Pub Date : 2021-10-29DOI: 10.31942/inteka.v6i2.5510
I. Hartati, Salsa Erna Setiawati, Suwardiyono Suwardiyono
Pengolahan daging buah labu kuning menjadi tepung melalui proses pengeringan dapat meningkatkan umur simpan produk, mempermudah penggunaan dan pengolahannya menjadi berbagai produk lanjutan, mempermudah proses penyimpanan serta dapat digunakan untuk berbagai keperluan. Penelitian ini bertujuan untuk mengkaji pengaruh suhu pada proses pengeringan daging buah labu kuning serta memvalidasi model kinetika lapis tipis Lewis, Henderson Pabis, Page, Midili dan Two Term menggunakan data eksperimen pengeringan daging buah labu kuning. Proses pengeringan dilakukan menggunakan pengering tipe rak pada suhu 60-70 . Hasil penelitian menunjukkan jika proses pengeringan pada suhu 70 selama 165 menit merupakan kondisi proses pengeringan yang dianggap relatif baik karena mampu menghasilkan produk dengan nilai moisture ratio yang rendah yakni 0,04. Berdasarkan nilai RSS-nya, model kinetika pengeringan Midili merupakan model kinetika pengeringan lapis tipis yang memiliki kesesuaian tertinggi dengan data eksperimen proses pengeringan puree labu dibandingkan model kinetika lapis tipis Lewis, Henderson Pabis, Page, dan Two Term. Nilai konstanta kinetika pengeringan puree labu kuning adalah 9.10-8- 2,4.10-71/menit untuk proses pada suhu 60-70 .Kata kunci: labu kuning, model kinetika, Midili, lapis tipis
{"title":"KINETIKA PENGERINGAN LAPIS TIPIS PUREE LABU KUNING (Cucurbita moschata)","authors":"I. Hartati, Salsa Erna Setiawati, Suwardiyono Suwardiyono","doi":"10.31942/inteka.v6i2.5510","DOIUrl":"https://doi.org/10.31942/inteka.v6i2.5510","url":null,"abstract":"Pengolahan daging buah labu kuning menjadi tepung melalui proses pengeringan dapat meningkatkan umur simpan produk, mempermudah penggunaan dan pengolahannya menjadi berbagai produk lanjutan, mempermudah proses penyimpanan serta dapat digunakan untuk berbagai keperluan. Penelitian ini bertujuan untuk mengkaji pengaruh suhu pada proses pengeringan daging buah labu kuning serta memvalidasi model kinetika lapis tipis Lewis, Henderson Pabis, Page, Midili dan Two Term menggunakan data eksperimen pengeringan daging buah labu kuning. Proses pengeringan dilakukan menggunakan pengering tipe rak pada suhu 60-70 . Hasil penelitian menunjukkan jika proses pengeringan pada suhu 70 selama 165 menit merupakan kondisi proses pengeringan yang dianggap relatif baik karena mampu menghasilkan produk dengan nilai moisture ratio yang rendah yakni 0,04. Berdasarkan nilai RSS-nya, model kinetika pengeringan Midili merupakan model kinetika pengeringan lapis tipis yang memiliki kesesuaian tertinggi dengan data eksperimen proses pengeringan puree labu dibandingkan model kinetika lapis tipis Lewis, Henderson Pabis, Page, dan Two Term. Nilai konstanta kinetika pengeringan puree labu kuning adalah 9.10-8- 2,4.10-71/menit untuk proses pada suhu 60-70 .Kata kunci: labu kuning, model kinetika, Midili, lapis tipis","PeriodicalId":133390,"journal":{"name":"Jurnal Inovasi Teknik Kimia","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121509741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gas CO2 atau gas asam (sour gas) merupakan salah satu kandungan dari gas alam yang sifatnya sebagai kontaminan. Adanya kandungan gas CO2 yang tinggi didalam gas alam perlu dilakukan treatment khusus dalam menghilangan kandungan gas asam (sour gas) tersebut dari gas alam dimana proses