46 research outputs found
Chemical characterization of carbonaceous carbon from industrial and semi urban site of eastern India
No full textA Review on Deposition, Distribution of Polycyclic Aromatic Hydrocarbons in Different Environmental Matrix and Study its Toxicity and Carcinogenic Effect
No full textORIENTAL JOURNAL OF CHEMISTRY A Critical Comparative Study of Indoor Air Pollution from Household Cooking Fuels and its Effect on Health
No full textABSTRACT This paper throws light on household cooking related exposures and level of indoor air pollutants (particulate matter and gaseous pollutants CO, CO 2 , SO 2 , NO, NO 2 ) in different exposure area from the different types of cooking fuels used. Still the prevalence of biomass fuels exists in Indian households, combustion of which releases higher levels of solid and gaseous pollutants during the cooking hours. The indoor air pollutants (SPM, CO, CO 2 , SO 2 , NO, NO 2 ) were measured with handy samplers with different types of cooking fuels (biomass and LPG). For this purpose 50 randomly selected sampled of the indoor air quality were monitored. The results suggests that average concentration of PM 10 (394.07 ìg/m 3 ) and gaseous pollutants (CO-3.15 ppm, CO 2 -492.63 ppm, SO 2 -0.56 ppm, NO-0.58 ppm, NO 2 -0.52 ppm) were highest during cooking hours with biofuels cooking places. Thus, not only the women who are involved in cooking suffer from the various ill effects, but also other family members who are inside the house during cooking hours also face exposures. The recorded SPM (114.73 ìg/m 3 for PM 10 ) and gaseous pollutants (CO-1.34 ppm, CO 2 -379.83 ppm, SO 2 -0.52 ppm, NO-0.54 ppm, NO 2 -0.52 ppm) in LPG using households were lower as compared to biomass fuel using households. Due to the LPG efficiency the time involved in cooking is also low leading to less exposure to the pollutants released
Sustainable Solutions: Reviewing the Future of Textile Dye Contaminant Removal with Emerging Biological Treatments
No full textSynthetic dyes, exceeding 100,000 types on the market and produced at a global scale of over 700,000 tons annually, are extensively used in the textile industry. This industry, a leading contributor to water contamination, relies on dyes like reactive, azo, anthraquinone, and triphenylmethane, resulting in substantial water usage and significant effluent generation. A significant modern challenge is the pollution caused by dye-mixed wastewater, releasing hazardous chemicals into water bodies and posing threats to ecosystems, plants, and human health. Traditionally, physicochemical techniques have addressed textile dye-containing wastewater, but their drawbacks, including cost, inefficiency, and potential secondary pollution, have steered attention towards biological alternatives. Utilizing microorganisms and enzymes, these biological methods, such as microbial cell enzyme immobilization, the biofilm technique, bioreactors, biofuel/bioelectricity production, and genetic engineering, have emerged as promising, cost-effective, and environmentally friendly solutions for efficient dye removal from wastewater. This review paper specifically highlights advanced biological techniques and emphasizes their efficacy in addressing the challenges posed by synthetic textile dyes. Through a systematic review of recent research papers, published results, and observations, this review paper provides insights into emerging biological treatment strategies for effectively removing synthetic textile dyes and contaminants from wastewater
Effect of gamma ray irradiation on optical and luminescence properties of CeO2 doped bismuth glass
No full textHigh lead oxide based Radiation Shielding Window (RSW) glass is highly toxic in nature and thus health haz-ardous. Therefore, a new way to design environmental friendly non-toxic lead-free RSW glass for nuclear application is very much required. In this work, a lead-free non-toxic glass based on multi-component Bi2O3--BaO-B2O3-ZnO-As2O3-MgO-Na2O system has been studied with different concentrations of cerium oxide (CeO2) as doping agent for enhancing radiation shielding effect. The optical properties of cerium doped bismuth based lead-free radiation shielding glass after exposure to gamma radiation up to 105 rad have been studied. The densities of glass varied from 4.59 to 5.05 g/cc on varying concentrations of bismuth oxide and boron trioxide in glass system. The transmission properties in visible regions from 400 to 1000 nm are investigated through UV-visible spectrometer after exposure to gamma radiation on developed glass using 60Co Gamma Chamber GC5000. The structure of glass as characterized by Raman spectroscopy, XRD, Photoluminescence (PL), FESEM with EDAX, refractive index measurement and dilatometry test has been correlated with its properties. The developed bismuth glass could find its application as lead-free RSW glass in nuclear reactors as an alternative to high lead containing glass
Characteristics and seasonal variation of Carbonaceous and Water soluble organic Components in the aerosols over East India
No full text
ORIENTAL JOURNAL OF CHEMISTRY Characteristics and Seasonal Variation of Carbonaceous and Water Soluble Organic Components in the Aerosols over East India
No full textABSTRACT The present investigation intends to measurement of PM 2.5 and PM 10 samples from agricultural (AG) and an Adityapur industrial (AI) site of East India to better characterize the carbonecous and water-soluble organic carbon (WSOC). The current study aimed (a) to determine variation ratio of OC/ PM, EC/PM, WSOC/EC, OC/EC in the study area (b) assess and quantity the Correlation between OC and EC, WSOC and OC, WSOC and PM, WSOC and EC of AG and AI site (c) Analyse the abundance pattern, at AG site indicating dominant contribution from biomass burning sources (woodfuel and agriculture waste) and in AI site sharp contrast influenced by emissions from coal-fired industries. Th
Simulation Based Comparison Between OWL and DSDV
No full textAbstractMobile ad-hoc network is collection of mobile nodes like laptops; cell phones which have limited processing power and limited battery power also have limited bandwidth. MANET is self-adjustable with dynamic topology network, because of its mobile environment, routing face challenges. Main challenges in routing are to maximize delivery ratio and minimize End-to-End delay with minimum use of nodes resources, because mobile nodes have limited batter power and bandwidth. DSDV is proactive type routing protocol which trying to minimize route discovery time by manage route information in routing table and broadcast to other neighbors. OWL is a reactive routing protocol which uses DFS instead of broadcasting of RREQ to all its neighbors. In this paper we are going to compare these two routing protocol on the basis of their power consumption in different phases of routing
