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https://www.readbyqxmd.com/read/27872578/morphology-and-morphogenesis-of-a-new-oxytrichid-ciliate-notohymena-limus-n-sp-ciliophora-oxytrichidae-from-delhi-india
#1
Ilams Naqvi, Renu Gupta, Seema Makhija, Ravi Toteja, Jeeva S Abraham, S Sripoorna, Hamed A El-Serehy, Fahad A Al-Misned
The morphology and morphogenesis of a new oxytrichid ciliate, Notohymena limus n. sp. were studied in vivo and after protargol impregnation. The new ciliate was isolated from the sewage sludge at Delhi Jal Board Sewage Treatment Plant located at Rithala, Delhi, India, using the non-flooded Petri dish method. N. limus n. sp. is characterized as follows: flexible dorsoventrally flattened ellipsoidal body; Notohymena-pattern undulating membranes; adoral zone of membranelles (AZM) occupied about 39% of the body length, and consists of around 26 membranelles; large and deep buccal cavity; colorless subpellicular granules present in groups and arranged around the bases of dorsal bristles; 4 macronuclear nodules; 2 micronuclei; 18 fronto-ventral-transverse (FVT) cirri in typical Oxytricha-pattern; 6 dorsal rows of bristles; 3 caudal cirri; about 16 right and 15 left marginal cirri; N...
November 2016: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/27053056/long-term-impact-of-sewage-irrigation-on-soil-properties-and-assessing-risk-in-relation-to-transfer-of-metals-to-human-food-chain
#2
Ramu Meena, S P Datta, Debasis Golui, B S Dwivedi, M C Meena
A case study was undertaken to assess the risk of sewage-irrigated soils in relation to the transfer of trace elements to rice and wheat grain. For this purpose, peri-urban agricultural lands under the Keshopur Effluent Irrigation Scheme (KEIS) of Delhi were selected. These agricultural lands have been receiving irrigation through sewage effluents since 1979. Sewage effluent, groundwater, soil, and plant (rice and wheat grain) samples were collected with GPS coordinates from this peri-urban area. Under wheat crop, sewage irrigation for four decades resulted into a significant buildup of zinc (141 %), copper (219 %), iron (514 %), nickel (75...
July 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/26585958/impact-of-wastewater-irrigation-on-the-dynamics-of-metal-concentration-in-the-vadose-zone-simulation-with-netpath-part-ii
#3
Santosh K Deshmukh, Anil Kumar Singh, Siba Prasad Datta
Understanding and quantification of geochemical processes in vadose zone of sewage-effluent-irrigated soils are helpful in predicting the transference of metals and other ions to food chain and groundwater. Hence, an attempt has been made to simulate various geochemical processes occurring in the flow path of infiltrating sewage water down the vadose zone with the help of Net Geochemical Reaction Along the Flow Path (NETPATH). This study area was located in Western Delhi, India, where sewage effluents originating from Keshopur Sewage Treatment plant have been used for irrigation since 1979...
December 2015: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/26483086/impact-of-wastewater-irrigation-on-the-dynamics-of-metal-concentrations-in-the-vadose-zone-monitoring-part-i
#4
Santosh K Deshmukh, Anil Kumar Singh, Siba Prasad Datta
Agricultural lands in the peri-urban area of New Delhi have been irrigated with treated wastewater from the Keshopur Effluent Irrigation Scheme (KEIS) since 1979. An attempt has been made to study the influence of wastewater irrigation on pH, electrical conductivity, organic carbon, and dynamics of heavy metal concentrations in vadose zone under KEIS. For this study, agricultural lands which have been receiving the sewage irrigation for 20, 10, and 5 years were selected. Adjacent tube well water-irrigated fields were selected and used as reference...
November 2015: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/25204065/identification-of-the-solid-phase-in-relation-to-the-solubility-of-nickel-in-alluvial-soils
#5
Mandira Barman, S P Datta, R K Rattan
The chemical equillibria between nickel (Ni) ion present in soil solution and solid phases govern the solubility vis-a-vis availability of Ni in soil. Therefore, stability of various Ni containing minerals in relation to pH was studied to identify the probable solid phases, which govern the solubility of Ni in some alluvial soils under intensive cultivation in and around Delhi. Free Ni2+ activity (pNi2+) as estimated by Baker soil test, ranged from 13.1 to 16.2. Highest free Ni2+ activity (pNi2+ = 13.1) was recorded in industrial effluent irrigated soil collected from Sonepat, Haryana...