penghilangan gas asam dari gas alam disebut proses Sweetening. Proses Absorspi gas CO2 merupakan metode yang sering dilakukan. Penelitian ini bertujuan mengetahui pengaruh laju alir absorben dan waktu kontak terhadap konsentrasi CO2 yang di serap. Metode yang dilakukan dalam penelitian ini yaitu dengan perancangan alat yang bisa menunujukan proses absorpsi CO2. Variabel penelitian yang digunakan memvariasikan laju alir absorben 4,95 ml/s, 7,26 ml/s, 10,75 ml/s serta waktu kontak 2,4,6,8 menit dengan menggunakan absorben K2CO3 dan Gas alam yang digunakan compress Natural Gas CNG. Dari hasil penelitan laju alir Absorbenyang paling baik didapat pada 10,75 ml/s dengan penyerapan CO2 sebesar 69,45 %. Waktu kontak pada setiap waktu tidak berpengaruh banyak terhadap konsentarsi CO2 yang terserap . Kata kunci: absorben, Sour gas, gas alam, laju alir AbstractCO2 gas or acid gas (sour gas) is one of the contents of natural gas which is a contaminant. The presence of high CO2 gas content in natural gas requires special treatment to remove the sour gas content from natural gas where the process of removing acid gas from natural gas is called the Sweetening process. The CO2 gas absorption process is a method that is often used. This study aims to determine the effect of absorbent flow rate and contact time on the absorbed CO2 concentration. The method used in this research is to design a tool that can show the CO2 absorption process. The research variables used varied the absorbent flow rate of 4.95 ml/s, 7.26 ml/s, 10.75 ml/s and a contact time of 2,4,6,8 minutes using K2CO3 absorbent and natural gas used compressed Natural CNG gas. From the research results, the best absorbent flow rate was obtained at 10.75 ml/s with CO2 absorption of 69.45%. Contact time at any time did not have much effect on the concentration of CO2 absorbed. Keywords: absorbent, sour gas, natural gas, flow rate
{"title":"PENGARUH LAJU ALIR ABSORBEN DAN WAKTU KONTAK K2CO3 TERHADAP PENYERAPAN CO2 YANG TERKANDUNG DALAM GAS ALAM","authors":"Muhrinsyah Fatimura, Rully Masriatini, Reno Fitriyanti","doi":"10.31942/inteka.v6i2.5506","DOIUrl":"https://doi.org/10.31942/inteka.v6i2.5506","url":null,"abstract":"Gas CO2 atau gas asam (sour gas) merupakan salah satu kandungan dari gas alam yang sifatnya sebagai kontaminan. Adanya kandungan gas CO2 yang tinggi didalam gas alam perlu dilakukan treatment khusus dalam menghilangan kandungan gas asam (sour gas) tersebut dari gas alam dimana proses penghilangan gas asam dari gas alam disebut proses Sweetening. Proses Absorspi gas CO2 merupakan metode yang sering dilakukan. Penelitian ini bertujuan mengetahui pengaruh laju alir absorben dan waktu kontak terhadap konsentrasi CO2 yang di serap. Metode yang dilakukan dalam penelitian ini yaitu dengan perancangan alat yang bisa menunujukan proses absorpsi CO2. Variabel penelitian yang digunakan memvariasikan laju alir absorben 4,95 ml/s, 7,26 ml/s, 10,75 ml/s serta waktu kontak 2,4,6,8 menit dengan menggunakan absorben K2CO3 dan Gas alam yang digunakan compress Natural Gas CNG. Dari hasil penelitan laju alir Absorbenyang paling baik didapat pada 10,75 ml/s dengan penyerapan CO2 sebesar 69,45 %. Waktu kontak pada setiap waktu tidak berpengaruh banyak terhadap konsentarsi CO2 yang terserap . Kata kunci: absorben, Sour gas, gas alam, laju alir AbstractCO2 gas or acid gas (sour gas) is one of the contents of natural gas which is a contaminant. The