Microalgal cultivation using aquaculture wastewater: Integrated biomass generation and nutrient remediation

Ansari, Faiz Ahmad; Singh, Poonam; Guldhe, Abhishek

doi:10.1016/j.algal.2016.11.015

Cited by 252 publications

(117 citation statements)

References 51 publications

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“…Liu et al [31] assessed the potential of five species of microalgae (C. vulgaris, Chlorococcum sp. GD, Parachlorella kessleri TY, Scenedesmus quadricauda, and Scenedesmus obliquus) in the treatment of aquaculture wastewater and found that, after 5 days, nitrates, nitrites, total ammonium, and phosphorus were removed the study conducted by Ansari et al [32], the reduction of ammonium ions achieved with S. obliquus, Chlorella sorokiniana, and Ankistrodesmus falcatus was in the range of 86.45-98.21%, nitrates in the range of 75.76-80.85%, and phosphates in the range of 98.52-100%. the study conducted by Ansari et al [32], the reduction of ammonium ions achieved with S. obliquus, Chlorella sorokiniana, and Ankistrodesmus falcatus was in the range of 86.45-98.21%, nitrates in the range of 75.76-80.85%, and phosphates in the range of 98.52-100%.…”

Section: Removal Of Nitrogen and Phosphorus From Aquaculture Wastewatermentioning

confidence: 97%

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Production of Microalgal Biomass Using Aquaculture Wastewater as Growth Medium

Hawrot-Paw

Koniuszy

Gałczyńska

et al. 2019

Water

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Aquaculture wastewater contains a huge amount of substances that can cause environmental pollution. However, microalgae can absorb these compounds and convert them into useful biomass. In this study, Chlorella minutissima was grown in the wastewater resulting from saline aquaculture. The microalgae were found to effectively utilize nitrogen and phosphorus in the wastewater for its growth. During wastewater treatment, the cell density increased almost fivefold compared to the initial value (OD 680 0.502). Moreover, batch culture resulted in the maximum biomass concentration and productivity of 4.77 g/L and 0.55 g/L/day, respectively. The contents of total nitrogen and total phosphorus in wastewater decreased by 88% and over 99%, respectively. In addition, the content of N-NO 3 was reduced by 88.6%, N-NO 2 by 74.3%, and dissolved orthophosphates (V) by 99%. At the beginning and throughout the experiment, the content of N-NH 4 in wastewater remained below 0.05 mg/L. Furthermore, a high lipid content of 46.4% (w/w) was also obtained from the studied microalgae.

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Section: Removal Of Nitrogen and Phosphorus From Aquaculture Wastewatermentioning

confidence: 97%

“…-97.1%, 94.3-99.8%, 97.9-98.9%, and 90.2-98.9%, respectively. In the study conducted by Ansari et al[32], the reduction of ammonium ions achieved with S. obliquus, Chlorella sorokiniana, and Ankistrodesmus falcatus was in the range of 86.45-98.21%, nitrates in the range of 75.76-80.85%, and phosphates in the range of 98.52-100%.…”

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confidence: 94%

Production of Microalgal Biomass Using Aquaculture Wastewater as Growth Medium

Hawrot-Paw

Koniuszy

Gałczyńska

et al. 2019

Water

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“…However, in this work solids were measured for the sake of simplicity and because in these microalgae systems there is a very good correlation between chlorophyll a and solids (García et al, 1998(García et al, , 2006. Also because microalgae production in culture systems is usually given in biomass weight (Ansari et al, 2017).…”

Section: Biomass Production and Final Effluent Qualitymentioning

confidence: 99%

“…Up to date, most of the studies devoted to phytoremediation of agriculturalrelated wastes by means of microalgae have focused on lab-scale experiments to treat industrial effluents, such as those from dairy farms (Labbé et al, 2017), palm oil mills (Kamyab et al, 2015) or rice mills (Kumar et al, 2016). The treatment of aquaculture effluents and diluted pig slurry treatments were also investigated in different works (Ansari et al, 2017;Lananan et al, 2014;Ledda et al, 2016). The capacity of microalgae to remove pesticides from agriculture run-off was also evaluated by Matamoros et al (2016).…”

Section: Introductionmentioning

confidence: 99%

Nutrient removal from agricultural run-off in demonstrative full scale tubular photobioreactors for microalgae growth

