A critical review on designs and applications of microalgae-based photobioreactors for pollutants treatment

Vo, Hoang Nhat Phong; Ngo, Huu Hao; Guo, Wenshan; Nguyen, Thi Minh Hong; Liu, Yiwen; Liu, Yi; Nguyen, Dinh Duc; Chang, Soon Woong

doi:10.1016/j.scitotenv.2018.09.282

Cited by 143 publications

(43 citation statements)

References 146 publications

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“…The number of pollutants can be removed such as nutrients, pathogens, and heavy metals through uptake of the nutrients, raising pH and dissolved oxygen, and acting as an effective biosorbent, respectively . Phong Vo et al presented a comprehensive overview of the pollutant removal through microalgae photobioreactors. Flat plate photobioreactors contain the potential to produce the highest biomass yield than the rest of them, and a wide range of contaminants could be treated including heavy metals and pharmaceutical and personal care products.…”

Section: Introductionmentioning

confidence: 99%

Carbon conversion and stabilisation of date palm and high rate algal pond (microalgae) biomass through slow pyrolysis

et al. 2019

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Summary The processing of waste through pyrolysis technology is gaining momentum worldwide and is considered to be a green technology to reduce CO2 emissions. This study is devoted to analysing the lignocellulosic biomass (date palm) and wastewater‐derived microalgae and the carbon‐rich char produced between temperature range (400°C‐600°C) from these biomass types. The properties of microalgae char showed that significant variation with date palm char exhibited high heating values (24‐28 MJ/kg), low ash content (11%‐16%), and high energy yield (48%‐42%). Algal biomass char showed considerably high nitrogen content (6%‐7%) as compared with date palm char (<1%), lower stability, and more significant influence on the price with respect to treatment temperature. Quaternary, pyrrolic, and pyridinic nitrogen species were found on the surface of the microalgae char, whereas no nitrogen species detected on date palm char due to low nitrogen content. The activation energy was also noted to be high for algal char during pyrolysis and combustion process. It can be concluded that date palm char is suitable for energy applications, whereas, algal char can be used for soil amendment, wastewater treatment, and applications requiring nitrogen‐doped char.

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Section: Introductionmentioning

confidence: 99%

Carbon conversion and stabilisation of date palm and high rate algal pond (microalgae) biomass through slow pyrolysis

et al. 2019

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“…Still, it remains unknown if the reduction of toxicity occurred in parallel with the decrease of acetaminophen concentration since these results refer just to the end of microalgae batch cultivation. Indeed, as highlighted by Vo et al [9], different intermediates and/or end products may be formed depending on the degradation mechanism and pathway. In this sense, Zhou et al [38] found that the maximum accumulated concentration of 1,4-benzoquinone, which is the main TP formed during the microbial transformation of acetaminophen in natural waters, occurred at different reaction times among the different water samples.…”

Section: Discussionmentioning

confidence: 99%

Acetaminophen Removal from Water by Microalgae and Effluent Toxicity Assessment by the Zebrafish Embryo Bioassay

Escapa

Coimbra

Neuparth

et al. 2019

Water

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In this work, zebrafish embryo bioassays were performed to assess the efficiency of microalgae in the removal of acetaminophen from water. Chlorella sorokiniana (CS), Chlorella vulgaris (CV) and Scenedesmus obliquus (SO) were the strains used for water treatment. Toxic effects on zebrafish embryo caused by effluents from microalgae treatment were compared with those observed under exposure to experimental solutions with known concentrations of acetaminophen. The three microalgae strains allowed for the reduction of acetaminophen concentration and its toxic effects, but CS was the most efficient one. At the end of the batch culture, a 67% removal was provided by CS with a reduction of 62% in the total abnormalities on the exposed zebrafish embryo. On the other hand, toxic effects observed under exposure to effluents treated by microalgae were alike to those determined for acetaminophen experimental solutions with equivalent concentration. Thus, it may be inferred that microalgae biodegradation of acetaminophen did not involve an increased toxicity for zebrafish embryo.

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“…However, the aeration design of this photobioreactor causes stress damage to the microalgae cells [31]. Numerous innovative design has been implemented to further improve the efficiency of the flat-plate photobioreactor, such as twin layer flat-plate and plastic sheets photobioreactors [32]. Commercial usage of flat-plate photobioreactor has been used to produce astaxanthin by Algamo company located at Krkonoše, Czech Republic.…”

Section: Photobioreactormentioning

confidence: 99%

A review on microalgae cultivation and harvesting, and their biomass extraction processing using ionic liquids

et al. 2020

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The richness of high-value bio-compounds derived from microalgae has made microalgae a promising and sustainable source of useful product. The present work starts with a review on the usage of open pond and photobioreactor in culturing various microalgae strains, followed by an in-depth evaluation on the common harvesting techniques used to collect microalgae from culture medium. The harvesting methods discussed include filtration, centrifugation, flocculation, and flotation. Additionally, the advanced extraction technologies using ionic liquids as extractive solvents applied to extract high-value bio-compounds such as lipids, carbohydrates, proteins, and other bioactive compounds from microalgae biomass are summarized and discussed. However, more work needs to be done to fully utilize the potential of microalgae biomass for the application in large-scale production of biofuels, food additives, and nutritive supplements.

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A critical review on designs and applications of microalgae-based photobioreactors for pollutants treatment

Cited by 143 publications

References 146 publications

Carbon conversion and stabilisation of date palm and high rate algal pond (microalgae) biomass through slow pyrolysis

Carbon conversion and stabilisation of date palm and high rate algal pond (microalgae) biomass through slow pyrolysis

Acetaminophen Removal from Water by Microalgae and Effluent Toxicity Assessment by the Zebrafish Embryo Bioassay

A review on microalgae cultivation and harvesting, and their biomass extraction processing using ionic liquids

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