presence of high CO2 gas content in natural gas requires special treatment to remove the sour gas content from natural gas where the process of removing acid gas from natural gas is called the Sweetening process. The CO2 gas absorption process is a method that is often used. This study aims to determine the effect of absorbent flow rate and contact time on the absorbed CO2 concentration. The method used in this research is to design a tool that can show the CO2 absorption process. The research variables used varied the absorbent flow rate of 4.95 ml/s, 7.26 ml/s, 10.75 ml/s and a contact time of 2,4,6,8 minutes using K2CO3 absorbent and natural gas used compressed Natural CNG gas. From the research results, the best absorbent flow rate was obtained at 10.75 ml/s with CO2 absorption of 69.45%. Contact time at any time did not have much effect on the concentration of CO2 absorbed. Keywords: absorbent, sour gas, natural gas, flow rate","PeriodicalId":133390,"journal":{"name":"Jurnal Inovasi Teknik Kimia","volume":"16 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131491781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gliserol adalah produk samping yang dihasilkan dari proses pembuatan biodiesel. Karena peningkatan produksi biodiesel, utilisasi gliserol yang melimpah menjadi asetin berpeluang dilakukan karena manfaat asetin sebagai sumber bahan baku untuk material lainnya yang bernilai lebih. Penelitian ini bertujuan untuk membuat katalis grafena oksida dari multi-walled carbon nanotubes (MWCNT) dengan menggunakan metode hummers termodifikasi. Karakterisasi katalis GO dilakukan dengan menggunakan uji X-Rays Diffraction (XRD) dan Scanning Electron Microscope-Energi Dispersive X-ray (SEM-EDX). Aktivitas katalitik pada asetilasi gliserol menunjukkan konversi yang tinggi mencapai 94% pada suhu 110°C dalam 2 jam reaksi dengan menggunakan katalis 3% berat. Kata kunci: Asetilasi, Gliserol, Grafena Oksida, Metode Hummers Termodifikasi AbstractGlycerol is a by-product of biodiesel production. Due to the increase in biodiesel production, the utilization of abundant glycerol into acetin has the opportunity to be carried out because of the benefits of acetin as a source of raw material for other materials of higher value. This study aims to prepare graphene oxide catalysts from multi-walled carbon nanotubes (MWCNT) using the modified Hummers method. The characterizations of GO catalyst were assessed using X-Rays Diffraction (XRD) and Scanning Electron Microscope-Energi Dispersive X-ray (SEM-EDX). The catalytic activity of glycerol acetylation showed a high conversion reaching 94% at 110°C in 2 hours of reaction using a 3% by weight catalyst.
甘油是生物柴油生产过程中副产品。由于生物柴油产量的增加，由于乙炔作为其他更有价值的材料的原料来源而成为可能的。这项研究的目的是利用改良的悍马方法制造多层碳纳米管的氧化石墨烯。催化剂清单的定义特征是使用x射线衍射测试和扫描电子显微扫描x射线(SEM-EDX)。katalitik活动高达到94%的甘油乙酰化转换显示两小时后在110°C的温度下用催化剂反应重3%。关键词:乙炔、甘油、一氧化石墨、一种修改过的Hummers方法abctglycerol是一种逆向生物柴油生产。由于生物柴油生产的增加，乙醇对乙醇的消耗有机会被考虑，因为乙醇的积累是一种原始材料的来源。这一研究是为了准备多面体碳纳米管的致致致致致致致致致致致致。catalyst的特征是用x射线衍射和扫描电子微探测仪x射线检查。catalytic活动》glycerol acetylation那里a high conversion伸向94%在110°C在2小时的反应用加泰罗尼亚a:重量的3%。
