Preliminary Assessment of Growth Rates on Different Concentration of Microalgae Scenedesmus sp. in Industrial Meat Food Processing Wastewater

Latiffi, Nur Atikah Ahmad; Mohamed, Radin Maya Saphira Radin; Apandi, Najeeha Mohd; Tajuddin, Ramlah Mohd

doi:10.1051/matecconf/201710306010

Cited by 10 publications

(6 citation statements)

References 20 publications

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“…The growth rate also showed a similar trend with regard to cell density, but generally the algal growth per day was high (1.21 × 10 6 cell/mL at 1 day) [52,53]. The growth rate also showed a similar trend with regard to cell density, but generally the algal growth per day was high (1.21 × 10 6 cell/mL at 1 day) [52,53].…”

Section: Ecotoxicity Testsmentioning

confidence: 61%

Ecotoxicological Effect of Aged Wood Leachates to Aquatic Organisms

Sackey

Mocová

Kočí

2020

Water

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Wood is an important natural resource used for various human activities. Toxicity of wood leachate in aquatic organisms has been previously established, but whether storage over time has an impact on the quality of leachate has not been assessed. Hence, this research seeks to assess the toxicity of aged wood leachate in aquatic organisms. Five fresh wood samples were randomly selected from the Oboyow forest reserve in the eastern region of Ghana: Mahogany (Khaya ivorensis), Cedrela (Cedrela odorata), Emire (Terminalia ivorensis), Wawa (Triplochiton scleroxylon), and Ceiba (Ceiba pendandra) to assess their toxicity to aquatic organisms. Algal (Desmodesmus subspicatus) duckweed (Lemna minor) and daphnia (Daphnia magna) were carried out using exposures to concentrations of 20%, 30%, 45%, 67%, and 100% v/v of wood leachate with control media, because they represented various concentration rate levels of wood leachate toxicity in the test organisms. The toxicity of the various wood leachates might be due to high levels of biochemical oxygen demand (BOD), chemical oxygen demand (COD), and total organic carbon (TOC), i.e., metals and phenols. The % IC50 of the various wood leachate ranged from 21.51–66.77% with mahogany exhibiting the highest toxicity and wawa the lowest. It was also observed that toxicity of wood leachates decreased as the wood leachate aged. The % IC50 showed both confirmed and potential toxicity among the various wood leachates.

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Section: Ecotoxicity Testsmentioning

confidence: 61%

Ecotoxicological Effect of Aged Wood Leachates to Aquatic Organisms

Sackey

Mocová

Kočí

2020

Water

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“…While KP SE has a relatively higher nutrient content, it did not influence the SGR of microalgae to the maximum levels attained in SB SE, suggesting that there are some species dependence and variability. Latiffi et al (2017) noted that too many microalgal populations might cause suffocation of the nutrients available in wastewater to support the production of microalgae, resulting in no increase in total biomass concentrations over time. Moreover, Shuler (2002) also noted that a high concentration of microalgae in the medium could inhibit growth rates simply due to population concentration.…”

Section: Discussionmentioning

confidence: 99%

Enhancement of targeted microalgae species growth using aquaculture sludge extracts

Arumugam

Ahmad

Yaacob

et al. 2020

Heliyon

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Natural growth-promoting nutrients extracted from aquaculture sludge waste can be used to maximise microalgal growth. This study identified the influence of aquaculture sludge extract (SE) on four microalgae species. Conway or Bold's Basal Media (BBM) was supplemented with SE collected from a Sabak Bernam shrimp pond (SB) and Kota Puteri fish pond (KP), and tested using a novel microplate-incubation technique. Five different autoclave extraction treatment parameters were assessed for both collected SE, i.e., 1-h at 105 °C, 2-h at 105 °C, 1-h at 121 °C, 2-h at 121 °C, and 24-h at room temperature (natural extraction). Microalgae culture in the microplates containing control (media) and enriched (media + SE) samples were incubated for nine days, at 25 °C with the light intensity of 33.75 μmol photons m −2 s −1 at 12-h light/dark cycle. The total dissolved nitrogen (TDN) and total dissolved phosphorus (TDP) in KP SE were 44.0–82.0 mg L −1 and 0.96–8.60 mg L −1 . TDN (8.0%–515.0%) and TDP (105%–186 %) were relatively higher in KP SE compared to SB SE. The growth of microalgae species Nannochloropsis ocenica showed significant differences ( p < 0.05) between the five extraction treatments from SB and the control. However, Chlorella vulgaris , Neochloris conjuncta , and Nephroclamys subsolitaria showed no significant differences ( p > 0.05) in SB SE. N. ocenica , C. vulgaris , and N. conjuncta showed significant differences ( p < 0.05) between five extraction treatments from KP and the control while N. subsolitaria showed no significant difference ( p > 0.05). The specific growth rate (SGR) in the exponential phase of all microalgae species were relatively higher in SB SE compared to KP SE. While the organic matter content of KP SE was relatively higher, there were no significant differences in microalgae growth compared to SB SE. Nonetheless, modified SE did influence microalgae growth compared to the control. This study shows that modified SE could be used as enrichment media for microalgae cultivation.

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“…Al-Shatri et al (2014) produced the strain of Scenedesmus dimorphus in BBM medium and the final cell number was found to be (2.5x10 4 cells/mL), the specific growth rate was (0.104 µ/day -1 ). Latiffi et al (2017) in their study on Scenedesmus sp., the cell number (1x10 4 cells/mL), specific growth rate (0.412 µ/day -1 ) and doubling time (1.680 day -1 ) was found. In this study, as in cell density, the highest dry weight was obtained from cultivation of ScnGP strain in Bold Wynne medium (0.212±0.032 g/mL).…”

Section: Discussionmentioning

confidence: 99%

Scenedesmus obliquus Suşlarının Farklı Besin Ortamlarındaki Büyüme Kinetiği

Duygu

2019

Journal of Limnology and Freshwater Fisheries Research

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In this study, the effects of different media and natural mineral waters on the growth dynamics of Scenedesmus obliquus (Turpin) Kützing were investigated. S. obliquus strains were isolated from various freshwater wells and pools in Ankara, Turkey. In the production of three S. obliquus strains, both four culture medium and four natural mineral waters were used. Cell density, dry weight, specific growth rates, duplication time and chlorophyll-a of the cultures were calculated. The results showed that the different culture media and natural mineral waters significantly affected the final cell density, biomass and growth rates of strains. In three isolates, there was a significant difference in ScnGP strain in terms of cell density, biomass weight and specific growth rate compared to others. Cell density (7.4x10 4 ±1.3x10 3 cells/mL), biomass amount (0.212±0.032g/mL), specific growth rate (0.024 h-1) and chlorophyll-a (1.71±0.22µg/mL) of ScnGP grown in Bold Wynne medium were significantly (P<0.05) higher than that of grown in all other treatments. It has been determined that the results obtained from natural mineral waters were as good as the results obtained from culture media. It can be thought that various chemical compounds and reproductive factors can be added to increase the production within the natural mineral waters.

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Preliminary Assessment of Growth Rates on Different Concentration of Microalgae Scenedesmus sp. in Industrial Meat Food Processing Wastewater

Cited by 10 publications

References 20 publications

Ecotoxicological Effect of Aged Wood Leachates to Aquatic Organisms

Ecotoxicological Effect of Aged Wood Leachates to Aquatic Organisms

Enhancement of targeted microalgae species growth using aquaculture sludge extracts

Scenedesmus obliquus Suşlarının Farklı Besin Ortamlarındaki Büyüme Kinetiği

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