Pub Date : 2020-05-07DOI: 10.1504/ijmsi.2020.107299
Tsuyoshi Yoda, Keita Shibuya, Kazuma Miura, H. Myoubudani
Activated carbon fibre (ACF), a novel material, has attracted considerable research attention. The pore structures found on the surfaces of ACFs are strongly related to their functionality. Herein, ACF was prepared via a two-step thermal treatment of cotton. The diameters and width distributions of thus-prepared ACFs were characterised using scanning electron microscopy (SEM). SEM analysis also revealed that the pore structures on the surfaces of the cotton-derived ACFs were activated by carbon dioxide. Successful adsorption functionality of these ACFs was characterised using a methylene blue (MB) solution. The effects of the two-step thermal treatment and potential applications of this methodology are also discussed. The proposed method can be used on other fibre products or industrial waste materials generated during the manufacture of cloth and fibres, and the generated ACFs can be used for energy-storage applications.
{"title":"Effects of two-step heat treatment on the structure of cotton-derived activated carbon fibres","authors":"Tsuyoshi Yoda, Keita Shibuya, Kazuma Miura, H. Myoubudani","doi":"10.1504/ijmsi.2020.107299","DOIUrl":"https://doi.org/10.1504/ijmsi.2020.107299","url":null,"abstract":"Activated carbon fibre (ACF), a novel material, has attracted considerable research attention. The pore structures found on the surfaces of ACFs are strongly related to their functionality. Herein, ACF was prepared via a two-step thermal treatment of cotton. The diameters and width distributions of thus-prepared ACFs were characterised using scanning electron microscopy (SEM). SEM analysis also revealed that the pore structures on the surfaces of the cotton-derived ACFs were activated by carbon dioxide. Successful adsorption functionality of these ACFs was characterised using a methylene blue (MB) solution. The effects of the two-step thermal treatment and potential applications of this methodology are also discussed. The proposed method can be used on other fibre products or industrial waste materials generated during the manufacture of cloth and fibres, and the generated ACFs can be used for energy-storage applications.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/ijmsi.2020.107299","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44643731","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}
Pub Date : 2020-05-07DOI: 10.1504/ijmsi.2020.107297
R. Santhanam, S. Sivakumar, Y. Krishna
Helical coil tension springs made of shape memory alloy (SMA) materials generally undergo large deflection under loading during which their mean coil diameter changes noticeably. In the design of these helical coil springs, it is necessary to identify the real behaviour which may be affected by the variation in actual coil diameter. Therefore, a simple formulation is proposed in this paper for predicting instantaneous coil diameter. The predictions from present formulation match very closely with experimental measurements. The proposed formulation is relatively easy to adopt for design calculations. The effects of varying coil diameter on the spring characteristics are also discussed. This is very general and can be used for any helical spring which undergoes small or large deflections, although the proposed formulation is derived for SMA helical spring.
{"title":"A new simple formulation for instantaneous coil diameter of a SMA helical spring","authors":"R. Santhanam, S. Sivakumar, Y. Krishna","doi":"10.1504/ijmsi.2020.107297","DOIUrl":"https://doi.org/10.1504/ijmsi.2020.107297","url":null,"abstract":"Helical coil tension springs made of shape memory alloy (SMA) materials generally undergo large deflection under loading during which their mean coil diameter changes noticeably. In the design of these helical coil springs, it is necessary to identify the real behaviour which may be affected by the variation in actual coil diameter. Therefore, a simple formulation is proposed in this paper for predicting instantaneous coil diameter. The predictions from present formulation match very closely with experimental measurements. The proposed formulation is relatively easy to adopt for design calculations. The effects of varying coil diameter on the spring characteristics are also discussed. This is very general and can be used for any helical spring which undergoes small or large deflections, although the proposed formulation is derived for SMA helical spring.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/ijmsi.2020.107297","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42846062","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}
Pub Date : 2020-05-07DOI: 10.1504/ijmsi.2020.107303
J. Saini, D. K. Soni, A. K. Mandal
The main objective of this research work is the improvement of pavements' load-bearing capacity that are constructed on Kurukshetra alkaline soils by tile dust. Soil samples from Pehowa-Kurukshetra road are collected and put under testing for enhancing their properties by tile dust at different dosages ranging from 2-12%. Finally, the test result has reviewed that the maximum dry density gets minimised and the optimum moisture content gets increased with the supplement of admixture. Tests including California bearing ratio test (CBR) and unconfined compression tests (UCS) are done for evaluating the strength properties of alkaline soil. Chemical test due to the reaction in the submerged condition is performed in CSSRI lab in Karnal Haryana. At last, the test results specify that the tile dust significantly enhances the performance of soil. Thereby, the improved soil is utilised as a good sub-base in flexible pavements in construction work.
