Claim Missing Document
Check
Articles

Found 19 Documents
Search

PENGARUH PENAMBAHAN ASAM SITRAT TERHADAP KARAKTERISTIK FILM PLASTIK BIODEGRADABLE DARI PATI KULIT PISANG KEPOK (Musa acuminata balbisiana Colla) Permatasari, Dita Ayu; suharti, profiyanti hermien; Hardjono, Hardjono; Sari, Vivi Alvionita
Jurnal Bahan Alam Terbarukan Vol 5, No 1 (2016): June 2016 [Nationally Accredited]
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v5i1.5965

Abstract

Banana peels can be used as raw material for biodegradable plastic film because the banana peels was consists of starch. Starch was derived from banana peels would be rapidly changing color or browning. Browning was prevented by the addition of citric acid during the process of starch extraction from banana peels. The aim of this study was to determine the effect of citric acid on mechanical properties and capabilities degradation of starch biodegradable film made from this starch (film plastik pati kulit pisang – FPKP). FPKP was made with banana peel starch (pati kulit pisang – PKP) as raw materials, with the addition of glycerol as a plasticizer, and both CaCO3 and CMC as filler, whereas the PKP was obtained by simple extraction methods with or without the addition of citric acid. Glycerol concentration was varied from 20% w/w to 60% w/w, while CaCO3 and CMC were added in a fixed amount. The results was showed that the addition of citric acid affects the color of a PKP produced. The addition of citric acid can enhance the tensile strength of FPKP, up to 4,202 MPa for FPKP with CaCO3 filler and 4.032 MPa for FPKP with CMC filler. For biodegrability of FPKP, the affect of citric acid apply vice versa.
Pemanfaatan Serbuk Gergaji Kayu sebagai Karbon Aktif melalui Proses Pirolisis dan Aktivasi Kimia Khalimatus Sa'diyah; Profiyanti Hermien Suharti; Nanik Hendrawati; Finda Agustin Pratamasari; One Mahardika Rahayu
CHEESA: Chemical Engineering Research Articles Vol 4, No 2 (2021)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v4i2.8589.91-99

Abstract

Ketersediaan limbah serbuk gergaji kayu sangat potensial diolah menjadi karbon aktif karena mengandung selulosa dan lignin yang menyebabkan serbuk gergaji kayu dapat mengikat ion logam berat. Pemanfaatan karbon aktif banyak digunakan di berbagai industri, diantaranya sebagai penyerap zat pencemar dan logam berat. Penelitian ini membahas tentang pembuatan dan pemanfaatan serbuk gergaji kayu sebagai karbon aktif (adsorben) melalui pirolisis dan aktivasi kimia. Tujuannya adalah untuk mengetahui pengaruh suhu pirolisis terhadap kualitas karbon aktif yang dihasilkan. Karbon aktif dibuat menggunakan serbuk gergaji kayu yang didehidrasi di bawah sinar matahari. Proses karbonisasi dilakukan dengan metode pirolisis pada suhu 200 °C, 225 °C, 250 °C, 275 °C dan 300 °C selama 1 jam.  Hasil proses pirolisis selanjutnya diaktivasi menggunakan aktivator basa kuat (NaOH) dengan konsentrasi 1 N dan waktu aktivasi 3 jam. Berdasarkan hasil penelitian, suhu pirolisis yang menghasilkan kualitas karbon aktif mendekati Standar Industri Indonesia (SII) 0258-88 adalah pada suhu 275 °C. Kualitas karbon aktif yang dihasilkan memiliki kadar air 3 %, kadar abu 10,2 %, kadar volatile matter 23 %, dan kadar fixed carbon 63,7 %. 
Pengaturan Parameter Kendali Level pada Vapor Absorption Chiller dengan Menggunakan Metode Tuning Internal Model Control (IMC) Profiyanti H. Suharti; Khalimatus Sa’diyah; Gagah Arga Raya Saputra; Meydana Nurrisky
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2020: PROSIDING SNTKK 2020
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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

Abstract

PENGARUH PENAMBAHAN ASAM SITRAT TERHADAP KARAKTERISTIK FILM PLASTIK BIODEGRADABLE DARI PATI KULIT PISANG KEPOK (Musa acuminata balbisiana Colla) Hardjono, Hardjono; suharti, profiyanti hermien; Permatasari, Dita Ayu; Sari, Vivi Alvionita
Jurnal Bahan Alam Terbarukan Vol 5, No 1 (2016): June 2016 [Nationally Accredited]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v5i1.5965

