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“Ozone Induced Biodegradability Enhancement and Colour Reduction of a Complex Pharmaceutical Effluent” (The journal of Ozone: Science & Engineering )
(,,,,Year : 2015)
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The treatment of a complex pharmaceutical effluent using a combination of ozonation and biological treatment is reported with the use of ozonation as a pre- and posttreatment. Pretreatment facilitated biodegradability index (BI = BOD/COD) enhancement of up to 0.44 along with COD and color reduction of up to 42% and 33%, respectively. Subsequent anaerobic biodegradation of effluent indicated negligible biogas generation; however, aerobic biodegradation of pretreated effluent resulted in COD reduction (73%) and color reduction (62%), which was also indicated by the biokinetic parameters. Further, ozonation as a posttreatment led to higher overall COD (87%) and color (93%) removal.
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Anaerobic stabilization and conversion of transformed intermediates of pharmaceutical effluent in a fluidized bed reactor(Journal of Environmental Science and Engineering (JESE))
( R. Saravanane, R. Rajesh and R. Sivacoumar,Vol.53 (3),, p. 23-236,Year : 2016)
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No information is available
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An Insight into Diversity at Environmental Habitats using Comparative Metagenomics Approach(Current Microbiology)
(Parmar, K.;
Dafale, N.;
Pal, R.;
Tikariha, H,75(2),,132- 141,Year : 2016)
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No information is available
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Inhibitory effects of acidic pH and Confounding effects of moisture content on methane biofiltration(Bioresource Technology)
(Barzgar, S., Hettiaratchi, J.P.A., Pearse, L., &Kumar, S.,245, ,,633-640,Year : 2017)
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This study focussed on evaluating the effect of hydrogen sulfide (H2S) on biological oxidation of waste methane (CH4) gas in compost biofilters, Batch experiments were conducted to determine the dependency of maximum methane oxidation rate (Vmax) on two main factors; pH and moisture content, as well as their interaction effects. The maximum Vmax was observed at a pH of 7.2 with decreasing Vmax values observed with decreasing pH, irrespective of moisture content. Flow-through columns operated at a pH of 4.5 oxidized CH4 at a flux rate of 53 g/m2/d compared to 146 g/m2/d in columns operated at neutral pH. No oxidation activity was observed for columns operated at pH 2.5, and DNA sequencing analysis of samples led to the conclusion that highly acidic conditions were responsible for inhibiting the ability of methanotrophs to oxidize CH4. Biofilter columns operated at pH 2.5 contained only 2% methanotrophs (type I) out of the total microbial population, compared to 55% in columns operated at pH 7.5. Overall, changes in the population of methanotrophs with acidification within the biofilters compromised its capacity to oxidize CH4 which demonstrated that a compost biofilter could not operate efficiently in the presence of high levels of H2S.
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Prevalence of formaldehyde in indoor air of gross anatomy laboratory and cadaver storage room of a medical college(Journal of Environmental and Occupational Science)
(Shailesh Gahukar, Ujwala Ramteke, Deepanjan Majumdar,
Raman Malviya, Dinkar Patil, Jitendra Trivedi, Chalapati Rao,
Ashok H. Kale,,,181-185,Year : 2014)
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Concentration of formaldehyde (FA) which is used to preserve cadavers for dissection in medical colleges was monitored in indoor air including at the breathing level in dissection classes during a 2-week study in a gross anatomy laboratory and also in the cadaver storage room in a Medical College in India in 2012. Materials and Air samples were collected for 30 min and 3 h to commensurate with World Health Organization (WHO) standard (short-term exposure limit) value of FA (30-min) and dissection class of 3 h duration respectively. FA concentration ranged from 0.11 to 1.07 mg/m3 in the cadaver storage room and 0.06-1.12 mg/m3 in the gross anatomy laboratory. In samples taken at 5 ft height at the breathing level, FA concentration ranged from 0.32 to 0.86 mg/m3. Conclusions: Most of the observed FA levels were found to be above the prescribed FA guideline values laid down by organizations such as OSHA, ACGIH, WHO, Japan Ministry of Health, Labor, and Welfare and, therefore, could be considered as harmful for students’ and teachers’ health. FA concentrations reported from a few medical facilities in other countries are comparable, implying that some uniform management and control strategies for FA could be contemplated to reduce risks of FA exposure to students and teachers which are discussed in this paper
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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)
(Ritesh Vijay, V. K Kushwah, A. S. Chaudhary, Kasturi Naik, I. Gupta, Rakesh Kumar, S. R. Wate,75(20),,,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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Removal of m-phenylenediamine by adsorption onto activated carbon: Kinetics, equilibrium and process design(Desalination and Water Treatment)
