The widespread use of carbendazim insecticides has caused substantial concerns to human health du... more The widespread use of carbendazim insecticides has caused substantial concerns to human health due to their coexistence, high toxicity, and persistence. Therefore, it is crucial to develop a carbendazim detection more important for the protection of both humans and the environment safety. A graphitic carbon nitride/europium molybdate (g-C3N4/EuMoO4) composite was fabricated using a simple coprecipitation method and utilized for the selective detection of carbendazim. The glassy carbon electrode (GCE) was fabricated with g-C3N4/EuMoO4 composite electrode (GCE/g-C3N4/EuMoO4) was simple, affordable, and offers an excellent platform for the detection of carbendazim. The structure formation was validated by suitable microscopic and spectroscopic techniques. Under optimal conditions, the GCE/g-C3N4/EuMoO4 electrode showed excellent electrochemical properties for the detection of carbendazim with a low detection limit (0.04 μM) (S/N = 3), a large linear response range of 50–400 μM, and hig...
This paper gives a review of the vibration characteristics and its analysis associated with two s... more This paper gives a review of the vibration characteristics and its analysis associated with two stroke low speed marine diesel engines and its counteract measures.Marine diesel engines are variable speed engines and face resonance vibration in a narrow band speed within its speed range and this band is called as barred speed range. The historical strategy for vibration control has been sub-critical design criteria. This strategy adopts vibration analysis of local primary forces of machinery components and thereby neglects the impact of secondary forces. Recently, Global vibration analysis has been adopted to reduce the influence of barred speed rangeand secondary excitations. In this paper, we study the performance comparison of both sub-critical design criteria and global vibration analysis.
In this work, the hydrogenation of the anisole and acetophenone reaction over β-zeolite (BEA) is ... more In this work, the hydrogenation of the anisole and acetophenone reaction over β-zeolite (BEA) is reported. The parent zeolite obtained from a commercial source was modified by various treatments, such as dealumination, desilication, and ion exchange, to increase its activity in the acylation reaction. In the present study, the SiO 2 /Al 2 O 3 ratio (SAR = 25) of the parent BEA was altered by dealumination with HNO 3 (to SAR, 58, 88, and 170) and by desilication with tetrapropylammonium hydroxide. X-ray diffraction results showed that the BEA structure was maintained after various treatments. All of the catalysts were tested in the hydrogenation of the anisole and acetophenone reaction. When the reaction was carried out using 0.5 wt % Pd/BEA(58) at 155°C and 25 bar H 2 pressure, acylation products were obtained. These studies point out that it is not possible to carry out both acylation of anisole and hydrogenation of ketone in a single pot and ketone needs to be separated from anisole prior to its hydrogenation. Summing up, the studies reveal that BEA modified by mild dealumination/desilication is suitable for the acylation of anisole with long-chain acids. Also, acylation over BEA produces mainly the p-acylated product (ketone), which is often the desired product. Pd/BEA is a good catalyst for the hydrogenation of ketone to alcohol (another desired product) or the alkyl aromatic hydrocarbon.
Among the many industrially important zeolites, mordenite is found to be interesting because of i... more Among the many industrially important zeolites, mordenite is found to be interesting because of its unique and exceptional physical and chemical properties.
This research demonstrates a process here to convert polypropylene pyrolysis oil (PPO) 34 to dies... more This research demonstrates a process here to convert polypropylene pyrolysis oil (PPO) 34 to diesel. The hydroprocessing of PPO (HPPO-B) utilizing Ni-Mo/Lap bimetal catalyst has 35 been attempted in this study. Hydroprocessing of plastic pyrolysis oil had been attempted earlier, but the hydroprocessing of PPO utilizing a bimetal catalyst and the corresponding 37 validation suites consisting of physicochemical properties, composition comparison with diesel 38 and diesel engine trials have not yet been reported. The physicochemical properties of the 39 produced HPPO-B matched EN590 standard (European diesel standards) requirements. The 40 hydroprocess conditions (70 bar and 350 °C) and the synthesized Ni-Mo/modified Lap catalyst 41 has been responsible for producing n-alkanes, iso-alkanes and aromatics in proportions which 42 gave a 95% match with diesel. Diesel engine combustion and emissions of HPPO-B matched 43 diesel. HPPO-B provides the opportunity to utilize plastic solid waste (PSW) as a transport 44 fuel. The results of HPPO-B inspire and encourages to pursue the hydroprocess path for 45 protecting the environment from hazardous plastic solid waste (PSW).
