Cultivation of Nannochloropsis salina using anaerobic digestion effluent as a nutrient source for biofuel production

Cai, Ting; Park, Stephen Y.; Racharaks, Ratanachat; Li, Yebo

doi:10.1016/j.apenergy.2013.03.056

Cited by 150 publications

(80 citation statements)

References 49 publications

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“…，f/2培地(0.9 mM-N，3.8 -P) 9) よりも低い．一方，畜産排水や嫌気消化液の栄養塩濃度は高く，例えば養豚排水では約110 mM-N，4 mM-P 5) ，消化液では約190 mM-N， 12 mM-P 10,11) である．窒素やリンの濃度は，各々f/2培地の100倍以上であり，藻類の培地として期待できる．畜産排水や嫌気消化液に含まれる窒素の主な形態はアンモニア態窒素であるが 5,6,[10][11][12] ，高濃度のアンモニア態窒素は藻類の増殖を阻害する．例えば，B. brauniiは1 mM-N以上 13) ，Dunaliella tertiolectaでは3 mM-N以上 14) で炭素の取り込みが阻害された．また，人工海水を用いて希釈した消化液でのSynecocystis sp.やNannochloropsis salinaの培養例において，前者では6/100以上(アンモニア態窒素9.8 4 Cl に変更した．f/2 培地の窒素濃度は 0.9 mM であったため，この実験でのアンモニア態窒素の濃度は，0.9 mM～57.6 …”

Section: はじめにunclassified

Cultivation of Oil-Producing Algae Using an Anearobic Digestion Effluent Containing a High Concentration of Ammonium-Nitrogen

Nakai¹,

Okuda²,

Nishijima³

et al. 2014

J. JSCE, Ser. G

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NH 4 Clとした改変f/2培地を用いてA株のアンモニア耐性を評価した結果，A株はアンモニア態窒素濃度0.9 ～57.6 mMで増殖でき，14.4 mMのときに増殖量が最大となった．アンモニア態窒素濃度14.4 mMでの最大増殖量はf/2培地使用時よりも高かったが，窒素源としては硝酸態窒素の方が好適であった．下水二次処理水や海水で希釈した消化液において，A株は増殖し，脂質を生産した．しかしながら，消化液にはA株の増殖を低下させる因子が含まれた．下水二次処理水を用いて希釈した消化液での最大増殖量，脂質生産量は海水を用いて希釈した消化液よりも高く，消化液の希釈液としては下水二次処理水の方が好適であった．

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Section: はじめにunclassified

Cultivation of Oil-Producing Algae Using an Anearobic Digestion Effluent Containing a High Concentration of Ammonium-Nitrogen

Nakai¹,

Okuda²,

Nishijima³

et al. 2014

J. JSCE, Ser. G

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“…Carbon limitation was found in WS. Many data indicate that that nutrient imbalance may limit the growth of microalgae [2,3,19]. The growth of Chlorella PY-ZU1was almost doubled through the addition of phosphate, but adding phosphorus at higher concentrations may have an adverse effect due to higher cell osmotic pressure [2].…”

Section: Composition Analysis Of Adesmentioning

confidence: 99%

“…Rhodobacter sphaeroides and Chlorella sorokiniana were not inhibited by relatively high ammonia concentrations, while Spirulina platensis was completely inhibited at a TAN level of 400 mg/L [27]. Cai et al [19] state, that ammonium at concentrations greater than 450 mg/L is often toxic to microalgae. According to Wang et al [4], Chlorella sp.…”

Section: Composition Analysis Of Adesmentioning

confidence: 99%

“…Coupling microalgae culture and ADEs treatment has been already explored by Cheng et al [2] using ADE of swine manure, Morales-Amaral et al [16] using centrate from AD, Yang et al [17] using anaerobic digested starch wastewater, Park et al [18] using ADE of livestock waste, Cai et al [19] using ADE of municipal wastewater, Erkelens et al [20] using microalgae digestate effluent. However, the effects of ADEs characteristics on microalgal growth and the subsequent AD of obtained biomass are still poorly studied [21,22].…”

