Article
Environmental Sciences
B. Praveena, T. Lakshmi Prasad, M. Pramod Kumar, B. Lakshmanna, N. Jayaraju
Summary: This study examines the concentration and pollution status of heavy metals in mangrove plant parts and sediment samples in Nizampatnam Bay, India. It is the first study to compare data from both mangrove and sediment samples in this region. The heavy metal concentrations were determined using ICPOES, and it was found that Cd and Cu exceeded the optimal values. Various environmental indices were used to assess contamination levels and identify contributing chemical elements in the sediment samples. Factors such as bio-concentration and translocation were calibrated to determine the mangrove plant's capacity for heavy metal accumulation and translocation in different parts of the plants.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Mohammad Nuruzzama, Waliur Rahaman, Rahul Mohan
Summary: Coastal lakes in Antarctica receive significant amounts of ions and trace elements during the austral summer, with dissolved concentrations lower than average seawater. Sea-salt spray and chemical weathering are dominant sources, while phosphate and molybdenum act as limiting nutrients. Dissolved copper plays a key role in organic matter decomposition, and excess barium in lake sediments suggests significant removal during transport.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Das Avijit, D. Kamalakannan
Summary: This study presents a geochemical profile of the East Kolkata Wetlands and evaluates its efficiency in treating municipal and industrial wastewater. The concentrations of trace metals in untreated pond waters and sediment were analyzed. The results show that the bioremediation of wastewaters containing certain metals was not uniform in all the ponds, with some metals like Zn and As unable to be removed effectively. Mass balance calculations indicated the reduction in differential load after microbial treatment for different metals.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
M. Cyriac, T. R. Gireeshkumar, C. M. Furtado, K. P. Fahad Fathin, K. Shameem, Adnan Shaik, E. R. Vignesh, M. Nair, M. Kocherla, K. K. Balachandran
Summary: This study investigated the impact of seasonal hypoxia induced by upwelling on the distribution, bioavailability, and geochemical partitioning of selected trace metals in surficial sediments along the southwest coast of India. The results indicated that grain size, organic carbon, and iron were major factors influencing the distribution of trace metals in the surface sediments, with Ni, Cr, and Pb showing moderate contamination levels. The study highlights the need for regular geochemical assessment to control metal pollution in the coastal environment, which is a major fishery resource.
MARINE POLLUTION BULLETIN
(2021)
Article
Marine & Freshwater Biology
B. Lakshmanna, N. Jayaraju, G. Sreenivasulu, T. Lakshmi Prasad, K. Nagalakshmi, M. Pramod Kumar, M. Madakka, P. Vijayanand
Summary: Thirty locations in the Coastal area of Nizampatnam Bay and Lankevanidibba were studied for heavy metals and their concentrations in the Coastal water. Cd, Co, Cr, Fe, Mn, Pb, and Zn were found to be the main pollutants, with Cd showing elevated contamination in all sampling sites. The accumulation of metals in coastal water was higher, indicating increased pollution due to industrial waste discharge and anthropogenic activities.
JOURNAL OF SEA RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Caiyao Xu, Xiaohan Wang, Lijie Pu, Fanbin Kong, Bowei Li
Summary: Quantitative analysis of plant community species composition and succession in a coastal reclamation area revealed the significant impact of reclamation activities on vegetation and highlighted the importance of ecological protection and restoration. The study found that plant communities in the area changed significantly after reclamation, with different dominant species and reduced plant coverage and biomass. The results provide valuable insights for understanding and managing coastal reclamation areas.
Article
Chemistry, Multidisciplinary
Dovile Karloniene, Donatas Pupienis, Darius Jarmalavicius, Aira Dubikaltiniene, Gintautas Zilinskas
Summary: Geochemical analysis plays a crucial role in understanding sediment transport, distribution, provenance, and coastal conditions. Research conducted along the south-eastern Baltic Sea coast in Lithuania revealed different patterns of trace metal distribution in mainland and spit coasts, influenced by coastal processes. Erosion-dominated areas on the mainland coast showed higher trace metal concentrations, while active sediment loading areas on the spit coast had increased concentrations due to northward along-shore transport.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
N. Arunpandi, R. Jyothibabu, M. K. M. Savitha, S. Parthasarathi, C. P. Rashid, M. P. Josna, S. Santhikrishnan, S. Sarath, K. K. Balachandran
Summary: The study in the Kochi backwaters found that the concentration of trace metals in different parts of the water hyacinth followed the order: roots > stolon > leaves across all seasons. The trace metals, except for Fe, showed highest concentration during the Pre-Monsoon season due to water stagnancy caused by flow restrictions, while Fe concentration was high during the Southwest Monsoon season with increased river influx. Overall, the results suggest that hydrographical alterations upstream have significant impacts on trace metal distribution in water hyacinths.
