|
Toxic effect of Ore Mining on Soil and Water Quality at Chhattisgarh(International journal of Research in biosciences, agriculture & Technology)
(,,,,Year : 2018)
|
|
No information is available
|
|
|
Evaluation of practical framework for Industrial noise mapping: A case study(Journal Noise and Health )
(Satish. K. Lokhande, Rakesh Gautam, Satyajeet A. Dhawale, Mohindra C. Jain,,,,Year : 2017)
|
|
No information is available
|
|
|
Realizing Modeling and Mapping Tools to Study the Upsurge of Traffic Noise Pollution as a Result of Open-cast Mining and Transportation Activities(Journal Noise and Health )
(Mohindra C. Jain, Satyajeet A. Dhawale, Rakesh Gautam,20,,60-67,Year : 2017)
|
|
Introduction: In open-cast mines, noise pollution has become a serious concern due to the extreme use of heavy earth moving machinery (HEMM). Materials and Methods: This study is focused to measure and assess the effects of the existing noise levels of major operational mines in the Keonjhar, Sundergadh, and Mayurbhanj districts of Odisha, India. The transportation noise levels were also considered in this study, which was predicted using the modified Federal Highway Administration (FHWA) model. Result and Discussion: It was observed that noise induced by HEMM such as rock breakers, jackhammers, dumpers, and excavators, blasting noise in the mining terrain, as well as associated transportation noise became a major source of annoyance to the habitants living in proximity to the mines. The noise produced by mechanized mining operations was observed between 74.3 and 115.2 dB(A), and its impact on residential areas was observed between 49.4 and 58.9 dB(A). In addition, the noise contour maps of sound level dispersion were demonstrated with the utilization of advanced noise prediction software tools for better understanding. Conclusion: Finally, the predicted values at residential zone and traffic noise are correlated with observed values, and the coefficient of determination, R2, was calculated to be 0.6891 and 0.5967, respectively.
|
|
|
Assessment of heterogeneous road traffic noise in Nagpur(Journal of Archives of Acoustics )
(Samir S pathak, Piyush K Kokate,,,,Year : 2017)
|
|
"he objective of the study is to assess the noise scenario and evaluate prediction model for heterogeneous traffic conditions. In the past few years, road traffic of Nagpur has increased significantly due to the rapid increase in the number of vehicles. Noise levels are monitored at six different squares, characterized as interrupted traffic flow due to traffic signals, high population density and heavy traffic where the major sources of noise are engines, exhausts, tires interacting with the road, horns, sound of gear boxes, breaks, etc. The A-weighted time-average sound levels (LAeq;T) are measured at the different time of day during peak and off-peak traffic hours. To assess the traffic noise more precisely, the noise descriptors such as L10, L50, L90, LAeq;T, TNI (Traffic Noise Index), NPL (Noise Pollution Level) and NC (Noise Climate) are used. In the present study, the Federal Highway Administration (FHWA) noise prediction model is used for prediction of noise levels and it is observed that one-hour duration measured LAeq;T ranged from 71 to 76 dB(A) and 71.6 to 76.3 dB(A) during peak and off peak hours respectively. Due to the heavy traffic the peak hour Sound Exposure Levels (LAE) at all locations are exceeding permissible limit of 70 dB(A) prescribed by the World Health Organization (W.H.O). Off-peak traffic hour noise levels are within permissible limit except at two locations, Jagnade and HB town square. Significant correlation was obtained when best fit lines generated between measured and predicted values gives R2 of 0.455 for all time intervals. Chi-Square test (?2) was also computed to investigate the noise levels at different squares. The results show that the inhabitants of Nagpur city are exposed to high transportation noise
during daytime."
