Subhashish Dey

• Gudlavalleru Engineering College

The yearly production of plastic garbage is rising in the current environment as a result of the fast population rise. Recycling and reusing plastic trash is essential for sustainable development. The need of the hour is to utilize waste polythene for various supporting reasons since it is not biodegradable. These materials are made of polymers lik...

Cold-formed steel members (CFSM) are commonly utilized in construction because of their lightweight characteristics, favorable engineering features, and cost efficiency. This study examined the flexural characteristics of two different CFSM shapes, HAT and Z sections, with and without lips. The study involved experimental testing, theoretical analy...

The cement industry is the primary source of environmental pollution as it intakes a huge amount of energy in the production and releases a lot of CO2, which contributes to global warming. To reduce the use of cement for energy consumption, the use of supplementary cementitious materials (SCMs) like Fly ash (FA) and Silica fume (SF) in concrete is...

Using different types of software in the Architecture, Engineering and Construction (AEC) industry allows an emerging new trend, where the traditional way of designing and estimating an engineering structure will consume a lot of time and workforce. The intervention of software packages shows the best results and can be seen as a better replacement...

The current review paper had delivered a broad idea of the present status of experience on service life prediction (SLP), durability, chloride attack, corrosion and chloride penetration (CP) in concrete.This article starts by a briefing past of the research in this field, followed by a detailed information of the procedures of chloride attack and c...

India is one of the countries with the strongest agricultural production, hence leading to accumulation of the wastes and therefore leading pollution to the environment. Researchers are using different methods for using this agricultural and industrial waste by-products for construction purposes to safeguard natural sources like limestone, and rive...

The bond between steel reinforcing bars and concrete is critical to reinforced concrete’s successful functioning as a composite element. Dysfunction of this bond can result in catastrophic building and infrastructure failure. Concrete strength and reinforcement characteristics such as embedment length, ribs, diameter, and confinement in concrete ar...

The present building retrofits have huge prospects for reducing global energy consumption and greenhouse gas emission. Consequently, it is regarded as one of the primary low-cost strategies for achieving sustainable development in the built environment. Although various retrofitting solutions are available, identifying the most cost-effective proce...

The bond between steel reinforcing bars and concrete is critical to reinforced concrete's successful functioning as a composite element. Dysfunction of this bond can result in catastrophic building and infrastructure failure. Concrete strength and reinforcement characteristics such as embedment length, ribs, diameter, and confinement in concrete ar...

Ever since previously several decades, there has been a severe problem with plastic waste disposal and contamination due to the improper use of plastics for a variety of applications, including packaging, transportation, manufacturing, and agriculture in rural as well as urban regions. It takes about 100 years for plastic bags to decompose in an ef...

Modeling surface water quality has become crucial in providing better strategies for managing surface water resources, and adequate findings need accurate and geographically dispersed data. Hydrogeological modeling of these data sets is possible using empirically-based models. The other statistical models are also an alternative approach. In this s...

Phosphorus acts as a vital part in the improvement of environment, manufacturing and agriculture. However, it can also become a contaminant in water bodies, posing a danger to the human, animals and the ecosystems. To address this issue, different methods exist for removing phosphorus from water, with bio-sorption being a mainly effective and eco-f...

This experimental work studied the mix design, mechanical properties and durability properties for G40 and G60 Quaternary Blended Geopolymer Concrete. Quaternary means fourth in sequence; hence Geopolymer Concrete is composed of four binder materials: fly ash, ground granulated blast furnace slag (GGBS), rice husk ash, and Metakaolin. For the Binar...

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The pressure of competitive and dynamic markets has contributed to the provision of these services. A booming financial market holds the interest of most of the Indian today. The banks are no longer the means of saving money and taking loans but they have turned into one stop any financial need by a common man. For banks seeking to improve their pe...