(Patel, M. Rathod, K. H. Mody,57 (9),,4205-4219,Year : 2016)
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The adsorption behavior of m-phenylene diamine (m-PDA) from aqueous solution onto activated carbon was investigated under various experimental conditions, such as contact time, adsorbate concentration, and temperature. Maximum adsorption capacity for m-PDA was found to be 33.17 mg?g?1 at pH 7.0 and temperature 303 K. The adsorption kinetics data were best described by the pseudo-second-order rate equation and the equilibrium was achieved after 120 min. The m-PDA adsorption was governed by film diffusion process. Besides, equilibrium data were very well represented by the Redlich–Peterson model. A model for prediction of the dose of adsorbent required to achieve a range of m-PDA removals for a given number of adsorption–desorption cycles has been developed and validated based on the Langmuir isotherm. Thermodynamic parameters indicated the spontaneous, endothermic, and increased random nature of m-PDA adsorption. The amide, carboxylic acid, and nitro groups of the activated carbon were involved in chemical interaction with the m-PDA molecules. Results suggested that the activated carbon has good potential for remediation of m-PDA contaminated waters.
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Catalytic preferential oxidation of carbon monoxide over platinum supported on lanthanum ferrite, ceria catalysts for cleaning of hydrogen(Journal of Power Sources )
(PV Gosavi, RB Biniwale,222, ,,1-9,Year : 2013)
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No information is available
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Integrated hydro chemical and geophysical studies for assessment of groundwater pollution in basaltic settings in central India(Int. Journal of Environmental Monitoring and Assessment)
( Paras R. Pujari, C.Padmakar, L.SuriNaidu, V.U.Vaijnath, Bhusan Kachawe, V.V.S.Gurunatha.Rao and P.K.Labhasetwar ,,,,Year : 2011)
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No information is available
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Study of local and Regional influence of PM2.5 Concentration during Odd-even Rule in Delhi using Causual Analysis(Aerosol & Air Quality Research)
(A. B. Chelani
,175,,1190-1203,Year : 2017)
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PM2.5 concentration observed during odd-even rule in Delhi is analysed for assessing its effectiveness in curbing the levels. The local and regional influence is analysed by using similarity and causality analysis. Causality analysis is usually carried out by using nonlinear dynamical technique which predicts one variable using another. In this study a simple approach is presented based on nearest neighbour method. It is observed that PM2.5 in Delhi has regional influence in addition to local sources. Although the effectiveness of odd-even rule is not observed in curbing the PM2.5 levels, it is suggested that extended implementation of the rule may provide more insight to the impact. Similarity analysis suggested that PM2.5 concentrations in Delhi have somewhat similar temporal behaviour with neighbouring locations in the southeast (SE) and west (W)-southwest (SW) sector. The control policies in Delhi need to be adopted keeping in mind the local and regional influences on PM2.5 levels in the area
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Sensitivity of PBL Parameterization schemes of Weather Research Forecasting Model and coupling with AERMOD in the dispersion of NOX over Visakhapatnam (India)(Asia-Pacific Journal of Chemical Engineering)
(R.Boadh, A NAV Satyanarayana, S. Madala,,,356-368,Year : 2015)
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An attempt has been made to develop a pre?processor coupler for offline coupling of atmospheric mesoscale model (WRF) with a dispersion model (AERMOD) to estimate the ground level concentrations due to industrial sources over a coastal city, Visakhapatnam, India. To integrate AERMOD in standalone mode, surface and upper meteorological observations and various planetary boundary layer (PBL) parameters with good temporal resolution are required, that are absent for most locations in India. We have developed an integrated WRF?AERMOD modeling system that gets required PBL parameters the pre?processor coupler. Using this model, evaluation of the dispersion of nitrogen oxides (NOX) over Visakhapatnam during summer month with emission inventory of elevated point sources of various industries is conducted. Sensitivity studies of PBL schemes of WRF after validation reveal that the non?local schemes, Yonsei University (YSU) followed by Asymmetric Convective Model version 2 (ACM2), captured well the characteristic variations of surface meteorological variables, vertical atmospheric structure. After validating with monitored air quality data, it is found that the integrated model with YSU followed by ACM2 is good in simulating ground level concentrations of NOX. The present work advocates that the developed modeling system is useful for better assessment of pollution dispersion over coastal regions. © 2015 Curtin University of Technology and John Wiley & Sons, Ltd.
