{"title":"Enhanced Removal of the Xenobiotic Surfactant Sodium Dodecyl Sulfate from Actual Nondomestic Wastewaters Using Immobilized Mixed Bacterial Cells","authors":"Aya A.Najim, Z. Ismail, K. K. Hummadi","doi":"10.15255/cabeq.2021.2017","DOIUrl":"https://doi.org/10.15255/cabeq.2021.2017","url":null,"abstract":"Cell immobilization has been proven to offer noticeable benefits over conventional biological systems using free cells, particularly for recalcitrant compounds. In this study, mixed bacterial cells were alternatively immobilized in sodium alginate (SA) and in sodium alginate-polyvinyl alcohol (SA – PVA) for biodegradation of sodium dodecyl sulfate (SDS). Synthetically prepared SDS-bearing aqueous solution (SWW), as well as actual automobile service station wastewater (AWW) and laundry wastewater (LWW) were used. The results revealed that high removal efficiencies were achieved after 48 h for both types of beads. When SDS concentration in SWW increased from 10 to 1000 mg L –1 , SDS degradation using both types of beads were decreased from 99.71 % to 85.12 % using SA beads, and from 99.63 % to 83.29 % using SA-PVA beads. The removal efficiency of SDS in the actual (AWW) were 94.91 % and 93.82 % using SA beads and SA-PVA beads, respectively. While, for SDS-bearing laundry (LWW), the removal efficiencies were 94.39 % and 92.04 % using SA beads and SA-PVA beads, respectively. No decline in the biodegradation capacity of immobilized consortium was noted over its recycling and reuse. Both hydrogel matrices lasted for up to five cycles in the actual wastewaters. These promising results confirmed the validity of using immobilized mixed cells as an efficient and cost-effective approach for SDS biodegradation in real industrial wastewaters.","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44195058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Experimental Investigation of Reactive Extraction of Levulinic Acid from Aqueous Solutions","authors":"Anuj Kumar, Diwakar Z. Shende, K. Wasewar","doi":"10.15255/cabeq.2021.2031","DOIUrl":"https://doi.org/10.15255/cabeq.2021.2031","url":null,"abstract":"The separation of levulinic acid from aqueous solutions is costly and non-ecofriendly in many cases. The major concerns are the low concentration of levulinic acid in fermentation broths and industrial downstreams. In this study, reactive extraction of levulinic acid from aqueous phase is proposed and its efficacy was investigated. Various extractants viz. tri-n-butyl phosphate, trioctylamine, and trioctylmethylammonium chloride along with i-octanol as a diluent were used. The extent of separation was investigated and various performance parameters like extraction efficiency, distribution coefficient, equilibrium complexation constant, and loading ratio were estimated. The number of transfer units, diffusivity, and mass transfer considerations were also discussed in the reactive separation system. Finally, the conceptual method was provided for the separation of levulinic acid using efficient reactive separation.","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46983111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mojtaba Sinaei Nobandegani, Tayebeh Darbandi, Mahdi Kheirinik, M. R. S. Birjandi, F. Shahraki, Liang Yu
{"title":"One-dimensional Modelling and Optimisation of an Industrial Steam Methane Reformer","authors":"Mojtaba Sinaei Nobandegani, Tayebeh Darbandi, Mahdi Kheirinik, M. R. S. Birjandi, F. Shahraki, Liang Yu","doi":"10.15255/cabeq.2021.1963","DOIUrl":"https://doi.org/10.15255/cabeq.2021.1963","url":null,"abstract":"M. Sinaei Nobandegani,a,* T. Darbandi,b M. Kheirinik,c M. R. Sardashti Birjandi,d F. Shahraki,d and L. Yua aChemical Technology, Luleå University of Technology, SE-971 87 Luleå, Sweden bLuleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science, Luleå, Sweden cPersian Gulf Star Oil Company, Bandar Abbas, Hormozgan Province, Iran dDepartment of Chemical Engineering, University of Sistan and Baluchestan, P.O. Box 98164-161, Zahedan, Iran","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42848201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Younes Amini, Ali Ghaednian-Jahromi, J. Karimi-Sabet, A. Dastbaz, A. Hassanvand
