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All Journal Reaktor International Journal of Renewable Energy Development TEKNIK METANA JURNAL KIMIA SAINS DAN APLIKASI JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Kimia dan Kemasan Majalah Ilmiah MOMENTUM ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Jurnal Inovasi Teknik Kimia Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Jurnal Teknik Kimia Indonesia Jurnal Kimia dan Kemasan Jurnal Pengabdian Vokasi Jurnal Profesi Insinyur Indonesia International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis

Aprilina Purbasari

Departemen Teknik Kimia, Fakultas Teknik, Universitas Diponegoro

Author-ID : 348885

Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Transportation

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PENGENALAN TEKNOLOGI PEMBUATAN KOMPOS DARI LIMBAH RUMAH TANGGA DI KELURAHAN BENDAN NGISOR KECAMATAN GAJAH MUNGKUR Dessy Ariyanti; Aprilina Purbasari; Slamet Priyanto; Purwanto Purwanto; Setia Budi Sasongko
Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Vol 3, No 3 (2021)
Publisher : Fakultas Teknik Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar

Hingga saat ini masyarakat secara luas dan warga di kelurahan Bendan Ngisor, Kecamatan Gajah Mungkur, Kota Semarang khususnya masih belum memiliki pengetahuan yang cukup mengenai sampah, terutama manfaat dari program reuse, reduce, recycle dari sampah maupun kemudahan dari penerapan metode 3R dalam kehidupan sehari-hari. Termasuk diantaranya pengetahuan mengenai kompos dari sampah rumah tangga dan teknologi pembuatannya. Kegiatan pengabdian masyarakat ini diselenggarakan untuk mendukung upaya pemerintah dalam mensosialisasikan program Reuse, Reduce and Recycle untuk mengatasi permasalahan sampah di Kota Semarang dengan memberikan pelatihan tentang pengetahuan dan keterampilan dalam mengelola secara mandiri serta memanfaatkan sampah rumah tangga terutama sampah organik menjadi kompos. Pasca pelatihan, 90% peserta mendapatkan pengetahuan tentang pembuatan kompos, dan 10% warga masyarakat mulai menerapkan teknologi pengomposan dirumahnya masing-masing.

The Effect of Alkaline Activator Types on Strength and Microstructural Properties of Geopolymer from Co-Combustion Residuals of Bamboo and Kaolin Aprilina Purbasari; Tjokorde Walmiki Samadhi; Yazid Bindar
Indonesian Journal of Chemistry Vol 18, No 3 (2018)
Publisher : Universitas Gadjah Mada

Geopolymer as a Portland cement substitute had been synthesized from alkaline activation of co-combustion residuals of bamboo and kaolin. Types of used alkaline activators were NaOH solution, KOH solution, a mixture of NaOH solution-water glass, and a mixture of KOH solution-water glass. Geopolymer with NaOH solution as activator had a compressive strength which was higher compared to geopolymer with KOH solution as an activator. However, geopolymer with NaOH solution-water glass as activator had a compressive strength which was lower compared to geopolymer with KOH solution-water glass as activator either at room temperature curing or at a curing temperature of 60 °C. The use of water glass with NaOH or KOH solution as activator could increase the compressive strength of geopolymer and yielded geopolymer having more dense and more homogeneous microstructure seen from SEM images. XRD patterns revealed the presence of sodium aluminosilicate hydrate in geopolymer with NaOH solution and NaOH solution-water glass as activators, and potassium aluminosilicate hydrate in geopolymer with KOH solution and KOH solution-water glass as activators. Furthermore, FTIR spectra indicated asymmetrical vibration of Si(Al)-O at around 1008 cm-1 related to geopolymer product.

