ASEAN Journal of Chemical Engineering最新文献_第6页

Enhancement of Delignification and Glucan Content of Sugarcane Bagasse by Alkali Pretreatment for Bioethanol Production 碱预处理提高甘蔗蔗渣生物乙醇脱木素和葡聚糖含量

ASEAN Journal of Chemical Engineering Pub Date : 2021-12-30 DOI: 10.22146/ajche.59093

K. Wunna, Kiohiko Nakasaki, J. Auresenia, L. Abella, Peg-asa Gaspilo

引用次数: 0

Submerged Membrane Photo Reactor (SMPR) with Simultaneous Photo Degradation and TiO2 Catalyst Recovery for Efficient Dyes Removal 同时光降解和TiO2催化剂回收的浸没膜光反应器(SMPR)高效脱除染料

ASEAN Journal of Chemical Engineering Pub Date : 2021-12-30 DOI: 10.22146/ajche.65952

D. Ariyanti, F. Wicaksana, Wei Gao

{"title":"Submerged Membrane Photo Reactor (SMPR) with Simultaneous Photo Degradation and TiO2 Catalyst Recovery for Efficient Dyes Removal","authors":"D. Ariyanti, F. Wicaksana, Wei Gao","doi":"10.22146/ajche.65952","DOIUrl":"https://doi.org/10.22146/ajche.65952","url":null,"abstract":"In this study, a polyvinylidene difluoride (PVDF) hollow fiber membrane module incorporated with TiO2 was submerged into a photocatalytic reactor to create a hybrid photocatalysis with membrane separation process (a submerged membrane photoreactor, SMPR), for advanced dyes wastewater treatment. The SMPR performance was assessed by the degradation of single component Rhodamine B (RhB) and degradation of mixed dyes (RhB and Methyl orange (MO)) in a binary solution. Several operational parameters such as the amount of catalyst loading, permeate flux, and the effect of aeration were studied. Fouling tendency on the membrane was also investigated to determine the optimum operating conditions. The results show that the synergetic effect of the low catalyst loading and permeate flux creates the environment for optimum light penetration for high photocatalytic activity as the hybrid system with low catalyst loading (0.5 g/L) and 66 L/m2h of flux with aeration at 1.3 L/min has proven to increase the photocatalysis performance by 20% with additional catalyst recovery. In addition, applying the low catalyst loading and flux permeate with aeration brings minimal fouling problems.","PeriodicalId":8490,"journal":{"name":"ASEAN Journal of Chemical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42449001","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}

引用次数: 0

Erianthus Plant: A Rich Silica Source for Extraction of Amorphous Silica 鸢尾植物:提取非晶二氧化硅的富硅源

ASEAN Journal of Chemical Engineering Pub Date : 2021-12-30 DOI: 10.22146/ajche.63625

Thet Mya Mya Sein, E. Aung

引用次数: 0

Optimization of Anthocyanin Extraction from Cockspur Coral (Erythrina Crista-Galli L.) Petals with Microwave-Assisted Extraction (MAE) using Response Surface Methodology 响应面法优化刺珊瑚花瓣花青素的微波辅助提取工艺

ASEAN Journal of Chemical Engineering Pub Date : 2021-12-30 DOI: 10.22146/ajche.63393

A. Damayanti, B. Triwibowo, M. Megawati, Miftahuddin Azhari, Sandra Anggita Fadriana

{"title":"Optimization of Anthocyanin Extraction from Cockspur Coral (Erythrina Crista-Galli L.) Petals with Microwave-Assisted Extraction (MAE) using Response Surface Methodology","authors":"A. Damayanti, B. Triwibowo, M. Megawati, Miftahuddin Azhari, Sandra Anggita Fadriana","doi":"10.22146/ajche.63393","DOIUrl":"https://doi.org/10.22146/ajche.63393","url":null,"abstract":"Cockspur coral (Erythrina crista-galli L) petals are flowers that contain anthocyanins and active compounds of flavonoids and tannins. This study aims to determine the optimum conditions for the anthocyanin extraction process of cockspur coral petals using Microwave-Assisted Extraction (MAE), analyzed through the Response Surface Method (RSM). This process uses ethanol-hydrochloric acid solvents and a Box-Behnken experimental design involving three factors, namely the solvent ratios (w/v) (1:5, 1:15, and 1:25), microwave powers (300, 450, and 600 watts), and extraction times (3, 9, and 15 minutes). As a result, the second-order polynomial model was enhanced and sufficient to explain the variation of the data that denoted the significant correlation with the independent variables and the response. Derringer's desired function methodology was used for optimizing studies and generated ideal conditions for each or combined an independent variable. The optimum anthocyanin extract of 5.82 mg/L was obtained at a power condition of 325,5 Watts, an extraction time of 3.05 minutes, and a solvent ratio of 20.5. Meanwhile, the operating conditions at a power of 310.8 Watts, a time of 14.94 minutes, and a solvent ratio of 24.96 resulted in the optimum color intensity (IC) of 1040.26. In the meantime, the optimum antioxidant activity was obtained at a power of 585.97 Watts, a time of 4.93 minutes, and a solvent ratio of 5.43 with IC50 of 0.115.","PeriodicalId":8490,"journal":{"name":"ASEAN Journal of Chemical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45309033","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}