Exploring the catalytic efficiency of ionic liquid supported on mesoporous material as heterogene... more Exploring the catalytic efficiency of ionic liquid supported on mesoporous material as heterogeneous organ catalysts for example, 1-Ethyl-3-methylimidazolium Triflate and 1-Ethyl-3-methylimidazolium chloride + AlCl 3 (different ratio) immobilized on SBA-15 which contains 0.5% of platinum with regards to isomerization of n-pentane and n-hexane along with commercial light naphtha feed conversion reactions. The prepared materials were characterized by a number of instrumental methods, which include temperature-programmed desorption to evaluate acid strength. The reactions were performed in a fixed-bed stainless steel reactor having high-pressure by the down-flow method. This valuable novel isomerization reaction was strongly influenced by a number of key parameters, for instance, temperature, pressure, weight hourly space velocity, and flow rate of H 2, which are discussed in detail. The Pt/EMIM-AlCl 4 (1:1)20/SBA-15 ionic liquid catalyst showed superior catalytic performance out of the four catalytic system examined towards the above reactions which is undoubtedly because of its significant turnover frequencies (TOF) values of 8.6 s-1 and 8.5 s-1 and specific reaction rates (SRR) values of 8.01 x 10-4 mol g-1 s-1 and 8.00 x 10-4 mol g-1 s-1 for n-pentane and n-hexane correspondingly. The order of catalytic activity is: Pt/EMIM-AlCl 4 (1:1)20/SBA-15 > Pt-EMIM-Tf/SBA-15 > Pt/EMIM-Al 2 Cl 7 (1:2)20/SBA-15 > Pt-EMIM-Al 2 Cl 7 (1:2)30/SBA-15.
International Journal of Vehicle Structures and Systems, 2017
Man Diesel and Turbo G-Type ultra long stroke marine diesel engine was introduced in October 2010... more Man Diesel and Turbo G-Type ultra long stroke marine diesel engine was introduced in October 2010.This ultra long stroke means it has been designed to have reduced engine speeds and there by achieving high efficiency ships with reduced fuel consumption as well as reduced CO2 emissions. The ultra long stroke diesel engine with capability of using large size propeller and there by engines with comparatively low speeds can be used for propulsions of large bulk carriers and oil tankers. This arrangement facilitates the effective implementation of EEDI. In this paper we review the effectiveness of this engine in implementation and achievement of EEDI and thereby achieving reduced CO2 emissions. In this paper, we also study the selection of propeller sizes to achieve the optimum design ship speeds and thereby comply with EEDI requirements.
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
Mercury (Hg 2þ) is considered as a dangerous toxic element that easily affects human and environm... more Mercury (Hg 2þ) is considered as a dangerous toxic element that easily affects human and environmental ecosystem. For this reason, need to develop sensitive and selective detection of Hg 2þ is more consideration. Platinum (Pt) incorporated dealuminated (D) mordenite decorated modified glassy carbon electrode (GCE) used for the electrochemical detection of Hg 2þ. Because, the Pt/D-mordenite modified electrode have mesostructured properties, active surface area, high electron transfers properties and sensitivity. The prepared electrode was characterized by different microscopic and spectroscopic technique. An electrochemical behavior of the electrode was identified by differential pulse voltammetry (DPV) and cyclic voltammetry (CV) technique. The GCE/Pt/Dmordenite electrode exhibit the higher peak current response towards the detection of Hg 2þ metal ions than that of the other modified electrodes. Because, mordenite could provide higher active surface and Pt attributed to the higher electrocatalytic activity. The GCE/Pt/D-mordenite electrode exhibited an excellent detection limit (3.4 nM), higher sensitivity (11.2598 μA μM À 1 cm À 2), long linear range (0.1-220 μM), excellent selectivity, repeatability and reproducibility towards the detection of Hg 2þ ions. The optimization parameters such as effect of the accumulating time, pH, and scanning potential towards the detection of Hg 2þ ions were examined. Further, the interference studies show that interfering common metal ions had no influence on the Hg 2þ ions response. Thus, the GCE/Pt/D-mordenite electrode as a suitable electrochemical sensor for the detection of Hg 2þ metal ions in the waste water. The obtained Hg 2þ ions detection level (LOD) was below the U.S. Environmental Protection Agency (EPA) and the World's Health Organization (WHO) guideline level.
