Indian Chemical Engineer最新文献_第3页

Bioleaching of zinc from e-waste by A. aquatilis in fluidised bed bioreactor 流化床生物反应器中A.aquatilis从电子垃圾中生物浸出锌

IF 1.5

Indian Chemical Engineer Pub Date : 2023-04-06 DOI: 10.1080/00194506.2023.2196558

M. Minimol, K. Vidya Shetty, M. B. Saidutta

引用次数: 1

Modelling, extraction optimisation and phytochemical profile of essential oil from Moroccan endemic medicinal plant Ballota hirsuta 摩洛哥特有药用植物硬毛巴洛塔精油的建模、提取优化和植物化学特征

IF 1.5

Indian Chemical Engineer Pub Date : 2023-03-23 DOI: 10.1080/00194506.2023.2190753

Omar Ou-ani, L. Oucheikh, Axel Dabbous, M. Znini, J. Costa, L. Majidi

{"title":"Modelling, extraction optimisation and phytochemical profile of essential oil from Moroccan endemic medicinal plant Ballota hirsuta","authors":"Omar Ou-ani, L. Oucheikh, Axel Dabbous, M. Znini, J. Costa, L. Majidi","doi":"10.1080/00194506.2023.2190753","DOIUrl":"https://doi.org/10.1080/00194506.2023.2190753","url":null,"abstract":"ABSTRACT The present study describes for the first time the optimisation of the extraction by hydrodistillation and chemical composition of the essential oil (EO) of Ballota hirsuta aerial parts using Gas chromatography (GC/FID) and GC-mass spectrometry (GC/MS) analysis. Single-factor experiments and response surface methodology (RSM) based on a central composite design (CCD) were used to optimise the EO extraction parameters including drying period (0–21 days), extraction time (60–240 min) and water/plant ratio (5–20 ml/g). The optimum conditions for obtaining the best yield (0.91%) are a drying period of 7 days, an extraction time of 120 min and a water/plant ratio of 10 ml/g. The findings suggest that the experimental and the predicted data are in reasonable agreement, showing that the quadratic model was the fittest for the optimisation of the extraction process Under these optimum condition, GC/FID and GC/MS enabled the identification of forty-three volatile components representing 82.3% of the total of EO. Germacrene-D (16%), Z-Phytol (7.7%), α – Cadinol (7.3%) and Carvacrol (6.7%) were the main constituents of this EO. GRAPHICAL ABSTRACT","PeriodicalId":13430,"journal":{"name":"Indian Chemical Engineer","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42783289","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

Insights on the current status of effective strategies for waste management in COVID-19 pandemic: challenges and opportunities 对新冠肺炎大流行中废物管理有效战略现状的见解：挑战和机遇

IF 1.5

Indian Chemical Engineer Pub Date : 2023-03-23 DOI: 10.1080/00194506.2023.2190322

D. Barai, B. Bhanvase

{"title":"Insights on the current status of effective strategies for waste management in COVID-19 pandemic: challenges and opportunities","authors":"D. Barai, B. Bhanvase","doi":"10.1080/00194506.2023.2190322","DOIUrl":"https://doi.org/10.1080/00194506.2023.2190322","url":null,"abstract":"ABSTRACT A large number of people got infected and many lost their lives due to COVID-19. The increased volume and source-shuffling of the waste generated during the pandemic have challenged the current waste management facilities. The major sources of infectious waste not only include hospitals but also houses and quarantine facilities that lack in source-management thereby increasing the spread of the virus. This article focuses on waste collection and disposal techniques as major aspects of COVID-19 waste management. Also, it discusses the various waste disinfection technologies along with waste management strategies formulated by different organisations. The non-pharmaceutical intervention strategies have also been identified. Alongside this, various challenges and opportunities in COVID-19 waste management are reviewed. Accordingly, recommendations to achieve efficient waste management are stated. Waste management in case of such a pandemic requires proper segregation, storage, collection and treatment. Usage of multiple processes like pyrolysis, chemical treatment, microwave and radio wave is needed to be found for treatment of infectious waste. Increased amount of mixed waste creates the need to have method that is flexible enough. Large amount of PPE waste needs to be taken care of. Development of materials that can provide hygiene and have recyclability is essential. GRAPHICAL ABSTRACT","PeriodicalId":13430,"journal":{"name":"Indian Chemical Engineer","volume":"65 1","pages":"395 - 422"},"PeriodicalIF":1.5,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44025820","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

From the desk of guest editor 来自客座编辑的办公桌

IF 1.5

Indian Chemical Engineer Pub Date : 2023-03-04 DOI: 10.1080/00194506.2023.2207918

A. Ghosh

引用次数: 0

Studies in nanofiltration of dyes industry effluent 染料工业废水的纳滤研究

IF 1.5

Indian Chemical Engineer Pub Date : 2023-03-04 DOI: 10.1080/00194506.2023.2190321

