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Investigation of Particulate Matter Performances in relation to Chalk Selection in Classroom Environment(Indoor & Built Environment)
(S. Goel, R. Patidar, K. Bari, RS Thakur
,26(1),,119-131,Year : 2015)
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This study aims to understand dust generation in classroom indoor for different chalk varieties and their potential doses to receptors in correlation with their physicochemical properties. Two representative chalks of extruded calcium carbonate and moulded gypsum type (total four) were used for writing on ceramic and wooden boards. Chalks were characterized using analytical techniques. Investigation of Particulate Matter (PM): PM2.5, PM10 and Total Suspended Particulate (TSP) concentrations in classroom air generated during the writing and wiping with chalk and board system was done. Dust collected beneath the board was analyzed for particle size distribution. Calcium carbonate made dustless chalks generate less PM during writing and wiping. They are quick settling and non-interacting with receptors, and deliver better utilization of material as compared to gypsum chalks. Physicochemical properties of the chalk constituents were invoked to explain the dust generation and its impact on the user. Surprisingly, dustless chalk made from Gypsum cannot be called really as dustless because of more PM emissions. The age-specific average potential dose for both PM10 and PM2.5 is higher for gypsum chalk as compared to the calcium carbonate chalks. The highest dose was estimated for the children in the age group of 6–11 years
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Screening bamboo species for salt tolerance using growth parameters , physiological response and osmolytes accumulation as effective indicators(Chemistry and Ecology)
(Pulavarty, A.;
Sarangi, B. K,344,,340- 354,Year : 2015)
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No information is available
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Passive Solar still: Recent advancement in design and related Performance (Environment Technology)
(Kanchan Kumari
,31,,1-59. ,Year : 2018)
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Present review paper mainly focuses on different varieties of solar stills and highlights mostly the passive solar still with advanced modifications in the design and development of material, single and multi-effect solar still with augmentation of different materials, energy absorbing, insulators, mechanisms of heat and mass transfer to improve the loss of heat and enhance the productivity of solar still. The cost-benefit analysis along with the progressive advancement for solar stills is the major highlights of this review. To increase the output of solar still nowadays, applications of advance modifications is one of the promising tools, and it is anticipated that shortly more vigor will be added in this area with the modifications in designs of solar stills.
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Investigation of polybrominated diphenyl ethers in old consumer products in India(Env. Monitoring and Assessment)
(Kanchan Kumari,186(5),,3001-9,Year : 2014)
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Polybrominated diphenyl ethers (PBDEs) used extensively over the past 3 decades as flame retardants in most types of polymers, all over the world, have been identified as global pollutants. PBDEs pose various health problems such as thyroid hormone disruption, permanent learning and memory impairment, behavioral changes, hearing deficits, delayed puberty onset, fetal malformations, and possibly cancer. Many measurements of PBDEs in various matrices from Sweden, Holland, Japan, the USA, and elsewhere have been reported, but few measurements are available for India. In this study, a preliminary screening of different congeners of PBDEs has been performed in different old electronic and consumer products with an objective to build capacity in order to analyze PBDEs and BFRs. Six different samples, foam from upholstery, motherboard of a computer, children toy composite sample, old vanishing window blind sample, electrical wire sample, and PVC flooring sample, were collected and analyzed for the presence of the following PBDE congeners: BDE-28, BDE-47, BDE-99, BDE-100, BDE-153, BDE-154, BDE-183, and BDE-209. It was found that three out of six samples were positive for the presence of PBDEs. Three congeners were detected in the samples, i.e., BDE-47, BDE-153, and BDE-209, of which, highest concentration was of BDE-209. Among the samples, motherboard of computer showed the highest concentration of BDE-209 followed by window blind and foam from upholstery. The results of this preliminary investigation indicate that PBDEs are still present in the old consumer products which can be an important additional source of exposure to the population.
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Co-composting of vegetable wastes and carton: Effect of carton composition and parameter variations(Bioresource Technology)
(Rawoteea, S.A.,?Mudhoo,?A.,?&Kumar, S.,227, ,,171-178,Year : 2017)
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The aim of the study was to investigate the effects of carton in the composting process of mixed vegetable wastes using an experimental composter of capacity 80 L. Three different mixes were set-up (Mixes 1, 2 and 3) which consisted of vegetable wastes, 2.0 kg paper and bulking agents, vegetable wastes, 1.5 kg carton and bulking agents, vegetable wastes, 4.5 kg carton and bulking agents, respectively. Temperature evolution, pH trends, moisture levels, respiration rates, percentage volatile solids and electrical conductivity were monitored for a period of 50 days. The system remained under thermophilic conditions for a very short period due to the small size of the reactor. The three mixes did not exceed a temperature of 55 C, where sanitization takes place by the destruction of pathogens. The highest peak of CO2 evolution was observed in Mix 2 indicating that maximum microbial degradation took place in that mix.
