Phycoremediation of meat processing wastewater by using microalgae scenedesmus sp.
Wastewater produced from Meat Processing Wastewater (MPWW) contains high nutrient loads which can induce eutrophication and cause water quality to deteriorate as it has been claimed that this type of wastewater is difficult to treat due to different types of processed meat and factory activities....
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2018
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/244/1/NUR%20ATIKAH%20AHMAD%20LATIFFI%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/244/2/NUR%20ATIKAH%20AHMAD%20LATIFFI%20WATERMARK.pdf http://eprints.uthm.edu.my/244/3/24%20p%20NUR%20ATIKAH%20AHMAD%20LATIFFI.pdf |
| Summary: | Wastewater produced from Meat Processing Wastewater (MPWW) contains high
nutrient loads which can induce eutrophication and cause water quality to deteriorate
as it has been claimed that this type of wastewater is difficult to treat due to different
types of processed meat and factory activities. The objective of this study was to
analyse the ability of phycoremediation technology in order to assess its potential use
as in treating MPWW and biomass by-product production. Scenedesmus sp., a type
of microalgae, was employed to investigate the effects of a number of factors namely
pH, temperature, light intensity, photo period and reduction in nutrients. The factors
were measured through the growth rate of biomass productivity and removal
efficiency. Subsequently, the design expert method was used to predict the optimal
flocculation efficiency of aluminium sulphate for biomass harvesting. It was found
that Scenedesmus sp. has a higher biomass productivity in the pH range of 7 to 8,
temperatures between 25°C to 40°C, light intensity at 4000 lux and a photoperiod of
12 hours light/12 hours dark. These conditions show a significant influence on
biomass productivity at a concentration of 1×106 cells/mL. Furthermore, the highest
removal of nutrients was up to 77% for ammonia, orthophosphate, total nitrogen and
total phosphorus, followed by chemical oxygen demand at 64%. On the other hand,
the optimum flocculation efficiency of 97.54% was found to be best for biomass
harvesting. These discoveries are significant as they showed that phycoremediation
is suitable and has the potential to be implemented in treating MPWW, specifically
in tropical Malaysia. |
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