{"title":"CFD Simulation of He/CH4 Separation by Hyflon AD60X Membrane","authors":"Younes Amini, Ali Ghaednian-Jahromi, J. Karimi-Sabet, A. Dastbaz, A. Hassanvand","doi":"10.15255/cabeq.2021.1957","DOIUrl":"https://doi.org/10.15255/cabeq.2021.1957","url":null,"abstract":"Y. Amini,a,* A. Ghaednian-Jahromi,b J. Karimi-Sabet,a A. Dastbaz,c and A. Hassanvandd aNuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, Tehran, Iran bDepartment of Chemical Engineering, Sahand University of Technology, Tabriz, Iran cSchool of Chemical Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran dDepartment of Polymer Engineering, Faculty of Engineering, Lorestan University, Khorramabad, Iran","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47608969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Isolation and Performance Study of a Novel Lignin-degrading Strain","authors":"Wen Zhang, Z. Liu","doi":"10.15255/cabeq.2021.1939","DOIUrl":"https://doi.org/10.15255/cabeq.2021.1939","url":null,"abstract":"","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43293999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Adsorption of Tetracycline from Aqueous Solution by Aerobic Granular Sludge-based Biochar: Affecting Factors, Kinetics, Isotherms, and Mechanisms","authors":"Lilong Yan, Wanting Chen, Shuang Liu, Yaoqi Zheng, Jingyu Jiang, Yaqing Liu","doi":"10.15255/cabeq.2021.1959","DOIUrl":"https://doi.org/10.15255/cabeq.2021.1959","url":null,"abstract":"In this experiment, the influencing factors of tetracycline (TC) removal by adsorption with the aerobic granular sludge-based biochar (BC) were analyzed. In particular, the specific surface area, pore size distribution, and functional groups of the biochar were studied. In addition, the kinetics, isotherms, and diffusion models of TC removal were examined. The adsorption of TC reached a maximum (16.59 mg g -1 ) when the biochar carbonization temperature and time were 700 C and 2 h, respectively. With increasing initial TC concentration, the adsorption capacity of BC to TC increased gradually. The optimal pH value of TC adsorption with BC was 7.0, and a low concentration of salt was found to promote the adsorption of TC. The pseudo second-order kinetic model and Langmuir isotherm model were found to correlate well the adsorption of TC by BC. Both the internal diffusion and liquid film diffusion were the rate-controlling steps of the adsorption process. The alkali-modified BC was found to be the best adsorbent for TC.","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":"1 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://doi.org/10.15255/cabeq.2021.1959","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147912958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Campos, R. Kaspary, M. Rossi, T. A. M. Medeiros
{"title":"Biosynthesis of γ-Polyglutamic Acid by Bacillus licheniformis Through Submerged Fermentation (SmF) and Solid-state Fermentation (SSF)","authors":"V. Campos, R. Kaspary, M. Rossi, T. A. M. Medeiros","doi":"10.15255/cabeq.2021.1921","DOIUrl":"https://doi.org/10.15255/cabeq.2021.1921","url":null,"abstract":"Gamma-Polyglutamic acid (γ-PGA) was produced from fermentation processes by inoculating the bacterium Bacillus licheniformis on different substrates. In submerged fermentation (SmF), glycerol and glucose were used as the main carbon substrates while ammonium sulfate served to provide nitrogen. In solid-state fermentation (SSF), soybean was used as the main substrate. Tests carried out in an airlift bioreactor with B. licheniformis showed a maximum productivity of 0.789 g L–1 h–1 and a yield of 0.4 g g–1. Different soybean cultivars from the 2015 and 2016 crops were used in the SSF. The BRS 1001IPRO cultivar, from the 2016 crop, showed the highest production, i.e., 1.2 g L–1 of γ-PGA. This cultivar was subjected to different levels of milling (fine, intermediate and coarse). Coarsely milled grains increased γ-PGA production to 2.7 g L–1. Moreover, coarse milling made the internal nutrients of the grains available for fermentation and this particle size did not compromise aeration during fermentation.","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45058887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Prediction of Cement Compressive Strength by Combining Dynamic Models of Neural Networks","authors":"D. Tsamatsoulis","doi":"10.15255/cabeq.2021.1952","DOIUrl":"https://doi.org/10.15255/cabeq.2021.1952","url":null,"abstract":"This study aimed