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Emission, speciation, and evaluation of impacts of non-methane volatile organic compounds from open dump site(Journal of the Air & Waste Management Association)
(D Majumdar, S Ray, S Chakraborty, PS Rao, AB Akolkar, M Chowdhury, A Srivastava. ,64 7,,834-845,Year : 2014)
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Surface emission from Dhapa, the only garbage disposal ground in Kolkata, is a matter of concern to the local environment and also fuels the issues of occupational and environmental health. Surface emission of the Dhapa landfill site was studied using a flux chamber measurement for nonmethane volatile organic compounds (NMVOCs). Eighteen noncarbonyl volatile organic compounds (VOCs) and 14 carbonyl VOCs, including suspected and known carcinogens, were found in appreciable concentrations. The concentrations of the target species in the flux chamber were found to be significantly higher for most of the species in summer than winter. Surface emission rate of landfill gas was estimated by using two different approaches to assess the applicability for an open landfill site. It was found that the emissions predicted using the model Land GEM version 3.02 is one to two orders less than the emission rate calculated from flux chamber measurement for the target species. Tropospheric ozone formation has a serious impact for NMVOC emission. The total ozone-forming potential (OFP) of the Dhapa dumping ground considering all target NMVOCs was estimated to be 4.9Eþ04 and 1.2Eþ05 g/day in winter and summer, respectively. Also, it was found that carbonyl VOCs play a more important role than noncarbonyl VOCs for tropospheric ozone formation. Cumulative cancer risk estimated for all the carcinogenic species was found to be 2792 for 1 million population, while the total noncancer hazard index (HI) was estimated to be 246 for the occupational exposure to different compounds from surface emission to the dump-site workers at Dhapa.
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Extent of sewage pollution in coastal environment of Mumbai, India: an object based image analysis(Water and Environment Journal)
(Ritesh Vijay,Vikash K. Kushwaha, Neha Pandey, Tapas Nandy and S. R. Wate,29,3,365-374,Year : 2016)
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The coastal water quality of Mumbai is deteriorating by receiving partially treated effluent from wastewater treatment facilities, sewage discharges from ocean outfalls and discharges from point and non?point sources in the creek and coast. A novel approach of object?based image analysis has been used in this research study to assess the extent of sewage pollution in the coastal environment of Mumbai. For this, Indian Remote Sensing P6 Linear Imaging Self Scanning IV image was used for multiresolution segmentation and rule?based image classification as per normalised difference water index and normalised difference turbidity index. Water quality regions as per classification were strongly correlated with observed water quality parameters. Based on classified regions and water quality parameters, extent of sewage pollution in the coast was ranked from high to least polluted. The approach developed in this methodology should be tested in similarly polluted waters to ascertain its adaptability for assessing the spatial extent of sewage pollution.
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Nanocrystalline cellulose for removal of tetracycline hydrochloride from water via biosorption: Equilibrium, kinetic and thermodynamic studies(Ecological Engineering)
(M.Rathod, S. Halder and ShaikBasha,84,,240-249,Year : 2015)
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Crystalline nanocellulose, synthesized from green seaweed, Ulva lactuca, was investigated for the sorption of tetracycline hydrochloride (TC) from aqueous solutions. The effects of pH, contact time, concentration of TC and desorption were studied in batch mode. The kinetics of TC biosorption was very fast and reached equilibrium in almost 2 h. The kinetic data was well described by double exponential and the pseudo-second-order kinetic models. Film diffusion is the rate-limiting step for the biosorption of TC on to crystalline nanocellulose. Both Redlich–Peterson (R–P) and Polanyi–Manes (P–M) isotherm models described the equilibrium data well. The values of maximum sorption capacities (6.48–7.73 mg/g for R–P and 6.57–7.96 mg/g for P–M models) increased with temperature. A thermodynamic study (?H° = 22.64 kJ/mol, ?S° = 9.85 kJ/(mol/K)) demonstrated that biosorption of TC is spontaneous, endothermic and an entropy-driven process. The reusability of sorbent was achieved by HNO3 (5 w/w%) with desorption efficiency of 95.20% in 4 h. The overall results have significant implications for the removal of TC from aqueous solution with crystalline nanocellulose.