引用次数: 1

Artificial Neural Network (ANN) Analysis of Co-pyrolysis of Waste Coconut Husk and Laminated Plastic Packaging 废椰壳与层压塑料包装共热解过程的人工神经网络分析

ASEAN Journal of Chemical Engineering Pub Date : 2021-12-30 DOI: 10.22146/ajche.69521

J. Olalo

{"title":"Artificial Neural Network (ANN) Analysis of Co-pyrolysis of Waste Coconut Husk and Laminated Plastic Packaging","authors":"J. Olalo","doi":"10.22146/ajche.69521","DOIUrl":"https://doi.org/10.22146/ajche.69521","url":null,"abstract":"Co-pyrolysis of plastic with biomass was used in the possible mitigation of environmental health problems associated with plastic waste. The pyrolysis method possessed the highest solution in the reduction of waste problems. Fuel oil can be produced through the pyrolysis of plastic and biomass waste. Many researchers used pyrolysis technology to produce a suitable amount of pyrolytic oil through different optimization techniques. This study will predict the percentage mass oil yield using an artificial neural network. It uses an input layer, hidden layer and an output layer. Three input factors for the input layer were (i) temperature, (ii) particle size, and (iii) percentage coconut husk. The structure has one hidden layer with two neurons. The artificial neural network was designed to predict the percentage oil yield after 15 pyrolysis runs set by the Box-Behnken design of the experiment. Percentage oil yields after pyrolysis were calculated. Results showed that temperature and percentage of coconut husk significantly influenced the percentage oil yield. Predicted values from simulation in the artificial neural network showed a good agreement through a correlation coefficient of 99.5%. The actual percentage oil yield overlaps the predicted values, which ANN demonstrates as a viable solution.","PeriodicalId":8490,"journal":{"name":"ASEAN Journal of Chemical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42567796","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}

引用次数: 2

Evaluation of Drying Air Conditions for Antiozonant Wax Drying Process in the Spray Drying Tower 喷雾干燥塔防臭氧蜡干燥工艺干燥空气条件评价

ASEAN Journal of Chemical Engineering Pub Date : 2021-12-30 DOI: 10.22146/ajche.64352

M. Christwardana, Ifa Miftahushudury

引用次数: 0

Recent Development of Biomass Conversion using Ionic Liquid-based Processes 基于离子液体的生物质转化过程的最新进展

ASEAN Journal of Chemical Engineering Pub Date : 2021-12-30 DOI: 10.22146/ajche.69552

M. Zunita, Risha Diah Rhamadhani

引用次数: 10

Comparison of Microwave-Assisted Extraction to Soxhlet Extraction of Mango Seed Kernel Oil using Ethanol and n-Hexane as Solvents 以乙醇和正己烷为溶剂微波辅助提取与索氏提取芒果籽油的比较

ASEAN Journal of Chemical Engineering Pub Date : 2021-12-30 DOI: 10.22146/ajche.63533

June Neil G. Balacuit, Jollana Dianne A. Guillermo, R. J. Buenafe, A. Soriano

{"title":"Comparison of Microwave-Assisted Extraction to Soxhlet Extraction of Mango Seed Kernel Oil using Ethanol and n-Hexane as Solvents","authors":"June Neil G. Balacuit, Jollana Dianne A. Guillermo, R. J. Buenafe, A. Soriano","doi":"10.22146/ajche.63533","DOIUrl":"https://doi.org/10.22146/ajche.63533","url":null,"abstract":"Mango seed kernel oil was extracted by Soxhlet Extraction (SE) and Microwave-Assisted Extraction (MAE) with ethanol and n-hexane as extraction solvents. To optimize the extraction condition for SE, the temperature was set to 90°C for ethanol and 80°C for n-hexane with varying solvent-to-feed ratios (S/F ratio) of 75/12, 75/10, and 60/6 mL/g. As for MAE, the same S/F ratios were considered. Extraction was done for 5, 10, and 15 minutes with microwave power levels of 120 and 240 W. It was found out that the highest yield per extraction process for SE was: 18.00±0.25 % and 9.38±2.03 % using ethanol and n-hexane, respectively; and 6.69±0.05 % and 4.68±0.06 %using ethanol and n-hexane, respectively for MAE. It was also noted that MAE, with the microwave power level of 120 W has less extraction time for about 15 minutes as compared to SE of 8 hours. Also, the best S/F ratio in this study is 60/6 for all processes. In oil quality determination, the oil extracted was examined through several tests such as FTIR, GC-MS, acid value, % FFA, iodine value, saponification value, and melting point. It was noted that oil extracted in ethanol has a better yield compared to that of n-hexane but the oil extracted using n-hexane would provide superior quality.","PeriodicalId":8490,"journal":{"name":"ASEAN Journal of Chemical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44257497","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}