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Degradation of di through hepta chlorobiphenyl in clophen oil using microorganisms isolated from long term PCB contaminated soil (Indian Journal of Microbiology)
(,,,,Year : 2014)
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Present work describes microbial degradation of selected polychlorinated biphenyls (PCBs) congeners in Clophen oil which is used as transformer oil and contains high concentration of PCBs. Indigenous PCBs degrading bacteria were isolated from Clophen oil contaminated soil using enrichment culture technique. A 15 days study was carried out to assess the biodegradation potential of two bacterial cultures and their consortium for Clophen oil with a final PCBs concentration of 100 mg kg?1. The degradation capability of the individual bacterium and the consortium towards the varying range of PCBs congeners (di- through hepta-chlorobiphenyls) was determined using GCMS. Also, dehydrogenase enzyme was estimated to assess the microbial activity. Maximum degradation was observed in treatment containing consortium that resulted in up to 97 % degradation of PCB-44 which is a tetra chlorinated biphenyl whereas, hexa chlorinated biphenyl congener (PCB-153) was degraded up to 90 % by the consortium. This indicates that the degradation capability of microbial consortium was significantly higher than that of individual cultures. Furthermore, the results suggest that for degradation of lower as well as higher chlorinated PCB congeners; a microbial consortium is required rather than individual cultures
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Jayabalou. Design, Development and Economic Evaluation of Small and Decentralized Wastewater Treatment System(Journal of Aquatic Biology and Fisheries )
( K. Latha and R,Vol. 2; ,, p. 779 – 791,Year : 2016)
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No information is available
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Computational fluid dynamics (CFD) analysis of airlif bioreactor : effect of draft tube configuration on hydrodynamics, cell suspension, and shear rate(Bioprocess and Biosystems Engineering)
(Pawar, S. B.
,41(1),,31-45,Year : 2016)
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No information is available
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Elevated levels of urinary 17-ketosteroids in central Indian children residing near sewage treatment plant and solid waste disposal plant: A preliminary study, Human and Ecological Risk Assessment(Human and Ecological Risk Assessment)
(Preeti Shrivastava, Priyanka A. Mulay, Pravin K. Naoghare, Preeti Meshram, Mohammad Farooqui, Amit Bafana, Patrizio Arrigo, G. S. Kanade, Saravanadevi Sivanesan, Kannan Krishnamurthi & Tapan Chakrabarti,23 (2),, 241-256,Year : 2017)
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Urinary excretion of 17-ketosteroid (17-KS) was assessed in male pre-pubertal subjects aged (8–11 years; n = 90). Children living near sewage treatment plant and solid waste disposal plant (Group P) showed significantly higher levels of urinary 17-KS (Group P: 3.27 ± 1.63 µg/mL/CRE; p < 0.01) than children living in cleaner area (0.50 ± 0.53 µg/mL/CRE; Group C). Occurrence of urinary dibutyl phthalate in representative subjects of Group P (odds ratio: 9; p < 0.05; 95% of Confidence interval (CI) 1.93–72.99) was higher compared to Group C. Urinary concentrations of Cd (0.85 µg/g CRE ± 0.11), Mn (24.25 µg/g CRE ± 6.11) and Pb (12.39 µg/g CRE ± 2.86) in Group P were significantly (p < 0.01) higher than those found in Group C (Cd (0.28 µg/g CRE ± 0.03), Mn (13.33 µg/g CRE ± 3.20) and Pb (5.67 µg/g CRE ± 0.53)). Analyses of ambient air samples (PM10) in polluted area revealed major occurrence of phthalates, whereas derivatives of trifluoromethyl, dione, etc. were identified in PM2.5 fraction. Metal (Cd, Co, Mn and Pb) concentrations in ambient air (24 h, PM10) were higher in polluted area compared to cleaner area. We conclude that elevated levels of urinary 17-KS in Group P could be attributed to higher exposure of these subjects to Endocrine disrupting chemicals (EDCs) compared to Group C.
