Phyto-capping: an alternative option for mitigation of lfgs and remediation of landfill leachate (Indian Journal of Experiment Biology)
(Khapre, A., & Kumar, S.
,1414314,,, Year: 2017)
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No information is available
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On H2 supply through liquid organichydrides e Effect of functional groups (International journal of hydrogen energy)
(Shubhangi P. Patil, Ankush B. Bindwal, Yogesh B. Pakade,,42:,,16214-16224, Year: 2017)
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Liquid organic hydride (LOH) based H2 supply systems possess an excellent potential to overcome the obstacles of upcoming ?hydrogen economy?. However, their efficiency mainly relies on the choice of organic hydride and the dehydrogenation catalyst. In the present study, we focused on the former to strengthen the understanding of H2 supply through LOH dehydrogenation. We investigated the role of various functionalities viz., methyl group, N heteroatom, cyclic ring and their combinations in LOH dehydrogenation. Several simple representative LOH's such as methylcyclohexane, piperidine, 4-methylpiperidine and decalin were considered and their dehydrogenation was studied over a 5 wt% Pt/ ACC catalyst in a spray pulse reactor at 350 C. The H2 evolution rates were found to follow the trend: cyclohexane < methylcyclohexane < piperidine < 4-methylpiperidine < decalin. The inductive effects caused by these functional groups and their impact on H2 evolution were comprehensively described. Finally, the results were compared with the benchmark reaction, cyclohexane dehydrogenation to benzene.
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Methyl acrylate modified apple pomace as promising adsorbent for the removal of divalent metal ion from industrial wastewater (Environemental Science and Pollution Research)
(P Chand, M. Bokare, Yogesh B. Pakade,24:,,10454-10465, Year: 2017)
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Polymerized apple pomace (PoAP) surface was evaluated as adsorbent for the removal of Pb+2, Cd+2, and Ni+2 ions from aqueous solution. PoAP was characterized by FTIR, SEM, EDS, XRD, and BET surface area analyzer. Furthermore, the adsorption influencing parameters such as dose, pH, time, concentration, and temperature were optimized for maximum removal of metal ions from aqueous solution. The maximummonolayer adsorption capacity of PoAP was found to be 106, 34.12, and 19.45 mg, for Pb+2, Cd+2, and Ni+2 ions respectively, using the Langmuir isotherm model. The rate of adsorption was evaluated using pseudo-second order kinetics and intra-particle diffusion. The adsorption data followed pseudo-second order kinetic with the correlation coefficient ( r 2) from 0.99 at al l concentration. Thermodynamic study revealed endothermic nature of Pb+2 and Cd+2 adsorption and exothermic for Ni+2 ions. The rate of adsorption for binary and tertiary mixtures of Pb+2, Ni+2, and Cd+2 metal ion was studied using the ideal adsorbed solution theory. The regeneration study revealed that PoAP could be re-utilized up to 4 cycles for Pb+2 and 2 cycles for Cd+2 and Ni+2 ions. PoAP was successfully applied to real industrial wastewater for the removal of Pb+2, Cd+2, and Ni+2 ions.
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The influence of odd-even car trial on fine and coarseparticles in Delhi (Environmental Pollution)
(Kumar P.,Gulia, S., Harrison, R. M.,Khare, M. ,225,,20-30, Year: 2017)
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No information is available
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Water soluble inorganicspecies of PM10 and PM2.5 at an urban site of Delhi, India: Seasonal variability and sources (AtmosphericResearch)
(Saxena, M., Sharma, A. Sen, A. Saxena, P. Saraswati Mandal, T. K.,Sharma, S. K., Sharma, C.,184,,112-125, Year: 2017)
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No information is available
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Seasonal variability in size-segregated airborne bacterial particles and their characterization atdifferent source-sites (Environmental Science and Pollution Research)
(Agarwal, S.,24(15),,13519-13527, Year: 2017)
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No information is available
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Assessment of ambient air quality in the surrounding area of Compost plant Delhi, India (Malaysian Journal of Science)
(Prakash, M., Mandal, P., Chaturvedi, M. K.,Srivastava , A.,,,, Year: 2017)
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No information is available
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Functionalised Adsorbents for Carbon dioxide Capture (Materials Challenges and Testing for Manufacturing, Mobility, Biomedical ...)