SINTESIS GEOPOLIMER DARI METAKAOLIN DAN ABU BAMBU UNTUK APLIKASI SEMEN: KAJIAN WAKTU IKAT DAN MIKROSTRUKTUR Aprilina Purbasari; Tkokorde Walmiki Samadhi
Jurnal Inovasi Teknik Kimia Vol 4, No 2 (2019)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v4i2.3020

Geopolimer merupakan polimer anorganik dengan ikatan polimerik Si-O-Al yang dapat dimanfaatkan sebagai pengganti semen Portland karena proses produksinya berlangsung pada suhu rendah dibandingkan produksi semen Portland dengan bahan baku material alumino-silikat yang dapat berasal dari mineral alam dan limbah padat. Pada penelitian ini geopolimer dibuat dari campuran metakaolin dan abu bambu dengan aktivator alkali campuran larutan KOH 10 N dan larutan Na-Silikat serta campuran larutan NaOH 10 N dan larutan Na-Silikat. Waktu ikat pembentukan geopolimer dan mikrostruktur geopolimer yang dihasilkan telah dikaji pada penelitian ini. Waktu ikat awal dan akhir pembetukan geopolimer dengan aktivator alkali campuran larutan KOH 10 N dan larutan Na-Silikat lebih pendek dibandingkan dengan aktivator alkali campuran larutan NaOH 10 N dan larutan Na-Silikat. Hasil analisis SEM menunjukkan bahwa pada kedua geopolimer terbentuk fase kontinyu. Untuk hasil analisis XRD, pada geopolimer dengan aktivator alkali campuran larutan KOH 10 N dan larutan Na-Silikat terdapat leucite dan quartz, sedangkan pada geopolimer dengan aktivator alkali campuran larutan NaOH 10 N dan larutan Na-Silikat terdapat hydrosodalite dan quartz. Pada kedua geopolimer menunjukkan adanya struktur amorf. Kata kunci: abu bambu, geopolimer, metakaolin, mikrostruktur, semen, waktu ikat Kata kunci: abu bambu, geopolimer, metakaolin, mikrostruktur, semen, waktu ikat

Penyuluhan dan Pelatihan Pembuatan Hand sanitizer kepada Dawis Cendrawasih Manyaran Semarang Noer Abyor Handayani; Aprilina Purbasari; Dessy Ariyanti; Heny Kusumayanti
Jurnal Pengabdian Vokasi Vol 2, No 1 (2021): Juni 2021
Publisher : Sekolah Vokasi Universitas Diponegoro

Covid 19 is a disease that can be transmitted through droplet droplets produced when talking, coughing or sneezing. Currently, a clean lifestyle is a demand in socializing, one of which is washing your hands frequently. However, people are constrained to wash their hands frequently when doing activities outside the home. Therefore, people need hand sanitizers as a substitute for soap and water that can be used instantaneously. At the beginning of the pandemic, the number of hand sanitizers on the market dropped sharply because people experienced mass panic, so they made purchases in very large quantities and in a short time. Therefore, training for the community regarding the manufacture of hand sanitizers is necessary. This community service aims to provide training in making handsanitizers to Dawis Cendrawasih mothers in Manyaran Village, West Semarang District, Semarang City. With this training, the community in Dawis Cendrawasih can make their own hand sanitizers so that a healthy lifestyle is maintained.

TiO2-PDMS Super Hydrophilic Coating with Self-Cleaning and Antimicrobial Properties Dessy Ariyanti; Afiatin Afiatin; Pury Diana Shintawati; Aprilina Purbasari
Jurnal Kimia Sains dan Aplikasi Vol 24, No 6 (2021): Volume 24 Issue 6 Year 2021
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

In this paper, self-synthesized TiO2 nanoparticle was used as a coating material with the addition of polydimethylsiloxane (PDMS) on the surface of the glass and ceramic substrate via spray coating. The self-cleaning properties of the coating with photocatalytic activity mechanism were observed under irradiation of black lamp as well as surface wettability. The antimicrobial properties and the morphology under a scanning electron microscope were also investigated. The results showed that the coating exhibited self-cleaning properties, as demonstrated by the photocatalytic degradation of methylene blue up to 80% and wettability as a super hydrophilic layer with a water contact angle less than 10° for both glass and ceramic substrate. The coating also shows an antimicrobial property by extending the radius of microbial growth up to 67% compared to the uncoated sample. 3% TiO2 addition with 50% w/w PDMS is the optimum coating ratio for maximum photocatalytic activity, super hydrophilic, and antimicrobial properties.