Synthesis of NieMg modified mesoporous silica and alumina catalysts. Investigation of catalytic a... more Synthesis of NieMg modified mesoporous silica and alumina catalysts. Investigation of catalytic activity towards hydrodeoxygenation of eugenol under different reaction condition. Mg is high basicity to facilitating transport of eugenol in turn to the interface of Ni catalysts. Ni/Mg-SA (10) catalysts high oxygen removal efficiency of 75% was achieved. The experimental investigation of
Catalytic activity of ratio-dependent SBA-15 supported zirconia catalysts for highly selective ox... more Catalytic activity of ratio-dependent SBA-15 supported zirconia catalysts for highly selective oxidation of benzyl alcohol to benzaldehyde and environmental pollutant heavy metal ions detection,
IOP Conference Series: Materials Science and Engineering, 2017
The purpose ofthis study is to review the existing literature about chemical recycling of plastic... more The purpose ofthis study is to review the existing literature about chemical recycling of plastic waste and its potential as fuel for diesel engines.This is a review covering on the field of converting waste plastics into liquid hydrocarbon fuels for diesel engines. Disposal and recycling of waste plastics have become an incremental problem and environmental threat with increasing demand for plastics. One of the effective measures is by converting waste plastic into combustible hydrocarbon liquid as an alternative fuel for running diesel engines. Continued research efforts have been taken by researchers to convert waste plastic in to combustible pyrolysis oil as alternate fuel for diesel engines.An existing literature focuses on the study of chemical structure of the waste plastic pyrolysis compared with diesel oil. Converting waste plastics into fuel oil by different catalysts in catalytic pyrolysis process also reviewed in this paper. The methodology with subsequent hydro treating and hydrocracking of waste plastic pyrolysis oil can reduce unsaturated hydrocarbon bonds which would improve the combustion performance in diesel engines as an alternate fuel.
International Journal of Engineering & Technology, 2014
A comprehensive study on the methanol and waste plastic oil as an alternative fuel has been carri... more A comprehensive study on the methanol and waste plastic oil as an alternative fuel has been carried out. This report deals with the exhaust emission of waste plastic fuel on twin cylinder diesel engine. The objectives of this report are to analyse the fuel consumption and the emission characteristic of a twin cylinder diesel engine that are using waste plastic oil compared to usage of ordinary diesel that are available in the market. This report describes the setups and the procedures for the experiment which is to analyse the emission characteristics and fuel consumption of diesel engine due to usage of the both fuels. Detail studies about the experimental setup and components have been done before the experiment started. Data that are required for the analysis is observed from the experiments. Calculations and analysis have been done after all the required data needed for the thesis is obtained. The experiment used diesel engine with no load which means no load exerted on it. A fo...
The widespread use of carbendazim insecticides has caused substantial concerns to human health du... more The widespread use of carbendazim insecticides has caused substantial concerns to human health due to their coexistence, high toxicity, and persistence. Therefore, it is crucial to develop a carbendazim detection more important for the protection of both humans and the environment safety. A graphitic carbon nitride/europium molybdate (g-C3N4/EuMoO4) composite was fabricated using a simple coprecipitation method and utilized for the selective detection of carbendazim. The glassy carbon electrode (GCE) was fabricated with g-C3N4/EuMoO4 composite electrode (GCE/g-C3N4/EuMoO4) was simple, affordable, and offers an excellent platform for the detection of carbendazim. The structure formation was validated by suitable microscopic and spectroscopic techniques. Under optimal conditions, the GCE/g-C3N4/EuMoO4 electrode showed excellent electrochemical properties for the detection of carbendazim with a low detection limit (0.04 μM) (S/N = 3), a large linear response range of 50–400 μM, and hig...
This paper gives a review of the vibration characteristics and its analysis associated with two s... more This paper gives a review of the vibration characteristics and its analysis associated with two stroke low speed marine diesel engines and its counteract measures.Marine diesel engines are variable speed engines and face resonance vibration in a narrow band speed within its speed range and this band is called as barred speed range. The historical strategy for vibration control has been sub-critical design criteria. This strategy adopts vibration analysis of local primary forces of machinery components and thereby neglects the impact of secondary forces. Recently, Global vibration analysis has been adopted to reduce the influence of barred speed rangeand secondary excitations. In this paper, we study the performance comparison of both sub-critical design criteria and global vibration analysis.
