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Zakiyah Darajat
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Sosialisasi Biodigester Sederhana dan Pengolahan Limbah Organik menjadi Biogas pada Siswa-Siswi SMK Muhammadiyah Bontang Fitria Fitria; Mimin Septiani; Zakiyah Darajat
Jurnal Pengabdian Ahmad Yani Vol. 2 No. 1 (2022): Juni
Publisher : Sekolah Tinggi Teknologi Industri (STTI) Bontang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (287.101 KB) | DOI: 10.53620/pay.v2i1.61

Abstract

Abstract Energy scarcity is a hot issue, which encourages the drafting team of Community Service Activities to socialize the use of organic waste into bioenergy on a simple scale. One example of the results of organic waste treatment is Biogas (Mayasari et al., 2010). The approach method used is to provide students with an understanding of the potential of renewable energy in the city of Bontang. Continuing by socializing the manufacture of simple reactors and the process of fermenting organic waste to produce biogas. From the results of this training, it can be concluded with enthusiasm from the students that the activities are carried out well and are able to increase students' knowledge about the potential waste in the surrounding environment and it is hoped that they will be able to practice making organic waste biodigesters on a simple scale. Keywords: Biodigester, Organic Waste, Smk Students
Pengaruh Waktu Aktivasi Terhadap Karakterisasi Arang Aktif Tongkol Jagung dengan Menggunakan Aktivator H2SO4 Zakiyah Darajat; Mimin Septiani; Fitria Fitria
Jurnal Teknik Juara Aktif Global Optimis Vol. 3 No. 1 (2023): June
Publisher : STTI Bontang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53620/jtg.v3i1.101

Abstract

Tongkol jagung telah banyak digunakan sebagai sumber arang aktif atau karbon aktif dengan berbagai cara sintesis karena mengandung selulosa, hemiselulosa, dan lignin dengan kadar yang besar. Arang aktif merupakan senyawa karbon yang daya absorpsinya ditingkatkan melalui proses karbonasi dan aktivasi. Penelitian ini bertujuan untuk mengetahui pengaruh waktu aktivasi terhadap karakterisasi arang aktif tongkol jagung meliputi bulk density, Bagian yang tersisa pada pemanasan 950 oC, dan uji daya serap arang aktif terhadap larutan Iod (I2). Pada penelitian ini digunakan variasi waktu aktivasi 6, 12, 18, 24, dan 36 jam dengan menggunakan H2SO4 sebagai aktivator. Hasil penelitian menunjukkan seiring bertambahnya waktu aktivasi, bulk density semakin berkurang, Bagian tersisa pada pemanasan 950 oC semakin bertambah, dan daya serap terhadap larutan Iod (I2) semakin bertambah, di mana waktu aktivasi yang optimum adalah 36 jam. Data karakterisasi arang aktif tongkol jagung sudah memenuhi SII 0258-88, kecuali pada pengujian daya serap terhadap larutan iod (I2). Kata kunci: tongkol jagung, arang aktif, karakterisasi
Pemanfaatan Ekstrak Belimbing Wuluh (Avverhoa bilimbi L.) Menjadi Sabun Cuci Piring Zakiyah Darajat; Dian Ranggina; Harun Pampang; Afriyanti S. Lamuru; Muhammad Arham Yunus; Maria Assumpta Nogo Ole; Nurfiansyah Nurfiansyah
COVIT (Community Service of Tambusai) Vol. 2 No. 2 (2022): SEPTEMBER 2022
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/covit.v2i2.18389

Abstract

Wuluh star fruit is a plant that is rich in benefits. The population of this plant is very abundant in the community both in the yard or as a shade plant in the yard. The population of this plant is not proportional to its utilization so that the star fruit usually falls and rots. Seeing this, a community service activity was carried out regarding the use of starfruit into dish soap, which besides being able to add to the economic value of starfruit, can also reduce environmental pollution. Wuluh star fruit (Averrhoa bilimbi L.) contains saponins, flavonoids, acetic acid, and vitamin C. Saponins have the ability to kill bacteria while flavonoids can destroy bacterial proteins by lysis method so that bacteria cannot reproduce and die. Saponins also function as a foam producer so that they can be used in the manufacture of dish soap. Keywords: Wuluh star fruit, saponin, dish soap
Studi Kinetika Adsorpsi Logam Tembaga (Cu) Menggunakan Ampas Kopi dan Kulit Ari Pipil Jagung Zakiyah Darajat; Mimin Septiani; Mahirullah Mahirullah; Arifah Sukasri
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i3.5568