MARINE POLLUTION BULLETIN
(2021)
Article
Green & Sustainable Science & Technology
R. S. Mahendra, P. C. Mohanty, P. A. Francis, Sudheer Joseph, T. M. Balakrishnan Nair, T. Srinivasa Kumar
Summary: This study evaluates the risk level of villages and buildings along the Andhra Pradesh coast in India by calculating the exposure index, coastal cumulative vulnerability index, and socioeconomic vulnerability index. The findings show that certain villages and buildings have a very high vulnerability. The study also provides recommendations for policy interventions and alternate livelihood options.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Environmental Sciences
Udai Ram Gurjar, K. A. Martin Xavier, Satya Prakash Shukla, Ashok Kumar Jaiswar, Geetanjali Deshmukhe, Binaya Bhusan Nayak
Summary: The study found the presence of microplastics in water, sediment, and marine biota samples collected from the coastal waters of Mumbai, India, with fibers being the predominant type, and microplastics below 250 microns dominating the samples. Eleven different types of plastic polymers were identified, indicating the transfer of microplastics through the food chain to higher trophic levels, emphasizing the need for further research on interventions to reduce microplastic contamination in fish for human consumption.
Article
Environmental Sciences
Krupa Ratnam, Dilip Kumar Jha, M. Prashanthi Devi, Gopal Dharani
Summary: This study investigates the physicochemical characteristics of the Swarnamukhi river estuary and surrounding sea in Nellore, southeast coast of India. The findings show significant variations in factors such as atmospheric temperature, water temperature, biochemical oxygen demand, ammonia, and total nitrogen. Nitrate and silicate are identified as key limiting factors. These findings are essential for the establishment of reference conditions and comparison studies with similar ecosystems in the tropical region to improve environmental conservation and management.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
D'Souza Nishitha, Athiyarath Krishnan Sudheer, Kumar Arun, Vadakkeveedu Narayan Amrish, Gaddam Mahesh, Harikripa Narayana Udayashankar, Keshava Balakrishna
Summary: This study investigates the distribution of trace metals in the dissolved phase of estuaries in southwestern India and their impact on human health and ecosystem. The behavior of these trace metals in estuarine environments is found to be non-conservative. Risk assessment studies show that while the studied metals are below risk thresholds for adults and children, children are more susceptible to health risks through dermal exposure.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Nimelan Veerasamy, Sarata Kumar Sahoo, Rajamanickam Murugan, Sharayu Kasar, Kazumasa Inoue, Masahiro Fukushi, Thennaarassan Natarajan
Summary: ICP-MS was used to measure trace and rare earth elements in soils from beach placer deposits in Odisha, India. The study found significant enrichment of elements like Cr, Mn, Fe, Co, Zn, Y, Zr, Cd, U, and extreme enrichment of Th. The high concentration of Th and light REEs suggests soil enrichment with monazite minerals, with a felsic origin indicated by high LREEs/HREEs ratios and negative Eu anomaly. The enhancement of trace and REEs in soil compared to hinterland rocks like granite and charnockite is of natural origin.
Article
Water Resources
Murty Pln, Siva Srinivas Kolukula
Summary: This study aims to comprehensively analyze storm surges and associated coastal inundation along the East Coast of India, utilizing historical and projected cyclone tracks. The impact of climate change on cyclone path and intensity is considered. The ADCIRC model is used to compute storm surge heights and associated coastal inundation. The study provides valuable insights for storm surge operational centers and disaster management applications.
