Journal of Chemical Engineering & Process Technology最新文献

{"title":"PENGEMBANGAN POTENSI INDIGOFERA DENGAN PROSES KOMBINASI FERMENTASI AEROB-ANAEROB SEBAGAI ZAT WARNA ALAMI BATIK","authors":"Azafilmi Hakiim, D. A. Sari, Vita Efelina","doi":"10.33536/JCPE.V3I2.255","DOIUrl":"https://doi.org/10.33536/JCPE.V3I2.255","url":null,"abstract":"Teknik pewarnaan kain batik dapat dilakukan dengan zat warna sintetik atau zat warna alam (ZWA). Keberadaan banyaknya permintaan konsumen, mampu menggerser keberadaan zat warna alam. Keunggulan zat warna sintetik antara lain memberikan keuntungan ekonomi, efisiensi waktu dan warna yang dihasilkan beragam. Kelemahan penggunaan zat warna sintetik adalah dampak lingkungan yang dihasilkan. Kandungan bahan sintetik sukar diuraikan sehingga perlu diupayakan kembali penggunaan ZWA . Salah satunya berasal dari tanaman perdu yaitu indigofera tinctoria. Tujuan penelitian ini adalah sejauh mana pengaruh konsentrasi daun indigofera pada beda perlakuan proses fermentasi (aerob dan anaerob) dan perlakuan penggunaan fiksasi terhadap daya tahan pencucian, daya tawahan luntur dan daya tahan sinar matahari.Bahan baku sampel yaitu kain katun dan sutera yang dicelup dengan ZWA fermentasi indigofera pada konsentrasi daun indigo 1kg/5L dan 1kg/10L, kemudian dilanjutkan dengan pencelupan fiksasi/non fiksasi sebagai variable bebas dan variable terikat adalah uji daya tahan. Hasil uji ketahanan daya tahan pencucian, daya tahan luntur dan daya tahan sinar mtahari menunjukkan bahwa penggunaan konsentrasi memiliki kategori nilai yang tidak jauh berbeda. Sedangkan pada variable perlakuan fiksasi/non fiksasi diperoleh kategori nilai terbaik rata-rata pada perlakuan fermetasi aerob","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"148 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73631686","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}

{"title":"Corrosion Failure Analysis of Elbow in LPG Desulfurization Unit","authors":"Jianwen Z, Guoqing S, Chuansheng W","doi":"10.35248/2157-7048.19.10.395","DOIUrl":"https://doi.org/10.35248/2157-7048.19.10.395","url":null,"abstract":"The elbow plays a crucial role in changing the flow direction of the medium in pipeline system and is one of the most commonly used pipeline components in the oil and gas transportation. This paper focuses on the corrosive failure mechanism of the elbow of regeneration tower of LPG desulfurization unit in a refinery. Aiming at the failure elbow, based on the macro and micro perspectives, the physical laws of the inner layer of the elbow, including the distribution of corrosion holes and wall thickness, are summarized and analyzed. The further characterization methods were used to study the corrosion mechanism, including mechanical properties, metallographic examination, X-ray diffraction analysis (XRD), scanning electron microscopy (SEM) and energy spectrum analysis (EDS). Taking the thief hole as center, the elbow was divided into 4 rows. It is found that the maximum diameter was 21.1 mm while the minimum was 7.76 mm, and the vast majority of holes were 16 ~ 19 mm. The average size of the middle section was larger, meanwhile, possessed most holes over 19 mm. The corrosion thickness first increased then decreased along the flow direction and reached the maximum in completely destroyed area of the 1st and 2nd row. The corrosion thickness increased gradually along the flow direction of the 3rd and 4th row. Erosion corrosion is the main cause of elbow failure. Fluid erosion plays a dominant role in the failure process while electrochemical corrosion plays a dominant role in the formation of corrosion holes. Besides, the presence of heat-stable salts (HSS) also aggravates the corrosion of elbow.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"22 6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82668066","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}