In this work, the hydrogenation of the anisole and acetophenone reaction over β-zeolite (BEA) is ... more In this work, the hydrogenation of the anisole and acetophenone reaction over β-zeolite (BEA) is reported. The parent zeolite obtained from a commercial source was modified by various treatments, such as dealumination, desilication, and ion exchange, to increase its activity in the acylation reaction. In the present study, the SiO 2 /Al 2 O 3 ratio (SAR = 25) of the parent BEA was altered by dealumination with HNO 3 (to SAR, 58, 88, and 170) and by desilication with tetrapropylammonium hydroxide. X-ray diffraction results showed that the BEA structure was maintained after various treatments. All of the catalysts were tested in the hydrogenation of the anisole and acetophenone reaction. When the reaction was carried out using 0.5 wt % Pd/BEA(58) at 155°C and 25 bar H 2 pressure, acylation products were obtained. These studies point out that it is not possible to carry out both acylation of anisole and hydrogenation of ketone in a single pot and ketone needs to be separated from anisole prior to its hydrogenation. Summing up, the studies reveal that BEA modified by mild dealumination/desilication is suitable for the acylation of anisole with long-chain acids. Also, acylation over BEA produces mainly the p-acylated product (ketone), which is often the desired product. Pd/BEA is a good catalyst for the hydrogenation of ketone to alcohol (another desired product) or the alkyl aromatic hydrocarbon.
Among the many industrially important zeolites, mordenite is found to be interesting because of i... more Among the many industrially important zeolites, mordenite is found to be interesting because of its unique and exceptional physical and chemical properties.
This research demonstrates a process here to convert polypropylene pyrolysis oil (PPO) 34 to dies... more This research demonstrates a process here to convert polypropylene pyrolysis oil (PPO) 34 to diesel. The hydroprocessing of PPO (HPPO-B) utilizing Ni-Mo/Lap bimetal catalyst has 35 been attempted in this study. Hydroprocessing of plastic pyrolysis oil had been attempted earlier, but the hydroprocessing of PPO utilizing a bimetal catalyst and the corresponding 37 validation suites consisting of physicochemical properties, composition comparison with diesel 38 and diesel engine trials have not yet been reported. The physicochemical properties of the 39 produced HPPO-B matched EN590 standard (European diesel standards) requirements. The 40 hydroprocess conditions (70 bar and 350 °C) and the synthesized Ni-Mo/modified Lap catalyst 41 has been responsible for producing n-alkanes, iso-alkanes and aromatics in proportions which 42 gave a 95% match with diesel. Diesel engine combustion and emissions of HPPO-B matched 43 diesel. HPPO-B provides the opportunity to utilize plastic solid waste (PSW) as a transport 44 fuel. The results of HPPO-B inspire and encourages to pursue the hydroprocess path for 45 protecting the environment from hazardous plastic solid waste (PSW).
Exploring the catalytic efficiency of ionic liquid supported on mesoporous material as heterogene... more Exploring the catalytic efficiency of ionic liquid supported on mesoporous material as heterogeneous organ catalysts for example, 1-Ethyl-3-methylimidazolium Triflate and 1-Ethyl-3-methylimidazolium chloride + AlCl 3 (different ratio) immobilized on SBA-15 which contains 0.5% of platinum with regards to isomerization of n-pentane and n-hexane along with commercial light naphtha feed conversion reactions. The prepared materials were characterized by a number of instrumental methods, which include temperature-programmed desorption to evaluate acid strength. The reactions were performed in a fixed-bed stainless steel reactor having high-pressure by the down-flow method. This valuable novel isomerization reaction was strongly influenced by a number of key parameters, for instance, temperature, pressure, weight hourly space velocity, and flow rate of H 2, which are discussed in detail. The Pt/EMIM-AlCl 4 (1:1)20/SBA-15 ionic liquid catalyst showed superior catalytic performance out of the four catalytic system examined towards the above reactions which is undoubtedly because of its significant turnover frequencies (TOF) values of 8.6 s-1 and 8.5 s-1 and specific reaction rates (SRR) values of 8.01 x 10-4 mol g-1 s-1 and 8.00 x 10-4 mol g-1 s-1 for n-pentane and n-hexane correspondingly. The order of catalytic activity is: Pt/EMIM-AlCl 4 (1:1)20/SBA-15 > Pt-EMIM-Tf/SBA-15 > Pt/EMIM-Al 2 Cl 7 (1:2)20/SBA-15 > Pt-EMIM-Al 2 Cl 7 (1:2)30/SBA-15.
International Journal of Vehicle Structures and Systems, 2017
Man Diesel and Turbo G-Type ultra long stroke marine diesel engine was introduced in October 2010... more Man Diesel and Turbo G-Type ultra long stroke marine diesel engine was introduced in October 2010.This ultra long stroke means it has been designed to have reduced engine speeds and there by achieving high efficiency ships with reduced fuel consumption as well as reduced CO2 emissions. The ultra long stroke diesel engine with capability of using large size propeller and there by engines with comparatively low speeds can be used for propulsions of large bulk carriers and oil tankers. This arrangement facilitates the effective implementation of EEDI. In this paper we review the effectiveness of this engine in implementation and achievement of EEDI and thereby achieving reduced CO2 emissions. In this paper, we also study the selection of propeller sizes to achieve the optimum design ship speeds and thereby comply with EEDI requirements.