{"title":"Changing the physical, chemical properties of alkaline soil stabilised with industrial waste material tile dust","authors":"J. Saini, D. K. Soni, A. K. Mandal","doi":"10.1504/ijmsi.2020.107303","DOIUrl":"https://doi.org/10.1504/ijmsi.2020.107303","url":null,"abstract":"The main objective of this research work is the improvement of pavements' load-bearing capacity that are constructed on Kurukshetra alkaline soils by tile dust. Soil samples from Pehowa-Kurukshetra road are collected and put under testing for enhancing their properties by tile dust at different dosages ranging from 2-12%. Finally, the test result has reviewed that the maximum dry density gets minimised and the optimum moisture content gets increased with the supplement of admixture. Tests including California bearing ratio test (CBR) and unconfined compression tests (UCS) are done for evaluating the strength properties of alkaline soil. Chemical test due to the reaction in the submerged condition is performed in CSSRI lab in Karnal Haryana. At last, the test results specify that the tile dust significantly enhances the performance of soil. Thereby, the improved soil is utilised as a good sub-base in flexible pavements in construction work.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/ijmsi.2020.107303","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45394757","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}
Pub Date : 2020-05-07DOI: 10.1504/ijmsi.2020.10029327
R. Bedi, S. Singh
Results of an investigation on the flexural fatigue performance of poly-propylene fibre reinforced polymer concrete composites (PFRPCC) are presented. Flexural fatigue lives of PFRPCC beams at different stress levels were obtained using 100 kN MTS servo-controlled actuator. The specimens incorporated three weight fractions, i.e., 0.5%, 1.0% and 2.0% of polypropylene fibres. It has been established using graphical goodness of fit procedure that the fatigue life distributions of PFRPCC at various stress levels approximately follow the two parameter Weibull distribution with correlation coefficient exceeding 0.9. The results of graphical goodness of fit procedure have been reinforced with the help of Kolmogorov-Smirnov goodness of fit test and Anderson-Darling test of goodness of fit. The fatigue strength prediction models, particularly representing S-N relationships, have been examined and the material coefficients have been obtained for PFRPCC containing different weight fractions of fibres. Furthermore, using Weibull distribution, probability of failure has been incorporated into the fatigue life data of PFRPCC to develop S-N-Pf relationships, both graphically and analytically. The two million cycle endurance limits for PFRPCC containing different amounts of fibres have also been obtained.
{"title":"Flexural fatigue analysis of fibre reinforced polymer concrete composites under non-reversed loading","authors":"R. Bedi, S. Singh","doi":"10.1504/ijmsi.2020.10029327","DOIUrl":"https://doi.org/10.1504/ijmsi.2020.10029327","url":null,"abstract":"Results of an investigation on the flexural fatigue performance of poly-propylene fibre reinforced polymer concrete composites (PFRPCC) are presented. Flexural fatigue lives of PFRPCC beams at different stress levels were obtained using 100 kN MTS servo-controlled actuator. The specimens incorporated three weight fractions, i.e., 0.5%, 1.0% and 2.0% of polypropylene fibres. It has been established using graphical goodness of fit procedure that the fatigue life distributions of PFRPCC at various stress levels approximately follow the two parameter Weibull distribution with correlation coefficient exceeding 0.9. The results of graphical goodness of fit procedure have been reinforced with the help of Kolmogorov-Smirnov goodness of fit test and Anderson-Darling test of goodness of fit. The fatigue strength prediction models, particularly representing S-N relationships, have been examined and the material coefficients have been obtained for PFRPCC containing different weight fractions of fibres. Furthermore, using Weibull distribution, probability of failure has been incorporated into the fatigue life data of PFRPCC to develop S-N-Pf relationships, both graphically and analytically. The two million cycle endurance limits for PFRPCC containing different amounts of fibres have also been obtained.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42505736","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}
Pub Date : 2020-05-07DOI: 10.1504/ijmsi.2020.107301
H. Mahzuz, M. Hasan
The aim of the study is to observe the strength increment of concrete by using fly ash as a partial replacement of fine aggregate. For that, three mix ratios – 1:1.25:2.5, 1:1.5:3 and 1:2:3 (weight-based) have been considered. For each ratio, fly ash was used as 0%, 10%, 20% and 30% of the fine aggregate. The curing period and the water-cement ratio (W/C) were 28 days and 0.5, respectively. It was revealed that the compressive strength of the concrete was increased with the addition of fly ash. And it was the maximum at 10% of fly ash content. A nonlinear relationship has been proposed where compressive strength has been used as the function of the weight of cement, fine aggregate, coarse aggregate and fly ash.