|
|
|
Appraisal of Noise Level Dissemination Surrounding Mining and Industrial Areas of Keonjhar, Odisha:(Journal of Archives of Acoustics )
(Satyajeet A. Dhawale,Samir S. Pathak, Rakesh Gautam, Mohindra C. Jain,,,,Year : 2017)
|
|
Noise mapping is a well-established practice among the European nations, and it has been follow for almost two decades. Recently, as per guidelines of the Directorate General of Mines Safety (DGMS), India, noise mapping has been made mandatory in the mining expanses. This study is an effort to map the noise levels in nearby areas of mines in the northern Keonjhar district. The motive of this study is to quantify the existing A-weighted time-average sound level (LAeq, T) in the study area to probe its effects on the human dwellings and noise sensitive areas with the probability of future development of the mines, roads, and industrial and commercial zone. The LAeq, T was measured at 39 identified locations, including industrial, commercial, residential, and sensitive zones, 15 open cast mines, 3 major highways, and 3 haulage roads. With the utilisation of Predictor LimA Software and other GIS tools, the worked out data is mapped and noise contours are developed for the visualisation and identification of the extent and distribution of sound levels across the study area. This investigation discloses that the present noise level at 60% of the locations in silence and residential zone exposed to significantly high noise levels surpasses the prescribed limit of Central Pollution Control Board (CPCB), India. The observed day and night time LAeq, T level of both zones ranged between 43.2–62.2 dB(A) and 30.5–53.4 dB(A), respectively, whereas, the average Ldn values vary between 32.7 and 51.2 dB(A). The extensive mobility of heavy vehicles adjoining the sensitive areas and a nearby plethora of open cast mines is the leading cause of exceeded noise levels. The study divulges that the delicate establishments like schools and hospitals are susceptible to high noise levels throughout the day and night. A correlation between observed and software predicted values gives R2 of 0.605 for Ld, 0.217 for Ln, and 0.524 for Ldn. Finally, the mitigation measure is proposed and demonstrated using a contour map showing a significant reduction in the noise levels by 0–5.3 dB(A).
|
|
|
Cadmium Removal from Aqueous Solutions Using Dried Banana Peels as an Adsorbent: Kinetics and Equilibrium Modeling(Journal “Bioremediation & Biodegradation)
(Prashant D Deshmukh, Vilas M Shinde and Pawankumar Labhasetwar,,,,Year : 2017)
|
|
No information is available
|
|
|
Application of cell-based assays for toxicity characterization of complex wastewater matrices: Possible applications in wastewater recycle and reuse. (Ecotoxicol Environ Saf. )
(Shrivastava P, Naoghare PK, Gandhi D, Devi SS, Krishnamurthi K, Bafana A, Kashyap SM, Chakrabarti T.,,,,Year : 2017)
|
Exposure to pre-concentrated inlet or outlet STP wastewater extracts at different concentrations (0.001% to 1%) induced dose-dependent toxicity in MCF-7 cells, whereas drinking water extracts did not induce cytotoxicity in cells treated. GC-MS analysis revealed the occurrence of xenobiotic compounds (Benzene, Phthalate, etc.) in inlet/outlet wastewater extracts. Cells exposed to inlet/outlet extract showed elevated levels of reactive oxygen species (ROS: inlet: 186.58%, p<0.05, outlet, 147.8%, p<0.01) and loss of mitochondrial membrane potential (Δψm: inlet, 74.91%, p<0.01; outlet, 86.70%, p<0.05) compared to the control. These concentrations induced DNA damage (Tail length: inlet: 34.4%, p<0.05, outlet, 26.7%, p<0.05) in treated cells compared to the control (Tail length: 7.5%). Cell cycle analysis displayed drastic reduction in the G1 phase in treated cells (inlet, G1:45.0%; outlet, G1:58.3%) compared to the control (G1:67.3%). Treated cells showed 45.18% and 28.0% apoptosis compared to the control (1.2%). Drinking water extracts did not show any significant alterations with respect to ROS, Δψm, DNA damage, cell cycle and apoptosis compared to the control. Genes involved in cell cycle and apoptosis were found to be differentially expressed in cells exposed to inlet/outlet extracts. Herein, we propose cell-based toxicity assays to evaluate the efficacies of wastewater treatment and recycling processes.
|
|
|
Emerging contaminants in an Indian STP-A major issue of concern
(,,,,Year : 2016)
|
|
No information is available
|
|
|
Packaged drinking water in India: How safe is it?"(Journal of Environmental Monitoring and Assessment)
(,,,,Year : 2016)
|
|
No information is available
|
|
|
Evaluation of the effect of size reduction and thermal treatment on metal extraction from PCBs of mother board and digital video drive of desktop PCs(Current Science)
(V. M. Shinde
,,,,Year : 2016)
|
|
The study aims at evaluating the effect of particle size and thermal treatment on printed circuit boards (PCBs) of Mother Board (MB) and DVD on metal extraction. Results show around 90-95% (w/w) and 35-40% (w/w) of total Al and Cu respectively, in CPU could be recovered by systematized disassembly. Re-maining embedded Al and Cu require metallurgical or hydro-metallurgical processing. Cu extraction in-creases with size reduction. Thermal treatment of MB-PCB shows reduction in Cu extraction (23-38%) for all sizes in comparison without thermal treatment, while DVD-PCB showed surge in extraction after thermal treatment (41-141%) in comparison without thermal treatment.