Abstract

Pencemaran logam berat tembaga (Cu) dalam limbah cair industri merupakan permasalahan lingkungan yang berbahaya karena bersifat toksik dan sulit terdegradasi secara alami. Penelitian ini bertujuan untuk mengkaji efektivitas ampas kopi dan kulit ari pipil jagung sebagai adsorben alternatif dalam menurunkan konsentrasi ion Cu (II) pada limbah sintetik, serta menganalisis kinetika proses adsorpsinya. Adsorben dipreparasi melalui proses pengeringan, karbonisasi pada suhu 400–500 °C, dan aktivasi kimia menggunakan larutan HCl 0,1 M. Proses adsorpsi dilakukan dalam kolom adsorpsi dengan variasi waktu kontak 10, 20, dan 30 menit. Konsentrasi Cu (II) dianalisis menggunakan spektrofotometer UV-Vis. Hasil penelitian menunjukkan bahwa kedua adsorben efektif menurunkan konsentrasi Cu (II), dengan efisiensi tertinggi sebesar 77,92% untuk ampas kopi dan 90,91% untuk kulit ari pipil jagung pada waktu kontak 30 menit. Kajian kinetika menunjukkan bahwa model pseudo orde dua (Ho) memberikan kecocokan terbaik dengan nilai R² masing-masing sebesar 0,993 dan 0,976, yang mengindikasikan bahwa mekanisme adsorpsi berlangsung secara kimisorpsi. Hasil ini membuktikan bahwa ampas kopi dan kulit ari pipil jagung berpotensi sebagai adsorben ramah lingkungan, murah, dan efektif untuk pengolahan limbah cair yang mengandung logam berat Cu (II).
Pengaruh Suhu dan Ion Logam Terhadap Potensi Senyawa Kompleks Ditiokarbamat Sebagai Zat Aditif Pada Pelumas Dian Ranggina; Zakiyah Darajat; Muhammad Arham Yunus; Nurfiansyah Nurfiansyah
KOLONI Vol. 1 No. 4 (2022): DESEMBER 2022
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/koloni.v1i4.94

Abstract

The ideal quality of lubricant can be obtained by adding additives. One of the functions of additives in lubricants is to maintain viscosity against temperature changes. Dithiocarbamate complexes with heavy metals have very low solubility in water so that dithiocarbamate compounds have great potential as additives in lubricants. This research was conducted in an effort to determine the effect of temperature (40 oC and 100 oC) on the viscosity of the lubricant and metal ions (Mn2+, Fe3+, Co2+) in the synthesis of dithiocarbamate complex compounds on their potential as additives in lubricants. This compound was synthesized by in situ method and to measure and compare the viscosity of the lubricant before and after the addition of the complex compound as an additive.The results showed that complex compounds from N-ethylisopropylditiocarbamate ligands could be synthesized with metal ions Mn(II), Fe(III) and Co(II). Where is the synthesis of complex compounds obtained yields Mn(II)-N-ethylisopropylditiocarbamate amounted to 49.59%, Fe(III)-N-Ethylisopropyldithiocarbamate of 41.81%,and Co(II)-N-Etilisopropil ditiocarbamate by64.12%.From the results of the characterization of the viscosity test, it can be seen that temperature and metal ions in complex compounds affect their potential effectiveness as additives in lubricants. Of the three complex compounds it is more effective at 100 oC than 40 oC, where metal ions Mn (II) are more effective than Fe(III) and Co (II). Keywords: Lubricants, additives, metal ions, temperature, dithiocarbamate.
Efektivitas Penggunaan Poli Aluminium Klorida (PAC) dan Aluminium Sulfat (Tawas) Dalam Pengolahan Limbah Cair Industri pada Waste Water Treatment Plant (WWTP) PT. KIMA Makassar dengan Metode Koagulasi Menggunakan Jar Test Harun Pampang; Maria Assumpta Nogo Ole; Zakiyah Darajat
KOLONI Vol. 1 No. 4 (2022): DESEMBER 2022
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/koloni.v1i4.280

Abstract

Wastewater in industrial areas has various contents. The levels of pollutant substances in waste water have been regulated in industrial area waste water quality standards stipulated in Government Regulations. One method used to achieve quality standards is a chemical process, namely adding chemicals as coagulants using a jar-test machine. In this study, the coagulation process of liquid waste from PT. Makassar Industrial Area with the addition of polyaluminium chloride (PAC) and aluminum sulfate (alum) which aims to study the effectiveness of using two types of coagulants with variations of 0.02, 0.04, 0.06, and 0.08 grams in 500mL of wastewater. After 1 minute fast stirring and 10 minutes slow stirring then leaving for 10 minutes, the TSS test showed that the addition of alum was able to reduce TSS better than the addition of PAC. The addition of 0.04 grams of alum resulted in an effectiveness of 91.71%, while for PAC the best results were the addition of 0.06 grams of coagulant with an effectiveness of 46.13%. Keywords: coagulation, jar-test, alum, PAC, wastewater treatment
Co-Authors Afriyanti S. Lamuru Arifah Sukasri Dian Ranggina Fitria Fitria Harun Pampang Mahirullah Mahirullah Maria Assumpta Nogo Ole Nurfiansyah Nurfiansyah Septiani, Mimin Yunus, Muhammad Arham