Microalgae carbon fixation integrated with organic matters recycling from soybean wastewater: Effect of pH on the performance of hybrid system

Song, Chunfeng; Han, Xiaoxuan; Qiu, Yu; Liu, Zhengzheng; Li, Shuhong; Kitamura, Yutaka

doi:10.1016/j.chemosphere.2020.126094

Cited by 47 publications

(7 citation statements)

References 41 publications

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“…Regarding the autotrophic culture, the observed rates for the cultures with sodium nitrate and urea were similar. Wang and collaborators (25) reported growth rates in a range of 0.1 -0.2 d -1 using DAM under autotrophic conditions and sodium nitrate as nitrogen source, like those achieved in this work, it should be noted that for the other sources and under mixotrophic conditions no data have been reported yet (26) . According to the statistical analysis, it was found that the cultures with sodium nitrate and urea do not have significant differences when using DAM, and there are significant differences when compared to the culture with ammonium phosphate, as shown in Table 5.…”

Section: Kinetic Parameters Estimation and Nutrient Removalsupporting

confidence: 77%

“…The pH affects metabolism associated with growth, including ionization of biochemical metabolites, solubility, as well as CO2 bioavailability and assimilation of nutrients, mainly nitrogen. Very acidic pH can affect this process, so optimum pH can be in the range of 6 to 8 (26) . The concentrations of COD and BOD show the low concentration of organic matter in the MAD, these effluents contain inorganic compounds, mainly iron salts, sulfur, chlorides, and some heavy metals, which generate extreme environments where only some microorganisms can exist with the ability to assimilate these compounds (19) .…”

Section: Mad Physicochemical Characterization and Biomass Production ...mentioning

confidence: 99%

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Different effect of nitrogen sources in autotrophic and mixotrophic culture of Scenedesmus sp for biomass and carotenoids production using acidic coal mine drainage effluents

Urbina-Suarez

2021

inycomp

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In the present study, the conditions for autotrophic and mixotrophic culture of Scenedesmus sp were established. Effluents from acidic coal mine drains were used to study biomass and carotenoid production, both under autotrophic and mixotrophic conditions in relation to the effect of different sources of nitrogen: sodium nitrate, urea and ammonium phosphate. Pollutant removal was determined, such as COD, TOC, heavy metals, ions and total suspended solids. Batch cultures lasted nine days and biomass production, carotenoids and pollutant removal were compared in each condition. The highest biomass concentration reached was 1.2 g/L in the mixotrophic culture with urea, followed by the culture with sodium nitrate of 0.9 g/L in a C/N ratio of 6:1. The highest carotenoid specific concentration was reached in the mixotrophic culture with sodium nitrate, 19.43 mg carotenoids /g biomass. The culture with ammonium phosphate was found to be inhibitory for the growth of the microalgae with the lowest results of all the parameters except for the autotrophic culture where the concentration of carotenoids was very similar to those reached with sodium nitrate and urea. Finally, the mixotrophic culture with urea presented the highest removal percentages, being 86.97% for total iron, 58.29% for chlorides and 92.5% for COD.

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Section: Kinetic Parameters Estimation and Nutrient Removalsupporting

confidence: 77%

Section: Mad Physicochemical Characterization and Biomass Production ...mentioning

confidence: 99%

Different effect of nitrogen sources in autotrophic and mixotrophic culture of Scenedesmus sp for biomass and carotenoids production using acidic coal mine drainage effluents

Urbina-Suarez

2021

inycomp

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“…Low pH and sufficiently phosphorous resources determine efficient COD removal by microalgae (Song et al, 2019) but pH adjustment to neutral at 7.0 guaranteed growth of microalgae (Song et al, 2020). COD removal by reactor is effective in pH at 7.0-7.4 (Guo et al, 2018).…”

Section: Wastewater Quality Of Tss Bod Cod and Phmentioning

confidence: 99%

Wastewater Quality and Pollution Load of Each Stage in Tempeh Production

Pramaningsih

Hansen

Praveena

et al. 2022

indones. j. urban. environ. technol.

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Aim: This study is purpose to understand the chemical and physical characteristics and pollution load in each step of tempeh wastewater: washing, boiling, soaking and mixing. Tempeh is traditional food from soybean fermentation. Tempeh has a lot of healthy contents as protein and vitamin. However, wastewater from tempeh production is discharge to river directly which considered as environmentally damaging. However, the characteristics of wastewater from tempeh production and its level of environmental impacts to environment are limitedly studied. Methodology and Results: Tempeh wastewater was analyzed in chemical and physical parameters. Chemical characteristics analyzed are pH, Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD). pH was measured using pH meter, BOD using SNI 6989.72:2009 method and COD using SNI 6989.2:2019 method. The physical parameter analyzed is Total Suspended Solid (TSS) and analyzed using SNI 6989.3: 2019 method. Pollution load calculated by deviation maximum pollution load and pollution load existing. Result of this study findings indicated that the highest BOD 299.40 mg/L and COD 540.66 mg/L was found in soaking step compared to other steps in tempeh production. Highest TSS 655.20 mg/L was found in boiling step. The pH values in all steps were acidic 4 and 5. Allocation Pollution load of: TSS overall exceeded the capacity, BOD and COD overall exceeded the capacity except in washing step (BOD 304.39 kg/day and COD 857.78 kg/day). Conclusion, significance and impact of study: The Highest TSS of tempeh wastewater processes was in boiling step while the highest organic matter was detected in soaking. Further for whole pH were acidic and exceeded the standard. Allocation of pollution load for TSS, BOD and COD exceed the standard except for BOD and COD in washing waste. Overall tempeh wastewater needs treatment to prevent river pollution.

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“…Nutrien berlebih akan berdampak pada tingginya kadar amonia. Kadar amonia dalam jumlah besar akan bersifat racun (Fabregas et al, 1989;Song et al, 2020), yang berdampak buruk terhadap keberlangsungan hidup mikroorganisme, seperti yang terjadi pada Va-1mL dan Va-2mL.…”

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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Microalgae carbon fixation integrated with organic matters recycling from soybean wastewater: Effect of pH on the performance of hybrid system

Cited by 47 publications

References 41 publications

Different effect of nitrogen sources in autotrophic and mixotrophic culture of Scenedesmus sp for biomass and carotenoids production using acidic coal mine drainage effluents

Different effect of nitrogen sources in autotrophic and mixotrophic culture of Scenedesmus sp for biomass and carotenoids production using acidic coal mine drainage effluents

Wastewater Quality and Pollution Load of Each Stage in Tempeh Production

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

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