Groundwater Contamination

Fluoride in Groundwater: Causes, Implications and Mitigation Measures

by Elango L

Brindha, K. and Elango, L. (2011) Fluoride in Groundwater: Causes, Implications and Mitigation Measures. In:  Monroy, S.D. (Ed.), Fluoride Properties, Applications and Environmental Management, 111-136.

Groundwater flow and radionuclide decay-chain transport modelling around a proposed uranium tailings pond in India

by Elango L

L. Elango, K. Brindha, L. Kalpana, Faby Sunny, R. N. Nair and R. Murugan
Hydrogeology Journal
DOI: 10.1007/s10040-012-0834-6

Extensive hydrogeological investigations followed by three-dimensional groundwater flow and contaminant transport... more Extensive hydrogeological investigations followed by three-dimensional groundwater flow and contaminant transport modelling were carried out around a proposed uranium tailings pond at Seripalli in Andhra Pradesh, India, to estimate its radiological impact. The hydrogeological parameters and measured groundwater level were used to model the groundwater flow and contaminant transport from the uranium tailings pond using a finite-element-based model. The simulated groundwater level compares reasonably with the observed groundwater level. Subsequently, the transport of long-lived radionuclides such as 238U, 234U, 230Th and 226Ra from the proposed tailings pond was modelled. The ingrowths of progenies were also considered in the modelling. It was observed that these radionuclides move very little from the tailings pond, even at the end of 10,000 y, due to their high distribution coefficients and low groundwater velocities. These concentrations were translated into committed effective dose rates at different distances in the vicinity of the uranium tailings pond. The results indicated that the highest effective dose rate to members of the public along the groundwater flow pathway is 2.5 times lower than the drinking water guideline of 0.1 mSv/y, even after a long time period of 10,000 y.

Arsenate Incorporation in Gypsum Probed by Neutron, X-ray Scattering and Density Functional Theory Modeling

by Alejandro Fernandez-Martinez

Groundwater Quality and Vulnerability Mapping of an Unconfined Coastal Aquifer

by Elango L

S. Sathish and L. Elango
Journal of Spatial Hydrology
11/1, 2011

Low-level mercury removal from groundwater using a synthetic chelating ligand

by Lisa Blue

Oxidative dissolution of biogenic uraninite in groundwater at Old Rifle, CO

by Lisa Blue

Groundwater quality and its suitability for domestic and agricultural use in Tondiar river basin, Tamil Nadu, India

by Elango L

K. Ramesh & L. Elango

Environ Monit Assess
DOI 10.1007/s10661-011-2231-3

Tully Gas Plants

by Russell Thomas

The Tully Gas Plant was the invention of Cornelius Britiffe (C.B.) Tully, it was a hybrid of other gasworks plant and... more The Tully Gas Plant was the invention of Cornelius Britiffe (C.B.) Tully, it was a hybrid of other gasworks plant and considered in practical terms to be a vertical retort fixed over a water gas producer. The Tully Gas plant like water gas produced a mixture of hydrogen and carbon monoxide. The fuel would pass down the vertical retort, undergoing the various stages of carbonization. It would enter the producer in the form of coke which was then gasified as it would be in the usual water gas apparatus. The gases produced would travel out of the Tully gas Plant at the bottom of the producer, they would then be passed through a washbox and scrubber to the relief holder.

The First plant was built at the Swindon Works of the GWR and on completion of its successful operation sufficient orders were received to set up a manufacturing plant in Westmnster under the Name of Bale and Hardy Ltd in 1919. The plants were gradually modified and became known for the “complete gasification of coal”. In 1921 the Company relocated to Newark in Nottinghamshire and became known as the Tully Gas Plants Ltd, they produced these gas plants for gasworks all across the UK and also worldwide, we know that because they liked to advertise where they had built the plant.

The Gas Plants popularity stemmed from relatively cheap capital costs, they did require a very high level of precision to operate them, often greater than that willing to be provided by the operatives, and as a result they are believed to have often fallen out of favour.

A small profile will be produced to cover the subject which will be posted to the website in the coming weeks.

If you have any specific enquiries on this subject please contact Dr Russell Thomas on thomasru@pbworld.com.

CHARACTERIZING HETEROGENEITY IN SEDIMENTARY AQUIFERS FOR REACTIVE TRANSPORT PREDICTION USING SEDIMENTARY ARCHITECTURE

by Indra Kalinovich

Numerical modelling – An emerging tool for sustainable management of aquifers

by Elango L

Geological setting and groundwater chemistry in Chithar river basin Tamil Nadu India

by Elango L

Distribution of Iron, Manganese, Zinc and Atrazine in groundwater in parts of Palar and Cheyyar river basins, South India

by Elango L

Groundwater quality assessment in Tondiar basin, Tamil Nadu, India

by Elango L

Hydrogeochemistry and its relation to groundwater level fluctuation in the Palar and Cheyyar river basins, southern India

by Elango L

Hydrogeochemical reactions in aquifers and its identification by geochemical modelling

by Elango L

Modelling the effect of subsurface barrier on groundwater flow regime

by Elango L

Numerical modelling of groundwater flow in south Chennai coastal aquifer

by Elango L

Mobility of major ions and nutrients in the unsaturated zone during paddy cultivation: a field study and solute transport modelling approach

by Elango L

Seasonal and spatial variation in magnesium and chloride concentration in groundwater of deltaic regions of Kumbakonam, Nannilam and Karaikal, Tamil Nadu

by Elango L

Spatial variation of groundwater quality and inter elemental correlation studies in lower Bhavani river basin, Tamil Nadu, India

by Elango L