Brazilian Journal of Chemical Engineering最新文献_第3页

HVO and biodiesel impact on diesel fuel stability: a multivariate data analysis approach HVO 和生物柴油对柴油稳定性的影响：多元数据分析方法

IF 1.5 4区工程技术

Brazilian Journal of Chemical Engineering Pub Date : 2024-07-16 DOI: 10.1007/s43153-024-00486-4

Vinícius Marcenes Gonçalves de Souza, Luiz Antonio d’Avila, Ivna Oliveira da Cruz

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Experimental measurement and thermodynamic modelling of the solubility of carbon dioxide in deep eutectic solvent 二氧化碳在深共晶溶剂中溶解度的实验测量和热力学建模

IF 1.5 4区工程技术

Brazilian Journal of Chemical Engineering Pub Date : 2024-07-16 DOI: 10.1007/s43153-024-00490-8

G. Murshid, Khashayar Nasrifar, J. Naser, F. Mjalli, K. Pishro

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A computational fluid dynamics study on the optimisation of a circular sedimentation tank using perforated inlet baffles 利用穿孔入口挡板优化圆形沉淀池的计算流体动力学研究

IF 1.5 4区工程技术

Brazilian Journal of Chemical Engineering Pub Date : 2024-07-15 DOI: 10.1007/s43153-024-00488-2

Kirpa Hirom, T. Devi

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Immobilization of β-glucosidase from Moniliophthora perniciosa on different supports by adsorption 用吸附法在不同的支持物上固定嗜血单胞菌中的β-葡萄糖苷酶

IF 1.2 4区工程技术

Brazilian Journal of Chemical Engineering Pub Date : 2024-07-11 DOI: 10.1007/s43153-024-00487-3

Larissa Emanuelle da Silva Almeida, Pedro Fernandes, Sandra Aparecida de Assis

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Mono-ethanolamine breakdown by UV/hydrogen peroxide via MEA photolysis: kinetics, energy rate/order and degradation efficiency for mono-ethanolamine wastewater treatment 紫外线/过氧化氢通过 MEA 光解分解单乙醇胺：用于单乙醇胺废水处理的动力学、能率/阶次和降解效率

IF 1.2 4区工程技术

Brazilian Journal of Chemical Engineering Pub Date : 2024-07-09 DOI: 10.1007/s43153-024-00479-3

Atif Khan, Saima Yasin, Hamayoun Mahmood, Tanveer Iqbal

{"title":"Mono-ethanolamine breakdown by UV/hydrogen peroxide via MEA photolysis: kinetics, energy rate/order and degradation efficiency for mono-ethanolamine wastewater treatment","authors":"Atif Khan, Saima Yasin, Hamayoun Mahmood, Tanveer Iqbal","doi":"10.1007/s43153-024-00479-3","DOIUrl":"https://doi.org/10.1007/s43153-024-00479-3","url":null,"abstract":"The ultraviolet light combined with hydrogen peroxide (UV/H2O2) was applied to break down mono-ethanolamine (MEA) in an aqueous solution. The coupled UV/H2O2 advanced oxidation process (AOP) was primarily responsible for the breakdown of MEA, with pseudo-first-order reaction kinetics. It was discovered that the reaction factors like MEA and H2O2 initial dosages affected reaction rates and MEA removal efficiency. The maximum removal efficiency was determined to be 77.35%. The hydroxyl ion (•OH) radical is primarily accountable for breaking down MEA in an aqueous environment. The energy consumed per reaction order calculations are performed by considering of the concentration factor of maximum degradation, in conjunction with the intensity of UV light. Overall, this work provides useful kinetic data that may be applied to the creation of an effective remediation strategy for MEA effluents.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":9194,"journal":{"name":"Brazilian Journal of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Cell rupture by high-speed homogenization and by cold plasma to produce microbial lipids 通过高速匀浆和冷等离子体使细胞破裂，从而产生微生物脂质

IF 1.2 4区工程技术

Brazilian Journal of Chemical Engineering Pub Date : 2024-07-08 DOI: 10.1007/s43153-024-00484-6

Thyago Thomé do Amaral Santiago, Juan Rodrigo Meireles de Oliveira, Luisa Sala, Janaína Fernandes de Medeiros Burkert

