Browsing by Author "Gray, Nicholas Frederick"
Now showing items 1-20 of 32
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Cronebane Halfpenny Tokens: A Quick Guide To Counterfeit Coins
Gray, Nicholas Frederick (Tigroney PressIE, 2017-06-01) -
Driving Sustainably : A guide to reducing your carbon footprint
Gray, Nicholas Frederick (Tigroney PressIE, 2018-11-12)On average travel represents a staggering 56% of our primary (personal) footprint in Ireland. Car ownership is rapidly increasing throughout the EU reaching an estimated 252 million in 2015/6. This is equivalent of 600 ... -
THE ENVIRONMENTAL IMPACT OF ACID MINE DRAINAGE
Gray, Nicholas Frederick; Sullivan, Monica (Tigroney PressIE, 2017)This review examine the action of acid mine drainage (AMD), which is a multifactor pollutant, on surface waters. It affects aquatic ecosystems via a number of direct and indirect pathways. Major impact areas are coastal ... -
ENVIRONMENTAL IMPACT OF ACID MINE DRAINAGE ON THE AVOCA RIVER: Acute Toxicity Experiments in the Field Using Macro-invertebrates
Byrne, Colin; Gray, Nicholas Frederick (Tigroney PressIE, 2017-06-08)Field toxicity experiments were conducted in the Avoca River (Ireland) during August and September 1994 in order to evaluate the toxicity of acid mine drainage (AMD) to a number of selected macro-invertebrate species. The ... -
ENVIRONMENTAL IMPACT OF ACID MINE DRAINAGE ON THE AVOCA RIVER: Metal Fluxes in Water and Sediment. Part III. Metals in Water and Suspended Particulate Matter.
Herr, Claudia; Gray, Nicholas Frederick (Tigroney PressIE, 2017-06-08)Water and suspended particulate matter (SPM) was collected at weekly intervals during low flow conditions from the Avoca River (May and August, 1994). The total concentration of Zn, Cu, Cd and Fe was measured in both the ... -
ENVIRONMENTAL IMPACT OF ACID MINE DRAINAGE ON THE RIVER AVOCA: Metal Fluxes in water and sediment. Part II. Metal Contamination of Riverine Sediments
Herr, Claudia; Gray, Nicholas Frederick (Tigroney PressIE, 2017-06-01)The discharge of acid mine drainage (AMD) from sulphur bearing mineral deposits causes iron to precipitate as hydroxides and the formation of ochreous deposits on the substrate of the receiving river system. The sediments ... -
FIELD ASSESSMENT OF ACID MINE DRAINAGE CONTAMINATION IN SURFACE AND GROUND WATERS
Gray, Nicholas Frederick (Tigroney PressIE, 2017-06-08)Both sulphate and conductivity are excellent indicators of AMD contamination. This is due to sulphate being an end product of pyrite oxidation. Unlike pH, they are both extremely sensitive to AMD even where large dilutions ... -
Freshwater Hydrobiology Lecture 1: EU Water Policy and Regulation
Gray, Nicholas Frederick (Tigroney PressIE, 2017-11-11)This is the first lecture in the course Freshwater Hydrobiology. It is an introductory lecture which introduces a number of basic concepts that underpin the area. This is a PowerPoint lecture which is free to use and ... -
Freshwater Hydrobiology Lecture 2: Factors Determining the Distribution of Freshwater Biota: 1.
Gray, Nicholas Frederick (Tigroney PressIE, 2017-11-14)This is the second lecture in the course Freshwater Hydrobiology which explores the effects of physical factors on the creation of habitats and their associated communities in freshwater. This is a PowerPoint lecture which ... -
Freshwater Hydrobiology Lecture 3: Factors Determining the Distribution of Freshwater Biota: 2.
Gray, Nicholas Frederick (Tigroney PressIE, 2017-11-14)This is the third lecture in the course Freshwater Hydrobiology which explores the effects of chemical factors on the maintenance of habitats and their associated communities in freshwater. This is a PowerPoint lecture ... -
How to Stop Humming in 28 Days: A Simple Stepped Programme.