Abstract

Banana peels can be used as raw material for biodegradable plastic film because the banana peels was consists of starch. Starch was derived from banana peels would be rapidly changing color or browning. Browning was prevented by the addition of citric acid during the process of starch extraction from banana peels. The aim of this study was to determine the effect of citric acid on mechanical properties and capabilities degradation of starch biodegradable film made from this starch (film plastik pati kulit pisang – FPKP). FPKP was made with banana peel starch (pati kulit pisang – PKP) as raw materials, with the addition of glycerol as a plasticizer, and both CaCO3 and CMC as filler, whereas the PKP was obtained by simple extraction methods with or without the addition of citric acid. Glycerol concentration was varied from 20% w/w to 60% w/w, while CaCO3 and CMC were added in a fixed amount. The results was showed that the addition of citric acid affects the color of a PKP produced. The addition of citric acid can enhance the tensile strength of FPKP, up to 4,202 MPa for FPKP with CaCO3 filler and 4.032 MPa for FPKP with CMC filler. For biodegrability of FPKP, the affect of citric acid apply vice versa.
Aplikasi Tuning Metode Cohen-Coon pada Pengendali pH di Tangki Neutralisasi, Unit Pengolahan Limbah Profiyanti Hermien Suharti; Khalimatus Sa'diyah
Eksergi Vol 16, No 2 (2019): Vol 16, No 2 (2019)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v16i2.2993

Abstract

Wastewater generated in industry should be treated, in order to meet the standards set by the Government. pH became important parameters in the process of wastewater treatment. One of waste in industrial synthetic fibers contain ions that make pH of wastewater ranged from 2 to 3. The value of the threshold for the pH of the wastewater, based on regulation of the Minister of environment, ranged from 6 to 9. The main process to achieve this standar was the neutralization process. In order to fulfilment the pH target, pH controller has been used to monitor the pH at neutralization tank. pH controller which is used is a type of PID (proportional, integral, derivative) controller. The PID parameter that used in the controller are proportional gain (Kc) 10, integral time (τi) 1 minutes and 10 second as derivative time (τD). This parameter yields an oscillation response. This research aims to get the optimum PID parameters that can be applied to keep wastewater pH around 7. The experiment results show that the parameters of the PID controller Kc = 0.251, τi = 151 second = 2.51 minutes and τD = 12.5 second, had better performance than the PID controller parameters used previously.
PENDAMPINGAN SISTEM PENGELOLAAN KEUANGAN BERBASIS SPREADSHEET BAGI GURU MI DARUSSALAM JATIGUWI Sa'diyah, Khalimatus; Suharti, Profiyanti Hermien; Hidayati, Mutia Devi; Iswara, M. Agung Indra
PEDULI: Jurnal Ilmiah Pengabdian Pada Masyarakat Vol 5 No 1 (2021)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37303/peduli.v5i1.318

Abstract

MI Darussalam Jatiguwi is one of the MI’s in Malang Regency. Many problems are faced by the institution, one of which is the limited number and competence of teachers or teaching staff and the lack of use of information technology to support activities financial management system in elementary school. The purpose of implementing this Community Service Activity (PkM) is the revitalization and development of MI Darussalam teachers related to a SpreadSheet-based financial management system mentoring workshop. The implementation of PkM is carried out by giving live lectures and demonstrations of using applications to manage madrasah finances. The PkM activity was held in the MI Darussalam Jatiguwi building and was attended by the PkM Team and students of the Chemical Engineering Department as well as teachers and staff of MI Darussalam Jatiguwi. This PkM activity pays attention to the health protocol, namely the participants involved are measured their body temperature, before entering the room clean their hands and must wear masks during the activity. The event started with an opening by the Chairman of the MI Darussalam Foundation, followed by remarks by representatives of the PkM Team, a symbolic handover of computer grants and the provision of materials. Participants participated enthusiastically.
Pelatihan Pembuatan Hand Sanitizer untuk Kader Posyandu Kamboja Kelurahan Tasikmadu Kota Malang Agung Ari Wibowo; Profiyanti Hermien Suharti; Asalil Mustain; Shabrina Adani Putri
AJAD : Jurnal Pengabdian kepada Masyarakat Vol. 2 No. 1 (2022): MAY 2022
Publisher : Research Division Lembaga Mitra Solusi Teknologi Informasi (L-MSTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (468.841 KB) | DOI: 10.35870/ajad.v2i1.24