September 2014: Journal of Environmental Biology
https://www.readbyqxmd.com/read/24749372/assessment-of-pollutants-and-gaseous-emissions-in-sewer-network-in-nct-of-delhi
#6
P Aswale, N N Rao, M Karthik, R Dhodapkar, G Patkar, T Nandy
The NCT of Delhi in India handles domestic sewage through a long sewerage networks. The network is into eight divisions. The aim of the present study is to arrive at a correlation between sewage quality and gas emissions in the sewer network of various divisions. This will aid in forewarning the sewer workers about the safety precautions. The health effects due to toxic sewer gases exposure and assessment of hazardous conditions and hazard potential are discussed. The study areas were broadly classified as residential, commercial, industrial and mix (combination of residential & commercial) for comparison...
April 2012: Journal of Environmental Science & Engineering
https://www.readbyqxmd.com/read/24498804/histopathology-and-bioaccumulation-of-heavy-metals-cr-ni-and-pb-in-fish-channa-striatus-and-heteropneustes-fossilis-tissue-a-study-for-toxicity-and-ecological-impacts
#7
Mahino Fatima, Nazura Usmani
Abstract: The water samples were collected from the 22 km segment III of Yamuna River from Okhla barrage. This segment receives water from 17 sewage drains of Delhi, Western Yamuna Canal (WYC), upper Ganga canal via Najafgarh drain and Hindon cut canal. Hence, the water samples collected were used to determine the presence of Chromium, Nickel and Lead through Atomic Absorption Spectrophotometry. The concentration of these heavy metals were much above the maximum permissible limits set by WHO. This was bound to have its influence on the riverine flora and fauna...
May 1, 2013: Pakistan Journal of Biological Sciences: PJBS
https://www.readbyqxmd.com/read/24085621/occurrences-and-fate-of-selected-human-antibiotics-in-influents-and-effluents-of-sewage-treatment-plant-and-effluent-receiving-river-yamuna-in-delhi-india
#8
Pravin K Mutiyar, Atul K Mittal
Antibiotics consumption has increased worldwide, and their residues are frequently reported in aquatic environments. It is believed that antibiotics reach aquatic water bodies through sewage. Medicine consumed for healthcare practices are often released into sewage, and after sewage treatment plant, it reaches the receiving water bodies of lakes or rivers. In the present study, we determined the fate of some commonly used antibiotics in a sewage treatment plant (STP) located in Delhi and the environmental concentration of these antibiotics in the Yamuna River, which receives the sewage and industrial effluent of Delhi...
January 2014: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/23838447/exiguobacterium-alkaliphilum-sp-nov-isolated-from-alkaline-wastewater-drained-sludge-of-a-beverage-factory
#9
Niha Mohan Kulshreshtha, Rita Kumar, Zareena Begum, S Shivaji, Anil Kumar
A facultatively anaerobic, alkaliphilic, Gram-stain-positive, rod-shaped bacterium, designated strain 12/1(T), isolated from alkaline wastewater drained sludge of a beverage industry facility located near New Delhi, India, was subjected to a polyphasic taxonomic study. Phylogenetic analysis based on 16S rRNA gene sequence comparisons revealed that strain 12/1(T) belonged to the genus Exiguobacterium and was most closely related to Exiguobacterium aurantiacum DSM 6208(T) (99.46 %), E. aquaticum IMTB-3094(T) (99...