{"title":"KATALIS KARBON YANG DIBUAT DENGAN METODE HUMMERS TERMODIFIKASI UNTUK ASETILASI GLISEROL","authors":"Nur Hidayati, Wahib Khoiruddin, Isnadiah Endang Mastuti, Wahyu Devi Satna Pambudi","doi":"10.31942/inteka.v6i2.5509","DOIUrl":"https://doi.org/10.31942/inteka.v6i2.5509","url":null,"abstract":"Gliserol adalah produk samping yang dihasilkan dari proses pembuatan biodiesel. Karena peningkatan produksi biodiesel, utilisasi gliserol yang melimpah menjadi asetin berpeluang dilakukan karena manfaat asetin sebagai sumber bahan baku untuk material lainnya yang bernilai lebih. Penelitian ini bertujuan untuk membuat katalis grafena oksida dari multi-walled carbon nanotubes (MWCNT) dengan menggunakan metode hummers termodifikasi. Karakterisasi katalis GO dilakukan dengan menggunakan uji X-Rays Diffraction (XRD) dan Scanning Electron Microscope-Energi Dispersive X-ray (SEM-EDX). Aktivitas katalitik pada asetilasi gliserol menunjukkan konversi yang tinggi mencapai 94% pada suhu 110°C dalam 2 jam reaksi dengan menggunakan katalis 3% berat. Kata kunci: Asetilasi, Gliserol, Grafena Oksida, Metode Hummers Termodifikasi AbstractGlycerol is a by-product of biodiesel production. Due to the increase in biodiesel production, the utilization of abundant glycerol into acetin has the opportunity to be carried out because of the benefits of acetin as a source of raw material for other materials of higher value. This study aims to prepare graphene oxide catalysts from multi-walled carbon nanotubes (MWCNT) using the modified Hummers method. The characterizations of GO catalyst were assessed using X-Rays Diffraction (XRD) and Scanning Electron Microscope-Energi Dispersive X-ray (SEM-EDX). The catalytic activity of glycerol acetylation showed a high conversion reaching 94% at 110°C in 2 hours of reaction using a 3% by weight catalyst.","PeriodicalId":133390,"journal":{"name":"Jurnal Inovasi Teknik Kimia","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115044465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-29DOI: 10.31942/inteka.v6i2.5503
P. Paryanto, S. H. Pranolo, A. Susanti
Technological advance leads the natural dyes to be eroded by the synthetic one. Synthetic colorant has advantages of salient, more uniform color and more practical use. Meanwhile, the disadvantage of it is much metal content harmful to the environment. The natural colorant is colorant (pigment) derived from plant, animal or mineral sources. The advantage of natural dyes is that it is more environment-friendly because it is not poisonous and safe for health. The disadvantage of it is storage difficulty. When natural dyes in liquid form is stored too long, it will be decomposed easily. For that reason, it should be stored in powder form.The method used to get natural dyes was extraction with a batch manner. The extraction was carried out with basic material-to-solvent ratios of 1:10, 1:7, and 1:5. The basic materials used were mangrove spesies rhizopora stylosa, Soga Tingi, and Indigofera. The best extract was obtained with a ratio of 1:5 for all basic materials. The powder was prepared by feeding the extracting solvent into a spray dryer so that the natural colorant powder was obtained. The application of colorant powder was used at 1 gram/100 ml, 2 gram/100 ml, 2 gram/100 ml, 4 gram/100 ml, and 5 gram/100 ml. The immersing with natural colorant was conducted in 2 conditions: extract and powder are immersing were carried out 5 times with each submerging of 15 minutes and dried. Then, fixation (color-locking) was done to batik. The fixer employed was tunjung (changing the color of batik into the darker one), alum (maintaining the batik’s color), and lime (change batik color into the brighter one). The fixated batik cloth was then examined for its fading