Abstract

Posyandu Kamboja was established in 1975 in Tasikmadu Village, Lowokwaru District with an active cadre of 15. The activities of the Posyandu Kamboja include Integrated Healthcare Center for Invant and toddler, Family and Toddler Development Program and Early Childhood Education Post. Healthy life counseling is one of the main activities and is generally a priority in the implementation of Posyandu activities. The development program offered by the community service team to overcome partner problems includes training and assistance in making hand sanitizers as a solution to the limited skills of the Posyandu cadres. The results obtained from the implementation of the training are that posyandu cadres can easily understand the material and skills being taught because the delivery method includes the hands-on practice of making hand sanitizers. In general, there were no obstacles in the activities implementation and the team received very satisfactory feedback from the posyandu cadres.
Pembuatan dan Karakterisasi Plastik Biodegradable dari Umbi Talas (Xanthosoma sagittifolium) dengan Penambahan Filler Kitosan dan Kalsium Silikat S. Sigit Udjiana; Sigit Hadiantoro; Muchammad Syarwani; Profiyanti Hermien Suharti
Jurnal Teknik Kimia dan Lingkungan Vol 3, No 1 (2019): April 2019
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (877.157 KB) | DOI: 10.33795/jtkl.v3i1.80

Abstract

Permasalahan tentang sampah plastik di Indonesia berdampak pada ketidakstabilan ekosistem lingkungan dan peningkatan pencemaran lingkungan. Hal ini dikarenakan sampah plastik tidak dapat terurai oleh mikroorganisme di dalam tanah. Inovasi untuk mengatasi masalah ini terus dilakukan, salah satunya adalah pengembangan plastik biodegradable. Plastik biodegradable dalam penelitian ini dikembangkan dengan pati umbi talas sebagai bahan utama, sorbitol sebagai plasticizer serta kitosan dan kalsium silikat sebagai filler. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan filler kitosan dan kalsium silikat terhadap sifat mekanik, kemampuan biodegradasi, maupun water absorption. Selain itu, juga dilakukan analisa Scanning Electron Microscope (SEM) untuk mengetahui morfologi dari plastik biodegradable. Variabel berubah yang digunakan dalam penelitian ini adalah 2%,4%,6% dan 8% dari berat pati yang digunakan. Plastik biodegradable dibuat menggunakan metode casting, di mana pati didispersikan ke dalam campuran air dan plasticizer. Hasil percobaan menunjukkan bahwa kemampuan degradasi paling tinggi sebesar 42,86% untuk plastik biodegradable dengan filler kalsium silikat 6%. Sedang hasil uji water absorption menunjukkan nilai terendah 11,76% dengan filler kitosan 8%. Uji kuat tarik diperoleh nilai paling besar 9,56 MPa pada filler kalsium silikat 6%.Plastic waste in Indonesia became a national problematic that has an impact on the instability of environmental ecosystems and increased environmental pollution. This happens because plastic waste cannot be decomposed by microorganisms in the soil. Innovation has been carried out continuously to overcome this problem. the development of biodegradable plastic became one solution to this problem. Biodegradable plastic in this study was developed with taro tuber starch as the main ingredient, sorbitol as plasticizer and chitosan and calcium silicate as filler. The objective of this study was to determine the effect of the addition of chitosan and calcium acetate as fillers on mechanical properties, biodegradability, and water absorption. Scanning Electron Microscope (SEM) was also analyzed in this study to determine the morphology of biodegradable plastic. The variables used in this study were the amount of fillers as much as 2%, 4%, 6%, and 8% of the weight of the starch used. Biodegradable plastic has been made using the casting method, in which starch is dispersed into a mixture of water and plasticizer. The results showed that the highest biodegradation ability was 42.86% for biodegradable plastic with 6% calcium silicate filler. While the water absorption results showed the lowest value of 11.76% for biodegradable plastic with 8% chitosan filler. Tensile strength test obtained the highest value of 9.56 MPa for biodegradable plastic with 6% calcium silicate filler.
ANALISA EKONOMI PRA RANCANGAN PABRIK KIMIA PEMBUATAN BIODIESEL BERBAHAN BAKU MINYAK JELANTAH DENGAN KATALIS KOH KAPASITAS 37.000 TON/TAHUN Delfira Yudith Tomasila; Profiyanti Hermien Suharti
DISTILAT: JURNAL TEKNOLOGI SEPARASI Vol 6, No 2 (2020): Agustus 2020
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v6i2.141

