Issue: Số 21 - Tháng 10 - 2023Hóa học - Công nghệ thực phẩm
A study on the impact of salinity on algae growth and nutrient recovery in a revolving algae biofilm reactor
Published: July 22, 2026
Abstract
This study created and operated a model named the Revolving Algae Biofilm reactor (RAB). The study investigated the adaptability of Chlorella vulgaris algae at different salinity levels, such as 0, 5, 10, 15, and 20‰, as well as the recovery and effectiveness of nutrients. The study finds that as the salinity level gradually increases, algal biomass is clearly affected by a decrease in growth ability. However, the study’s results also reveal that salinity in the range of 0 - 10‰ facilitates the removal of nitrogen, phosphorus, and organic matter without significantly affecting the microorganism. RAB shows that this is a potential wastewater treatment biotechnology by applying green algae, helping to ensure wastewater quality, reduce environmental pollution, and limit carbon emissions, in line with the trend toward sustainable development.
Figler, A., et al. (2019). Salt Tolerance and Desalination Abilities of Nine Common Green Microalgae Isolates. Water, 11(12), 2527.
2.
Gerardi, M.H. (2002). Nitrification and denitrification in the activated sludge process. USA: John Wiley & Sons.
3.
Gross, M., Henry, W., Michael, C., Wen, Z. (2013). Development of a rotating algal biofilm growth system for attached microalgae growth with in situ biomass harvest. Bioresource Technology, 150, 195-201.
4.
Haris, N., et al. (2022). Effect of different salinity on the growth performance and proximate composition of isolated indigenous microalgae species. Aquaculture Reports, 22, 100925.
5.
Nguyen, T.-T.-D., et al. (2022). Co-culture of microalgae-activated sludge in sequencing batch photobioreactor systems: Effects of natural and artificial lighting on wastewater treatment. Bioresource Technology, 343, 126091.
6.
Ota, S., et al. (2016). Deciphering the relationship among phosphate dynamics, electron-dense body and lipid accumulation in the green alga Parachlorella kessleri. Scientific Reports, 6(1), 25731.
7.
Procházková, G., Brányiková, I., Zachleder, V., Brányik, T. (2014). Effect of nutrient supply status on biomass composition of eukaryotic green microalgae. Journal of Applied Phycology, 26(3), 1359-1377.
8.
Yun, C.-J., Hwang, K.-O., Han, S.-S., Ri, H.-G. (2019). The effect of salinity stress on the biofuel production potential of freshwater microalgae Chlorella vulgaris YH703. Biomass and Bioenergy, 127, 105277.
9.
Zhu, S., Qin, L., Feng, P., Shang, C., Wang, Z., Yuan, Z. (2019). Treatment of low C/N ratio wastewater and biomass production using co-culture of Chlorella vulgaris and activated sludge in a batch photobioreactor. Bioresource Technology, 274, 313-320.