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
Mercury (Hg 2þ) is considered as a dangerous toxic element that easily affects human and environm... more Mercury (Hg 2þ) is considered as a dangerous toxic element that easily affects human and environmental ecosystem. For this reason, need to develop sensitive and selective detection of Hg 2þ is more consideration. Platinum (Pt) incorporated dealuminated (D) mordenite decorated modified glassy carbon electrode (GCE) used for the electrochemical detection of Hg 2þ. Because, the Pt/D-mordenite modified electrode have mesostructured properties, active surface area, high electron transfers properties and sensitivity. The prepared electrode was characterized by different microscopic and spectroscopic technique. An electrochemical behavior of the electrode was identified by differential pulse voltammetry (DPV) and cyclic voltammetry (CV) technique. The GCE/Pt/Dmordenite electrode exhibit the higher peak current response towards the detection of Hg 2þ metal ions than that of the other modified electrodes. Because, mordenite could provide higher active surface and Pt attributed to the higher electrocatalytic activity. The GCE/Pt/D-mordenite electrode exhibited an excellent detection limit (3.4 nM), higher sensitivity (11.2598 μA μM À 1 cm À 2), long linear range (0.1-220 μM), excellent selectivity, repeatability and reproducibility towards the detection of Hg 2þ ions. The optimization parameters such as effect of the accumulating time, pH, and scanning potential towards the detection of Hg 2þ ions were examined. Further, the interference studies show that interfering common metal ions had no influence on the Hg 2þ ions response. Thus, the GCE/Pt/D-mordenite electrode as a suitable electrochemical sensor for the detection of Hg 2þ metal ions in the waste water. The obtained Hg 2þ ions detection level (LOD) was below the U.S. Environmental Protection Agency (EPA) and the World's Health Organization (WHO) guideline level.
Synthesis of NieMg modified mesoporous silica and alumina catalysts. Investigation of catalytic a... more Synthesis of NieMg modified mesoporous silica and alumina catalysts. Investigation of catalytic activity towards hydrodeoxygenation of eugenol under different reaction condition. Mg is high basicity to facilitating transport of eugenol in turn to the interface of Ni catalysts. Ni/Mg-SA (10) catalysts high oxygen removal efficiency of 75% was achieved. The experimental investigation of
Catalytic activity of ratio-dependent SBA-15 supported zirconia catalysts for highly selective ox... more Catalytic activity of ratio-dependent SBA-15 supported zirconia catalysts for highly selective oxidation of benzyl alcohol to benzaldehyde and environmental pollutant heavy metal ions detection,
IOP Conference Series: Materials Science and Engineering, 2017
The purpose ofthis study is to review the existing literature about chemical recycling of plastic... more The purpose ofthis study is to review the existing literature about chemical recycling of plastic waste and its potential as fuel for diesel engines.This is a review covering on the field of converting waste plastics into liquid hydrocarbon fuels for diesel engines. Disposal and recycling of waste plastics have become an incremental problem and environmental threat with increasing demand for plastics. One of the effective measures is by converting waste plastic into combustible hydrocarbon liquid as an alternative fuel for running diesel engines. Continued research efforts have been taken by researchers to convert waste plastic in to combustible pyrolysis oil as alternate fuel for diesel engines.An existing literature focuses on the study of chemical structure of the waste plastic pyrolysis compared with diesel oil. Converting waste plastics into fuel oil by different catalysts in catalytic pyrolysis process also reviewed in this paper. The methodology with subsequent hydro treating and hydrocracking of waste plastic pyrolysis oil can reduce unsaturated hydrocarbon bonds which would improve the combustion performance in diesel engines as an alternate fuel.
International Journal of Engineering & Technology, 2014
A comprehensive study on the methanol and waste plastic oil as an alternative fuel has been carri... more A comprehensive study on the methanol and waste plastic oil as an alternative fuel has been carried out. This report deals with the exhaust emission of waste plastic fuel on twin cylinder diesel engine. The objectives of this report are to analyse the fuel consumption and the emission characteristic of a twin cylinder diesel engine that are using waste plastic oil compared to usage of ordinary diesel that are available in the market. This report describes the setups and the procedures for the experiment which is to analyse the emission characteristics and fuel consumption of diesel engine due to usage of the both fuels. Detail studies about the experimental setup and components have been done before the experiment started. Data that are required for the analysis is observed from the experiments. Calculations and analysis have been done after all the required data needed for the thesis is obtained. The experiment used diesel engine with no load which means no load exerted on it. A fo...
Uploads
Papers by V L Mangesh