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N-doped mesoporous alumina for adsorption of carbon dioxide(Journal of Environmental Sciences )
(JA Thote, RV Chatti, KS Iyer, V Kumar, AN Valechha, NK Labhsetwar,24 (11), ,,1979-1984,Year : 2012)
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No information is available
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Assessment of impact of ash ponds on groundwater quality: a case study from Koradi in Central India(International Journal of Environmental Earth Sciences. Springer )
(S.S. Ramya, V.U. Deshmukh, Vijendra J. Khandekar, C. Padmakar, L. Suri Naidu, Piyush K.Mahore, Paras R. Pujari. D. Panaskar, P.K. Labhasetwar and V.V.S. G. Rao ,,,,Year : 2012)
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No information is available
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Particulate and Gases Pollution Control During Idling Condition of Vehicles at Traffic Intersections: A Case Study for Nagpur City(American Journal of Earth Sciences)
(Navneet Kumar, Rajendra Prasad Poluru, Padma S. Rao, Mayuri Shrirang, Ashish P. Patil,,,,Year : 2017)
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Traffic intersections are major contributors for built-up of emissions of air pollutants like PM10, PM2.5, SO2 and NOx from automobiles. The study has been carried out for Nagpur, third largest city in the Indian state of Maharashtra. Emissions of PM10, PM2.5, SO2 and NOx quantified for one month, and control studies from motor vehicles during idling condition at a traffic signal were carried out at three foremost traffic signals of the city. The selected traffic intersections are Law College Square, Medical Square, and Shankar Nagar square. In this study selected parameters Air Metrics measured PM10 PM2.5 SO2 and NOx and followed by titrimetric gaseous impinger system and control of the same assessed by bench scale air pollution control (BAPC) system. Reduction percentages from the BAPC system were obtained as 57.68 & 47.65 for PM10 and PM2.5 respectively whereas for SO2, 70.55 and for NOx, 54.53 obtained
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Nanocellulose for biosorption of chlorpyrifos from water: chemometric optimization, kinetics and equilibrium(Cellulose )
(Pareshkumar G. Moradeeya , Madhava Anil Kumar , Ravikumar B. Thorat, Manali Rathod , Yasmin Khambhaty ,,,1319–1332,Year : 2017)
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The study explores the biosorption potential of nanocellulose (NC) to remove an insecticide, chlorpyrifos (CP), from aqueous solutions using the batch method. Biosorption kinetics were very fast and reached equilibrium in 60 min, and the experimental kinetic data had fit well with the pseudo-second-order model. Film diffusion was the rate-limiting step for the biosorption of CP onto crystalline nanocellulose (CNC). The equilibrium sorption was well described by the Sips and Langmuir isotherm models. The values of maximum sorption capacities (7.237–5.017 mg/g for the Sips and 12.325–7.247 mg/g for the Langmuir model) decreased with an increase in temperature from 288 to 308 K, signifying biosorption of CP is an exothermic process. Based on the central composite design (CCD), two-factor interaction (2FI) and quadratic models, the correlation between the effects of variable parameters on the CP biosorption onto NC was evaluated. The chemometric analyses suggested that 1.5 g/l NC required 20 min to biosorb 5 mg/l CP to yield an efficiency of 99.3%. Overall, the results demonstrated that NCs can be a promising biosorbent for the removal of pesticides from aqueous streams.
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Toxic effect of Ore Mining on Soil and Water Quality at Chhattisgarh(International journal of Research in biosciences, agriculture & Technology)
(,,,,Year : 2018)
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No information is available
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Annotation and De Novo Sequence Characterization of Extracellular B- Fructofranosidase from Penicillium chrysogenum Strain HKF42(Indian Journal of Microbiology)
("Gujar, N.;
Fuke, P.;
Khardenavis, A. A.;
Purohit , H. J.