Progressive collapse is a catastrophic chain reaction of failure of a structure that is caused due to loss of vertical load bearing element of the structure, resulting damage of a part of the structure or entire structure. In our research work 10 storey regular Reinforced Concrete framed structure is considered and is seismically designed with IS 1...

Energy is ability or capacity to do work. The renewable energy sources are non-conventional and environmental friendly in nature. The renewable energy technology is a direct substitute of recent technology. With the help of renewable energy we can save more energy, make better environment by the replacement of fossil fuels. In the last two to three...

In recent years there has been more raise in manufacturing dissipate materials and bi-products produces due to the more enlargement rate of inhabitants. By the growth of industries and technology enlargement of consumption, due to this consumption raw materials produced more and more therefore the environment going to be polluted. The raw materials...

Heavy metals in drinking water pose a threat to the human health. The toxic metals be added into water deliver by manufacturing and housing waste or still from acidic precipitation breaking behind soils and producing into streams, lakes, rivers and groundwater. Iron and phosphorus plays an important role in the development of ecosystems, agricultur...

The pure water contains 3% in the global. Human and manufacturing performances create and release wastes having iron and phosphorous metals into the water assets production them polluted and dangerous human health and environment. The usual processes for the elimination of iron and phosphorous metal ions those by chemical precipitation and membrane...

The yearly production of plastic garbage is rising in the current environment as a result of the fast population rise. Recycling and reusing plastic trash is essential for sustainable development. The need of the hour is to utilize waste polythene for various supporting reasons since it is not biodegradable. These materials are made of polymers lik...

Automobile exhaust contributes the largest sources of carbon monoxide (CO) into the environment. To control this CO pollution, the catalytic converters have been discovered. The catalytic converters have been invented for regulating the CO discharge. There are many types of catalysts have been investigated for CO emission control purposes. Inorgani...

The toxic metals present in drinking water pose a threat to the human health. The huge populations are effected to poisonous metals mainly by the water uses. Iron is a heavy metal and found in the earth crust. The presence of iron in water might be recognized to the mixing of rocks and minerals, acid mine drainage, landfill leachate or industries w...

Water is an essential natural resource for sustaining life and it is not free everywhere. Ammonia (NH3) in drinking water may be beneficial or harmful depending on their concentration in water. NH3 is colorless, pungent gas composed of nitrogen and hydrogen. The acute exposures to high levels of ammonia have also been associated with diseases of th...

Buildings account for 25% of carbon emissions and 32% of ultimate energy consumption. Urbanization has led to an increase in the requirement for infrastructure in general, which has led to an increase in the demand for housing. Building has a significant influence on the market, community, and the environment, and these issues must be addressed. Bu...

The presence of pollutants in aqueous solution, particularly from hazardous heavy metals and metalloids, is an important environmental and social problem. Nitrate is an inorganic compound that occurs under a variety of conditions in the environment, both naturally and synthetically. Nitrate in groundwater originates primarily from the fertilizers,...

The present study is focused on the compressive strength, water retention, and workability by varying the percentage of poly ethylene glycol 200 and liquid paraffin wax from 0% to 1% by weight of cement for self‐compacting concrete and compares it with conventional SCC. Percentages of 0.1%, 0.5%, and 1% (in proportion to the weight of cement) were...

Colour is a key component to increase the ultimate appetizing value and consumer acceptance towards foods and beverages. Synthetic food colours have been increasingly used than natural food colours by food manufacturers to attain certain properties such as low cost, improved appearance, high colour intensity, more colour stability and uniformity. V...

As the scarcity of water is rapidly increasing everyday particularly during the summer season, the demand for water also substantially increases. Previously around thirty to forty years back, the major part of the earth is unpaved and the amount of infrastructure built on the earth were also very low, hence during the monsoon season the rainwater e...

The increasing concentration of carbon monoxide (CO) present in the atmosphere showed worse health and environmental problems. Catalyze CO into CO2 believed as one efficient and promising techniques for eliminating this contaminant. The iron (Fe) nanoparticles catalysts have been widely investigated over the last few decades due to their unique pro...