{"title":"The Acid and Radiation Stability of Some Commercial Ion Exchangers","authors":"B. G., E. H., Emmott Jd","doi":"10.35248/2157-7048.19.10.394","DOIUrl":"https://doi.org/10.35248/2157-7048.19.10.394","url":null,"abstract":"","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"72 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74376922","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}

{"title":"A Numerical Model for Bubble Column Reactors: Prediction of the Fractional Gas Holdup by the Implementation of the Drift-Flux Model","authors":"A. Bahramian, S. Elyasi","doi":"10.35248/2157-7048.19.10.396","DOIUrl":"https://doi.org/10.35248/2157-7048.19.10.396","url":null,"abstract":"Comprehensive knowledge of hydrodynamics inside a reactor is crucial for the design and scale-up of bubble columns. Fractional gas holdup (αg) is an important parameter that should be obtained for the design of bubble column reactors. The estimation of this parameter depends mainly on experimental procedures. Drift-flux theory is one of the most practical and accurate models for calculating the gas holdup. Although many researchers have studied bubble column reactors, because of the limits of the experimental setting, there are few studies that have operated over a wide range of superficial gas velocities. In this work, a transient 3-D numerical simulation of upward air-water flow in the bubble column was performed over a wide range of superficial gas velocities (0.025-0.4 m/s) using the Eulerian-Eulerian model. The effect of the superficial gas velocity on the flow pattern was simulated, and two-phase flow regimes were classified into homogeneous, transition and heterogeneous regimes. Considering the importance of the drift-flux model, the values of the distribution parameter and the drift velocity were computed according to their definitions using the cross-sectional gas holdup and velocity profiles obtained via computational flow dynamic simulation. The results were verified against the experimental data, and a correlation is proposed for predicting the gas holdup.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84952421","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}

{"title":"Synthesis and Evaluation of Properties of a Novel Cationic Waterborne Polyurethane Finishing Agent","authors":"K. Ismoilov, W. Akram, S. Chauhan, Khilola Ergasheva, R. Artikboeva, Zulaykho Islomova, H. Quan","doi":"10.35248/2157-7048.19.10.398","DOIUrl":"https://doi.org/10.35248/2157-7048.19.10.398","url":null,"abstract":"There is a cationic group that makes sure waterborne polyurethane self-emulsify on the main or side chain of cationic waterborne polyurethane (CWPU), which brings excellent function to cationic polyurethane, simultaneously it reduces water resistance. In this research, the good stability of CWPU was prepared as well as the water resistance and softness of cationic waterborne polyurethane film was improved. Elasticity, extensibility, weight gain rate, contact angle, TG, and structure of polyurethane had been tested and evaluated. Also, emulsion stabilities of polyurethane were tested, including storage stability, high-temperature stability, freeze-thaw stability, electrolyte stability, acid stability, and dilution stability; In addition to that, particle size and its distribution were tested. The test showed that the emulsion stability of polyester polyurethane illustrated a good result, while the mechanical property, water resistance, and water repellency were poor. Moreover, mechanical property and water resistance of polyether polyurethane film were good, but high-temperature stability, acid and alkali resistant, and water repellency of emulsion showed poor. For the synthesis of polyurethane, mixed soft segments of polyester (PE2348) and polyether (ZC330) were used, when mass ratio of (PE2348) to (ZC330) is not less than 1, that helped to improve the emulsion stabilities, increased contact angle, decreased particle size. But the water-resistance of film weakened when mass ratios of PE2348 to ZC330 were increased and the mechanical property was poorer. TG showed that thermal stability became poor. The introduction of hydrophilic chain extender (N120) can reduce the water resistance and water repellency of polyurethane. When the mass fraction of N-methyl diethanolamine (MDEA) was about 6% to 7%, the smallest particle size was 61 nm, and the water repellency was larger. The increase of MDEA content would reduce the water-resistance of the film. Finally the effect of hydrophilic chain extender on waterborne polyurethane was studied.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81166699","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}