Abstract

Seiring dengan berjalannya waktu, permintaan masyarakat akan bahan bakar fosil terus meningkat. Hal ini tidak seimbang dengan ketersediaan bahan bakar fosil yang semakin menurun. Cadangan bahan bakar fosil di Indonesia sendiri diperkirakan akan habis dalam 10 tahun kedepan. Sehingga dibutuhkan suatu energi alternatif. Biodiesel adalah energi alternatif yang terbuat dari bahan bakar nabati, menyerupai solar atau minyak diesel, dan dapat menghasilkan emisi CO2 lebih sedikit dibanding solar. Pemillihan minyak jelantah dilakukan karena mudah didapat serta mampu menekan biaya produksi. Penambahan katalis KOH untuk membantu mempercepat reaksi. Pra rancangan pabrik biodiesel kapasitas 37.000 ton/tahun ini diharapkan mampu memenuhi 60% kebutuhan masyarakat. Hasil dari perhitungan diperoleh nilai Return on Investment (ROI) sebelum dan seudah pajak berturut-turut sebesar 24% dan 18%, nilai Pay Out Time sebelum dan sesudah pajak berturut-turut adalah 4,1 tahun dan 5,4 tahun,  nilai Break Even Point (BEP) sebesar 58,14%, dan nilai Shut Down Point (SDP) sebesar 27%. Berdasarkan hasil perhitungan maka Pra Rancangan Pabrik Kimia Pembuatan Biodiesel Berbahan Baku Minyak Jelantah dengan Katalis KOH Kapasitas 37.000 Ton/tahun layak untuk didirikan.
ANALISA EKONOMI PRA RANCANGAN PABRIK HAND SANITIZER ANTISEPTIC DARI TANAMAN TOGA KUNYIT (CURCUMA LONGA) Eka Farah Dewi Firda Ainurohmah; Galuh Citra Cahya Rohmana; Rafdi Ramadhan Amrozi; Tri Endang Prasasti; Profiyanti Hermien Suharti
DISTILAT: JURNAL TEKNOLOGI SEPARASI Vol 8, No 1 (2022): Maret 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v8i1.306

Abstract

Pendirian pabrik hand sanitizer merupakan salah satu solusi untuk mengatasi virus yang semakin bermacam-macam bentuknya dan semakin tidak terkendali. Dengan berdirinya pabrik hand sanitizer ini dapat menunjang kebutuhan antiseptik untuk mengatasi virus yang semakin banyak. Pabrik hand sanitizer ini menggunakan bahan baku tanaman toga kunyit (curcuma longa) dengan kapasitas pabrik 14.000 ton/tahun. Pabrik hand sanitizer direncanakan berbentuk Perseroan Terbatas (PT) dan didirikan di kota Gresik. Pabrik direncanakan beroperasi selama 330 hari dalam setahun dan 24 jam per hari dengan jumlah pegawai 168 orang. Hasil analisa ekonomi menunjukkan bahwa Total Capital Investment (TCI) pabrik hand sanitizer ini sebesar Rp 135.189.298.143, sedangkan Total Production Cost (TPC) sebesar Rp 110.373.517.192. Hasil perhitungan yang telah dilakukan menunjukkan bahwa Laba kotor yang akan diperoleh sebesar Rp 131.104.748.408 dan untuk laba bersih sebesar Rp 78.662.849.045. Dengan demikian, laju pengembalian modal Return On Investment (ROI) sebelum pajak sebesar 97%, sedangkan setelah pajak sebesar 58%. Lama pengembalian modal Pay Out Time (POT) 1,7 tahun serta Break Event Point (BEP) sebesar 44 %.