against washing using launder meter and against rubbing using crock meter. The result of the examination was analyzed using a staining scale and greyscale. The examination using the staining scale was divided into 2: wet and dry rubbings. From the result of the wet and dry rubbing test, it was obtained the best result with tingi colorant, alum fixer solution, and powder condition. Meanwhile, on the greyscale, it was obtained the best result with tingi colorant, alum fixer, and powder condition. So, it could be concluded that the optimum application of powder to batik cloth was 4 gram/100 ml water and 5 times immersing. The best result of fading resistance against washing and rubbing was tingi with alum fixer and in powder condition.Keywords – extraction, spray dryer, fixation, launderometer, and crockmeter
技术进步导致天然染料被合成染料侵蚀。合成着色剂具有突出、颜色均匀、实用性强等优点。同时，它的缺点是金属含量高，对环境有害。天然着色剂是指从植物、动物或矿物中提取的着色剂(色素)。天然染料的优点是对环境更友好，因为它没有毒性，对健康安全。缺点是储存困难。液态天然染料存放时间过长，容易分解。因此，它应该以粉末形式储存。提取天然染料的方法是分批提取。以1:10、1:7、1:5的基本料液比进行提取。所用的基本材料为红树植物茎尖根霉、紫竹和靛蓝。以1:5的比例得到最佳提取液。将提取溶剂放入喷雾干燥机中制备粉末，得到天然的着色剂粉末。着色剂粉末分别以1克/100毫升、2克/100毫升、2克/100毫升、4克/100毫升、5克/100毫升的剂量使用。天然着色剂浸泡分为2种情况:提取物和粉末浸泡5次，每次浸泡15分钟，并晾干。然后对蜡染进行固色(锁色)。使用的固化剂是tunjung(将蜡染的颜色变深)，明矾(保持蜡染的颜色)和石灰(将蜡染的颜色变亮)。然后用洗涤仪和瓦罐仪检测染色后蜡染布的耐水洗和耐摩擦褪色情况。检查结果用染色分级和灰度分级进行分析。用染色秤检查分为湿揉和干揉两种。干湿摩擦试验结果表明，以麻属着色剂、明矾固定液和粉末状条件为最佳条件。同时，在灰度级上，以麻属着色剂、明矾固定剂和粉末状条件下效果最好。由此得出，粉剂在蜡染布上的最佳用量为4 g /100 ml水，浸泡5次。用明矾固定剂和粉末状的麻麻抗水洗和摩擦褪色效果最好。关键词:萃取，喷雾干燥机，固定，洗衣仪，蒸煮仪
{"title":"THE APPLICATION OF NATURAL DYES TO BATIK USING MANGROVE SPESIES RHIZOPORA STYLOSA, SOGA TINGI (CERIOPSTAGAL) AND INDIGOFERA","authors":"P. Paryanto, S. H. Pranolo, A. Susanti","doi":"10.31942/inteka.v6i2.5503","DOIUrl":"https://doi.org/10.31942/inteka.v6i2.5503","url":null,"abstract":"Technological advance leads the natural dyes to be eroded by the synthetic one. Synthetic colorant has advantages of salient, more uniform color and more practical use. Meanwhile, the disadvantage of it is much metal content harmful to the environment. The natural colorant is colorant (pigment) derived from plant, animal or mineral sources. The advantage of natural dyes is that it is more environment-friendly because it is not poisonous and safe for health. The disadvantage of it is storage difficulty. When natural dyes in liquid form is stored too long, it will be decomposed easily. For that reason, it should be stored in powder form.The method used to get natural dyes was extraction with a batch manner. The extraction was carried out with basic material-to-solvent ratios of 1:10, 1:7, and 1:5. The basic materials used were mangrove spesies rhizopora stylosa, Soga Tingi, and Indigofera. The best extract was obtained with a ratio of 1:5 for all basic materials. The powder was prepared by feeding the extracting solvent into a spray dryer so that the natural colorant powder was obtained. The application of colorant powder was used at 1 gram/100 ml, 2 gram/100 ml, 2 gram/100 ml, 4 gram/100 ml, and 5 gram/100 ml. The immersing with natural colorant was conducted in 2 conditions: extract and powder are immersing were carried out 5 times with each submerging of 15 minutes and dried. Then, fixation (color-locking) was done to batik. The fixer employed was tunjung (changing the color of batik into the darker one), alum (maintaining the batik’s color), and lime (change batik color into the brighter one). The fixated batik cloth was then examined for its fading against