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991.
Bali Kunal Mishra Amit Kumar Singh Sachchidanand Chandra Subhash Lehahn Yoav 《Environmental science and pollution research international》2019,26(12):11940-11950
Environmental Science and Pollution Research - Dust storms affect the primary productivity of the ocean by providing necessary micronutrients to the surface layer. One such dust storm during March... 相似文献
992.
Singh KP Singh AK Singh UV Verma P 《Environmental science and pollution research international》2012,19(3):724-738
Purpose
The present research aims to optimize the removal of ibuprofen (IBP), a non-steroidal anti-inflammatory, analgesic, and antipyretic drug from the aqueous solution using a synthesized magnetic carbon–iron nanocomposite, and to investigate the individual and combined effects of the independent process variables. 相似文献993.
Nirankar Singh Ravinder Agarwal Amit Awasthi Prabhat K. Gupta Susheel K. Mittal 《Atmospheric environment (Oxford, England : 1994)》2010,44(10):1292-1300
Aerosol (total suspended particulate) samples collected at three diverse locations (urban-commercial, semi-urban and rural-agricultural) in Patiala, India were analyzed for loss on ignition (LOI) and organic tarry matter (OTM) content in ambient air during crop residue burning (CRB) episodes and non-crop residue burning (NCRB) months in 2006–2007. Results showed high levels of LOI and OTM during wheat and rice crop residue-burning periods at all the sites. Higher levels were obtained during rice crop residue-burning period as compared to the wheat residue-burning period. At semi-urban site, LOI varied between 53 ± 36 μg m?3 and 257 ± 14 μg m?3 constituting 38–78% (w/w) part of the aerosols whereas levels of OTM varied between 0.98 ± 0.11 μg m?3 and 7.93 ± 2.76 μg m?3 comprising 0.42–3.28% (w/w) fraction. At rural-agricultural area site, levels of LOI varied between 86 ± 40 μg m?3 and 293 ± 70 μg m?3 comprising 27–84% (w/w), whereas OTM levels varied between 1.31 ± 0.64 μg m?3 and 10.09 ± 6.56 μg m?3 constituting 0.83–2.42% (w/w) fraction of the aerosols. At urban-cum-commercial site, levels of LOI and OTM varied between 48 ± 23 μg m?3 and 281 ± 152 μg m?3 and 2.53 ± 1.23 μg m?3 and 17.40 ± 8.50 μg m?3, constituting 24–62% (w/w) part of the aerosols, respectively. Results also indicated that OTM and LOI were integral parts of aerosols and their concentrations were influenced by the crop residue burning practices with incorporated effect of vehicular activities in Patiala. 相似文献
994.
Thakur Ravindra Singh Kumar Aditya Lugun Onila Ansari Nasreen Ghazi Prasad Satgur Das Triparna Gupta Neha Patel Devendra Kumar 《Environmental science and pollution research international》2023,30(10):25181-25192
Environmental Science and Pollution Research - In recent years, special attention has been given to emission research that led to the deposition of toxicants from road traffic. Thus, it is... 相似文献
995.
Kopalakrishnaswami Arjun Singh Loni Reyhaneh Najafi Gholamhassan Natarajan Sendhil Kumar 《Environmental science and pollution research international》2023,30(8):20065-20076
Environmental Science and Pollution Research - Solar parabolic dish concentrator is one of the high-temperature applications of more than 400 °C for thermal and electrical power... 相似文献
996.
