Intensified Production of Microalgae and Removal of Nutrient Using a Microalgae Membrane Bioreactor (MMBR)

Choi, Hee‐Jeong

doi:10.1007/s12010-014-1365-5

Cited by 36 publications

(12 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In st to MRT of 3 days, the lowest microalgae productivity occurred at 1.5 days because of erly high F/M ratios. In addition, light may limit the microalgal growth due to self-shading h biomass concentration; therefore, dark respiration of algae occurs in MPBR [17]. This ot proved in this study.…”

Section: Figure 2 Demonstrates That the Variation Of Chlorella Vulgarsupporting

confidence: 69%

“…Moreover, the S/V ratio was smaller than the ratio in previous studies by Gao, et al [13,18]; nevertheless, the higher production was achieved in this study due to the lower biomass concentration ( Table 1). The high concentration of algae could cause the respiration in the dark [17] and the smaller production in these studies.…”

Section: Figure 2 Demonstrates That the Variation Of Chlorella Vulgarmentioning

confidence: 73%

See 1 more Smart Citation

Influence of microalgae retention time on biomass production in membrane photobioreactor using human urine as substrate

Thuan¹,

Thuy²,

Hai³

et al. 2018

VJSTE

View full text Add to dashboard Cite

Human urine is known as the excreta with a high concentration of nitrogen and phosphorus, causing eutrophication in water bodies. In this study, human urine was used to feed microalgae (Chlorella vulgaris) in a membrane photobioreactor (MPBR) at various microalgae retention times (MRTs) and hydraulic retention time (HRT) of 2 days to evaluate its biomass production. The results indicate that MPBR was operated under MRT of 2 to 5 days and HRT of 2 days, which performed the optimum condition with biomass productivity from 146.43±8.52 to 151.93±15.05 mg.l-1 .day. Moreover, the MPBR using the urine as a nutrient source demonstrated the high performance in biomass production and strong growth of microalgae.

show abstract

Section: Figure 2 Demonstrates That the Variation Of Chlorella Vulgarsupporting

confidence: 69%

Section: Figure 2 Demonstrates That the Variation Of Chlorella Vulgarmentioning

confidence: 73%

Influence of microalgae retention time on biomass production in membrane photobioreactor using human urine as substrate

Thuan¹,

Thuy²,

Hai³

et al. 2018

VJSTE

View full text Add to dashboard Cite

show abstract

“…Other studies suggested that nutrients was separated from the wastewater containing colored substances by using coagulants, flocculants, and adsorbents and then added to the microalgae culture medium [30,35,[41][42]. In previous studies on low-strength wastewater treatment using microalgal cells, concentrations of total nitrogen (TN) and total phosphorus (TP) were 25.4-53.2 mg/L and 1.2-12.2 mg/L, respectively [15,23,[45][46][47]. A few studies have dealt with microalgae cultivation as a strategy for treating anaerobically-digested piggery wastewater [4,36].…”

Section: Introductionmentioning

confidence: 99%

Growth and nutrient removal of Chlorella vulgaris in ammonia-reduced raw and anaerobically-digested piggery wastewaters

Kwon

Nam

Kim

et al. 2019

Environmental Engineering Research

View full text Add to dashboard Cite

This study was aimed to investigate the possibility of using raw and anaerobically-digested piggery wastewater as culture media for a green microalga Chlorella vulgaris (C. vulgaris). Due to high concentration of ammonia and dark color, the microalga did not grow well in this wastewater. In order to solve this problem, air stripping and NaOCl-treatment were applied to reduce the concentration of NH3-N and the color intensity from the wastewater. Algal growth was monitored in terms of specific growth rate, biomass productivity, and nutrient removal efficiency. As a result, C. vulgaris grew without any sign of inhibition in air-stripped and 10-folds diluted anaerobically-digested piggery wastewater with enhanced biomass productivity of 0.57 g/L•d and nutrient removal of 98.7-99.8% for NH3-N and 41.0-62.5% for total phosphorus. However, NaOCl-treatment showed no significant effect on growth of C. vulgaris, although dark color was removed greatly. Interestingly, despite that the soluble organic concentration after air stripping was still high, the biomass productivity was 4.4 times higher than BG-11. Moreover, air stripping was identically effective for raw piggery wastewater as for anaerobic digestate. Therefore, it was concluded that air stripping was a very effective method for culturing microalgae and removing nutrients from raw and anaerobically-digested piggery wastewaters.

show abstract

“…Additionally, the microalgal biomass can be used to produce biofuel, fertilizer, etc. (Choi, 2015;Gao et al, 2014Gao et al, , 2015.…”

Section: The Effect Of Hrt On Mpbr Performancementioning

confidence: 99%

Studies on influence of process parameters on simultaneous biodegradation of atrazine and nutrients in aquatic environments by a membrane photobioreactor

Derakhshan

Mahvi

Ehrampoush

et al. 2018

Environmental Research

View full text Add to dashboard Cite

A Lab scale algal-bacterial membrane photobioreactor (MPBR) was designed and operated under 12-h light and 12-h dark conditions with a light intensity of 8000lx, in order to investigate the effects of initial concentrations of atrazine, carbon concentration, and hydraulic retention time on the ability of this photobioreactor in simultaneous removal of atrazine and nutrients in the continuous mode. The removal efficiencies of atrazine (ATZ), chemical oxygen demand (COD), phosphorus (PO-P) and nitrogen (NOx) in optimum condition was more than 95%, 99%, 98% and 97% when the maximum removal rates were 9.5 × 10, 99.231, 11.773 and 7.762mg/L-day, respectively. Results showed that the quality of the effluent was reduced by the increase of atrazine concentration. The outcomes on the hydraulic and toxic shocks indicated that the system has a relatively good resistance to the shocks and can return to the stable conditions. Microalgae showed a great deal of interest and capability in cultivating and attaching to the surface of the membrane and bioreactor, and the total biomass accumulated in the system was greater than 6g/L. The kinetic coefficients of atrazine removal were also studied using various kinetic models. The maximum atrazine removal rate was determined by the modified Stover-Kincannon model. The results approved the ability of the MPBR reactor in wastewater treatment and microalgae cultivation and growth. The decline of atrazine concentration in this system could be attributed to the algal-bacterial symbiosis and co-metabolism process. Accordingly, the MPBR reactor is a practical, simple, economical and therefore suitable process for simultaneous biodegradation of chlorinated organic compounds and nutrients removal from aquatic environments.

show abstract

Intensified Production of Microalgae and Removal of Nutrient Using a Microalgae Membrane Bioreactor (MMBR)

Cited by 36 publications

References 24 publications

Influence of microalgae retention time on biomass production in membrane photobioreactor using human urine as substrate

Influence of microalgae retention time on biomass production in membrane photobioreactor using human urine as substrate

Growth and nutrient removal of Chlorella vulgaris in ammonia-reduced raw and anaerobically-digested piggery wastewaters

Studies on influence of process parameters on simultaneous biodegradation of atrazine and nutrients in aquatic environments by a membrane photobioreactor

Contact Info

Product

Resources

About