Quantitative Separation of As(III) and As(V) from a Synthetic Water Solution Using Ion Exchange Columns in the Presence of Fe and Mn Ions     

Prasenjit Mondal  Chandrajit Balomajumder  Bikash Mohanty 《洁净——土壤、空气、水》2007,35(3):255-260

The quantitative separation of As(III) from a water sample containing As(III) and As(V) in the presence of Fe and Mn in an ion exchange resin (AG1 X8) column for the speciation of arsenic is described. Individual and combined effects of Fe and Mn on the separation of As(III) from the solution have been studied separately. In absence of Fe and Mn, the ratio between the As(T) concentration in the eluent and the As(III) concentration in the original sample has been found to be 0.9717 under optimum process conditions. The presence of Fe(II) in the water sample increased the As(T) concentration in the eluent whereas Mn(II) decreased it. Combined effects of Fe and Mn on the percentage increment in the eluent arsenic concentration have been expressed by additive and interactive models. The interactive model has been developed by a statistical software with a 95 % confidence level. In most of the cases the error on the determination of the As(III) concentration had a minimum when using the interactive model.  相似文献   

Evaluation and augmentation of safe drinking water supply schemes in Salur Mandal,Vizainagaram district,Andhra Pradesh     

Nepal C. Mondal  Surendra N. Das 《Journal of the Geological Society of India》2012,80(1):57-64

In order to assess the groundwater potentiality and augmentation of water supply schemes, estimation of the safe yield, well loss, formation loss, horse power of pump, depth of pump installation and duration of the pumping are essential. These parameters are estimated either by means of in-situ test or laboratory test. But the applicability of result from the laboratory test has limitations while in-situ tests give real representation of individual well of aquifer. The most common in-situ test is pumping test performed on well, which involves measurement of the fall and rise of water level with respect to time. The changes in water level (drawdown/recovery) and its quality are caused due to pumping of water from the well. Such study was carried out in Salur Mandal, Vizainagaram, Andhra Pradesh, India.  相似文献   

Book Review     

P. Krishnamurthy  Subhajyoti Das  R. H. Sawkar  Tridib Kumar Mondal 《Journal of the Geological Society of India》2014,84(2):239-250

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Retraction Note: Development prospects of groundwater resources in an elliptical shape island,Union Territory of Lakshadweep,India     

N. C. Mondal  D. V. Sarwade  V. S. Singh 《Environmental Earth Sciences》2014,71(5):2481-2481

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Geotechnical assessment of cut slopes in the landslide-prone Himalayas: rock mass characterization and simulation approach     

Siddique  Tariq  Mondal  M. E. A.  Pradhan  S. P.  Salman  M.  Sohel  M. 《Natural Hazards》2020,104(1):413-435

Natural Hazards - The roadway networks serve as arteries for the ongoing socio-economic activities within the Himalayan region. The perilous conditions of geologically active and fragile terrain...  相似文献   

Soil erosion potential hotspot zone identification using machine learning and statistical approaches in eastern India     

Chakrabortty  Rabin  Pal  Subodh Chandra  Sahana  Mehebub  Mondal  Ayan  Dou  Jie  Pham  Binh Thai  Yunus  Ali P. 《Natural Hazards》2020,104(2):1259-1294

Natural Hazards - Land degradation is very severe in the subtropical monsoon-dominated region due to the uncertainty of rainfall in the long term, and most of the rainfall occurs with high...  相似文献