Microalgae cultivation in thin stillage anaerobic digestate for nutrient recovery and bioproduct production

Sayedin, Farid; Kermanshahi-pour, Azadeh; He, Quan; Tibbetts, Sean M.; Lalonde, Crystal G.; Brar, Satinder Kaur

doi:10.1016/j.algal.2020.101867

Cited by 55 publications

(24 citation statements)

References 44 publications

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“…Besides, this higher proportion of FW contains a high concentration of Cl – , Na + , and SO 4 2– , which may also suppress cell proliferation . Also, some authors have reported that a high concentration of organic matter may also inhibit microalgae growth. ,, Therefore, the highest cell density of Chlorella sp. at 50% FW concentrations could be inferred to the best compromise of both organic and inorganic nutrients.…”

Section: Results and Discussionmentioning

confidence: 99%

Treatment of Saline Organic-Rich Fermentation Wastewater by Marine Chlorella sp. for Value-Added Biomass Production

Shafiq

Zeb

Jawad

et al. 2021

Ind. Eng. Chem. Res.

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High-salt-concentration wastewater is an important pollution source for the ocean environment, and its ecological treatment is obligatory to meet the standard of discharge. In this study, an isolated Chlorella sp. from seawater was cultivated to treat salt organic-rich fermentation wastewater to simultaneously remove organic and inorganic nutrients. The results show that Chlorella sp. achieved the highest biomass (6.07 g/L) under a mixotrophic mode in a medium containing 50% fermentation wastewater. The removal rates of total organic carbon (TOC), ammonia-N, (NH 3 -N), total nitrogen (TN), and total phosphorus (TP) were 89, 95, 87, and 88%, respectively, after 10 days of cultivation. Lipid, carbohydrate, and protein contents in dry biomass were 33, 21, and 34% (w/w), respectively. Moreover, the produced biomass had 37.8 mg/g chlorophyll, 10 mg/g carotenoid, and 0.168 mg/g flavonoids. A flocculation efficiency of >90% was achieved in a medium containing 50% fermentation wastewater in 12 h of settling. The fatty acids composition analysis of the produced lipid shows that it is a suitable feedstock for biodiesel production. Taken together, mixotrophic cultivation of marine Chlorella sp. has the potential for the treatment of high salt organic-rich wastewater, as well as value-added biomass production.

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Section: Results and Discussionmentioning

confidence: 99%

Treatment of Saline Organic-Rich Fermentation Wastewater by Marine Chlorella sp. for Value-Added Biomass Production

Shafiq

Zeb

Jawad

et al. 2021

Ind. Eng. Chem. Res.

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“…Nitrogen merupakan salah satu nutrien esensial yang digunakan oleh mikroalga sebagai komponen utama dalam pembentukan protein dalam sel. Namun penambahan kadar nutrien berlebih justru dapat menghambat pertumbuhan mikroalga (Sayedin et al, 2020). Gambar 1 menunjukkan kadar kekeruhan di dalam sampel dari hari ke hari.…”

Section: Hasil Dan Pembahasanunclassified

Variation of Addition of Nutrients (Liquid NPK) in Microalgae Cultivation of Chlorella Sp.

Afifah¹

2021

JPSL

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Nutrien merupakan faktor penting dalam pertumbuhan mikroalga. Amonia merupakan salah satu sumber nutrien yang paling disukai oleh mikroalga karena langsung dapat dimanfaatkan di dalam tubuh mikrolaga. Meskipun amonia paling disukai, namun keberadaannya dalam jumlah besar dapat berdampak buruk pada mikroalga. Sifat racun pada amonia dapat menyebabkan kematian pada mikroalga. Penelitian ini bertujuan untuk mencari komposisi penambahan nutrien yang paling sesuai pada proses kultivasi mikroalga. Variasi penambahan NPK cair (nutrien) yang dipilih pada penelitian ini yaitu 0 mL; 0,3 mL; 1 mL; dan 2 mL. Penelitian dilakukan dengan sistem batch teraerasi. Variasi yang dianggap paling sesuai untuk proses kultivasi mikroalga yaitu variasi penamabah NPK 0,3 mL.

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“…Furthermore, high chemical and energy consumptions continue to be major barriers to commercialisation of these technologies (Ansari et al, 2016 2017) reported that Spirulina platensis in saline wastewater could remove 80% of total nitrogen and 93% of total phosphorus, and achieve 0.76 g/L in biomass content. In a more recent study, Sayedin et al (2020) showed nitrogen and phosphorus removal efficiencies of 95% and 78% from anaerobic digestate, respectively, by Chlorella sorokiniana. However, microalgae-based technology has a high space requirement, thus, it has been rarely commercially applied for removing nutrients from wastewater (Gao et al, 2016).…”

Section: Introductionmentioning

confidence: 96%

Simultaneous nutrient recovery and algal biomass production from anaerobically digested sludge centrate using a membrane photobioreactor

Nguyen

Mofijur

et al. 2022

Bioresource Technology

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Microalgae cultivation in thin stillage anaerobic digestate for nutrient recovery and bioproduct production

Cited by 55 publications

References 44 publications

Treatment of Saline Organic-Rich Fermentation Wastewater by Marine Chlorella sp. for Value-Added Biomass Production

Treatment of Saline Organic-Rich Fermentation Wastewater by Marine Chlorella sp. for Value-Added Biomass Production

Variation of Addition of Nutrients (Liquid NPK) in Microalgae Cultivation of Chlorella Sp.

Simultaneous nutrient recovery and algal biomass production from anaerobically digested sludge centrate using a membrane photobioreactor

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