BANTUAN ALAT PENJERNIH AIR TANAH DI PERUMAHAN DELTA MAS KOTA SEMARANG Aprilina Purbasari; Budiyono Budiyono; Tutuk Djoko Kusworo; Siswo Sumardiono; Kristinah Haryani
Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Vol 4, No 3 (2022)
Publisher : Fakultas Teknik Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/pasopati.2022.15037

Air merupakan sumber daya alam yang sangat penting bagi kehidupan manusia. Air dibutuhkan antara lain untuk pembangkit listrik, industri, pertanian, peternakan, dan dalam kehidupan sehari-hari manusia. Kegiatan pengabdian kepada masyarakat oleh Tim Pengabdian kepada Masyarakat Departemen Teknik Kimia FT Undip dilaksanakan di Perumahan Delta Mas, Kota Semarang. Pada Perumahan tersebut terdapat sumber air tanah yang berada di pangkal Jalan Delta Mas V (RT 5 RW 4). Air tanah tersebut digunakan untuk sarana kebersihan, sedangkan untuk minum dan memasak warga membeli air gunung atau air yang sudah diolah. Berdasarkan analisis situasi maka kegiatan pengabdian kepada masyarakat bertujuan untuk mengetahui kualitas air tanah serta memberikan bantuan alat penjernih air tanah di Perumahan Delta Mas, Kota Semarang. Hasil analisis air tanah yang diambil pada musim penghujan dan musim kemarau menunjukkan bahwa kadar deterjen, timbal (Pb), dan total Coliform melebihi Standar Baku Mutu Media Air untuk Keperluan Higiene Sanitasi sehingga Tim Pengabdian kepada Masyarakat memberikan bantuan berupa alat penjernih air dengan komponen utamanya karbon aktif untuk mengatasi hal tersebut. Hasil analisis air tanah setelah pemakaian alat penjernih air pada 1, 7, dan 28 hari menunjukkan bahwa kandungan deterjen dan timbal (Pb) dapat berkurang sehingga memenuhi Standar Baku Mutu, namun kandungan total Coliform masih melebihi Standar Baku Mutu. Selanjutnya disarankan untuk menghilangkan atau disinfeksi bakteri Coliform dalam air dengan cara yang sederhana, yaitu dengan pemanasan atau dengan proses klorinasi menggunakan kalsium hipoklorit (Ca(ClO)2 atau kaporit.Kata kunci : alat penjernih, air tanah,air higiene sanitasi

Synthesis and Performance Evaluation of Magnetized Modified Coal Fly Ash as Adsorbent for Naphthol Blue Black Dye Removal from Synthetic DyeWastewater Restu Kusumawardani; Aprilina Purbasari
TEKNIK Vol. 43, No. 3 (2022): December 2022
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v43i3.48337

The removal of dyes from wastewater has become a major concern in the textile industry due to the adverse effects of dyes on the environment. This research focuses on the adsorption of naphthol blue black (NBB) dye by synthesizing coal fly ash with alkali (sodium hydroxide solution) and Fe3O4 (magnetite) to accelerate the separation of dyes from aqueous solutions. Magnetized modified coal fly ash (MMCFA) was characterized by XRF, SEM, and FTIR analysis. Batch experiments were carried out to study the effect of pH, initial concentration, and contact time on the efficiency of dye removal. The results showed that the adsorption of NBB dye reached the optimum condition at initial concentration of 100 mg/L with pH of 6 and contact time of 120 minutes. The ability of MMCFA to adsorb NBB dye was higher than that of sieved coal fly ash (SCFA) and modified coal fly ash (MCFA). The addition of alkali and Fe3O4 can be proven to increase the adsorption ability of SCFA. The percentage of NBB dye that was adsorbed by MMCFA, MCFA, and SCFA at optimum condition was 96.39%, 89.83%, and 89.33%, respectively.