The present study is aimed to develop a high strength porcelain insulating material from locally available low cost raw porcelain materials by reinforcement of TiO2 (0 to 10 in wt.%) as a substitute replacing ZrO2 in the base porcelain material composition. Base porcelain composition was prepared from the mixture of kaolin, ball clay, quartz, felds...

Ambient temperature catalytic oxidation of carbon monoxide (CO) has been widely applied in catalytic converters for cleaning of air and lowering the automotive emissions. Carbon monoxide is a very dangerous gas present in automobile exhausts. Manganese oxide catalysts have generated much interest over the last two to three decades due to their diff...

The rhodium (Rh) and ruthenium (Ru) are very important catalytic materials in various oxidation reactions. It is the best monometallic catalyst for oxidation of carbon monoxide (CO) and practically used in residential catalytic converters. These catalysts are active for CO oxidation at a low temperature. The activity of Ru/Rh catalysts is strongly...

The CuMnOx and ceria doped CuMnOx catalysts (with ceria loadings in the range 0.5–3 wt.%) were synthesized by using the Co-precipitation method and characterized by various methods as discussed in the manuscript. Carbon monoxide (CO) is an individual one of the most toxic gases presents in the atmosphere and ambient-temperature complete oxidation o...

The application of iron (Fe) or nickel (Ni) doping over hopcalite (CuMnOx) catalyst highly effects on their structural properties and catalytic performance for ambient conditions carbon monoxide (CO) oxidation have been investigated. The NiO and Fe2O3 phases are easily isolated over the CuMnOx catalyst. The (Fe or Ni) doping was done in the range o...

The conversion of carbon monoxide (CO) at ambient condition is major procedure for human life protection. The Hopcalite (CuMnOx) is one of the best known catalysts for lower temperature CO conversion. The synthesis of hopcalite catalysts by various methods including Co-precipitation (CP), Sol-gel (SG), Reactive grinding (RG), Impregnation (I) and P...

The noble metal catalysts are most commonly considered to be used in an automobile as a catalytic converter. Palladium (Pd) is a highly active catalyst for carbon monoxide (CO) oxidation in platinum group metals. It is very active for low-temperature CO oxidation if dispersed on suitable metal oxides and composite oxides. The oxidized Pd metal nano...

The transition metal catalysts have much concerned over the last two to three decades due to their different properties from their bulk-counterparts, which cover the way for their application in various fields. It has shown superior efficiency in selectivity, performances, and stability to the heterogeneous catalysis. Carbon monoxide (CO) is a very...

This paper highlights the strength and durability characteristics of geopolymer concrete (GPC) developed with ground‐granulated blast furnace slag (GGBS) and metakaolin (MK) as binders. Sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) were used as alkaline activators of GPC. The variable parameters considered in this research work were proport...

Silver (Ag) is the best catalyst for many catalytic oxidation reactions. It is highly active for total oxidation of carbon monoxide (CO) at a lower temperature. The performance of silver catalysts depending upon their structure, surface active sites, and various Ag-O interactions. The other factors effects on the silver catalysts performances are s...

Carbon monoxide (CO) is one of the most poisonous gases present in the atmosphere. It also called the silent killer of twenty-first century. CO is produced into the environment by incomplete combustion of carbon containing compounds. It causes lots of people die every year including the firefighters. The main aim of this work to find out the litera...

Carbon monoxide (CO) is a poisonous gas particularly to all leaving being present in the atmosphere. An estimate has shown that the vehicular exhaust contributes the largest source of CO pollution in developed countries. Due to the exponentially increasing number of automobile vehicles on roads, CO concentrations have reached an alarming level in u...

The oxidation of carbon monoxide (CO) is highly applications in the fields of gas masks, gas sensors and the catalytic converter in fuel cells. These reactions attracts much attention both in their primary and functional research of catalysis. Productions of cerium (Ce) particles for CO oxidation catalysts, mainly in the last three decades are revi...