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In-vessel composting: a rapid technology for conversion of bio-waste into compost. (International Journal of Science and Engineering)
(Manyapu, V., Shukla, S., Kumar, S., &Rajendra, K.,2, ,,58-63,Year : 2017)
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Composting always proved to be the Nature-friendly and sustainable method for getting rid of the huge burden of biowaste. As we witness, there is an intractable growth of human population and their unlimited consumption of different goods produce a tremendous amount of waste. In New Delhi itself, more than 9500 tons of waste is generated every day, out of which 8000 tons per day goes to the landfilling, which is the most commonly practiced method. This malignant process instead of solving the problem of waste, in turn, causes more problems like methane emission, heavy metal leaching into groundwater, soil pollution, etc. Composting mimics natural mineralization process which is the alternative solution of resource recovery with no side-effects. To curb such a huge amount of waste, the composting process must be rapidified and achieved by in-vessel composting, where the partial anaerobic condition is reduced by enforced aeration and critical parameters like moisture and temperature can be controlled. Aerobic bacteria are the main agents which speed up the composting process. Moreover, easily available natural additives like buttermilk, jaggery, sugar, etc. also speed up the microbial process and increase the efficiency. So, the in-vessel composting provides efficient compost in a very short time period. This paper will provide a critical assessment of In-vessel composting in terms of process parameters and efficiency in comparison with conventional methods. This process can be critically utilized for community-based composting at small scale compost production, which will be a key to link daily household waste with resource generation with the aim to achieve Swach Bharat Mission.
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Distribution of ozone over urban Kolkata: observed vs UAM-V prediction(Journal of Ozone Science and Engineering)
(A. Talapatra, D. Majumdar and Anjali Srivastava,36(2),,181-190,Year : 2014)
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Vehicular pollution, emissions due to burning of fossil fuel from industries and nonpoint sources in Kolkata are major sources of air pollution characterized by oxides of Nitrogen (NOx) and volatile organic compounds (VOCs). These pollutants are also responsible for the secondary ozone formation based on their reactivities. In the present study ozone has been monitored hourly every month in residential, industrial, traffic intersections, and petrol pumps in the urban area of Kolkata along with eight hourly nonoxygenated VOCs,carbonyls and NOx. Urban Airshed Model (UAM-V) has been used to simulate ozone on January 14, 2008 in Kolkata’s urban Area. Results of predicted ground level ozone have been in agreement with observed ozone concentrations.
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Rapid Granulation and Start-up of a Hybrid Anoxic Reactor for Biological Denitrification(Chemical Engineering Technology)
(Bhuvanesh, S., Sreekrishnan, T.R.,,,,Year : 2016)
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Rapid granulation of biomass and reactor start-up has been studied in a novel denitrifying reactor. The effect of wastewater characteristics, reactor operating conditions and reactor geometry on microbial granulation has been studied. It was possible to achieve granulation in just 15 days of reactor start-up. In 15 days the settling velocity of the granules was 1.5 cm s-1, which is almost 10 folds higher than that of seed sludge. The reactor was able to handle a nitrate loading rate of 50 g NO3-N m-3 day-1 in 3 days of reactor start-up with rates reaching up to 460 g NO3-N m-3 day-1 in just 30 days of reactor start-up with a removal efficiency of almost 100%. Based on the experimental observation, a hypothesis for the cause of rapid granulation has been proposed.
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Development of GIS based Noise Simulation Software (DGNSS)(International Journal of Scientific and Engineering Research )
(A Sharma, R Vijay, RA Sohony,4 (12),,, 177-182,Year : 2013)
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The objective of the study is to develop GIS based noise simulation software for heterogeneous traffic conditions in metropolitan cities. In the present study traffic noise simulation software has been developed for sound level calculation. The software covers the following five input variables i.e., noise sources (point and mobile), vehicle speed, distance, honking and noise attenuation while noise Leq is the output of the software. The software is implemented for traffic noise level prediction at eight selected locations of Nagpur city. The field data is collected for a period of 15-minutes during the morning and evening rush hours. The correlation coefficient between measured and predicted noise Leq found to be 0.84. Results s
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Assessment of the impact of on-site sanitation systems on groundwater pollution in two diverse geological settings(Int. Journal of Environmental Monitoring and Assessment)
(Paras R.Pujari, C.Padmakar, Pawan K. Labhasetwar, Piyush Mahore. A.K.Ganguly,,,,Year : 2011)
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No information is available
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