García

Ortíz

Álvarez

et al. 2018

Ecological Engineering

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The objective of this paper is to present the design, construction and operation (during one year) of 3 full scale semi-closed, horizontal tubular photobioreactors (PBR, 11.7 m 3 of volume each) used to remove nutrients of a mixture of agricultural run-off (90%) and treated domestic wastewater (10%). PBRs were located outdoor and have 2 paddlewheels (engines of 0.25 kW) to ensure the movement of the mixed liquor. The microalgal biomass produced in the PBRs was harvested in a static lamella settling tank in which a polyaluminium chloride coagulant is applied. Each PBR treated in average 2.3 m 3 /d, being the actual mean hydraulic retention time 5 d. PBRs were submitted to strong seasonal changes regarding solar radiation and temperature, which had a direct impact in the activity of microalgae and the efficiency of the system. Higher mixed liquor pH values were registered in summer (daily average > 10). These high values were not observed in the effluents because the system was designed to discharge the mixed liquor (effluent) only at the end of night, when pH reached the lowest daily values (around 8.5). Most of the influent and effluent nitrogen content was inorganic (average of 9.0 mg N/L and 3.17 mg N/L, respectively), and in the form of nitrate (62% and 50%, respectively). Average nitrogen removal efficiency was 65%, with values of around 90% in summer, 80% in autumn, 50 % in winter and 60% in spring. Most of the influent and effluent phosphorus content was in the form of ortophosphate. Influent average was 0.62 mg P/L, but with great variations and in a considerable number of samples not detected. Removal efficiency (when influent values were detected) was very high during all the study, usually greater than 95%, and there were not clear seasonal trends for efficiency as observed for TIN. Volumetric biomass production greatly changed between seasons with much lower values in winter (7 g VSS (volatile suspended solids)/m 3 ·d) than in summer (43 g VSS/m 3 ·d). Biomass separation efficiency of the settler was very good in either terms of turbidity and total suspended solids, being most of the time lower than 5 UNT and 15 mg/L, respectively. Overall this study demonstrated the reliable and good effectiveness of microalgae based technologies such as the PBR to remove nutrients at a full scale size.

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“…Cultivation of microalgae in a nutrient-rich effluent as an inexpensive, readily available and cheap medium is expected to overcome the economic dilemma of biodiesel production as well as decrease the environmental problems arising from discharging nutrients into bodies of water. Utilization of wastewater for the cultivation of microalgae has several advantages, including providing an alternative source for the huge amounts water required for growing algae, which presents a supplemental source of nutrients, as well as decreases the load of contaminants, according to Ansari et al (2017). On the other hand, numerous challenges are faced by the cultivation of microalgae in wastewater, such as the unbalanced N/P ratio, the extraordinary biological pollutants and competitors, low biomass and lipid content production, and the low level of effective nutrient elimination (Xin et al, 2010;Min et al, 2011;Zhang et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Cultivation of Oleaginous Microalgae Scenedesmus obliquus on Secondary Treated Municipal Wastewater as Growth Medium for Biodiesel Production

Eida¹,

Darwesh²,

Matter³

2018

J. Ecol. Eng.

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Local single cell microalgae isolated from a wastewater swamp and identified as Scenedesmus obliquus was used to determine its applicability for utilization of domestic wastewater for biomass and lipid production. Secondary treated domestic wastewater with or without mixing of growth medium was used to cultivate S. obliquus for the biomass and lipid production as a renewable feedstock for biodiesel. S. obliquus showed the highest OD when grown in 100% Bold's basal medium (BBM). S. obliquus utilized 95.2% and 78.5% of P and N contents, respectively, when grown in 25% WW+75% BBM mixture and the utilization efficiency of both elements decreased with the increasing wastewater portion in the mixture. Although the BBM displayed the highest dry biomass and lipid production (25.15% of the cell dry biomass). The lowest values were recorded for the uninoculated wastewater, followed by 100% wastewater enriched with S. obliquus. The obtained data revealed that the lipid classes of S. obliquus differs according to the cultivation medium and conditions. The highest percentage of C16-C18 fatty acids (54.76% from total lipids) were recorded in case of algae cultivated in 100% wastewater, followed by 46.96% in case of 100% BBM medium. These results suggest the utilization of mixtures containing a higher portion of secondary treated wastewater, such as 75% WW+25% BBM or 50% WW+50% BBM, could increase the economical production of the lipid-rich microalgae S. obliquus for biodiesel through saving water and nutrients.

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Microalgal cultivation using aquaculture wastewater: Integrated biomass generation and nutrient remediation

Cited by 252 publications

References 51 publications

Production of Microalgal Biomass Using Aquaculture Wastewater as Growth Medium

Production of Microalgal Biomass Using Aquaculture Wastewater as Growth Medium

Nutrient removal from agricultural run-off in demonstrative full scale tubular photobioreactors for microalgae growth

Cultivation of Oleaginous Microalgae Scenedesmus obliquus on Secondary Treated Municipal Wastewater as Growth Medium for Biodiesel Production

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