Cobalt-oxide catalysts has shown a huge potential for CO oxidation in a catalytic converter for their high thermal stability and tailoring flexibility. A novel route of reactive calcination (RC) of Co-salts (oxalate = O, oxalate synthesize by reactive grinding = ORG, carbonate basic = C, acetate = A, nitrate = N) for the preparation of highly activ...

Carbon monoxide (CO) is a poisonous atmospheric pollutant. It highly affects human beings, plants, animals and environment. Automobile exhaust is the largest source of CO emission in the environment. To control this automobile exhaust pollution, the catalytic converters are used. Many types of catalysts have been investigated for CO oxidation purpo...

Carbon monoxide (CO) oxidation has been huge interest in recent years due to its importance in various fields. The applications of spinels catalysts for catalytic oxidation of CO are discussed in this review. Spinels with general formulation A2+B3+2O24 which crystallize, the oxide anions set in a cubic close-packed lattice and cations. The spinel c...

Catalytic conversion of carbon monoxide (CO) is one of the most important process for human health protection. CO is also called the unnoticed poisons and silent killer of 21st century. The effect of inhaling CO can cause of hypoxic injury, neurological break and even death. Due to CO poisoning decay vegetation life and increases in global warming...

The present research investigated that the addition of silver (Ag), by the deposition-precipitation method, to a mixed CuMnOx catalyst can improve the activity of carbon monoxide (CO) oxidation. The CuMnOx catalyst promoting by 3 wt.% Ag shows higher catalytic activity than that of doping by 1, 2, 4 and 5 wt.% Ag. The loading of Ag is expected to i...

Hopcalite (CuMnOx) is a highly efficient catalyst for low temperature oxidation of Carbon monoxide (CO). As synthesized by Co-precipitation method, it shows the high activity for CO oxidation. The coordination between CuO and MnOx in CuMnOx catalyst improves the catalytic activity for CO oxidation. In this research work, we investigate the individu...

Energy Conservation Building Code (ECBC) sets minimum standards for the design and construction of buildings. It (ECBC) promotes the energy efficient design or retrofits of the buildings without affecting their functions, comfort, health and productivity. It also serves appropriate regards for economic considerations of the building by lowering the...

The hopcalite (CuMnOx) catalyst is a well-known catalyst for CO oxidation at a low temperature and it is synthesized by the co-precipitation method with different types of precursors. Activity of the CuMnOx catalysts for CO oxidation is strongly dependent upon the combination of precursors, ranking in order {Mn(Ac)2 + Cu(NO3)2} > {Mn(Ac)2 + Cu(Ac)2...

In this research work, we have discussed about the effect of catalyst preparation and their calcination strategy on the characterization property and activity of the final catalyst. The AgCoO2 catalyst was prepared by the co-precipitation method gave the highest activities for the preferred reactions. The recent study was carried out in the laborat...

The diesel engine generally achieves the highest fuel, energy, and thermal efficiency due to its very high compression/expansion ratio (14:1 to 25:1). Diesel engines can have a thermal efficiency that exceeds 50%. The main problem is that they emit more pollution like fine black soot particulates (C8H to C10H) and nitrogen oxides (NOX). These pollu...

The different Ag and K substituted perovskite catalysts including base catalyst were LaMnO3 by the solid state method and the diesel soot was prepared in the laboratory. Their structures and physico-chemical properties were characterized by X-ray diffraction (XRD), BET, SEM, H2-TPR, and XPS techniques. The Ag Substituted at A-site perovskite struct...

This paper discusses, the nanometric size effects, including intrinsic factors such as structure, the nature of A-site ion substitution, B-site ions, on the redox properties of nanometric La1−xKxFeO3, La1−xKxCoO3, La1−xNaxMnO3, La1−xKxMnO3, perovskite-type oxide catalysts. The external factors of catalyst and soot particulate, the content of NO and...

