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ALAT PENANGKAP BAU DAN UAP BAHAN KIMIA BERBAHAYA UNTUK MELINDUNGI PEKERJA KERAJINAN FIBERGLASS DI PRAMBANAN DIY Sahroni, Imam; Zuhrufa, Zulfa; Nisaa, Choirun; Sajidah, Happy Bunga Nasyirahul
Program Kreativitas Mahasiswa - Teknologi PKM-T 2013
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

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In this paper, preparation of technology and its utilization as trapped function of dangerous odor and vapor in âfiberglassâ art is presented. Trapped technology was prepared by using blower pump, pipa PVC, and n-hexene as liquid trapping. Fiberglass batter was sipped from pump through pipa PVC. Dangerous compound from fiberglass was trapped by liquid trapping in closed system. Dangerous compound characterization in n-hexane was performed by GC-MS analysis. From the result, it is concluded that trapped technology can trap fiveteen (15) dangerous compund from fiberglass batter with five (5) dominant peakes. There are 2-methylpentane, methylbenzena, methylcyclohexene, 1-oktene, and cyclohexene.

Preparation of Low-cost Adsorbent Based on Mango Leaf (Mangefira Indica L) Biomass for Methylene Blue (MB) Adsorption Muhammad Miqdam Musawwa; Annisa Fajriati; Imam Sahroni; Ahmad Said
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 3, ISSUE 1, February 2022
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/EKSAKTA.vol3.iss1.art3

Preparation of leaf mango (Mangefira Indica L)-based adsorbent and its evaluation to reduce methylene blue (MB) concentration have been conducted. Two materials: ads-pristine and ads-CTAB which are referred as native leaf mango adsorbent and CTAB modified leaf mango have been prepared in this study. Cetyltrimethylammonium bromide (CTAB) is cationic surfactant usually used to modify and increase the surface area of the adsorbent for a specific purpose. The materials obtained were characterized by the Fourier Transform Infra-Red (FTIR) and the Scanning Electron Microscope (SEM) with general result, there were detected functional groups indicated the active sites on the adsorbent such as -OH, C-O, C=C. Ads-CTAB was specifically characterized with appearing of C-H aliphatic as the tail of CTAB molecule. SEM images show that both materials have roughness surface and irregular cavities. Additional of CTAB on the surface led the more regularly surface. The optimum pH was in basic region (8), while the optimum adsorbent mass and MB concentration are not clearly found due to the chart still increasing. However, the highest qe was found by 0.01 g of ads-pristine and ads-CTAB with the value 967.25 and 950.75 mg g-1 respectively. As the further evaluation, with the 0.5 adsorbent mass it may be applicated on the MB concentration at around 4000 mg L-1. Kinetics model of this adsorption was followed pseudo second order reactions.

ZnO-Porous Clay Heterostructure from Saponite as Green Catalyst for Citronellal Cyclization Dwiarso Rubiyanto; Nurcahyo Iman Prakoso; Imam Sahroni; Rico Nurillahi; Is Fatimah
Bulletin of Chemical Reaction Engineering & Catalysis 2020: BCREC Volume 15 Issue 1 Year 2020 (April 2020)
Publisher : Department of Chemical Engineering - Diponegoro University

Green conversion in organic synthesis is one of the interesting and important topics in green chemistry. The use of heterogeneous catalysis instead of homogeneous catalysis offers some advantages, such as easy separation and reusability. In this research, a heterogeneous acid catalyst was prepared from saponite by immobilizing ZnO in the form of a pillared clay (Zn/PILS) and Zn supported on porous clay heterostructure (Zn/PCH). Physicochemical studies involving X-ray diffraction measurement, surface analysis using a gas sorption analyzer, and surface acidity measurement were performed. Results indicated that the increasing surface acidity and the high specific surface area of the material were the relevant physicochemical properties that facilitate environment-friendly citronellal cyclization. The higher values for both parameters in Zn/PCH than in Zn/PILS linearly affected citronellal conversion and the selectivity for isopulegol production. Zn/PCH demonstrated a conversion rate of 98.9% for a 3-hour reaction and a selectivity of 100% for isopulegol production, and it exhibited reusability properties. Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Integrasi Perpustakaan Dan Kurikulum Berbasis Riset Untuk Meningkatkan Nilai Indeks Prestasi Mahasiswa-Santri Pondok Pesantren Universitas Islam Indonesia Imam Sahroni
UNILIB : Jurnal Perpustakaan Vol. 6 No. 1 2015
Publisher : Direktorat Perpustakaan Universitas Islam Indonesia

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Penelitian ini bertujuan untuk mengetahui pengaruh hadirnya fasilitas perpustakaan terhadap nilai Indeks Prestasi (IP) mahasiswa di Pondok Pesantren Universitas Islam Indonesia (UII) pada pergantian tahun akademik, yaitu semester genap 2011/2012 dan semester ganjil 2012/2013. Dalam hal ini juga dapat dilihat efektivitas program integrasi perpustakaan dengan kurikulum berbasis riset guna mendukung peningkatan nilai indeks prestasi mahasiswa dan misi perguruan tinggi menjadi World Class University (WCU). Data primer diambil dari mahasiswa-santri Pondok Pesantren Universitas Islam Indosia (UII) angkatan 2009 (12 mahasiswa), 2010 (10 mahasiswa), dan 2011 (12 mahasiswa). Dari analisa data didapatkan hasil persentase kenaikan prestasi akademik mahasiswa-santri Pondok Pesantren UII angkatan 2009 (12 mahasiswa) mengalami kenaikan nilai Indeks Prestasi sebanyak 75 % (9 mahasiswa) dan 25 % (3 mahasiswa) mengalami penurunan. Untuk angkatan 2010 mengalami kenaikan nilai Indeks Prestasi sebanyak 70 % (7 mahasiswa) dan penurunan 30 % (3 mahasiswa). Untuk angkatan 2011 mengalami peningkatan nilai Indeks Prestasi sebanyak 52 % (7 mahasiswa) dan penurunan 42 % (5 mahasiswa).