(A Bansiwal, V Kumar, P Pillewan, N Labhsetwar, R Biniwale, S Rayalu,,,, Year: 2017)
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No information is available
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Performance Evaluation of Solar Power Based Electrolytic Defluoridation Plants in India (International Journal of Water Resources and Arid Environments )
(Subhash Andey, Pawan Kumar Labhasetwar, Gajanan Khadse, Poonam Gwala, Prashant Pal and Prashant Deshmukh,,,, Year: 2017)
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No information is available
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Impact of sewage discharges on coastal water quality Mumbai, India: present and future scenarios (Environment Monitoring and Assessment)
(Ritesh Vijay, Trupti Mardikar , Rakesh Kumar ,Vol(188) Issue(7) Pages(420),,, Year: 2016)
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The simulation study assesses the impact of sewage discharges on the present and predicted water quality of the Mumbai coast using MIKE 21. Water quality parameters in terms of dissolved oxygen (DO), biochemical oxygen demand (BOD) and faecal coliform (FC) are checked against specified standards. The simulation is validated for the present coastal hydrodynamics and observed water quality parameters. The validated model is further used for predicting scenarios in terms of upgradation in a pumping station and improvement in wastewater collection, treatment level and disposal systems. The water quality of the existing coastal environment does not conform to the stipulated standards but improves considerably in the prediction scenarios. However, despite a marked improvement in FC, it is not as per desired standards as no treatment for bacteria removal is considered. The simulation study emphasizes the need for exploring options like the reuse or recycle of treated effluent, as an effort for water conservation.
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Air Quality Index - A Comparative Study for Assessing the Status of Air Quality (Engineering and Technology)
(Shivangi Nigam, B. Padma S. Rao, N. K. Mandal, N Kumar, and C. Chauhan,06,No. 02,, Year: 2016)
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Air quality Index is a tool for identify the present scenario of air quality. Six different methods of estimating Air quality Index (AQI) based on four pollutants synergistic effect viz., PM10, PM2.5, SO2 and NO2 were used to compare the prevailing ambient air quality in the study region. The average concentration of PM10, PM2.5, SO2 and NO2 are in 82.59, 61.61, 27.19 and 3.92 μg/m3 in was observed in May June respectively. Similarly the levels in June-July 2014 were observed as 57.96, 43.27, 14.24 and 2.54 μg/m3 respectively while the concentration in July-August 2014 were found as 39.37, 32.89, 10.44 and 2.92μg/m3 respectively, in August-September 2014 were 30.08, 32.53, 12.18 and 2.90 μg/m3 respectively and the levels in Sept-Oct 2014 were found as PM10, PM2.5, SO2 and NO2 are in 93.66, 94.04, 23.39 and 6.85 μg/m3 respectively. Seasonal and daily AQI calculation revealed that air quality status in the study region under various classes ranging from good, moderate, satisfactory and unacceptable class for different AQI calculation.
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Real time Ambient Air Quality Status During Diwali Festival in Central, India (Environment Science)
(Shivangi Nigam, B. Padma S. Rao, N. K. Mandal, N Kumar, and C. Chauhan, V.A. Maishlkar, P. N. Mishra,05,Issue 3/4,, Year: 2016)
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In India, festivals are celebrated with lot of enthusiasm and Diwali is the major festival of light. In this festival, houses are illuminated by lights and sky is illuminated by fireworks. These fireworks though create lot of amusement but also pollute the atmosphere in terms of air pollution. The continuous air pollution monitoring was undertaken during Diwali festival (2014) at residential site NEERI, Nagpur. Air quality parameters were compared with CPCB standard. On Diwali day, PM 10 and PM 2.5 concentration achieve its highest value of 900 µg/m 3 and 950 respectively µg/m 3. This high concentration is maintained in atmosphere for two days of this festival in atmosphere which is approximately 8-9 times more than that regulatory standard. These particles carry all the components of the cracker including heavy metals, alkali metals, alkaline earth and change the atmosphere with positive and negative ions apart from impaction of sulfur and other acid gases to the atmosphere.