Carbon monoxide (CO) is a poisonous gas, recognized as a silent killer for the 21st century. It is produced from the partial oxidation of carbon containing compounds. The catalytic oxidation of CO receives a huge attention due to its applications in different fields. In the present work, hopcalite (CuMnOx) catalysts were synthesized using a co-prec...

The low temperature catalytic oxidation of CO conceivably the most extensively studied reaction in the history of heterogeneous catalyst and it is important in the context of cleaning the air and lowering the automotive emissions. Among a variety of manganese oxides catalyst, the Mn2O3 is considered to be the most favorable with respect to the cata...

The effect of surface enrichment in mixed metal oxides of CuMnCe, CuMnCo, and CuCeZr catalysts is highly effective for CO oxidation. The present work describes the preparation of CuMnCe, CuMnCo and CuCeZr catalysts and the characterization techniques applied to gain information about the catalyst structure and activity. Among the catalysts, CuMnCe...

Carbon monoxide (CO) is a poisonous gas, recognized as a silent killer. The gas is produced by incomplete combustion of carbonaceous fuel. Recent studies have shown that hopcalite group is one of the promising catalysts for CO oxidation at low temperature. In this study, hopcalite (CuMnOx) catalysts were prepared by KMnO4 co-precipitation method fo...

The hopcalite (CuMnOx) catalyst is a well-known catalyst for oxidation of CO at ambient temperature. It has prepared by co-precipitation method and the preparation parameters were like Copper/Manganese (Cu:Mn) molar ratios, drying temperature, drying time, calcination temperature and calcination time has an influence on activity of the resultant ca...

The rare earth-doped CuMnOx catalysts were prepared by co-precipitation method. The CuMnOx catalyst was doped with (1.5 wt.%) CeOx, (1.0 wt.%) AgOx, and (0.5 wt.%) of AuOx by the dry deposition method. After the precipitation, filtration, and washing process, drying the sample at 110 oC for 16 hr in an oven and calcined at 300 oC temperature for 2...

The CuMnAgOx catalyst was prepared by the deposition-precipitation method and followed by calcination at 300°C, which showed excellent activity and stability for carbon monoxide (CO) oxidation at low temperature. This paper describes the kinetics of catalytic air oxidation of CO over the CuMnAgOx catalyst and their kinetics data were collected in a...

The addition of γ-Al2O3 support into the CuMnOx catalyst enhances the dispersion capacity as compared to unsupported CuMnO x catalysts. There exist strong interactions between the copper, manganese oxide and γ-Al2O3 support. The effect of γ-Al2O3 on the dispersion, active states and reduction behavior of surface supported CuMnOx catalysts have been...

This article was retracted due to the following reasons. Retraction note here: https://doi.org/10.9767/bcrec.12.2.1202.App.7 RETRACTION TO:Dhal, G.C., Dey, S., Prasad, R., Mohan, D. (2017). Simultaneous Elimination of Soot and NOX through Silver-Barium Based Catalytic Materials. Bulletin of Chemical Reaction Engineering & Catalysis, 12 (1): 71-80 (...

The ambient temperature carbon monoxide oxidation is one of the important topics in the present scenario. In this paper, we prepared various types of catalysts from the precursors of cobalt nitrate, cerium nitrate, copper nitrate and manganese nitrate for the oxidation of CO. Among the prepared catalysts, the cerium nitrate precursor showed the bes...

Solution Combustion synthesis has been applied to LaFeO3 production with a view to boosting its activity for diesel engine exhaust gas purification by enhancing its specific surface area. With a highly exothermic and self-sustaining reaction, this oxide can be quickly prepared from an aqueous solution of metal nitrates (oxidisers) and urea (fuel)....

1. River flow regulation and fragmentation is a global threat to freshwater biodiversity, ecosystem processes, and associated human activities. Large dams in the Ganges river basin of the Indian subcontinent have severely altered natural flow regimes, particularly in the low-flow dry season. Altered flows could have negative impacts on endangered s...