washing using launder meter and against rubbing using crock meter. The result of the examination was analyzed using a staining scale and greyscale. The examination using the staining scale was divided into 2: wet and dry rubbings. From the result of the wet and dry rubbing test, it was obtained the best result with tingi colorant, alum fixer solution, and powder condition. Meanwhile, on the greyscale, it was obtained the best result with tingi colorant, alum fixer, and powder condition. So, it could be concluded that the optimum application of powder to batik cloth was 4 gram/100 ml water and 5 times immersing. The best result of fading resistance against washing and rubbing was tingi with alum fixer and in powder condition.Keywords – extraction, spray dryer, fixation, launderometer, and crockmeter","PeriodicalId":133390,"journal":{"name":"Jurnal Inovasi Teknik Kimia","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127868920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-29DOI: 10.31942/inteka.v6i2.5505
N. Indrayani, R. Rahmanto, Riri Sadiana
“Pemanfaatan material komposit pada saat ini semakin berkembang, seiring dengan meningkatnya penggunaan bahan tersebut yang semakin meluas mulai dari yang sederhana sampai sektor industri. Hal ini dikarenakan karakteristik material komposit mempunyai banyak kelebihan dibandingkan dengan jenis bahan lain yaitu ringan, kuat, tidak terpengaruh korosi dan mampu bersaing dengan logam, dengan tidak kehilangan karakteristik dan kekuatan mekanisnya. Penelitian ini bertujuan untuk mengetahui pengaruh variasi waktu sintering dan komposisi terhadap ketangguhan impak dan kekerasan komposit Eceng Gondok-PVC-LDPE. Bahan yang digunakan merupakan tanaman gulma dan limbah plastik. Proses pembuatan spesimen dilakukan dengan metode pressured sintering, yaitu dengan cara pembuatan serbuk, dan di screening 60 mesh. Selanjutnya serbuk di mixing dengan variasi komposisi perbandingan K1: EG 50%, PVC 10%, LDPE 40%; K2: EG 55%, PVC 10%, LDPE 35%; K3: EG 60%, PVC 10%, LDPE 30%; K4: EG 65%, PVC 10%, LDPE 25% dan K5: EG 70%, PVC 10%, LDPE 20% dan dikompaksi dengan tekanan 1,013 bar. Selanjutnya di sintering dengan temperatur 1800C. Pada penilitian ini variasi waktu sintering yaitu; 5 menit, 8 menit, 10 menit, 13 menit dan 15 menit. Sifat mekanik dilihat dari nilai kekerasan dan impak dengan menggunakan standar ISO 2039-1:2001, ISO 179-1:2010. Selain itu menganalisis morfologi dengan Scanning Electron Microscope (SEM). Pengujian untuk sifat kimia dilihat dengan analisis morfologi SEM. Berdasarkan hasil pengujian sifat mekanik didapatkan nilai kekerasan tertinggi dimiliki oleh komposit K2 sebesar 22.30 MPa dan 2.1 kJ/m2 untuk nilai impak.” Kata kunci: eceng gondok, komposit, LDPE, pressured sintering, PVC. Abstract“The utilization of composite materials nowadays is currently growing, along with the increasing use of these materials, which are expanding ranging from the small scale to the industrial sector. This is because the characteristics of composite materials have many advantages compared to other types of materials i.e. light, strong, not affected by corrosion and able to compete with metals without losing their mechanical characteristics and strength. This research aims to determine the effect of variations in sintering time and it’s composition against impact toughness and hardness of the Water Hyacinth-PVC-LDPE composite. The materials used are weeds and