{"title":"Compressive strength enhancement of concrete using fly ash as a partial replacement of fine aggregate and model development","authors":"H. Mahzuz, M. Hasan","doi":"10.1504/ijmsi.2020.107301","DOIUrl":"https://doi.org/10.1504/ijmsi.2020.107301","url":null,"abstract":"The aim of the study is to observe the strength increment of concrete by using fly ash as a partial replacement of fine aggregate. For that, three mix ratios – 1:1.25:2.5, 1:1.5:3 and 1:2:3 (weight-based) have been considered. For each ratio, fly ash was used as 0%, 10%, 20% and 30% of the fine aggregate. The curing period and the water-cement ratio (W/C) were 28 days and 0.5, respectively. It was revealed that the compressive strength of the concrete was increased with the addition of fly ash. And it was the maximum at 10% of fly ash content. A nonlinear relationship has been proposed where compressive strength has been used as the function of the weight of cement, fine aggregate, coarse aggregate and fly ash.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/ijmsi.2020.107301","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41498831","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}
Pub Date : 2020-05-07DOI: 10.1504/ijmsi.2020.107302
N. Makhutov, M. Gadenin, A. Cherniavsky, O. Cherniavsky, V. Nadein
Formulation and solution of a task for the composite engineering-geological interaction of a pipeline and a soil are considered. Finite element method is used for numerical analysis of the task, accounting for large displacements and corresponding strains under changing boundary conditions. The capability of the limit state reaching in the pipeline with loss of form stability is shown depending on pad layer and the pipe properties. It is demonstrated also that safety maintenance could be provided by usage of ribs, formed on a pipe by a cyclic thermomechanical actions.
{"title":"Mechanics of contact interaction and deformation of main pipelines in the conditions of extreme external actions","authors":"N. Makhutov, M. Gadenin, A. Cherniavsky, O. Cherniavsky, V. Nadein","doi":"10.1504/ijmsi.2020.107302","DOIUrl":"https://doi.org/10.1504/ijmsi.2020.107302","url":null,"abstract":"Formulation and solution of a task for the composite engineering-geological interaction of a pipeline and a soil are considered. Finite element method is used for numerical analysis of the task, accounting for large displacements and corresponding strains under changing boundary conditions. The capability of the limit state reaching in the pipeline with loss of form stability is shown depending on pad layer and the pipe properties. It is demonstrated also that safety maintenance could be provided by usage of ribs, formed on a pipe by a cyclic thermomechanical actions.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/ijmsi.2020.107302","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45005885","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}
Pub Date : 2019-10-21DOI: 10.1504/ijmsi.2019.10024786
P. Jay, Thakkar Sonal, Dave Urmil
Sustainability and durability of concrete structures is an issue in today's world. This paper presents comparative study of effect of high temperature on fly ash-based alkali activated concrete, activated with sodium-based activators and ordinary Portland cement concrete for same grade. Residual compressive strength, split tensile strength, flexural strength, bond strength and modulus of elasticity were evaluated for both concretes at temperatures of 27°C, 500°C, 700°C and 900°C. It was found that alkali activated concrete with fly ash had 16% reduction in compressive strength as compared to 40% reduction in ordinary cement concrete. Similarly reduction in other mechanical properties like split tensile strength, flexural strength, bond strength and modulus of elasticity for fly ash-based alkali activated concrete was less compared to ordinary Portland cement concrete. This indicates that alkali activated concrete can be a viable alternative to ordinary Portland cement concrete during its exposure to high temperature. The highlights of the paper are: 1) mechanical properties of fly ash-based alkali activated concrete at elevated temperatures were evaluated; 2) effect of high temperature on fly ash-based alkali activated concrete and OPC concrete was compared and fly ash-based alkali activated concrete was found to be superior to ordinary cement concrete in all mechanical properties.