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,58(2),,227- 233,Year : 2018)
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No information is available
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Integration of biomarker approach in pollution monitoring program of aquatic ecosystem(Book Chapter in Biosynthetic technologies and Environmental Challenges)
(Kanchan Kumari
,,,,Year : 2017)
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Water bodies are subjected to a considerable pressure from sewage and industrial wastes. Monitoring methods adopted so far have helped in the assessment level of contaminants in water but not the interaction of these pollutants with living organisms. Water quality testing programmes use two traditional methods for water quality assessment that includes physico-chemical parameters and bio-monitoring. Looking at the limitations of these two traditional methods, a new method known as ‘biomarkers of pollution’ should be adopted. Evaluating various biomarkers in sentinel species can be of great help in environmental monitoring programme as they forecast various risks and hazards associated with the habitats of aquatic animals. Several countries have adopted Biomarkers in their environmental monitoring programmes; however, to make it a routine and well-recognized tool in the water quality monitoring programme, efforts are still required from scientific communities. The major advantage of Biomarkers is that bioavailability or potential exposure to toxicants can be demonstrated which is not possible in chemical analysis. Persistent organic pollutants (POPs) are chemical substances that do not degrade easily and persist in the environment and detecting some classes of POPs, for example organochlorine compounds, are very difficult as the limits of detection are very low. With the advancement of analytical methods, these chemicals can be now detected in every environmental matrices but changes caused physiologically in living organisms remains unknown. This limitation can be overcome with the help of biomarkers which can detect whether organisms are exposed meaningfully and the physiology is altered in comparison to normal. Whenever any pollutants enter the biological system, it brings molecular changes and the response time of molecular changes are faster than it appears at community level. This leads the scientific communities to start some research work in this area in order to develop some early warning signal or biomarkers. Measurement of molecular changes at the level of body fluids, cells or tissues reflecting an alteration in normal functioning/magnitude due to the presence of toxicants forms the basis of selection of particular parameter as a biomarker. This chapter presents the importance of various core biomarkers used as diagnostic and prognostic tools to monitor the water quality assessing the risks associated with the health of aquatic biota. This is high time to focus on the biological responses which are more relevant to predict the health status of any aquatic ecosystem before occurrence of any catastrophic events which are unmanageable.
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Effect of biochar on bio-electrochemical dye degradation and energyProduction(Bioresource Technology)
(Ayyappan, C.S., Bhalambaal, V.M.,Kumar, S.,251, ,,165-170,Year : 2018)
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No information is available
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Assessment of honking impact on traffic noise in heterogeneous traffic environment of Nagpur, India(Journal of Environmental Health Science and Engineering)
(Ritesh Vijay, A. Sharma, T. Chakrabarti and Rajesh Gupta ,13,,10,Year : 2016)
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Background In context of increasing traffic noise in urban India, the objective of the research study is to assess noise due to heterogeneous traffic conditions and the impact of honking on it. Method Traffic volume, noise levels, honking, road geometry and vehicular speed were measured on national highway, major and minor roads in Nagpur, India. Results Initial study showed lack of correlation between traffic volume and equivalent noise due to some factors, later identified as honking, road geometry and vehicular speed. Further, frequency analysis of traffic noise showed that honking contributed an additional 2 to 5 dB (A) noise, which is quite significant. Vehicular speed was also found to increase traffic noise. Statistical method of analysis of variance (ANOVA) confirms that frequent honking (p?
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Catalytic dehydrogenation of cyclohexane over Ag-M/ACC catalysts for hydrogen supply(International journal of hydrogen energy)
(JV Pande, A Shukla, RB Biniwale,37 8,,6756-6763,Year : 2012)
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No information is available
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A Comprehensive Physico-chemical, Mineralogical, and Morphological Characterization of Indian Mineral wastes(Environmental Monitoring and Assessment)
(Vidyadhar Gedam, Rajesh Jha, Pawan Labhasetwar, Christian Engelsen,,,,Year : 2012)
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No information is available
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Future trend assessment of Regional Climate Variability screening past 20 years meteorological status(Int. J. of Advanced Scientific & Technical Research)
(Anirban Middey and Nimisha Jaiswal, 4 (5) ,,58-73,Year : 2015)
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The tasks of providing multi - decadal climate projections and seasonal climate predictions are of significant societal interest and pose major scientific challenges. The present study describes the global climate system context in which to interpret Nagpur and surrounding region environmental change to support planning and implementation of various strategies in the face of climate change. Here the classification and analysis of various climatic and meteorological parameters has been undertaken that have been proposed as relevant for understanding variations in climatic conditions of the Nagpur region (21.15 ?N, 79.09 ?E). The statistical and numerical analysis of past two decades data has been done. Two patterns of season stand out in our analysis i.e. the winter (December, January, February) and pre - monsoon (March, April, May). Some thermodynamic parameters (CAPE, CIN and sensible heat flux), rainfall, and surface evaporation along with planetary boundary layer have been studied in this work. The results obtained from the statistical analysis of past decades data are being utilized for predicting the future scenario using various trend projection techniques. These experiments, however, are only preliminary, and form the first stage of a wider study into how the climate variability occurs due to such meteorological parameters and in the future under various scenarios of future climate change
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