plastic waste. The process of specimen fabrication was performed by using pressured sintering method, i.e. by making it into powder and were screening by using screen 60 mesh. Furthermore, the powder were mixed with the variation of the composition K1: EG 50%, PVC 10%, LDPE 40%; K2: EG 55%, PVC 10%, LDPE 35%; K3: EG 60%, PVC 10%, LDPE 30%; K4: EG 65%, PVC 10%, LDPE 25% dan K5: EG 70%, PVC 10%, LDPE 20% and compacted with a pressure of 1,1013 bar. After that is sintering with temperature 180oC. In this research the sintering time variations is 5 minute, 8 minute, 10 minute, 13 minute and 15 minute. Mechanical properti
{"title":"ANALISIS PENGARUH VARIASI WAKTU SINTERING DAN KOMPOSISI TERHADAP SIFAT MEKANIK DAN MORFOLOGI KOMPOSIT ECENG GONDOK-PVC-LDPE","authors":"N. Indrayani, R. Rahmanto, Riri Sadiana","doi":"10.31942/inteka.v6i2.5505","DOIUrl":"https://doi.org/10.31942/inteka.v6i2.5505","url":null,"abstract":"“Pemanfaatan material komposit pada saat ini semakin berkembang, seiring dengan meningkatnya penggunaan bahan tersebut yang semakin meluas mulai dari yang sederhana sampai sektor industri. Hal ini dikarenakan karakteristik material komposit mempunyai banyak kelebihan dibandingkan dengan jenis bahan lain yaitu ringan, kuat, tidak terpengaruh korosi dan mampu bersaing dengan logam, dengan tidak kehilangan karakteristik dan kekuatan mekanisnya. Penelitian ini bertujuan untuk mengetahui pengaruh variasi waktu sintering dan komposisi terhadap ketangguhan impak dan kekerasan komposit Eceng Gondok-PVC-LDPE. Bahan yang digunakan merupakan tanaman gulma dan limbah plastik. Proses pembuatan spesimen dilakukan dengan metode pressured sintering, yaitu dengan cara pembuatan serbuk, dan di screening 60 mesh. Selanjutnya serbuk di mixing dengan variasi komposisi perbandingan K1: EG 50%, PVC 10%, LDPE 40%; K2: EG 55%, PVC 10%, LDPE 35%; K3: EG 60%, PVC 10%, LDPE 30%; K4: EG 65%, PVC 10%, LDPE 25% dan K5: EG 70%, PVC 10%, LDPE 20% dan dikompaksi dengan tekanan 1,013 bar. Selanjutnya di sintering dengan temperatur 1800C. Pada penilitian ini variasi waktu sintering yaitu; 5 menit, 8 menit, 10 menit, 13 menit dan 15 menit. Sifat mekanik dilihat dari nilai kekerasan dan impak dengan menggunakan standar ISO 2039-1:2001, ISO 179-1:2010. Selain itu menganalisis morfologi dengan Scanning Electron Microscope (SEM). Pengujian untuk sifat kimia dilihat dengan analisis morfologi SEM. Berdasarkan hasil pengujian sifat mekanik didapatkan nilai kekerasan tertinggi dimiliki oleh komposit K2 sebesar 22.30 MPa dan 2.1 kJ/m2 untuk nilai impak.” Kata kunci: eceng gondok, komposit, LDPE, pressured sintering, PVC. Abstract“The utilization of composite materials nowadays is currently growing, along with the increasing use of these materials, which are expanding ranging from the small scale to the industrial sector. This is because the characteristics of composite materials have many advantages compared to other types of materials i.e. light, strong, not affected by corrosion and able to compete with metals without losing their mechanical characteristics and strength. This research aims to determine the effect of variations in sintering time and it’s composition against impact toughness and hardness of the Water Hyacinth-PVC-LDPE composite. The materials used are weeds and plastic waste. The process of specimen fabrication was performed by using pressured sintering method, i.e. by making it into powder and were screening