JOURNAL OF WATER AND CLIMATE CHANGE
(2023)
Article
Environmental Sciences
Sasmita Rath, Abhipsa Bal, Biswaranjan Paital
Summary: The study examined the seasonal bioaccumulation of heavy metals and organic loads in zooplanktons in Haripur creek along the Bay of Bengal in India. The results suggested a correlation between heavy metal accumulation, organic loads, and environmental factors, potentially leading to frequent die-off events of organisms along the Bay of Bengal coast.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
R. S. Sathishkumar, A. Sundaramanickam, Gouri Sahu, A. K. Mohanty, T. Ramesh, S. Ajmal Khan
Summary: The present study reports a dense bloom of the marine diatom Hemidiscus hardmanianus observed off the Tuticorin coast in the Gulf of Mannar. The study also found the first record of a bloom of H. hardmanianus in the Gulf of Mannar. The density of H. hardmanianus was highest in the bloom site, accounting for almost 97% of the total phytoplankton population, with the diatom Biddulphia biddulphiana also observed in strong numbers.
MARINE POLLUTION BULLETIN
(2021)
Article
Materials Science, Multidisciplinary
P. Vinodkumar, G. Jaiganesh, Sitakanta Panda, R. K. Padhi, U. Madhusoodanan, B. S. Panigrahi
Summary: SrBPO5 doped with different ions were successfully prepared and characterized using various techniques. The presence of UO22+ significantly enhanced the emission of Pr3+ and resulted in Stark splitting, suggesting dual-site occupancy of the uranyl ion in the SrBPO5 host.
RESULTS IN PHYSICS
(2021)
Article
Materials Science, Ceramics
P. Ramakrishna, Sitakanta Panda, P. Vinodkumar, R. K. Padhi, Hrudananda Jena, S. Panigrahi
Summary: The borophosphate glasses doped with Ce and Dy exhibited characteristic Photoluminescence emissions in different regions. Optimization of cerium and dysprosium concentrations was done to maximize white light emission. Lifetime decay measurements were carried out to study energy transfer in the glasses.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Inorganic & Nuclear
R. K. Padhi, P. Vinodkumar, Sitakanta Panda, B. S. Panigrahi
Summary: The photoluminescence properties of Sm+3 doped ternary alkaline earth silicate phosphor Ca3-xMgSi2O8: xSm(+3) synthesized by sol-gel method were studied. The crystal structure of the phosphor was characterized by XRD, SEM, and FTIR spectroscopy. The emission spectrum consisted of four bands, with luminescence quenching observed beyond the optimal doping concentration, primarily due to quadrupole-quadrupole interactions.
SOLID STATE SCIENCES
(2021)
Article
Spectroscopy
P. Vinodkumar, Sitakanta Panda, G. Jaiganesh, R. K. Padhi, U. Madhusoodanan, B. S. Panigrahi
Summary: A single-component white-light emitting phosphor SrBPO5: Ce3+, Dy3+ was prepared with high color purity and thermal stability through high temperature solid state reaction. The presence of Ce3+ along with Dy3+ resulted in efficient energy transfer and enhancement of Dy3+ luminescence towards white light emission. Energy transfer and thermal stability were confirmed through various studies including temperature-dependent photoluminescence and SEM imaging.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Analytical
Ramakrishna Pagoti, Sitakanta Panda, Vinodkumar Patchapureddy, Ranjib Kumar Padhi, Balakrishnan Subramanian, Hrudananda Jena, Bhabani Shankar Panigrahi
Summary: Neodymium-doped strontium borophosphate (SBP) glass samples with different Nd3+ ion concentrations were prepared and characterized for their optical and thermal properties, demonstrating their suitability for use in solid-state lasers.