{"title":"Ionic Liquid-Based Process Development for Cobalt Recovery from Aqueous Streams","authors":"E. Othman, A. V. D. Ham, H. Miedema, S. Kersten","doi":"10.35248/2157-7048.19.10.397","DOIUrl":"https://doi.org/10.35248/2157-7048.19.10.397","url":null,"abstract":"Using the ionic liquid [P8888 +][Oleate-], liquid-liquid extraction has been studied to recover Co2+ from water. Extractionregeneration experiments were followed during five consecutive cycles with Na2CO3(aq) as regeneration solution. Over 99% of Co2+ was extracted and using 0.7-1 M Na2CO3(aq) the extracted Co2+ was recovered for 99% in the form of CoCO3(s). Co2+ transfer shifted from ion-pair extraction in the first cycle to ion-exchange in the successive cycles. Thus, the measurement of a single extraction–regeneration cycle is not sufficient to perceive conclusive information about the steady-state conditions of the process. In the context of the feasibility of the technology, four key aspects are addressed: extraction efficiency, recovery of the IL, loss of the IL, and the end product. Synopsis Cobalt extraction from aqueous using ionic liquid [P8888 +][oleate-] and cobalt recovery applying Na2CO3 solution as an efficient and sustainable regeneration strategy since it provides interesting end product for market with high regeneration efficiency.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91143679","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}

{"title":"High performance phosphite ligands containing various numbers of structural units for n-regioselective hydroformylation of olefins","authors":"Baoxin Zhang, D. Selent, Armin Börner","doi":"10.4172/2157-7048-C2-015","DOIUrl":"https://doi.org/10.4172/2157-7048-C2-015","url":null,"abstract":"","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83030237","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}

{"title":"Experimental study on diffusion combustion of high-speed hydrogen round microjets. Part I: Attach flame in subsonic flow","authors":"pSukon Phanichphantp","doi":"10.4172/2157-7048-C2-013","DOIUrl":"https://doi.org/10.4172/2157-7048-C2-013","url":null,"abstract":"","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"42 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72550285","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}

{"title":"On the features of estimating the coefficient of inhomogeneity of a loose mixture during the operation of a gravitational device","authors":"pAnna Kapranova, Ivan Verlokap","doi":"10.4172/2157-7048-C3-018","DOIUrl":"https://doi.org/10.4172/2157-7048-C3-018","url":null,"abstract":"","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"10 47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80822735","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}

{"title":"PEMBUATAN PUPUK ORGANIK CAIR DARI LIMBAH BIOGAS","authors":"Sentiyaki Sentiyaki, Andi Rina Ayu Astuti, Imam Fathurahman, Setyawati Yani, Mandasini Mandasini, N. Nurjannah, Zakir Sabara","doi":"10.33536/JCPE.V3I1.193","DOIUrl":"https://doi.org/10.33536/JCPE.V3I1.193","url":null,"abstract":"Pencemaran udara yang berasal dari emisi gas hasil pembakaran (ghp), termasuk karbon monoksida semakin meningkat sejalan dengan meningkatnya jumlah kendaraan bermotor. Daun trembesi memiliki potensi untuk menyerap polutan CO. Penelitian ini bertujuan untuk menghasilkan desain alat penyerap CO dari ektrak daun trembesi dan mengetauhi daya kerja alat tersebut terhadap emisi CO. Penelitian dilakukan dengan membuat alat yang berisi adsorben daun trembesi dalam beberapa lapisan dengan ketebalan yang berbeda, yaitu lapis 1, lapis 2 dan lapis 3. Selanjutnya dilakukan pengujian alat pada tipe karburator dan tipe injeksi dengan menggunakan alat Analisa Gas Buang (AGS-688). Hasil penelitian ini menunjukkan desain terbaik pada lapis 3 dengan daya serap emisi CO sebesar 17,69% untuk tipe karburator dan 28,13% untuk tipe injeksi.","PeriodicalId":15308,"journal":{"name":"Journal of Chemical Engineering & Process Technology","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73067729","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}