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Air Quality Index - A Comparative Study for Assessing the Status of Air Quality (Engineering and Technology)
(Shivangi Nigam, B. Padma S. Rao, N. K. Mandal, N Kumar, and C. Chauhan,06,No. 02,, Year: 2016)
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Air quality Index is a tool for identify the present scenario of air quality. Six different methods of estimating Air quality Index (AQI) based on four pollutants synergistic effect viz., PM 10 , PM 2.5 , SO 2 and NO 2 were used to compare the prevailing ambient air quality in the study region. The average concentration of PM10, PM 2.5 , SO 2 and NO 2 are in 82.59, 61.61, 27.19 and 3.92 µg/m 3 in was observed in May June respectively. Similarly the levels in June-July 2014 were observed as 57.96, 43.27, 14.24 and 2.54 µg/m 3 respectively while the concentration in July-August 2014 were found as 39.37, 32.89, 10.44 and 2.92µg/m 3 respectively, in August-September 2014 were 30.08, 32.53, 12.18 and 2.90 µg/m 3 respectively and the levels in Sept-Oct 2014 were found as PM 10 , PM 2.5 , SO 2 and NO 2 are in 93.66, 94.04, 23.39 and 6.85 µg/m 3 respectively. Seasonal and daily AQI calculation revealed that air quality status in the study region under various classes ranging from good, moderate, satisfactory and unacceptable class for different AQI calculation
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Impact of Sewage Discharges on Coastal Water Quality Mumbai, India: Present and Future Scenarios. (Environmental Monitoring and Assessment)
(Ritesh Vijay, Trupti Mardikar , Rakesh Kumar,Vol. 188,,420, Year: 2016)
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The simulation study assesses the impact of sewage discharges on the present and predicted water quality of the Mumbai coast using MIKE 21. Water quality parameters in terms of dissolved oxygen (DO), biochemical oxygen demand (BOD) and faecal coliform (FC) are checked against specified standards. The simulation is validated for the present coastal hydrodynamics and observed water quality parameters. The validated model is further used for predicting scenarios in terms of upgradation in a pumping station and improvement in wastewater collection, treatment level and disposal systems. The water quality of the existing coastal environment does not conform to the stipulated standards but improves considerably in the prediction scenarios. However, despite a marked improvement in FC, it is not as per desired standards as no treatment for bacteria removal is considered. The simulation study emphasizes the need for exploring options like the reuse or recycle of treated effluent, as an effort for water conservation.
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Assessment of Tourism Impact on Land Use Land Cover and Natural Slope in Manali, India: A Geospatial Analysis (Environmental Earth Sciences)
(S. R. Wate, Vikash K. Kushwaha, Ardhendu S. Chaudhury, Kasturi Naik,Vol. 7520,,, Year: 2016)
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Demand for tourism has increased the pressure on hill stations and is becoming a major concern for change in land use/land cover in Manali, India. A geospatial approach has been applied in the present study to assess the impact of tourism on land use/land cover and natural slope. For this, satellite images of 1989, 2000, 2005 and 2012 were used for change detection and ASTER digital elevation model was used for slope analysis. Impact of tourism in the study area was assessed through change in built-up and its sprawl on various slope classes over the years. Built-upincreased from 4.7 to 15.7 % during 1989–2012 indicating fast growing development in the area. At the same time, exponential increase in number of tourists from 1.4 to 28 lakhs from 1980 to 2011, respectively, confirms excessive pressure of tourism in the study area. Even, the number of hotels has increased over the years. Built-up is observed in gentle slope to very steep slope and increasing year by year. Since the study area is prone to landslide and an increment in built-up especially in extreme, steep and very steep slope becomes a matter of grave concern. This study suggests immediate attention of city developers and planners to achieve the long-term viability of tourism industry through sustainable developments.