引用次数: 1

A Kinetic Study of Manganese Leaching from Low-Grade Psilomelane Ore by Acetic-Tannic Acid Lixiviant 醋酸-单宁浸出剂浸出低品位硅藻土中锰的动力学研究

ASEAN Journal of Chemical Engineering Pub Date : 2021-12-30 DOI: 10.22146/ajche.64285

W. Aryani, Astria Gesta Anggraini, F. Bahfie, U. Herlina, M. Al Muttaqii, E. Prasetyo

{"title":"A Kinetic Study of Manganese Leaching from Low-Grade Psilomelane Ore by Acetic-Tannic Acid Lixiviant","authors":"W. Aryani, Astria Gesta Anggraini, F. Bahfie, U. Herlina, M. Al Muttaqii, E. Prasetyo","doi":"10.22146/ajche.64285","DOIUrl":"https://doi.org/10.22146/ajche.64285","url":null,"abstract":"Kinetic leaching of psilomelane using tannic acid as reductant and acetic acid as an acidic modifier is investigated in terms of tannic acid and acetic acid concentration, solid-liquid ratio, particle size and temperature. Kinetic modelling using three models: shrinking core, shrinking particle, and diffusion-interface transfer model revealed that at room temperature leaching (30 °C), experimental data are best modelled using diffusion-interface transfer model, indicating the dissolution of Mn is more affected by reaction rate among reactants and their concentration in bulk volume rather than by transfer across the boundary layer. At higher temperatures (≥ 50 °C), the shrinking particle model fits the experimental data best, suggesting the prominence of the diffusion process boundary layer. The apparent activation energy obtained at two temperatures were 13.1 and 52.7 kJ/mol for lower and higher temperatures. Plot between rate constant and concentration yields reaction order to be 1.28 for tannic acid and 0.73 for acetic acid. A semi-empirical model for each temperature range is proposed to describe the overall manganese leaching efficiency.","PeriodicalId":8490,"journal":{"name":"ASEAN Journal of Chemical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47920505","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}

引用次数: 0

The Effect of Niobium Addition on Mechanical Properties and Corrosion Resistance of a Medical Grade SS316L 添加铌对医用SS316L力学性能和耐蚀性的影响

ASEAN Journal of Chemical Engineering Pub Date : 2021-12-30 DOI: 10.22146/ajche.63778

I. N. Jujur, S. Susilowati, S. Roseno, A. H. S. Wargadipura

{"title":"The Effect of Niobium Addition on Mechanical Properties and Corrosion Resistance of a Medical Grade SS316L","authors":"I. N. Jujur, S. Susilowati, S. Roseno, A. H. S. Wargadipura","doi":"10.22146/ajche.63778","DOIUrl":"https://doi.org/10.22146/ajche.63778","url":null,"abstract":"To improve mechanical properties, especially elongation, of as-cast medical grade 316L stainless steel, niobium (Nb) was introduced into the alloys, followed by solution heat treatment. Alloying was performed using a 250 kg air induction melting furnace with duplex raw materials and ferronickel. Heat treatment using a solution at 1040 oC, with a holding time of 45 minutes, and water quenching was used. The sample was tested using hardness and ultimate tensile machines. Corrosion tests with simulated body fluids were carried out using media with similar corrosion conditions to human blood. Microstructure observations were performed optically. The results show that the addition of Nb increases the hardness of medical grade 316L stainless steel by 6% compared to the unalloyed steel, both before and after heat treatment. The addition of Nb increases the tensile strength by 8% compared to non-heat treated steel and increases the elongation before and after heat treatment by 8% and 5%, respectively. However, the corrosion rate of the material with Nb is higher than without the addition of Nb. Nb as a carbide former improves the mechanical properties of medical grade 316L stainless steel but adversely affects its corrosion resistance","PeriodicalId":8490,"journal":{"name":"ASEAN Journal of Chemical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48618188","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}

引用次数: 0