Gray, Nicholas Frederick (Tigroney PressIE, 2017-03-07) -
INFLUENCE OF POSSIBLE SECONDARY SULPHATE MINERALIZATION ON THE IMPACT OF ACID MINE DRAINAGE TO SURFACE WATERS
Gray, Nicholas Frederick (Tigroney PressIE, 2017-06-08)Acid mine drainage (AMD) is a major environmental pollutant of both surface and ground waters. Intensive sampling of drainage from mine adits has revealed a seasonal variation in the Zn:Cu ratio. This is linked to secondary ... -
AN OBJECTIVE INDEX FOR THE ASSESSMENT OF THE CONTAMINATION OF SURFACE AND GROUND WATERS BY ACID MINE DRAINAGE
Gray, Nicholas Frederick (Tigroney PressIE, 2017-08)Temporal and spatial comparisons of acid mine drainage (AMD) contaminated waters are difficult due to the complex physico-chemical nature of the pollutant. An objective index has been developed and evaluated for assessment ... -
PROCEDURE FOR THE ESTIMATION OF THE IMPACT OF ACID MINE DRAINAGE TO SURFACE WATERS AND ITS MANAGEMENT
Gray, Nicholas Frederick (Tigroney PressIE, 2017-08)The rehabilitation of a mine producing acid mine drainage (AMD) involves four discrete steps. These are site characterization, the development of an AMD water quality management protocol, a remediation strategy and finally ... -
A SUBSTRATE CLASSIFICATION INDEX FOR THE VISUAL ASSESSMENT OF THE IMPACT OF ACID MINE DRAINAGE IN LOTIC SYSTEMS
Gray, Nicholas Frederick (Tigroney PressIE, 2017-08)The impact of acid mine drainage (AMD) on lotic receiving waters is complex and difficult to assess. While low pH, elevated sulphate and metals all characterize AMD these vary both spatially and temporally, with high ... -
A SURVEY OF SOIL AND VEGETATION IN THE AREA SURROUNDING THE AVOCA MINES, Co. WICKLOW
O'Neill, Cliona; Herr, Claudia; Gray, Nicholas Frederick (Tigroney PressIE, 2017-05-24)Metal Content was determined in soil and vegetation around the eastern zone of the disused copper and sulphide mines at Avoca in Co. Wicklow (south-east Ireland). A 250 x 250 m grid survey was conducted covering a total ... -
WATER QUALITY OF THE SURFACE WATERS AT AVOCA MINES AND THE AVOCA RIVER: Interim Report May to October, 1994.
Gray, Nicholas Frederick (Tigroney PressIE, 2017-06-08)During this interim period of six months from May to October, 1994, 42 separate surface water sites were monitored. Surface waters were classified into nine discrete source categories. These are 1. Springs and seepage ... -
Water Technology Lecture 10: Household and small treatment systems
Gray, Nicholas Frederick (Tigroney PressIE, 2017-11-06)This is the tenth lecture in the course Water Technology dealing with household and small-scale treatment systems. This is a PowerPoint lecture which is free to use and modify. It was designed to be used in conjunction ... -
Water Technology Lecture 11: Wastewater Treatment, Sludge treatment
Gray, Nicholas Frederick (Tigroney PressIE, 2017-11-06)This is the eleventh lecture in the course Water Technology dealing with sludge treatment systems. This is a PowerPoint lecture which is free to use and modify. It was designed to be used in conjunction with the course ... -
Water Technology Lecture 12: Wastewater Treatment, Sludge Disposal
Gray, Nicholas Frederick (Tigroney PressIE, 2017-11-06)This is the twelfth lecture in the course Water Technology dealing with sludge disposal. This is a PowerPoint lecture which is free to use and modify. It was designed to be used in conjunction with the course text Gray, ...