{"title":"Effect of high temperature on fly ash-based alkali activated concrete compared to Portland cement concrete","authors":"P. Jay, Thakkar Sonal, Dave Urmil","doi":"10.1504/ijmsi.2019.10024786","DOIUrl":"https://doi.org/10.1504/ijmsi.2019.10024786","url":null,"abstract":"Sustainability and durability of concrete structures is an issue in today's world. This paper presents comparative study of effect of high temperature on fly ash-based alkali activated concrete, activated with sodium-based activators and ordinary Portland cement concrete for same grade. Residual compressive strength, split tensile strength, flexural strength, bond strength and modulus of elasticity were evaluated for both concretes at temperatures of 27°C, 500°C, 700°C and 900°C. It was found that alkali activated concrete with fly ash had 16% reduction in compressive strength as compared to 40% reduction in ordinary cement concrete. Similarly reduction in other mechanical properties like split tensile strength, flexural strength, bond strength and modulus of elasticity for fly ash-based alkali activated concrete was less compared to ordinary Portland cement concrete. This indicates that alkali activated concrete can be a viable alternative to ordinary Portland cement concrete during its exposure to high temperature. The highlights of the paper are: 1) mechanical properties of fly ash-based alkali activated concrete at elevated temperatures were evaluated; 2) effect of high temperature on fly ash-based alkali activated concrete and OPC concrete was compared and fly ash-based alkali activated concrete was found to be superior to ordinary cement concrete in all mechanical properties.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49265421","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}
Pub Date : 2019-10-21DOI: 10.1504/ijmsi.2019.10024784
M. S. Rahmat, K. Hudha, Z. A. Kadir, N. H. Amer, N. Nuri, S. Abdullah
This paper presents the modelling and characterisation of a magneto-rheological elastomer isolator device (MREID) under impact loading using the adaptive neuro-fuzzy inference system (ANFIS) technique. The characterisation of an MREID under impact loading was performed using an impact pendulum test rig, and the data obtained from the experimental work was processed in form of force-velocity and force-displacement characteristics. In order to predict MREID behaviour in simulation analysis, multiple ANFIS models were proposed. A single ANFIS model represented a single kinetic energy produced by the impact mass used in experimental work. The experimental data was then used to train the ANFIS in predicting MREID behaviour and validating its performance. For verification, the prediction model, a parametric model (namely, the modified Bouc-Wen model) was developed, and the models were compared. The proposed interpolated multiple ANFIS model predicted the behaviour of the MREID with a high level of accuracy. The proposed model produced a better prediction than the modified Bouc-Wen model.
{"title":"Modelling and characterisation of a magneto-rheological elastomer isolator device under impact loadings using interpolated multiple adaptive neuro fuzzy inference system structure","authors":"M. S. Rahmat, K. Hudha, Z. A. Kadir, N. H. Amer, N. Nuri, S. Abdullah","doi":"10.1504/ijmsi.2019.10024784","DOIUrl":"https://doi.org/10.1504/ijmsi.2019.10024784","url":null,"abstract":"This paper presents the modelling and characterisation of a magneto-rheological elastomer isolator device (MREID) under impact loading using the adaptive neuro-fuzzy inference system (ANFIS) technique. The characterisation of an MREID under impact loading was performed using an impact pendulum test rig, and the data obtained from the experimental work was processed in form of force-velocity and force-displacement characteristics. In order to predict MREID behaviour in simulation analysis, multiple ANFIS models were proposed. A single ANFIS model represented a single kinetic energy produced by the impact mass used in experimental work. The experimental data was then used to train the ANFIS in predicting MREID behaviour and validating its performance. For verification, the prediction model, a parametric model (namely, the modified Bouc-Wen model) was developed, and the models were compared. The proposed interpolated multiple ANFIS model predicted the behaviour of the MREID with a high level of accuracy. The proposed model produced a better prediction than the modified Bouc-Wen model.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43754823","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}
Pub Date : 2019-10-21DOI: 10.1504/ijmsi.2019.103209
Pragati Singh, J. S. Dureja, Harwinder Singh, M. Bhatti
Inconel 625, having wide industrial applications, exhibits poor machinability because of rapid work hardening and poor thermal conductivity. Therefore, cutting fluids are utilised to remove heat and provide lubrication in the cutting zone, but their application poses serious environmental and health hazards, calling to minimise their use. Multi-walled carbon nanotube (NMQL) technique provides an effective alternative to flooded cooling-machining of Inconel and stainless steel. Current study evaluates performance of NMQL in terms of tool wear and surface finish during face milling of Inconel 625. To enhance thermal conductivity of MQL, soluble multiwalled carbon nanotubes (1% wt.) were mixed in vegetable oil. Cutting parameters were optimised to minimise tool wear and surface roughness and validation tests were also conducted under flooded and dry conditions to compare their performance with NMQL machining. Performance of cutting tool during NMQL machining was found to be 15.56% and 3.45% better than dry and flooded machining respectively, on the basis of tool wear (VB), and was 14.06% and 59.02% improved over flooded and dry machining respectively, in terms of surface roughness (Ra).
