanitizer samples were made using different concentrations of green betel leaf extract (10 - 25 wt%) with and without the addition of tea tree essential oil. Sample testing included organoleptic tests, physical properties tests, and effectiveness tests on the growth of Escherichia coli bacteria. The results showed that the best composition was found to be at a concentration of 10 wt% green betel leaf extract without the addition of essential oil, with pH ranging from 5.2 to 5.8 and viscosities ranging from 1.32 to 1.99 cps, in the form of a watery gel and a clear yellow color. Meanwhile, hand sanitizer sensitivity testing revealed that none of the samples could inhibit the growth of Escherichia coli bacteria. This indicates that the concentration of green betel leaf extract in the sample is still insufficient to inhibit bacterial growth.
Co-Authors Agus Haerudin Agus Haerudin Agus Bertha Maya Sopha Deasy R. Alwani Desi Kurniawan Diyas Aledya Yahya Diyas Aledya Yahya Egip Indrayanto Eleonora Amelia Intan Permatasari Intan Permatasari Marhaenia Theresa Muhammad Ridwan Andi Purnomo Panji Kumala Setiawan Sarah Alfimona Setiowati Setiowati Vitro Rahmat