The aim of this research was to pillar the bentonite clay (Bt) with polyhydroxy tin chloride. The synthesized Tin-pillared interlayer clay (Sn-PILC) was characterized using X-ray diffraction (XRD), Fourier Transform Infrared spectra (FT-IR), Brunauer-Emmer Teller (BET) analysis, Thermogravimetric analysis (TGA), and Scanning Electron Microscopy (SEM). Adsorption capacity of raw-Bt and tin pillared interlayer clay (Sn-PILC) was examined for two dyes, namely, Malachite Green (MG) and Chrysoidine-Y (CY) from their aqueous solutions. The effects of physicochemical parameters like solution pH, dose, and dye concentration were investigated. The maximum adsorption efficiency at equilibrium dye concentration for Sn-PILC was 66.229 mg g–1 for MG and 63.792 mg g–1 for CY. Sn-PILC obeyed Langmuir isotherm for both the dyes whereas raw-Bt followed Freundlich isotherm. On the other hand, both adsorbents followed PFO as well as PSO kinetic model, indicating physisorption assisted by chemisorption. Thermodynamic studies were performed to determine the adsorption behavior of Sn-PILC for both the dyes. Regeneration studies revealed 80% efficiency up-to five adsorption-desorption cycles. 相似文献
997.
Madhavi Rajak Khageshwar Singh Patel Nitin Kumar Jaiswal Raj Kishore Patel Elza Bontempi Eduardo Yubero Laurent Matini Sema Yurdakul Pablo Martín-Ramos 《环境质量管理》2023,32(3):287-299
Soil quality in urban areas in India is degraded due to multiple anthropogenic activities. The objectives of this work are to determine the concentration variations, toxicity, and sources of carbons, metals, and ions in the surface soil of Raipur, the industrialized capital city of Chhattisgarh state, India. High concentrations of Al, K, Ca, Ti, Fe, and elemental carbon (EC) were registered. Relatively lower concentrations of V, Cr, Mn, Ni, Cu, Zn, Sr, Ba, Pb, organic carbon (OC), and carbonate carbon (CC), as well as ions (viz. F–, Cl–, NO3–, SO42–, Na+, K+, Mg2+, and Ca2+), were also recorded. EC was found to be one of the major pollutants, although enrichment factors pointed to high contamination with SO42–, K+, Mg2+, Cr, Mn, and Pb; and extreme contamination with NO3– and Ca2+. The spatial and temporal variations, enrichment factors, toxicity, and sources of the chemical species detected in the soil are discussed. 相似文献
998.
Nair Ramya Ramankutty Rangaswamy Boobal Sarojini Bright Singh Isaac Joseph Valsamma 《Environmental science and pollution research international》2020,27(10):10541-10552
Environmental Science and Pollution Research - Bioaugmented zero water exchange aquaculture production systems (ZWEAPS) maintained with minimal or no water exchange prevent the ammonia accumulation... 相似文献
999.
Isoprene is a dominant constituent of the global biogenic volatile organic compounds budget. It plays an important role in
regulating the atmospheric trace gas composition including tropospheric ozone concentrations. In this study, monthly measurements
of isoprene emission rates were carried out over a 1-year period (December 2002–November 2003) from four Indian deciduous
tree species, namely Ficus relegiosa, Ficus infectoria, Pongamia pinnata, and Morus alba, using branch enclosure method. Significantly high monthly variations in isoprene emission rates were observed in all four-plant
species. Also, each plant species exhibited pronounced seasonal variation in isoprene emission. Maximum isoprene emissions
were observed during summer and minimum during the winter or spring months. 相似文献
1000.
Singh PP Mall M Singh J 《Journal of environmental biology / Academy of Environmental Biology, India》2006,27(1):153-156
In the present study effect of fertilizer factory effluent on seed germination, seedling growth and chlorophyll content of gram (Cicer aeritenum) has been carried out, at different concentration of the effluent and time intervals. The effluent is alkaline in nature with strong ammonia odour. The germination percentage of seed, seedling growth and chlorophyll content showed a gradual decline with increase in effluent concentration. At 25% concentration of the effluent, growth promotion in terms of root, shoot length and increase in chlorophyll content recorded at 21 days. However, at higher concentrations of the effluent toxic effects were observed at 21 days. The study suggests that the effluent can be used safely for Cicer aeritenum cultivation, only after proper treatment and dilution. 相似文献