by using screen 60 mesh. Furthermore, the powder were mixed with the variation of the composition K1: EG 50%, PVC 10%, LDPE 40%; K2: EG 55%, PVC 10%, LDPE 35%; K3: EG 60%, PVC 10%, LDPE 30%; K4: EG 65%, PVC 10%, LDPE 25% dan K5: EG 70%, PVC 10%, LDPE 20% and compacted with a pressure of 1,1013 bar. After that is sintering with temperature 180oC. In this research the sintering time variations is 5 minute, 8 minute, 10 minute, 13 minute and 15 minute. Mechanical properti","PeriodicalId":133390,"journal":{"name":"Jurnal Inovasi Teknik Kimia","volume":"10 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116871457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-07DOI: 10.31942/INTEKA.V6I1.4452
Agung Sugiharto, Indah Pratiwi
{"title":"PEMBUTAN BRIKET DARI CAMPURAN SEKAM PADI DAN AMPAS TEBU MENGGUNAKAN METODE KARBONISASI DENGAN FURNACE","authors":"Agung Sugiharto, Indah Pratiwi","doi":"10.31942/INTEKA.V6I1.4452","DOIUrl":"https://doi.org/10.31942/INTEKA.V6I1.4452","url":null,"abstract":"","PeriodicalId":133390,"journal":{"name":"Jurnal Inovasi Teknik Kimia","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116777531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-07DOI: 10.31942/INTEKA.V6I1.4450
Iseh Muhammad Zaenal Afidin, Kholidah Kholidah
{"title":"ANALISIS KANDUNGAN NITRAT DAN NITRIT SERTA TOTAL BAKTERI COLIFORM PADA AIR SUNGAI DI PT.SUCOFINDO SEMARANG","authors":"Iseh Muhammad Zaenal Afidin, Kholidah Kholidah","doi":"10.31942/INTEKA.V6I1.4450","DOIUrl":"https://doi.org/10.31942/INTEKA.V6I1.4450","url":null,"abstract":"","PeriodicalId":133390,"journal":{"name":"Jurnal Inovasi Teknik Kimia","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129782595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-07DOI: 10.31942/INTEKA.V6I1.4455
Agung Sugiharto, I. Lestari
{"title":"BRIKET CAMPURAN AMPAS TEBU DAN SEKAM PADI MENGGUNAKAN KARBONISASI SECARA KONVENSIONAL SEBAGAI ENERGI ALTERNATIF","authors":"Agung Sugiharto, I. Lestari","doi":"10.31942/INTEKA.V6I1.4455","DOIUrl":"https://doi.org/10.31942/INTEKA.V6I1.4455","url":null,"abstract":"","PeriodicalId":133390,"journal":{"name":"Jurnal Inovasi Teknik Kimia","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115607956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-07DOI: 10.31942/INTEKA.V6I1.4454
W. Widarti, I. Hartati, Harianingsih Harianingsih, Farikha Maharani
{"title":"PEMBUATAN BUBUK BAYAM DENGAN METODE FOAM MAT DRYING","authors":"W. Widarti, I. Hartati, Harianingsih Harianingsih, Farikha Maharani","doi":"10.31942/INTEKA.V6I1.4454","DOIUrl":"https://doi.org/10.31942/INTEKA.V6I1.4454","url":null,"abstract":"","PeriodicalId":133390,"journal":{"name":"Jurnal Inovasi Teknik Kimia","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130552283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-05-07DOI: 10.31942/INTEKA.V6I1.4448
K. Haryani, Pradhipta Rizka Lakzita, Putri Puspita Sari
{"title":"MODIFIKASI TEPUNG SORGUM DENGAN METODE FERMENTASI MENGGUNAKAN BAKTERI ASAM LAKTAT Lactobacillus bulgaricus","authors":"K. Haryani, Pradhipta Rizka Lakzita, Putri Puspita Sari","doi":"10.31942/INTEKA.V6I1.4448","DOIUrl":"https://doi.org/10.31942/INTEKA.V6I1.4448","url":null,"abstract":"","PeriodicalId":133390,"journal":{"name":"Jurnal Inovasi Teknik Kimia","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115519583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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