Optimization and characterization of biodegradable film based on glutinous flour/glycerol/chitosan/ZnO using Response Surface Methodology (RSM) - Central Composite Design (CCD) Aulia Beta Safira; Aprilina Purbasari
Jurnal Kimia Sains dan Aplikasi Vol 25, No 10 (2022): Volume 25 Issue 10 Year 2022
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.25.10.368-381

Starch-based films are considered more competitive than petroleum because they are renewable, environmentally friendly, and easily degraded. The film in this study was fabricated from white glutinous flour, glycerol, chitosan, and ZnO through a starch gelatinization process. Chitosan content ranges from 2-4% (w/v), ZnO 4-8% of the dry weight of solid, and glycerol 15-45% of the dry weight of solids with a mass of white glutinous flour as much as 3 g was determined. Optimization and determination of running variables based on Central Composite Design. Response variables such as tensile strength, elongation, and water absorption were observed as important parameters in applying film as packaging materials. The Design Expert program recommended 2 g of chitosan: 8 % ZnO: 36.02% glycerol as the best composition in film fabrication, which aims to obtain maximum tensile strength and elongation, as well as minimum water absorption with the maximum desirability value (0.660). The predicted response values under optimal conditions by RSM were 3.68 MPa for tensile strength, 86.79% for elongation, and 268.09% for water absorption. The actual response has a tensile strength of 3.31 MPa, elongation of 83.5%, and water absorption of 320%. On average, a white glutinous flour/glycerol/chitosan/ZnO-based film required ± 45 days to degrade in the soil completely.

Preparation and Characterization of Zeolite Membrane for Bioethanol Purification Aprilina Purbasari; Titik Istirokhatun; Ariestya Meta Devi; Lulluil Mahsunnah; Heru Susanto
Bulletin of Chemical Reaction Engineering & Catalysis 2013: BCREC Volume 8 Issue 1 Year 2013 (June 2013)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.8.1.4062.47-53

The use of bioethanol as an alternative fuel with a purity of more than 99.5% wt has prompted research on bioethanol purification. One of the promising methods used for bioethanol purification is pervaporation membrane. This research is aimed to prepare and characterize zeolite membranes for pervaporation membrane. The membrane preparation consisted of two stages, namely support preparation and zeolite deposition on the support. In support preparation, α- alumina and kaolin with specific composition (50:30; 40:40; 50:30) was mixed with additives and water. After pugging and aging process, the mixture became paste and extruded into tubular shape. The tube was then calcined at temperature of 1250 °C for 3 hours. After that, zeolite 4A was deposited on the tubes using clear solution made of 10 %wt zeolite and 90 %wt water and heated at temperature of 80 °C for 3 hours. Furthermore, the resulting zeolite membranes was washed with deionized water for 5 minutes and dried in oven at temperature of 100 °C for 24 hours. Characterization of zeolite membranes included mechanical strength test, XRD, and SEM. In the mechanical strength test, the membrane sample with α- alumina:kaolin = 50:30 (membrane A) has the highest mechanical strength of 46.65 N/mm2. Result of XRD analysis for the membrane A indicated that mullite and corundum phases were formed, which mullite phase was more dominant. Meanwhile the result of SEM analysis shows that zeolite crystals have been formed and covered the pores support, but the deposition of zeolite has not been optimal yet. The performance examination for bioethanol purification showed that the membrane could increase the purity of bioethanol from 95% to 98.5% wt. © 2013 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)

Peta Jalan (Roadmap) Hilirisasi Industri Manufaktur Berbasis Logam untuk Mendukung Ibu Kota Nusantara (IKN) di Kalimantan Timur Pratama, Pambudi Pajar; Buchori, Luqman; Purbasari, Aprilina
Jurnal Profesi Insinyur Indonesia Vol 2, No 1 (2024): JPII
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpii.2024.21322