Pritesh S. Patil, N. Thombre, Yagna Prasad K., A. Patwardhan

{"title":"Studies in nanofiltration of dyes industry effluent","authors":"Pritesh S. Patil, N. Thombre, Yagna Prasad K., A. Patwardhan","doi":"10.1080/00194506.2023.2190321","DOIUrl":"https://doi.org/10.1080/00194506.2023.2190321","url":null,"abstract":"ABSTRACT A large number of chemicals are being produced in the industries, which resulted in accumulation in the effluent stream. The impact of these effluents on the environment is very adverse, if it released directly without treatment. Nowadays, the treatment of the effluent before discharge is very important due to strict norms imposed by various government agencies. In our study, the effluent from a local effluent treatment plant (effluent from dyes factory) was procured and treated with hydrophilic polymeric and ceramic nanofiltration membranes. The membrane characterisation was done based on flux, permeability, flux recovery ratio, and flux decline ratio. The effluent received from ETP and treated effluent was characterised in terms of pH, total dissolved solids (TDS), Chemical Oxygen Demand (COD), Conductivity, Turbidity, and Osmolality. From our experimental study, more encouraging results were obtained. More than 50% COD reduction was observed in the process. The membrane flux was recovered by the physical (by using backwashing) and chemical process (by using sodium hypochlorite solution). The different range was used for optimising the appropriate process for recovery of membrane flux. About 95% membrane flux was recovered by physical process on both ceramic and polymeric membranes. GRAPHICAL ABSTRACT","PeriodicalId":13430,"journal":{"name":"Indian Chemical Engineer","volume":"65 1","pages":"155 - 167"},"PeriodicalIF":1.5,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49129928","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

Optimization of co-culture condition with respect to aeration and glucose to xylose ratio for bioethanol production 从曝气和葡萄糖与木糖的比例优化生物乙醇共培养条件

IF 1.5

Indian Chemical Engineer Pub Date : 2023-03-04 DOI: 10.1080/00194506.2023.2190332

Shashi Kumar, G. Agarwal, T. Sreekrishnan

{"title":"Optimization of co-culture condition with respect to aeration and glucose to xylose ratio for bioethanol production","authors":"Shashi Kumar, G. Agarwal, T. Sreekrishnan","doi":"10.1080/00194506.2023.2190332","DOIUrl":"https://doi.org/10.1080/00194506.2023.2190332","url":null,"abstract":"ABSTRACT The present study was designed to find a suitable microaerobic condition and ratio of glucose and xylose for maximum ethanol production using co-culture of Saccharomyces cerevisiae and Pichia stipitis. The maximum ethanol concentration and yield were achieved at 0.05 vvm aeration rate and 2:1 glucose/xylose ratio. The co-culture resulted in maximum ethanol concentration, ethanol yield, and volumetric productivity of 12.33 ± 0.10 g/L, 0.43 g/g, and 0.26 g/L/h, respectively. While, the monoculture of P. stipitis resulted in 8.96 ± 0.13 g/L, 0.36 g/g, and 0.19 g/L/h respectively. The fermentation carried out in microaerobic mode delivered 10.68% and 10.56% more ethanol concentration and ethanol yield respectively from glucose compared to the combination of anaerobic and microaerobic mode. Also, the glucose uptake rate increased to 0.83 g/L/h, which corresponds to an improvement of 50.16%, suggesting that the lower microaerophilic condition not only supports P. stipitis metabolism but also does S. cerevisiae to convert glucose faster in a co-culture system. Hence, co-culture cultivation in microaerobic mode would be a better condition to achieve maximum ethanol and productivity. GRAPHICAL ABSTRACT","PeriodicalId":13430,"journal":{"name":"Indian Chemical Engineer","volume":"65 1","pages":"233 - 248"},"PeriodicalIF":1.5,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47836676","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

Production and optimisation of biodegradable LDPE packaging films strengthened with inorganic filler through response surface methods using central composite design 采用中心复合材料设计的响应面法生产和优化无机填料增强的可生物降解LDPE包装膜

IF 1.5

Indian Chemical Engineer Pub Date : 2023-02-10 DOI: 10.1080/00194506.2022.2162447

D. Datta, D. Pamanji, Bimal Das

{"title":"Production and optimisation of biodegradable LDPE packaging films strengthened with inorganic filler through response surface methods using central composite design","authors":"D. Datta, D. Pamanji, Bimal Das","doi":"10.1080/00194506.2022.2162447","DOIUrl":"https://doi.org/10.1080/00194506.2022.2162447","url":null,"abstract":"ABSTRACT The current study emphasis on the optimisation of degradation of starch-blend LDPE films using nanosilica/modified nanosilica as a property-enhancing filler in order to establish an optimal composition used as a biodegradable packaging film. Weight loss and tensile and tear strength loss were used to determine the individual influence of the essential parameters defining degradability. The Central Composite Design (CCD) approach of Response Surface Methodology was used to optimise the process parameters. The obtained equation for film degradation is quadratic in nature and significant for the process, according to an ANOVA (analysis of variance) study. The addition of starch and modified nanosilica content in the matrix by 60% and above 0.6 g (1.5%) reduces the tensile and tear strength from 19.057 N/mm2 to 3.64 N/mm2 and 189.041 N/mm to 27.36 N/mm respectively, however increases the Young's modulus and stiffness to 582.76 MPa and 33654.62 N/m. The optimum composition of starch, LDPE and modified nanosilica was found to be 32, 8 and 0.6 g, respectively, showing an enhanced stiffness, tear strength and Young’s modulus of 29591.84 N/m, 155.5 N/mm and 464.25 N/mm2 along with induced biodegradability of 13.08% under garden soil and 12.07% under vegetable waste. GRAPHICAL ABSTRACT","PeriodicalId":13430,"journal":{"name":"Indian Chemical Engineer","volume":"65 1","pages":"196 - 212"},"PeriodicalIF":1.5,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47653944","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

