Use of duckweed, bentonite and acid to improve water quality of effluent discharge from abattoirs

Goopy, JP, Murray, PJ, Lisle, AT and Al Jassim, RAM (2004) Use of duckweed, bentonite and acid to improve water quality of effluent discharge from abattoirs. Asian-australasian Journal of Animal Sciences, 17 8: 1168-1176.

Author Goopy, JP
Murray, PJ
Lisle, AT
Al Jassim, RAM
Title Use of duckweed, bentonite and acid to improve water quality of effluent discharge from abattoirs
Journal name Asian-australasian Journal of Animal Sciences   Check publisher's open access policy
ISSN 1011-2367
Publication date 2004
Sub-type Article (original research)
Volume 17
Issue 8
Start page 1168
End page 1176
Total pages 9
Place of publication Suwon
Publisher Asian-australasian Assoc Animal Production Societies
Collection year 2004
Language eng
Subject CX
291102 Bio-remediation
671706 Agricultural chemicals
Abstract Intensive animal industries create large volumes of nutrient rich effluent, which, if untreated, has the potential for substantial environmental degradation. Aquatic plants in aerobic lagoon systems have the potential to achieve inexpensive and efficient remediation of effluent, and to recover valuable nutrients that would otherwise be lost. Members of the family Lemnaceae (duckweeds) are widely used in lagoon systems, but despite their widespread use in the cleansing of sewage, only limited research has been conducted into their growth in highly eutrophic media, and little has been done to systematically distinguish between different types of media. This study examined the growth characteristics of duckweed in abattoir effluent, and explored possible ways of ameliorating the inhibitory factors to growth on this medium. A series of pot trials was conducted to test the tolerance of duckweed to abattoir effluent partially remediated by a sojourn in anaerobic fermentation ponds, both in its unmodified form, and after the addition of acid to manipulate pH, and the addition of bentonite. Unmodified abattoir effluent was highly toxic to duckweed, although duckweed remained viable and grew sub optimally in media with total ammonia nitrogen (TAN) concentrations of up to 100 mg/l. Duckweed also grew vigorously in effluent diluted 1:4 v/v, containing 56 mg TAN/L and also modified by addition of acid to decrease pH to 7 and by adding bentonite (0.5%).
Keyword Agriculture, Dairy & Animal Science
Abattoir Effluent
Ammonium
Bentonite
Duckweed
Lemnaceae
Swine Lagoon Effluent
Waste-water
Ammonia Toxicity
Common Duckweed
Animal Feed
Renovation
Nitrogen
Protein
Removal
Q-Index Code CX

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Agriculture and Food Sciences
 
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Created: Wed, 15 Aug 2007, 05:07:12 EST