{"title":"Cell rupture by high-speed homogenization and by cold plasma to produce microbial lipids","authors":"Thyago Thomé do Amaral Santiago, Juan Rodrigo Meireles de Oliveira, Luisa Sala, Janaína Fernandes de Medeiros Burkert","doi":"10.1007/s43153-024-00484-6","DOIUrl":"https://doi.org/10.1007/s43153-024-00484-6","url":null,"abstract":"This study aimed to optimize two cell disruption methods, i.e., high-speed homogenization (Ultra-turrax) and cold plasma, to efficiently recover microbial lipids from Rhodotorula mucilaginosa CCT 7668. A previously optimized medium composed of agro-industrial byproducts (70 g/L sugarcane molasses and 3.4 g/L corn steep liquor) was used for producing lipids at 25 °C, 180 rpm for 144 h. Different pretreatments of biomass (wet, dry, and/or frozen) were evaluated; 7.0% of lipid content and 0.50 g/L total lipids resulted from the use of dry and frozen biomass. An experimental design methodology was applied to study the following variables: biomass:solvent ratio (0.3:100–1.2:100), operation time (0.6–7.4 min) and rotation speed (9280–22,720 rpm), when high-speed homogenization was used. Lipid contents ranged from 9.6 to 35.2% while total lipids ranged from 0.80 to 2.96 g/L. Regarding the cold plasma technology, biomass (0.5–0.7 g), operation time (20–40 min) and power (8–14 W) were evaluated. Lipid contents ranged from 20.6 to 34.9% while total lipids ranged from 1.81 to 3.06 g/L. Therefore, this study defined optimal conditions to efficiently produce microbial lipids with low toxicity, which represent potential sources that may be applied to food and pharmaceutical industries.","PeriodicalId":9194,"journal":{"name":"Brazilian Journal of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Enhancement in performance of the PVC/nanoclay mixed matrix nanofiltration membrane 提高聚氯乙烯/纳米粘土混合基质纳滤膜的性能

IF 1.2 4区工程技术

Brazilian Journal of Chemical Engineering Pub Date : 2024-07-08 DOI: 10.1007/s43153-024-00485-5

A. Ferdowsi, T. Kikhavani, S. N. Ashrafizadeh

{"title":"Enhancement in performance of the PVC/nanoclay mixed matrix nanofiltration membrane","authors":"A. Ferdowsi, T. Kikhavani, S. N. Ashrafizadeh","doi":"10.1007/s43153-024-00485-5","DOIUrl":"https://doi.org/10.1007/s43153-024-00485-5","url":null,"abstract":"Structural and functional properties of a membrane describe its quality necessary to achieve the defined performance. Preparation of mixed matrix membrane (MMM) was performed considering the non-solvent induced phase separation (NIPS) method, relied immersion precipitation technique using dimethylformamide (DMF) and tetrahydrofuran (THF) solvents. Nanoclay particles (NCPs) at a certain weight were dispersed within the PVC polymer. Four different membranes were structurally characterized using FTIR, XRD, and EDS methods. Further analyses were on surface morphology using FESEM, and AFM. Nanofiltration experiment was conducted and functionality of the novel membranes was evaluated in terms of flux of water permeation (FWP), hydrophilicity character (contact angle determination), and salt rejection (SR) behavior. With use of 2 wt% NCPs, porosity and hydrophilicity characteristics of the resultant membrane increased by 15%, and 17%, respectively. Crystallinity nature of the composite membrane did not change considerably (XRD results). Pure water flux (PWF) and calculated salt rejection were 118.35 kg m−2 h−1, and 95%, respectively.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":9194,"journal":{"name":"Brazilian Journal of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production of rutile nano-rods from Egyptian ilmenite mineral via a two-step physicochemical processes: a comparison study between low-grade and high-grade ilmenite concentrate 通过两步物理化学工艺从埃及钛铁矿中生产金红石纳米棒：低品位和高品位钛铁矿精矿对比研究

IF 1.2 4区工程技术

Brazilian Journal of Chemical Engineering Pub Date : 2024-07-06 DOI: 10.1007/s43153-024-00467-7

Ahmed Attia, Emad A. Elshehy, Hesham A. El Nahas, Hamed I. Mira, Mahmoud M. Hassaan

{"title":"Production of rutile nano-rods from Egyptian ilmenite mineral via a two-step physicochemical processes: a comparison study between low-grade and high-grade ilmenite concentrate","authors":"Ahmed Attia, Emad A. Elshehy, Hesham A. El Nahas, Hamed I. Mira, Mahmoud M. Hassaan","doi":"10.1007/s43153-024-00467-7","DOIUrl":"https://doi.org/10.1007/s43153-024-00467-7","url":null,"abstract":"The synthesis of pure titanium dioxide (TiO2) nanomaterials from naturally occurring ilmenite (FeTiO3), which is present in black sands, is highly desirable due to its numerous industrial and technological applications. In this study, nanostructured rutile nanorods were synthesized using Egyptian ilmenite concentrate through a simple mechanical/chemical route, comprising two stages: the first stage involved the reduction of ilmenite by activated carbon as a reducing agent during milling, while the second stage involved the decomposition of FeTiO3/carbon and the selective dissolution for iron and silica using a mixture of HCl/H2O2 and NH4F/HF, respectively. The results indicated that the optimal conditions for hydrothermal leaching of the milled ilmenite/carbon are achieved at a solid/liquid ratio of 167 g/L, 4 h at 170 °C. The amorphous titanium dioxide could be converted to ~ 95% pure rutile-phase nanorods by annealing at 700 °C followed by additional leaching processes to simply remove silica from the synthesized rutile.","PeriodicalId":9194,"journal":{"name":"Brazilian Journal of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of calcium and iron oxide/hydroxide bifunctional materials for treating phosphate and hardness in water 合成用于处理水中磷酸盐和硬度的钙铁氧化物/氢氧化物双功能材料