at developing models predicting cement strength based on shallow neural networks (ANN) using exclusively industrial data. The models used physical, chemical, and early strength results to forecast those for 28and 7-day. Neural networks were trained dynamically for a movable period and then used for a future period of at least one day. The study includes nine types of activation functions. The algorithms use the root mean square errors of testing sets (RMSEFuture) and their robustness as optimization criteria. The RMSEFuture of the best models with optimum ANNs was in the range of 1.36 MPa to 1.63 MPa, which is near or within the area of long-term repeatability of a very competent laboratory. Continuous application of the models in actual conditions of a cement plant in the long-term showed a performance at least equivalent to that calculated during the design step.","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":"611 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41282211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nacera Riad, N. Bouzidi, Mohamed Reda Zahi, O. Touafek, Y. Daghbouche, L. Piovetti, M. El Hattab
{"title":"Extraction of the Volatile Oils of Dictyopteris membranacea Batters 1902 by Focused Microwave-assisted Hydrodistillation and Supercritical Carbon Dioxide: Empirical Kinetic Modelling Approach, Apparent Solubility and Rate Constants","authors":"Nacera Riad, N. Bouzidi, Mohamed Reda Zahi, O. Touafek, Y. Daghbouche, L. Piovetti, M. El Hattab","doi":"10.15255/cabeq.2020.1885","DOIUrl":"https://doi.org/10.15255/cabeq.2020.1885","url":null,"abstract":"Supercritical carbon dioxide extraction (SCCO2) and focused microwave-assisted hydrodistillation (FMAHD) were used comparatively to isolate the volatile oils of the brown alga Dictyopteris membranacea from the crude ether extract. The volatiles fractions were analysed by GC/MS, the major compounds were: dictyopterene A, 6-butyl 1,4-cycloheptadiene, 1-undecen-3-one, 1,4-undecadien-3-one, (3-oxoundec-4-enyl) sulphur, tetradecanoic acid, hexadecanoic acid, 3-hexyl-4,5-dithiacycloheptanone, and albicanol. A kinetics study of the extraction of the volatile fractions obtained by the two processes was carried out, an external calibration allowed to quantify the content of the main metabolites. Empirical models were applied to adjust the experimental kinetics values but also to determine the values of apparent solubilities for SCCO2 and the rate constants for FMAHD. The results obtained revealed that the SCCO2 process was characterized by the coexistence of three distinct phases. For FMAHD, the extraction mechanism included two steps.","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42662993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anita E. Chand, P. Chand, Gopal Gautam Khatri, Dasu Ram Paudel
{"title":"Enhanced Removal Efficiency of Arsenic and Copper from Aqueous Solution Using Activated Acorus calamus Based Adsorbent","authors":"Anita E. Chand, P. Chand, Gopal Gautam Khatri, Dasu Ram Paudel","doi":"10.15255/cabeq.2021.1943","DOIUrl":"https://doi.org/10.15255/cabeq.2021.1943","url":null,"abstract":"Water security, due to heavy metal pollution in water resources, has become a serious problem in modern urbanized society. Plants with a good source of cellulose, hemicellulose, pectin, lignin, etc., are the most promising adsorbents for the removal of heavy metals from water. In this work, for the first time, a low-cost local plant named Acorus calamus (AC; flag root or sweet flag) and citric acid modified AC root powder (CAMAC) were used as potential adsorbents. The samples were characterized by SEM, FT-IR, XRD, and the sorption properties were investigated by different parameters, such as solution pH, batch kinetic study, batch isotherm, effect of adsorbent dose, effect of initial concentration, and effect of contact time. The results of ACRP on removal efficiency of copper (II) and arsenic (III) in an aqueous solution showed an excellent adsorption behavior (~ 80 % adsorption efficiency). This study opens up an easy and economical method for the decontamination of harsh polluting metal ions from water.","PeriodicalId":9765,"journal":{"name":"Chemical and Biochemical Engineering Quarterly","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45357557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}