December 2013: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/23755152/higher-isolation-of-ndm-1-producing-acinetobacter-baumannii-from-the-sewage-of-the-hospitals-in-beijing
#10
Chuanfu Zhang, Shaofu Qiu, Yong Wang, Lihua Qi, Rongzhang Hao, Xuelin Liu, Yun Shi, Xiaofeng Hu, Daizhi An, Zhenjun Li, Peng Li, Ligui Wang, Jiajun Cui, Pan Wang, Liuyu Huang, John D Klena, Hongbin Song
Multidrug resistant microbes present in the environment are a potential public health risk. In this study, we investigate the presence of New Delhi metallo-β-lactamase 1 (NDM-1) producing bacteria in the 99 water samples in Beijing City, including river water, treated drinking water, raw water samples from the pools and sewage from 4 comprehensive hospitals. For the bla NDM-1 positive isolate, antimicrobial susceptibility testing was further analyzed, and Pulsed Field Gel Electrophoresis (PFGE) was performed to determine the genetic relationship among the NDM-1 producing isolates from sewage and human, as well as the clinical strains without NDM-1...
2014: PloS One
https://www.readbyqxmd.com/read/22546807/toxicity-and-treatability-of-leachate-application-of-uasb-reactor-for-leachate-treatment-from-okhla-landfill-new-delhi
#11
V Singh, A K Mittal
This study reports applicability of upflow anaerobic sludge blanket (UASB) process to treat the leachate from a municipal landfill located in Delhi. A laboratory scale reactor was operated at an organic loading rate of 3.00 kg chemical oxygen demand (COD)/m(3) d corresponding to a hydraulic retention time (HRT) of 12 h for over 8 months. The effect of toxicity of leachate, and feed composition on the treatability of leachate was evaluated. Average COD of the leachate, during the study period varied between 8,880 and 66,420 mg/l...
2012: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/21478057/dissemination-of-ndm-1-positive-bacteria-in-the-new-delhi-environment-and-its-implications-for-human-health-an-environmental-point-prevalence-study
#12
Timothy R Walsh, Janis Weeks, David M Livermore, Mark A Toleman
BACKGROUND: Not all patients infected with NDM-1-positive bacteria have a history of hospital admission in India, and extended-spectrum β-lactamases are known to be circulating in the Indian community. We therefore measured the prevalence of the NDM-1 gene in drinking water and seepage samples in New Delhi. METHODS: Swabs absorbing about 100 μL of seepage water (ie, water pools in streets or rivulets) and 15 mL samples of public tap water were collected from sites within a 12 km radius of central New Delhi, with each site photographed and documented...
May 2011: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/20559712/impact-of-long-term-wastewater-application-on-microbiological-properties-of-vadose-zone
#13
Santosh K Deshmukh, Anil Kumar Singh, Siba Prasad Datta, K Annapurna
Impact of wastewater irrigation on some biological properties was studied in an area where treated sewage water is being supplied to the farmers since 1979 in the western part of National Capital Territory of New Delhi under Keshopur Effluent Irrigation Scheme. Three fields were selected which had been receiving irrigation through wastewater for last 20, 10 and 5 years. Two additional fields were selected in which the source of irrigation water was tubewell. The soil bacterial and fungal population density was studied in soil layers of 0-15, 15-30, 30-60 and 60-120 cm depths...
April 2011: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/20532928/surveillance-of-hepatitis-e-virus-in-sewage-and-drinking-water-in-a-resettlement-colony-of-delhi-what-has-been-the-experience
#14
Rajib Kishore Hazam, Rajiv Singla, Jugal Kishore, Saudan Singh, Ram Kumar Gupta, Premashis Kar
Hepatitis E virus infection is one of the major causes of hepatitis and has been responsible for many sporadic waterborne hepatitis epidemics. We studied 141 cases of viral hepatitis in the Gokulpuri area and collected the tap water, sewage water and serum samples from the individual cases of hepatitis in the community. Samples were analysed for the presence of hepatitis E virus (HEV) by RT-PCR, followed by sequencing. Forty-one out of 141 (29.08%) cases of viral hepatitis had evidence of HEV infection, detected by serology and/or RT-PCR...
August 2010: Archives of Virology
https://www.readbyqxmd.com/read/19882116/chlorella-minutissima-a-promising-fuel-alga-for-cultivation-in-municipal-wastewaters
#15
Ashish Bhatnagar, Monica Bhatnagar, Senthil Chinnasamy, K C Das
It is imperative to slash the cost of algal oil to less than $50 bbl(-1) for successful algal biofuel production. Use of municipal wastewater for algal cultivation could obviate the need for freshwater and the nutrients--N and P. It would also add CO2 through bacterial activity. Chlorella minutissima Fott et Nova dominated the entire phycoflora year around and through each stage of the wastewater treatment at the oxidation pond system of Wazirabad (Delhi) in India. The ability to grow so profusely in such varied and contrasting situations made this alga unique...