Article
Engineering, Environmental
R. K. Padhi
Summary: The majority of surface water dissolved organic matter originates from land and plays a crucial role in the formation of toxic disinfection byproducts. Organic matter extracted from soil samples was studied for its potential to form disinfection byproducts during Cl-2 and ClO2 treatment. Different fractions of soil organic content showed varying impacts on the formation of trihalomethanes and haloacetic acids during chlorine treatment.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Uday Kumar Banala, Nilamadhab Prasad Indradyumna Das, Ranjib Kumar Padhi, Subba Rao Toleti
Summary: The study identified two bacteria, MPW02 and MPW03, isolated from uranium mine wastewaters, with the potential to sequester uranium from carbonate-containing alkaline wastewaters. However, the sequestering property of the two isolates was negatively impacted at different carbonate-bicarbonate buffer concentrations. The investigation revealed distinct mechanisms of uranium sequestration by the two isolates, indicating their potential application in treating alkaline wastewaters containing uranium.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Materials Science, Multidisciplinary
P. Ramakrishna, R. K. Padhi, D. K. Mohapatra, Hrudananda Jena, B. S. Panigrahi
Summary: A series of Gd doped Li2O-ZnO-SrO-B2O3-P2O5 glasses and co-doped samples with different Eu3+ concentrations were synthesized. The effect of Gd doping on the thermal properties of the glasses was studied, and photoluminescence emissions of Gd3+ and Eu3+ were observed in the doped glass matrix. The phonon energy of the glass matrix was calculated, and the suitability of the co-doped glasses for optical display devices was analyzed. The change in the local symmetry environment of the dopant ions with Gd incorporation was also investigated.
Article
Environmental Sciences
S. Barathkumar, R. K. Padhi, P. K. Parida, S. R. Marigoudar
Summary: In this study, in vivo experiments were conducted to investigate the tissue accumulation and cellular toxicity of uranium in the mud crab Scylla serrata. The results revealed that uranium accumulation in S. serrata was organ specific and caused oxidative stress and cellular changes. Histological abnormalities were observed in the gills, hepatopancreas, and muscle, and mitochondrial anomalies were reported for the first time in this species.
Article
Oceanography
Rengasamy Subramaniyan Sathishkumar, Arumugam Sundaramanickam, Ajit Kumar Mohanty, Gouri Sahu, Thangavelu Ramesh, Kumar Balachandar, Ajith Nithin, Parthasarathy Surya, Krishnan Silambarasan
Summary: Seasonal variations in hydrography, trophic status, and plankton community structure were studied along the Tuticorin coastal waters, with significant impact of northeast monsoon and observed massive bloom of Trichodesmium erythraeum affecting water quality and plankton community.
Article
Optics
R. K. Padhi, P. Ramakrishna, P. Vinodkumar, Annapurna Rout
Summary: The color tunability of Ca3-(x+y)TbxSmyMgSi2O8 phosphors was studied via Tb+3 -> Sm+3 energy transfer. It was found that Tb+3 doped samples emitted intense green light, while Sm+3 doped samples emitted strong orange-red light.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Multidisciplinary
P. Ramakrishna, R. K. Padhi, Sanjit Kumar Parida, D. K. Mohapatra, Hrudananda Jena, B. S. Panigrahi
Summary: U/Pr doped and co-doped Li2O-ZnO-SrO borophosphate glasses were prepared and their structural properties, morphological features, and elemental distribution were investigated. The results showed that uranium doping improved the thermal stability and rigidity of the glass host. Intense photoluminescence emissions were observed from both uranium and praseodymium, indicating their potential applications in solid-state lighting.
Article
Multidisciplinary Sciences
Nebiyou Tafesse, Massimiliano Porcelli, Belachew Bacha Hirpessa, Janvier Gasana, R. K. Padhi, Sirak Robele, Argaw Ambelu
Summary: This study investigates the level of trihalomethanes (THMs) in the drinking water supply of Addis Ababa, Ethiopia. The results show that chloroform is the dominant THM in the samples. Factors such as residual chlorine, UV absorbance, phosphate, hardness, and electron conductivity are found to affect the formation of THMs. Regular monitoring and regulation of THMs are necessary for water treatment and distribution.
Article
Chemistry, Inorganic & Nuclear
P. Vinodkumar, R. K. Padhi, Sitakanta Panda, P. Ramakrishna, B. S. Panigrahi
Summary: In this study, the structural and optical properties of stillwellite type SrBPO5 doped with uranium/europium/samarium were investigated, with uranium co-doping significantly influencing the valence distribution of Eu and enhancing the emission intensities of trivalent Eu and Sm. Additionally, the presence of uranium further amplified the Eu3+ luminescence intensity due to the partial oxidation of Eu2+ to Eu3+, providing potential for tuning the Eu-SrBPO5 phosphor to different CIE coordinates.
DALTON TRANSACTIONS
(2021)