IF 1.2 4区工程技术

Brazilian Journal of Chemical Engineering Pub Date : 2024-07-02 DOI: 10.1007/s43153-024-00482-8

Le Ba Tran, Quynh Anh Nguyen Thi, Nhat Huy Nguyen, Tri Thich Le, Phuoc Toan Phan, Surapol Padungthon, Trung Thanh Nguyen

{"title":"Synthesis of calcium and iron oxide/hydroxide bifunctional materials for treating phosphate and hardness in water","authors":"Le Ba Tran, Quynh Anh Nguyen Thi, Nhat Huy Nguyen, Tri Thich Le, Phuoc Toan Phan, Surapol Padungthon, Trung Thanh Nguyen","doi":"10.1007/s43153-024-00482-8","DOIUrl":"https://doi.org/10.1007/s43153-024-00482-8","url":null,"abstract":"This article focuses on synthesizing dual-functional adsorption-ion exchange material (Fe-Ca/225H) by precipitation method on 225H cation exchange resin for the treatment of phosphate and hardness in water. Materials were analyzed through methods such as Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction studies (XRD), and scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). For the phosphate adsorption, suitable conditions were experimentally found to include reaction time (48 h), pH (6.5), adsorbent dosage (10 g/L), and HCO3− ions as the most impact ion on the phosphate adsorption. When calcium and magnesium were present in a solution containing phosphate, the phosphate adsorption capacity increased by 1.24 times. This was due to the combination of calcium and magnesium with phosphate on the surface of the material, which improves the adsorption efficiency. Besides, when compared with materials containing only iron (Fe/225H), the adsorption capacity of Ca-Fe/225H materials is still higher in both synthetic wastewater and domestic wastewater. The durability of the material after 10 regenerations was still over 80% effective. The material is effective in simultaneously treating both phosphate and hardness in the solution, with a much higher hardness treatment efficiency than amphoteric resin on the market (MB6SR).","PeriodicalId":9194,"journal":{"name":"Brazilian Journal of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biosynthesis of propionic acid from whey permeate and corn steep liquor by Propionibacterium freudenreichii subsp ATCC 6207 and partial purification using ion exchange cryogels 丙酸杆菌（Propionibacterium freudenreichii subsp ATCC 6207）从乳清渗透液和玉米浸出液中生物合成丙酸，并利用离子交换冷凝胶进行部分纯化

IF 1.2 4区工程技术

Brazilian Journal of Chemical Engineering Pub Date : 2024-07-01 DOI: 10.1007/s43153-024-00463-x

Luana Alves Tavares, Ana Cristina Freitas de Oliveira Meira, Fabrício Lelis da Silva, Lizzy Ayra Alcântara Veríssimo, Roberta Hilsdorf Piccoli, Luciano Vilela Paiva, Olga Lucía Mondragón-Bernal, José Guilherme Lembi Ferreira Alves

{"title":"Biosynthesis of propionic acid from whey permeate and corn steep liquor by Propionibacterium freudenreichii subsp ATCC 6207 and partial purification using ion exchange cryogels","authors":"Luana Alves Tavares, Ana Cristina Freitas de Oliveira Meira, Fabrício Lelis da Silva, Lizzy Ayra Alcântara Veríssimo, Roberta Hilsdorf Piccoli, Luciano Vilela Paiva, Olga Lucía Mondragón-Bernal, José Guilherme Lembi Ferreira Alves","doi":"10.1007/s43153-024-00463-x","DOIUrl":"https://doi.org/10.1007/s43153-024-00463-x","url":null,"abstract":"Propionic acid (PA) is industrially produced using raw materials derived from petroleum. In search of more sustainable processes, this work investigated the production of propionic acid (PA) by fermentation using whey permeate (WP) and corn steep water (CSL), with the strain Propionibacterium freudenreichii subsp ATCC 6207. Two strategies of fermentation were compared: one in batch and the other fed batch, carried out in a 5 L bioreactor at 30 °C, with pH control. Furthermore, in fed-batch fermentation, lactose concentration was controlled. The study revealed that batch fermentation was more efficient in producing propionic acid (PA). After 72 h, the concentration reached 13.10 g L−1, with a yield of 0.335 g g−1 and productivity of 0.182 g L−1 h−1. The research addressed the PA purification by ion exchange chromatography, using cryogels functionalized with taurine (Tau-cryogel). Tests at different pH (4 to 7) showed greater PA adsorption on the cryogel at pH 4 (256.13 mg g−1), with recovery of 59.7% and lower adsorption of acetic acid (29.34 mg g−1), indicating promising selectivity in purification. This study shows the feasibility of using byproducts such as WP and CSL in the production of PA and the potential of applying ion exchange cryogels in its purification.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":9194,"journal":{"name":"Brazilian Journal of Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141505979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0