|
|
|
Stress enhances polyunsaturation rich lipid accumulation in Chlorella sp and Chlamydomonas
(,,,,Year : 2016)
|
|
In the present study, effects of various cultivation conditions on biomass and lipid productivity, detail FAME signature, CO2 biofixation and elemental composition of Chlorella sp. and Chlamydomonas sp. have been investigated. In Chlorella sp., N-depletion has enhanced the lipid productivity by 12.70–14.61%. In Chlamydomonas sp., though the lipid content has increased by 22–26% upon N-depletion, lipid productivity has not changed significantly due to concomitant decrease in biomass productivity by 18–25%. The presence of lipid was also confirmed by FTIR spectroscopic analysis of biomass. The characteristic bands observed at 1744.30 cm?1 (Chlamydomonas sp.) and (Chlorella sp.) were credited to lipids due to C–O mode of the side chain from ester carbonyl group. Extracted lipid was transesterified to FAMEs. Chlorella sp. at N-replete indoor condition has produced the highest weight percentage of C16:0 (26.64%), C18:0 (3.77%) and C18:1 (27.94%). In Chlamydomonas sp., N-replete indoor condition has resulted in maximum content of MUFA (30.12%), LUFA (53.35%), second highest SFA (29.22%) and DUFA (23.23%). Inverse relationship was observed between MUFA and PUFA at all cultivation conditions. In both the microalgae, C16:0, C18:1 (9), C18:2 (9, 12), C18:3 (9, 12, 15) were identified as the major FAMEs which are suitable to be used as biodiesel components
|
|
|
Need for reducing groundwater contamination through improved on-site sanitation facilities and framework(Journal of the Indian Chemical Society)
(N. Thacker
,,,,Year : 2016)
|
|
No information is available
|
|
|
Enhanced arsenic removal from drinking water by iron-enriched aluminosilicate adsorbent prepared from fly ash(Journal of Desalination and Water Treatment)
(,,,,Year : 2016)
|
"The study deals with an efficient approach for the utilization of fly ash and mitigating one of the most severe drinking water problems caused due to arsenate. Iron enriched alumi- nosilicate adsorbent (IEASA) was synthesized using a novel method of alkali fusion of fly ash followed by ageing and hydrothermal curing. The raw material, intermediates, and final products were thoroughly characterized using powder X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and particle size analysis. The charac- terization results suggested that the prepared adsorbent is highly crystalline with particle size of 500 nm. The IEASA was evaluated as an adsorbent for the removal of arsenate at initial concentration of 1 mg L, 1 by batch adsorption studies, which shows excellent removal efficiency for arsenate (above 99%) in wide pH range of 4–10 and in the presence of various interfering ions. The efficiency was also compared with synthetic zeolite, which shows negligible arsenate removal. Adsorption isotherms were plotted using the Langmuir and Freundlich models to compute the adsorption capacities. The adsorption capacity obtained from Langmuir isotherm was 0.592 mg g 1as compared to the adsorption capacity of 0.455 mg g 1calculated from kinetics data. Detailed kinetics studies were also carried which confirms that the adsorption kinetics follows pseudo-second-order and particle diffu- sion is the rate determining step. Water quality was evaluated before and after adsorption, which suggests the suitability of the adsorbent for the decontamination of arsenate from drinking water and other parameters also confirms that treated water is potable."
|
|
|
An adaptive neuro-fuzzy interface system model for traffic classification and noise predictions(International Journal of Computer Applications (0975 – 8887))
(L G Malik ,,,,Year : 2016)
|
In present study, two adaptive neuro-fuzzy models have been developed for traffic classification and noise prediction, respectively. The traffic classification model (ANFIS-TC) classifies extracted sound features of different categories of vehicles based on their acoustic signatures. The model also compute total number of vehicles passes through a particular sampling point. The results have been used for the estimation of the equivalent traffic flow (QE). The noise prediction model (ANFIS-TNP) has three inputs, namely equivalent traffic flow (QE), equivalent vehicle speed (SE) and honking. The equivalent traffic flow (QE) is the output of ANFIS-TC model, while equivalent vehicle speed (SE) and honking are computed from observed averaged speed of different categories of vehicles and number of recorded horns blow per minute. The model assumes that the distance between sound level meter and road centerline is fixed for particular sampling point. The performance of both the models has been validated by field observations. The results show that traffic classification is 100% accurate, while correlation coefficients between observed and predicted traffic noise range from 0.75 to 0.96. Both the models are validated with random samples of data, and it is observed that both the models are generalized and could be employed for traffic classification and traffic noise prediction in small urban heterogeneous traffic environment for noise pollution assessment and control.