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Characterization of Polynuclear Aromatic Hydrocarbons in fugitive of PM10 emissions from an integrated iron and steel plant
(V. V. Khaparde, A. D. Bhanarkar, Deepanjan Majumdar, C. V. Chalapati Rao,562,,155-163, Year: 2016)
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Fugitive emissions of PM10 (particles <10μm in diameter) and associated polycyclic aromatic hydrocarbons (PAHs) were monitored in the vicinity of coking unit, sintering unit, blast furnace and steel manufacturing unit in an integrated iron and steel plant situated in India. Concentrations of PM10, PM10-bound total PAHs, benzo (a) pyrene, carcinogenic PAHs and combustion PAHs were found to be highest around the sintering unit. Concentrations of 3-ring and 4-ring PAHs were recorded to be highest in the coking unit whereas 5-and 6-ring PAHs were found to be highest in other units. The following indicatory PAHs were identified: indeno (1,2,3-cd) pyrene, dibenzo (a,h) anthracene, benzo (k) fluoranthene in blast furnace unit; indeno (1,2,3-cd) pyrene, dibenzo (a,h) anthracene, chrysene in sintering unit; Anthracene, fluoranthene, chrysene in coking unit and acenaphthene, fluoranthene, fluorene in steel making unit. Total-BaP-TEQ (Total BaP toxic equivalent quotient) and BaP-MEQ (Total BaP mutagenic equivalent quotient) concentration levels ranged from 2.4 to 231.7ng/m(3) and 1.9 to 175.8ng/m(3), respectively. BaP and DbA (dibenzo (a,h) anthracene) contribution to total-BaP-TEQ was found to be the highest
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Real time Ambient Air Quality Status During Diwali Festival in Central, India (Environment Science)
(Nigam, S; Rao, P.S.; Mandal, N. K.; Kumar, N; Chauhan, C; Maishlkar, V. A.; Mishra, P. N.,05,Issue 3/4,, Year: 2016)
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In India, festivals are celebrated with lot of enthusiasm and Diwali is the major festival of light. In this festival, houses are illuminated by lights and sky is illuminated by fireworks. These fireworks though create lot of amusement but also pollute the atmosphere in terms of air pollution. The continuous air pollution monitoring was undertaken during Diwali festival (2014) at residential site NEERI, Nagpur. Air quality parameters were compared with CPCB standard. On Diwali day, PM 10 and PM 2.5 concentration achieve its highest value of 900 µg/m 3 and 950 respectively µg/m 3. This high concentration is maintained in atmosphere for two days of this festival in atmosphere which is approximately 8-9 times more than that regulatory standard. These particles carry all the components of the cracker including heavy metals, alkali metals, alkaline earth and change the atmosphere with positive and negative ions apart from impaction of sulfur and other acid gases to the atmosphere
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Determining Heavy Metals Contamination in Road Dust in Delhi City, India (Atmosphere)
(B. S. Rajaram, P. V. Suryawanshi, C. V. Chalapati Rao
,29 ,Issue 3,221-234, Year: 2016)
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Road dust samples were collected from four different areas having different landuse patterns: industrial, heavy traffic, residential and mixed use in Delhi city of India. The samples were analyzed for Ba, Co, Cr, Cu Fe, Mn, Ni, Pb and Zn by ICP-AES. Results indicate high levels of Co, Cr, Cu, Mn and Ni in samples collected from industrial area. Ba, Pb and Zn showed higher concentration levels in heavy traffic area while Fe did not show any discernible variation between the localities. The concentrations of Fe, Mn, Ba, Zn, Cr, Cu, Pb, Ni and Co showed a decreasing trend. The content of heavy metals was comparable to those in other cities in the world. A multivariate statistical approach which includes Pearson's correlations and principal component analysis was used to identify the possible sources of metals in the road dust. Enrichment factors were estimated for further confirming the sources of contamination. Significant positively correlations between road dust metals Cu-Mn-Co-Cr-Ni suggest that major common source of origin is industrial activities. A meaningful correlation between Ba and Zn, and a moderate positive correlation between Pb and Ba indicate the influence of traffic activities. Enrichment factors calculation indicated that Pb, Cu, Cr and Zn are moderately enriched whereas Co, Ni and Mn are less enriched while Ba exhibited very low enrichment in the dust samples. The results indicate that industrial and vehicular traffic are the two major sources. Traffic appears to be responsible for the high levels of Zn, Cu and Ba. High concentration of Co, Cr, Cu and Mn may be due to industrial sources
