Isolation of an indigenous Chlorella vulgaris from swine wastewater and characterization of its nutrient removal ability in undiluted sewage

Optimization of Cultivation Condition of Newly Isolated Strain Chlorella Sorokiniana pa.91 for CO2 Bio-Fixation and Nutrients Removal From Real Municipal Wastewater: Impact of Temperature and Light Intensity

“…This might be related to the existence of the symbiotic bacteria such as Verrucomicrobium, Proteobacteria and Frimicutes in real municipal wastewater (RMWW) that can be favourable to microalgae growth (Tandon and Jin, 2017;Toyama et al, 2018).The lower biomass concentration yield in the case of SWW (COD = 403 mgL -1 ) might be attributed the low N/P rate (~ 1.8), high COD concentration (~ 403 mgL -1 ) and turbidity which negatively affect the microalgae growth (Wen et al, 2017).…”

Microalgae biomass from swine wastewater and its conversion to bioenergy

“…High concentrations of organic matter, nutrients and toxic contaminants in SW have raised many concerns over their adverse effects on the environment and people's health (Cheng et al, 2018b). Various technologies have been developed for removing these pollutants from SW (Cheng et al, 2018b;Wen et al, 2017). Compared with conventional activated sludge and /or anaerobic treatment processes of SW, microalgae-based wastewater treatment systems have advantages of low energy requirements, little sludge formation, reduction of greenhouse emissions and productive use of wastewater.…”

“…Several previous studies have confirmed that the cultivation of microalgae in SW is efficient for nutrients removal, and the maximum removal efficiency of nutrients and ranges of COD removal by different species of microalgae are depicted in Fig.2(a, b) (Abou-Shanab et al, 2013; Deng et al, 2018; Franchino et al, 2016; Luo et al, 2016; Wang et al, 2015; Wen et al, 2017; Zhu et al, 2013b).Under different cultivation conditions, different species of microalgae demonstrated a wide range of nutrients and COD removal efficiencies, with >90% NH4-N, 12.5-90% TN, 28-97% TP and 21-80% COD. NH4-N has been reported as the main form of inorganic nitrogen in SW(Wen et al, 2017). The efficiency of removing NH4-N by microalgae is relatively higher than the TN removal efficiency.…”

“…For instance, a suitable dilution rate of SW is necessary for the effective removal of NH4-N and TP. For the culture media with high initial nutrients, the amount of NH4-N, TN and TP taken up by the microalgae rose when dilution of wastewater was greater (Franchino et al, 2016; Ji et al, 2013b) Wen et al (2017). stated that the highest removal ratios of COD (58.39%), TN and TP (>90%) were achieved in 40% diluted SW, which proved to be higher than that in 20%, 60%, 80% diluted and undiluted wastewater.Additionally, the microalgae cultivation condition affected the nutrients removal efficiency significantly.…”

Comparison of Swine Wastewater Treatment by Microalgae and Heterotrophic Nitrifiers: Focusing on Nitrogen Removal Mechanism Revealed by Microbiological Correlation Analysis

“…Microalgae could play an important role in the high-strength swine wastewater remediation evidenced by a high member of published works. Microalgae species, especially Chlorella, are highly capable of absorbing nitrogen and phosphorus from swine wastewater (Ledda et al, 2015;Wang et al, 2015;Wen et al, 2017). The study done by Wen et al found that the removal e ciencies of TN and TP can reach 90.51 % and 91.54 %, respectively, by using Chlorella vulgaris isolated from swine wastewater to treat undiluted swine slurry with a relatively low nutrient pro le ( Chlorella strain isolated from a fecal storage tank to purify swine manure digestate.…”