Pemindahan Ibu Kota Negara (IKN) dilakukan sebagai salah satu strategi mendorong percepatan pengurangan kesenjangan ekonomi dan peningkatan pertumbuhan perekonomian di luar Jawa, terutama Kawasan Timur Indonesia. Pembangunan kawasan industri merupakan salah satu faktor penentu dalam perkembangan industri manufaktur pada suatu wilayah. Kawasan Industri adalah kawasan tempat pemusatan kegiatan industri yang dilengkapi dengan sarana dan prasarana penunjang yang dikembangkan dan dikelola oleh Perusahaan Kawasan Industri. Dalam kajian ini, akan difokuskan hanya 4 (empat) mineral strategis yang bisa dikembangkan di dalam Kawasan Industri maupun Kawasan Peruntukan Industri yang mendukung IKN yaitu nikel, bauksit, tembaga, dan timah dimana diharapkan pada periode waktu tertentu dapat memberikan petunjuk tahapan langkah yang perlu dilakukan untuk mencapai usulan target pada tiap program baik turunan maupun utama serta menjadi acuan pemerintah di dalam negeri dalam perencanaan, pemanfaatan, pengendalian, serta pengembangan sumber daya alam. Pelaksanaan penyusunan kajian dilakukan dengan pengumpulan literatur, kajian, pertemuan rutin tim dan wawancara penyusun naskah akademik dengan narasumber, yang kemudian disosialisasikan dengan Focus Group Discussion (FGD) dan diskusi publik. Pembangunan hilirisasi industri komoditas nikel untuk mendukung industri prioritas baterai kendaraan listrik dan stainless steel, sedangkan untuk komoditas bauksit yaitu membangun industri aluminium untuk panel surya, komponen EV Battery Pack, food packaging, dan komponen elektrikal, Untuk komoditas tembaga yaitu untuk mendukung industri prioritas kabel dan penggerak motor listrik/dinamo, serta komoditas timah yaitu membangun industri timah untuk mendukung industri prioritas tin chemical, PCB, industri elektronika. Kata kunci: peta jalan, hilirisasi, industri manufaktur, logam, IKN

Co-Authors . Suherman Afiatin Afiatin Afri Yenni Agnesia Permatasari Alice Pramashinta Andri Cahyo Kumoro Anissa Ardanti Wulandari Ariestya Meta Devi Arif Fajar Utomo Aulia Beta Safira Ayyubi, Shalahudin Nur Budi Ismadi Budiyono Budiyono Darmaji, Timothius Adrian Christantyo Dessy Ariyanti Dessy Ariyanti Didi Dwi Anggoro Ekky Febri Ariani Erwan Adi Saputro Faleh Setia Budi Fikri Mudzakir Marasabessy Hafsah Fajrin Aprilianti Hamzah, Fazlena Hapsari, Farida Diyah Hargono Hargono Heny Kusumayanti Heny Kusumayanti Herry Santosa Heru Susanto Kristinah Haryani Laeli Kurniasari Lesdantina, Dina Lukman Atmaja Lulluil Mahsunnah Luqman Buchori M. Djaeni Machmud Lutfi H Margaretha Praba Aulia Mira Amalia Hapsari Muhammad Adi Irawan Muslim, Aristianto Nita Aryanti Nita Aryanti Noer Abyor Handayani Noer Abyor Handayani Nungki Primastuti Pratama, Pambudi Pajar Pratiwi, Wahyu Zuli Purwanto Purwanto Purwanto Purwanto Pury Diana Shintawati Raizka Kharisma Mediani Ratnawati Ratnawati Restu Kusumawardani Rini Kusumawati Samadhi, T Walmiki Saputra, Erwan Adi Sary, Cindy Nella Setia Budi Sasongko Shalahudin Nur Ayyubi Silviana Silviana Silviana Silviana Siswo Sumardiono Slamet Priyanto Sri Rukiyawati Suherman Suherman Titik Istirokhatun Tjokorde Walmiki Samadhi Tjokorde Walmiki Samadhi Tjokorde Walmiki Samadhi Tkokorde Walmiki Samadhi Tutuk Djoko Kusworo Vitus Dwi Yunianto Vitus Dwi Yunianto Budi Ismadi Wei Gao Wisnu Jati N Wulandari Dharsono Y. Saptiana Oktari Yazid Bindar Yazid Bindar Yustina Linasari

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