Acute and Chronic Toxicity of Acid Mine Drainage to the Activated Sludge Process

2012 ◽  
Vol 31 (1) ◽  
pp. 40-52 ◽  
Author(s):  
Theresa A. Hughes ◽  
N. F. Gray
Keyword(s):  
Acid Mine Drainage ◽  
Activated Sludge ◽  
Chronic Toxicity ◽  
Mine Drainage ◽  
Activated Sludge Process ◽  
Acid Mine ◽  
Acute And Chronic Toxicity

Treatment of acid mine drainage: I. Equilibrium biosorption of zinc and copper on non-viable activated sludge

2000 ◽  
Vol 46 (1) ◽  
pp. 19-28 ◽  
Author(s):  
Vivek Utgikar ◽  
Bor-Yann Chen ◽  
Henry H. Tabak ◽  
Dolloff F. Bishop ◽  
Rakesh Govind
Keyword(s):  
Acid Mine Drainage ◽  
Activated Sludge ◽  
Mine Drainage ◽  
Acid Mine

An ecological risk assessment for a South African acid mine drainage

1999 ◽  
Vol 39 (10-11) ◽  
pp. 297-303 ◽  
Author(s):  
Sebastian Jooste ◽  
Christa Thirion
Keyword(s):  
Acid Mine Drainage ◽  
Life Table ◽  
Chronic Toxicity ◽  
Mine Drainage ◽  
Stream Water ◽  
Leslie Matrix ◽  
Dominant Eigenvalue ◽  
Aquatic Life ◽  
Integrity Assessment ◽  
Acid Mine

Biotic integrity assessment of a stream subject to acid mine drainage (AMD) indicated that a number of the expected taxa were absent. Acute and chronic toxicity assessment of water sampled in a stream subject to AMD impact indicate that even at near neutral pH the metal concentration in the water dominates the toxicity toward Daphnia pulex. Extending the observation period to the death of test cohort in an otherwise standard sub-chronic toxicity test, allowed for generating a life table for the D. pulex. The probability of population extinction was estimated from the statistical characteristics of a bootstrap estimation of the dominant eigenvalue of a Leslie matrix based on the life table. At the current concentration levels of metals, notably manganese and zinc, in the water, a high risk to aquatic life exists. It is suggested that the metal content of the stream water also be addressed in an AMD water treatment plan.

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