Cultivation of Chlorella vulgaris in mediums with varying nitrogen sources and concentrations to induce the lipid yield 小球藻在不同氮源和浓度的培养基中培养以诱导脂质产量

IF 1.5

Indian Chemical Engineer Pub Date : 2023-02-03 DOI: 10.1080/00194506.2022.2164525

E. Restiawaty, Erly Marwani, S. Steven, Gabriela Mega Rahayu, Fadhilah Hanif, T. Prakoso

{"title":"Cultivation of Chlorella vulgaris in mediums with varying nitrogen sources and concentrations to induce the lipid yield","authors":"E. Restiawaty, Erly Marwani, S. Steven, Gabriela Mega Rahayu, Fadhilah Hanif, T. Prakoso","doi":"10.1080/00194506.2022.2164525","DOIUrl":"https://doi.org/10.1080/00194506.2022.2164525","url":null,"abstract":"ABSTRACT The development of biofuel production is of high concern since energy and fuels have so far been fulfilled by fossil resources. Microalgae, as green biomass, has the potential to produce biofuel. Nevertheless, many studies still face low lipid yield due to insufficient nutrients in the medium, improper culture techniques, or inaccurate solvent composition used in the lipid extraction process. Therefore, this study aimed to enhance lipid production from the cultivation of Chlorella vulgaris. The cultivation was performed in mediums supplemented with low concentrations of low-cost exogenous N-sources, which are still rare to examine. The concentrations were varied at 10, 20 and 30 mg L−1 of urea and 35, 70 and 105 mg L−1 of KNO3. For both urea and KNO3, a faster growth rate (0.215 vs. 0.211 d−1) was found under the highest N-concentration in the medium. In contrast, lipid yield increased in the medium with the lowest N-concentration, with values of up to 50.27–51.63%. The produced lipids also contain palmitic, oleic and linoleic acids, and their spectra comply with the fatty acids composition in the biodiesel standard. Moreover, this study achieves a high lipid yield and offers an inexpensive lipid induction technique for C. vulgaris. GRAPHICAL ABSTRACT","PeriodicalId":13430,"journal":{"name":"Indian Chemical Engineer","volume":"65 1","pages":"369 - 380"},"PeriodicalIF":1.5,"publicationDate":"2023-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43150283","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

The perspective of leadership and management commitment in process safety management 过程安全管理中的领导和管理承诺视角

IF 1.5

Indian Chemical Engineer Pub Date : 2023-02-01 DOI: 10.1080/00194506.2023.2165459

Aisah Timbang, D. M. R. Prasad, M. Azri

引用次数: 1

Techno-economic assessment of hydrogen production via dimethylether steam reforming and methanol steam reforming 二甲醚蒸汽重整和甲醇蒸汽重整制氢技术经济评价

IF 1.5

Indian Chemical Engineer Pub Date : 2023-01-13 DOI: 10.1080/00194506.2022.2162450

Shardul S. Rahatade, Nilesh A. Mali

{"title":"Techno-economic assessment of hydrogen production via dimethylether steam reforming and methanol steam reforming","authors":"Shardul S. Rahatade, Nilesh A. Mali","doi":"10.1080/00194506.2022.2162450","DOIUrl":"https://doi.org/10.1080/00194506.2022.2162450","url":null,"abstract":"ABSTRACT The present work reports the techno-economic analysis of hydrogen generation using Dimethyl Ether Steam Reforming (DMESR) and Methanol Steam Reforming (MSR) processes. For both processes, steady-state simulation models were developed using Aspen Plus. The two processes are analysed by taking into account the kinetics of the Cu/ZnO/Al2O3 catalyst for MSR and Cu–Ni/γ-Al2O3 catalyst for DMESR in an RPLUG model simulated as a Fixed Bed Reactor (FBR) at a temperature of 250°C and pressure 20 bar. The work dives into heat integration opportunities to reduce the operating cost of the two processes. The article also provides a gist of the approximate cost to produce hydrogen by the two processes by taking into consideration the cost of equipment and utilities involved. It is found that the TAC for DMESR is marginally higher than MSR mainly because of the higher cost of utilities involved. It was also found that NPV for MSR is comparatively higher than DMESR. The article also provides TAC for Selective Methanation of Carbon Monoxide (SMC) for both processes with the purpose of minimising CO. GRAPHICAL ABSTRACT","PeriodicalId":13430,"journal":{"name":"Indian Chemical Engineer","volume":"65 1","pages":"352 - 368"},"PeriodicalIF":1.5,"publicationDate":"2023-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45475549","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