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Disposition of Lightning Activity Due to Pollution Load during Dissimilar Seasons as observed from Satellite and Ground-Based Data (Climate)
(Anirban Middey and Pankaj B. Kaware
,4,,28, Year: 2016)
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The precise role of air pollution on the climate and local weather has been an issue for quite a long time. Among the diverse issues, the effects of air pollution on lightning are of recent interest. Exploration over several years (2004 to 2011) has been made over Gangetic West Bengal of India using lightning flash data from TRMM-LIS (Tropical Rainfall Measuring Mission-Lightning Imaging Sensor), atmospheric pollutants, and rainfall data during pre-monsoon (April and May) and monsoon (June, July, August and September) seasons. Near-surface pollutants such as PM10 and SO2 have a good positive association with aerosol optical depth (AOD) for both the pre-monsoon and monsoon months. High atmospheric aerosol loading correlates well with pre-monsoon and monsoon lightning flashes. However, rainfall has a dissimilar effect on lightning flashes. Flash count is positively associated with pre-monsoon rainfall (r = 0.64), but the reverse relation (r = −0.4) is observed for monsoon rainfall. Apart from meteorological factors, wet deposition of atmospheric pollutant may be considered a crucial factor for decreased lightning flash count in monsoon. The variation in the monthly average tropospheric column amount of NO2, from the Tropospheric Emission Monitoring Internet Service (TEMIS), is synchronic with average lightning flash rate. It has a good linear association with flash count for both pre-monsoon and monsoon seasons. The effect of lightning on tropospheric NO2 production is evident from the monthly average variation in NO2 on lightning and non-lightning days
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Evaluation of coarse and fine particles in diverse Indian environments (Environment. Sci.)
(K. V. George, Dinakar D. Patil, Mulukutla N. V. Anil, Neelkamal, Babu J. Alappat, Prashant Kumar,24(4) ,,3363-3374, Year: 2016)
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The estimates of airborne fine particle (PM2.5) concentrations are possible through rigorous empirical correlations based on the monitored PM10 data. However, such correlations change depending on the nature of sources in diverse ambient environments and, therefore, have to be environment specific. Studies presenting such correlations are limited but needed, especially for those areas, where PM2.5 is not routinely monitored. Moreover, there are a number of studies focusing on urban environments but very limited for coal mines and coastal areas. The aim of this study is to comprehensively analyze the concentrations of both PM10 and PM2.5 and develop empirical correlations between them. Data from 26 different sites spread over three distinct environments, which are a relatively clean coastal area, two coal mining areas, and a highly urbanized area in Delhi were used for the study. Distributions of PM in the 0.43–10-μm size range were measured using eight-stage cascade impactors. Regression analysis was used to estimate the percentage of PM2.5 in PM10 across distinct environments for source identification. Relatively low percentage of PM2.5 concentrations (21, 28, and 32%) in PM10 were found in clean coastal and two mining areas, respectively. Percentage of PM2.5 concentrations in PM10 in the highly urbanized area of Delhi was 51%, indicating a presence of a much higher percentage of fine particles due to vehicular combustion in Delhi. The findings of this work are important in estimating concentrations of much harmful fine particles from coarse particles across distinct environments. The results are also useful in source identification of particulates as differences in the percentage of PM2.5 concentrations in PM10 can be attributed to characteristics of sources in the diverse ambient environments
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