Pyrolysis of Biomass Waste as The Project Based Learning in Community Assistance Course Imam Sahroni
International Journal of Chemistry Education Research VOLUME 2 ISSUE 2, AUGUST 2018
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcer.vol2.iss2.art4

Community assistance course is a special course for undergraduate student level which need to be finished before doing final thesis project. This course aims to apply the student knowledge which is gained during six semesters in the class. This course is followed by fourty eight students from different department e.g. science, engineering, psychology, law, medicine, and also Islamic studies. We applied a pyrolysis of biomass waste as the tools for Project based learning in community area. We divide fourty eight student into eight teams. Each team was assigned to do some task e.g. literature study, project design, project implementation, and project report based on the pyrolysis project. After the project was finished, we evaluate the grade of each student using the learning outcome which was defined as the goal of the study. Fourty six students acquired grade A, while the other two students acquired grade B. This achievement related to the project based learning that we used in the Community Assistance Course. Keywords: project-based learning, pyrolysis, community assistance course

Virtual Laboratory in Chemistry: Recent Information and Communication Technologies (ICT) in Chemistry Practical Course Imam Sahroni; Wiyogo Prio Wicaksono; Maisari Utami; Lutfia Isna Ardhayanti
IJCER (International Journal of Chemistry Education Research) VOLUME 4, ISSUE 2, October 2020
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcer.vol4.iss2.art4

The covid-19 has impacted many sectors to change the way the run their activity, including the learning and teaching activity at a higher education. Many departments at the educational institution have been affected seriously due to the physical laboratory closing, especially for the activity at chemistry laboratory. The physical laboratory has been transformed to the virtual laboratory in order to accommodate the student to study the experimental course. By using the internet and communication technology (ICT) innovation in teaching and learning method, the student can still have the experiment and continue the lecture through online system. This effort may help the student to still play an active role while participating in the learning process.

Project-Based Learning: Chemistry Students’ Role in Fostering the Society in Recycling the Waste Cooking Oil Imam Sahroni; Lutfia Isna Ardhayanti; Chancard Basumerda; Muhammad Miqdam Musawwa; Randy Ramadani
International Journal of Chemistry Education Research VOLUME 6, ISSUE 2, OCTOBER 2022
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcer.vol6.iss2.art2

Project-based learning has been used globally as one of the effective methods to evaluate student performance in achieving the learning outcome of the chemistry subject. It became one of the priorities in implementing the new policy, Merdeka Belajar-Kampus Merdeka (MB-KM) from The Ministry of Education, Culture, Research and Technology in Indonesia. The student at the university level can join a project-based learning program conducted outside the classroom and supervised by the Project supervisor. We proposed the project-based learning program to maximize the chemistry students’ role in solving the waste cooking oil in society. The purpose of this program was to introduce the chemistry student to the real problem in the society and allow the dissemination of their innovative idea. The information prevailed from observing the activity, interviewing the students, and evaluating the student's performance. This project-based learning presented that students accomplish the information and knowledge they gain from the classroom into actions to solve the real problem in society. Keywords: project-based learning, Merdeka Belajar-Kampus Merdeka (MB-KM), waste cooking oil, chemistry students’ role

ZnO-Porous Clay Heterostructure from Saponite as Green Catalyst for Citronellal Cyclization Dwiarso Rubiyanto; Nurcahyo Iman Prakoso; Imam Sahroni; Rico Nurillahi; Is Fatimah
Bulletin of Chemical Reaction Engineering & Catalysis 2020: BCREC Volume 15 Issue 1 Year 2020 (April 2020)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.15.1.5800.137-145

Green conversion in organic synthesis is one of the interesting and important topics in green chemistry. The use of heterogeneous catalysis instead of homogeneous catalysis offers some advantages, such as easy separation and reusability. In this research, a heterogeneous acid catalyst was prepared from saponite by immobilizing ZnO in the form of a pillared clay (Zn/PILS) and Zn supported on porous clay heterostructure (Zn/PCH). Physicochemical studies involving X-ray diffraction measurement, surface analysis using a gas sorption analyzer, and surface acidity measurement were performed. Results indicated that the increasing surface acidity and the high specific surface area of the material were the relevant physicochemical properties that facilitate environment-friendly citronellal cyclization. The higher values for both parameters in Zn/PCH than in Zn/PILS linearly affected citronellal conversion and the selectivity for isopulegol production. Zn/PCH demonstrated a conversion rate of 98.9% for a 3-hour reaction and a selectivity of 100% for isopulegol production, and it exhibited reusability properties. Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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