{"title":"Environment friendly milling of Inconel-625","authors":"Pragati Singh, J. S. Dureja, Harwinder Singh, M. Bhatti","doi":"10.1504/ijmsi.2019.103209","DOIUrl":"https://doi.org/10.1504/ijmsi.2019.103209","url":null,"abstract":"Inconel 625, having wide industrial applications, exhibits poor machinability because of rapid work hardening and poor thermal conductivity. Therefore, cutting fluids are utilised to remove heat and provide lubrication in the cutting zone, but their application poses serious environmental and health hazards, calling to minimise their use. Multi-walled carbon nanotube (NMQL) technique provides an effective alternative to flooded cooling-machining of Inconel and stainless steel. Current study evaluates performance of NMQL in terms of tool wear and surface finish during face milling of Inconel 625. To enhance thermal conductivity of MQL, soluble multiwalled carbon nanotubes (1% wt.) were mixed in vegetable oil. Cutting parameters were optimised to minimise tool wear and surface roughness and validation tests were also conducted under flooded and dry conditions to compare their performance with NMQL machining. Performance of cutting tool during NMQL machining was found to be 15.56% and 3.45% better than dry and flooded machining respectively, on the basis of tool wear (VB), and was 14.06% and 59.02% improved over flooded and dry machining respectively, in terms of surface roughness (Ra).","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/ijmsi.2019.103209","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44742943","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}
Pub Date : 2019-10-21DOI: 10.1504/ijmsi.2019.10024785
X. Dai, Jiyuan Zhu
The chemical composition, thermal stability and crystallinity of NaOH/KH550 modified bagasse were studied using the infrared spectroscopic analysis, thermogravimetric analysis and X-ray diffractometry. After modification, the hemicellulose was removed and KH550 was grafted on the surface of the bagasse fibre effectively. Then, the modified bagasse was used as the adsorbent of methylene blue (MB) for the adsorption study. According to the results, the initial concentration of MB ranged from 10 to 200 mg/L at room temperature (25°C). And the removal rate of MB could reach 94% under the conditions of adsorbent dosage greater than or equal to 4 g/L, solution pH from 8 to 12 and an adsorption time longer than 60 minutes. Furthermore, the adsorption isotherm model and adsorption kinetic model of modified bagasse for MB were studied and the results showed that the adsorption isotherm accorded with Freundlich model and the adsorption kinetic model accorded with pseudo second-order kinetic equation.
{"title":"Study on the adsorption of methylene blue by NaOH KH550 modified bagasse","authors":"X. Dai, Jiyuan Zhu","doi":"10.1504/ijmsi.2019.10024785","DOIUrl":"https://doi.org/10.1504/ijmsi.2019.10024785","url":null,"abstract":"The chemical composition, thermal stability and crystallinity of NaOH/KH550 modified bagasse were studied using the infrared spectroscopic analysis, thermogravimetric analysis and X-ray diffractometry. After modification, the hemicellulose was removed and KH550 was grafted on the surface of the bagasse fibre effectively. Then, the modified bagasse was used as the adsorbent of methylene blue (MB) for the adsorption study. According to the results, the initial concentration of MB ranged from 10 to 200 mg/L at room temperature (25°C). And the removal rate of MB could reach 94% under the conditions of adsorbent dosage greater than or equal to 4 g/L, solution pH from 8 to 12 and an adsorption time longer than 60 minutes. Furthermore, the adsorption isotherm model and adsorption kinetic model of modified bagasse for MB were studied and the results showed that the adsorption isotherm accorded with Freundlich model and the adsorption kinetic model accorded with pseudo second-order kinetic equation.","PeriodicalId":39035,"journal":{"name":"International Journal of Materials and Structural Integrity","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46703477","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}
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