ABSTRACT
Clarias
gariepinus fingerlings of mean weight 34.0g± 0.6g and mean length of 23.5cm ±
2.0cm S.E respectively were exposed to 0, 20ppm, 40ppm, 60ppm, 50ppm and 1
00ppm of photographic processing waste during a static bioassay for 96hrs (4
days). The 96hrs LC5O of photographic waste to fingerlings of C.gariepinus was
36.31 ppm with upper and lower limits of 0.125 and 19.5 respectively. The
threshold value (safe level) was calculated as 19.95ppm. Six samples of
photographic effluent; colour developer, stabilizer, bleach, bleach fixer was
collected from one of the photographic studios located at the Eastern sector of
Umuahia Metropolis. The samples were thereafter analysed for four heavy metals;
Silver, Iron, Zinc and Cadmium using the Atomic Absorption Spectrometer (UNICAM
939). Some portion of the waste was also used to carry out the bioassay test on
the experimental fish. Experimental set up consisted of 18 plastic bowls each
of 20 litre capacity and then placed appropriately in its place on the wooden
stand. Exploratory test was carried out to obtain a general idea of the range
of concentration suitable for the full-scale bioassay test before commencement
of the actual experiment. This was carried out by mixing the six different
effluents to obtain one effluent after which Iml of the mixed eftluent was
introduced into each of 3 different breakers containing 9ml, 99ml and 999ml of
bore-hole water respectively· to produce 3 different toxicant dilutions.
Thereafter a single experimental fish was introduced into each of these 3
dilutions of the toxicant to obtain concentration that will not kill the fish
in less than 30 minutes. The concentration that did not kill fish in less than
30 minutes was used to prepare the test media used for the actual experiment.
The gill and blood of experimental fish were collected from each experimental
tub during the investigation and analysed for uptake of Silver, Zinc, Iron,
Cadmium ion and Haematological parameters; PCV, HB,WBC and RBC respectively.
Physico-chemical parameters of the experimental water was also monitored during
the period of investigation. Experiment was replicated twice. Number of
photographic studios in eastern sector was enumerated and the quantity of waste
generated by these studios estimated. The gills of the exposed fish analysed
showed increase in ion uptake of zinc, Iron, and silver for the duration of the
experiment. For the haematological studies Clarias gariepinus" were
exposed for 96hrs to concentrations of 0,20, 40, 60, 80 and l0Oppm of
photographic waste. There was fluctuation in the level of PVC, HB, WBC and RBC.
The levels of these haematological parameters increased and decreased in
different days and at different concentrations. Estimated quantity of about
136.848-193.938 litres of waste was found to be generated by these studios on
monthly basis. This observation is of interest hence the safe level has been recorded
in this work.
MICHAEL, U (2023). Effect Of Photographic Processing Studio Effluent On Clarias Gariepinus Fingerlings. Mouau.afribary.org: Retrieved Nov 14, 2024, from https://repository.mouau.edu.ng/work/view/effect-of-photographic-processing-studio-effluent-on-clarias-gariepinus-fingerlings-7-2
UNIVERSITY, MICHAEL. "Effect Of Photographic Processing Studio Effluent On Clarias Gariepinus Fingerlings" Mouau.afribary.org. Mouau.afribary.org, 07 Jul. 2023, https://repository.mouau.edu.ng/work/view/effect-of-photographic-processing-studio-effluent-on-clarias-gariepinus-fingerlings-7-2. Accessed 14 Nov. 2024.
UNIVERSITY, MICHAEL. "Effect Of Photographic Processing Studio Effluent On Clarias Gariepinus Fingerlings". Mouau.afribary.org, Mouau.afribary.org, 07 Jul. 2023. Web. 14 Nov. 2024. < https://repository.mouau.edu.ng/work/view/effect-of-photographic-processing-studio-effluent-on-clarias-gariepinus-fingerlings-7-2 >.
UNIVERSITY, MICHAEL. "Effect Of Photographic Processing Studio Effluent On Clarias Gariepinus Fingerlings" Mouau.afribary.org (2023). Accessed 14 Nov. 2024. https://repository.mouau.edu.ng/work/view/effect-of-photographic-processing-studio-effluent-on-clarias-gariepinus-fingerlings-7-2