Revegetation on a Coal Fine Ash Disposal Site in South Africa

1998 ◽  
Vol 27 (6) ◽  
pp. 1479-1486 ◽  
Author(s):  
L. Van Rensburg ◽  
R. I. De Sousa Correia ◽  
J. Booysen ◽  
M. Ginster
2013 ◽  
Vol 3 (4) ◽  
pp. 623-628 ◽  
Author(s):  
K. Wall ◽  
O. Ive ◽  
J. Bhagwan ◽  
F. Kirwan ◽  
W. Birkholtz ◽  
...  

Having viewed the successful social franchising partnerships pilot programme that serviced sanitation facilities at 400 schools in the Butterworth District of the Eastern Cape of South Africa, the Amathole District Municipality (ADM) expressed interest in exploring how well the partnership model could empty household pit latrines in its jurisdiction. The impact and effectiveness of the model was demonstrated by the emptying, by five franchisees over a period of only six weeks, of the contents of 400 household ventilated improved pit latrines in Govan Mbeki Village, and the safe disposal of their content. The paper describes the methods and results in removal and disposal of faecal sludge. Problems were encountered, and the solutions (technical, institutional and social) are described. Not unexpectedly, the amount of effort involved in this work – including time, training required, equipment required and ingenuity – varied enormously. The main variables included the type of top structure, the nature of the pit contents, whether or not there was broad consistency of type and contents in an area, distances (between pits, from home base to work site, from pits to disposal site, from location of specialized equipment to work site), logistical delays (e.g. non-arrival of equipment) and bureaucratic hold-ups (especially payment delays).


Author(s):  
V. I. Sergeev ◽  
M. L. Kuleshova ◽  
A. Yu. Bychkov ◽  
N. N. Danchenko ◽  
T. G. Shimko

Sorption properties of the soil layer at the base of the ash disposal site of the Sakhalin GRES-2 at the design stage of the facility were determined. Water extracts of the ash from the coal that will be used at the facility were analyzed to identify the potential elements-pollutants able to migrate with atmospheric precipitation through the soil. The model solution was developed based on these data. The soil sorption capacity in relation to the identified pollutants and the level of their potential desorption have been determined in static and dynamic conditions.


2005 ◽  
Vol 57 (2) ◽  
pp. 101-106 ◽  
Author(s):  
Vanja Vukojevic ◽  
Marko Sabovljevic ◽  
S. Jovanovic

Plants that are able to accumulate and tolerate extraordinarily high concentrations of heavy metals (hyperaccumulators) can be used for phytoremediation (removal of contaminants from soils) or phytomining (growing a crop of plants to harvest the metals). Two moss species, Bryum capillare Hedw. and Ceratodon purpureus Hedw., were tested as potential phytoremedies under in vivo conditions on a coal ash disposal site in the surroundings of Obrenovac (NW Serbia). The content of various heavy metals (iron, manganese zinc, lead, nickel, cadmium, and copper) in the mosses and substrata were investigated over a period of three years. Iron and zinc were found to have the highest concentration in the mosses.


2019 ◽  
Vol 230 (11) ◽  
Author(s):  
Bartłomiej Woś ◽  
Katarzyna Sroka ◽  
Agnieszka Józefowska ◽  
Marcin Pietrzykowski

Abstract Combustion of fossil fuels including coal is one of the sources of mercury pollution. Combustion waste from fly ash disposal sites poses a problem for the environment and constitutes a potential source of Hg, thus phytostabilisation is a crucial goal in the mitigation of fossil fuel impact. The paper presents mercury (Hg) concentration in technosols from combustion waste and in individual biomass components (fine roots, bark, stem wood and leaves) of alder species (black, gray and green alder) introduced as part of a long-term experiment to develop a method of phytostabilisation and afforestation of a lignite combustion disposal site. Mercury content in the combustion waste was elevated compared to the data for natural soils from uncontaminated forest areas, however, it did not exceed the amounts considered to be toxic. Hg content in technosols was related to clay and silt fraction content and phosphorus content. Mercury in the alder biomass accumulated mainly in the underground part, especially in the fine roots and displayed a positive correlation with acid and alkaline phosphatase and sulfur content, with no differences in the accumulation of Hg between the alder species. The obtained results indicate that the fine roots are the frontier of Hg biosorption in developed alder systems on combustion waste disposal sites.


2010 ◽  
Vol 181 (1-3) ◽  
pp. 74-81 ◽  
Author(s):  
Kangjoo Kim ◽  
Seok-Hwi Kim ◽  
Sung-Min Park ◽  
Jinsam Kim ◽  
Mansik Choi

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