|
|
|
Biomethanation of vegetable market waste in an anaerobic baffled reactor: Effect of effluent recirculation and carbon mass balance analysis(Journal of Bio-resource Technology)
(,,,,Year : 2016)
|
|
No information is available
|
|
|
Development of adaptive and customizable Base Station System in Wireless Sensor Network(International Journal of Applied Engineering Research)
(,,,,Year : 2016)
|
|
This paper presents a development of dynamic base station for Wireless sensor network application, which highly capable to adapt itself for any other application in WSN. The proposed base station system has more memory, higher processing and communication capabilities. This system is able to query sensor data, process them, store them and deliver that data to user's cell phone, instantly. The base station system is built around ARM11 architecture microcontroller with Windows Embedded CE 6.0, so that it could possess good processing power, reliability, user friendly GUI and security. For communication purpose, IEEE802.15.4 based ZigBee RF module and GSM modem are used. The data received by base station is processed and stored in memory. The application of Base station is dynamic and customizable. User can change it easily as per the experimental or research requirements
|
|
|
Extremely Low Frequency Electromagnetic Field (ELF-EMF) and childhood leukemia near transmission lines: A review(Journal of Advanced Electromagnetics)
(A. K. Mishra,,,,Year : 2016)
|
|
No information is available
|
|
|
Advanced oxidation processes for the treatment of chlorpyrifos, dimethoate and phorate in aqueous solution(Journal of Water Reuse and Desalination)
(Kavita Gandhi, Summaiya Lari, Dhananjay Tripathi and Gajanan Kanade,6 1 ,,195-203,Year : 2016)
|
Photo-chemical-transformations of organophosphate pesticides, chlorpyrifos, dimethoate and phorate, using advanced oxidation processes (AOPs) namely UV photolysis, UV/H2O2, UV/Fenton and Fenton systems in aqueous solution were investigated in this work. A laboratory set-up was designed to evaluate and select the optimal oxidation process. Results show that addition of hydrogen peroxide/Fenton's reagent increased the UV degradation rates of all pesticides, and data were simulated through kinetic modeling. Kinetic results evidence pseudo first-order degradation, with the rate constant of reaction as 3.3 × 10-4, 2.07 × 10-2 and 1.88 × 10-2 for chlorpyrifos, dimethoate and phorate, respectively. Furthermore treatment efficiencies obtained for the studied AOPs indicate that UV/Fenton was most efficient for chlorpyrifos (50.3% degradation) and UV/H2O2 for dimethoate (96.9%) and phorate (89.6%). Finally, the identification of degradation products indicated that the UV/H2O2 technique results in the formation of fewer end products, with low toxicity. However, UV irradiation of phorate results in information of more toxic degradation end products such as phorateoxonsulfone.
|
|
|
Microbe assisted phytoremediation of oil sludge and role of amendments (International Journal of Environmental Sciences & Technology)
(,,,,Year : 2015)
|
A mesocosm study was evaluated to elucidate the influence of amendments such as microbial consortium, plant (Vetiveria zizanioides), bulking agent (wheat husk) and nutrients on remediation of oil sludge over a period of 90 days. The experiment was conducted in a 15 m2 plot which was divided into eight units comprising of soil sludge mixture (1:1) at CSIR-NEERI premises. During the experiment, oil degradation was estimated gravimetrically and polyaromatic hydrocarbons (PAHs) were quantified on GC–MS. Additionally, dehydrogenase activity was also monitored. The treatment integrated with bulking agent, nutrients, consortium and plant resulted in 28-fold increased dehydrogenase activity and complete mineralization of higher PAHs. Furthermore, 72.8 % total petroleum hydrocarbons (TPH) degradation was observed in bulked treatment with plant, nutrients and consortium followed by 69.6 and 65.4 % in bioaugmented treatments with and without nutrients, respectively, as compared to control (33.4 %). A lysimeter study was also conducted simultaneously using Vetiver and consortium to monitor groundwater contamination by heavy metals in oil sludge which showed a marked decrease in the concentrations of metals such as lead and cadmium in leachates. This study validates a holistic approach for remediation of oil sludge contaminated soils/sites which is a burning issue since decades by the use of microbe assisted phytoremediation technology which not only solves the problem of oil contamination but also takes care of heavy metal contamination.
|
|
|
Dynamics of effluent treatment plant during commissioning of activated sludge process unit"(Environmental Science and Pollution Research)
(,,,,Year : 2015)
|
|
No information is available
|