May 2010: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/19208515/hepatitis-e-virus-is-a-leading-cause-of-acute-on-chronic-liver-disease-experience-from-a-tertiary-centre-in-bangladesh
#16
Mamun-Al Mahtab, Salimur Rahman, Mobin Khan, Md Fazal Karim
BACKGROUND: Acute-on-chronic liver failure (ACLF) is common in Bangladesh. Acute viral E hepatitis is sporadically encountered in this country each year, with a rising incidence in the rainy season. This study aimed to identify the etiology of ACLF in Bangladesh. METHODS: In this retrospective study, 69 ACLF patients were included. They presented to our department at the Bangabandhu Sheikh Mujib Medical University in Dhaka. History of diseases was recorded and appropriate investigations were conducted in all patients...
February 2009: Hepatobiliary & Pancreatic Diseases International: HBPD INT
https://www.readbyqxmd.com/read/19020982/do-bod-modeling-of-river-yamuna-for-national-capital-territory-india-using-stream-ii-a-2d-water-quality-model
#17
Deepshikha Sharma, Ram Karan Singh
The study illustrates the utility of STREAM II as a modeling package to determine the pollution load due to organic matter in the River Yamuna during its course through the National Capital Territory that is Delhi, India. The study was done for a period from 1995-2005. Model simulates the dissolved oxygen and biochemical oxygen demand parameters in a two-dimensional fashion by performing the numerical solution to a set of differential equations representing aquatic life with the help of Crank-Nicholson finite difference method...
December 2009: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/18709932/phytoextraction-of-zinc-copper-nickel-and-lead-from-a-contaminated-soil-by-different-species-of-brassica
#18
T J Purakayastha, Thulasi Viswanath, S Bhadraray, P K Chhonkar, P P Adhikari, K Suribabu
In a pot culture experiment, five different species of Brassica (Brassica juncea, Brassica campestris, Brassica carinata, Brassica napus, and Brassica nigra) were grown for screening possible accumulators of heavy metals, viz. Zn, Cu, Ni, and Pb. The plants were grown to maturity in a soil irrigated with sewage effluents for more than two decades in West Delhi, India. The soil analysis showed enhanced accumulation of Zn, Cu, Ni, and Pb in this sewage-irrigated soil. Among all species, B. carinata showed the highest concentration (mg kg(-1)) as well as uptake (microg pot(-1)) of Ni and Pb at maturity...
January 2008: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/18575954/efficiency-evaluation-of-sewage-treatment-plants-with-different-technologies-in-delhi-india
#19
Priyanka Jamwal, Atul K Mittal, Jean-Marie Mouchel
Physical, chemical and microbiological efficiencies of Sewage Treatment Plants (STPs) located in Delhi's watershed in context of different treatment technologies employed in these plants have been determined. There were in all seventeen STPs treating domestic wastewater which were studied over a period of 12 months. These STPs were based on Conventional Activated sludge process (ASP), Extended aeration (Ex. Aeration), physical, chemical and biological removal treatment (BIOFORE) and oxidation pond treatment process...
June 2009: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/18273746/bioleaching-of-heavy-metals-from-anaerobically-digested-sewage-sludge
#20
Ashish Pathak, M G Dastidar, T R Sreekrishnan
The effects of sulfur concentration, initial pH of the sludge and sludge solid content on metal bioleaching were examined using anaerobically digested sewage sludge procured from a typical sewage treatment plant in Delhi, the capital city of India. Experiments on effect of sulfur concentration were carried out using 0-4 g L(-1) of elemental sulfur to optimize the concentration of elemental sulfur for efficient bioleaching. For the type of sludge (20 g L(-1) solid content) used in the present study, 2 g L(-1) of elemental sulfur was found sufficient in metal bioleaching in the following order: Zn 86%, Cu 71...
March 2008: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
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