Section: Introductionmentioning

confidence: 99%

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The Influence of Anaerobic Digestion Effluents (ADEs) Used as the Nutrient Sources for Chlorella sp. Cultivation on Fermentative Biogas Production

Dębowski

Szwaja

Zieliński

et al. 2016

Waste Biomass Valor

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Purpose This study investigated the chemical characteristics and anaerobic digestion of Chlorella sp. microalgae cultivated on various anaerobic digestion effluents (ADEs) as a nutrient medium. Chlorella sp. was grown in anaerobically digested effluent of dairy wastewater (DW), municipal wastewater sludge (WS), maize silage and swine slurry, and cattle manure (CM). Methods To evaluate the anaerobic biodegradability of harvested biomass, 20-days batch anaerobic digestion experiments were used. Results It was found that a nutrient medium directly affected nitrogen concentration in the cultivated biomass, as well as the C/N ratio value which ranged 7.2-12.9. Higher C/N ratio of the Chlorella sp. cultivated on DW and WS significantly enhanced the methane production, which was 241 ± 5.5 mL CH 4 /g VS and 267 ± 10.9 mL CH 4 /g VS, respectively. The highest biogas production rate of 61.28 ± 2.7 mL/g VSÁd and methane concentration in biogas of 69.7 ± 4.1 % were obtained during the digestion of Chlorella sp. biomass cultivated on WS.Conclusions These results proved the applicability of ADEs as a nutrient medium for Chlorella sp. cultivation and the impact of a nutrient source on C/N ratio in harvested biomass, which subsequently affected the biogas/ methane yield.

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“…A number of investigations have demonstrated the utility of wastewaters for algal cultivation in both mono [77][78][79] and polycultures [44][45][46][47][48][49][50][51][52][53][54]77], with the latter typically demonstrating higher yields and/ or more stable productivity. Similar to nutrient stoichiometry and light availability, the full utilization of the complex niche space in wastewater streams will be facilitated by incorporating polycultures as wastewaters commonly contain a complex combination of factors that can negatively influence cultivation of individual algal strains.…”

Section: Water and Nutrient Resourcesmentioning

confidence: 99%

Assessing the potential of polyculture to accelerate algal biofuel production

Newby¹,

Mathews²,

Pate³

et al. 2016

Algal Research

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To date, the algal biofuel industry has focused on the cultivation of monocultures of highly productive algal strains, but scaling up production remains challenging. Algal monocultures are difficult to maintain because they are easily contaminated by wild algal strains, grazers, and pathogens. In contrast, theory suggests that polycultures (multispecies assemblages) can promote both ecosystem stability and productivity. A greater understanding of species interactions and how communities change with time needs to be developed. Ultimately a predictive model of community interactions is needed to harness the capacity of biodiversity to enhance productivity of algal polycultures at industrial scales. Here we review the agricultural and ecological literature to explore opportunities for increased annual biomass production through the use of algal polycultures. We discuss case studies where algal polycultures have been successfully maintained for industries other than the biofuel industry, as well as the few studies that have compared biomass production of algal polycultures to that of monocultures. Assemblages that include species with complementary traits are of particular promise. These assemblages have the potential to increase crop productivity and stability presumably by utilizing natural resources (e.g. light, nutrients, and water) more efficiently via tighter niche packing. Therefore, algal polycultures show promise for enhancing biomass productivity, enabling sustainable production and reducing overall production costs.

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Cultivation of Nannochloropsis salina using anaerobic digestion effluent as a nutrient source for biofuel production

Cited by 150 publications

References 49 publications

Cultivation of Oil-Producing Algae Using an Anearobic Digestion Effluent Containing a High Concentration of Ammonium-Nitrogen

Cultivation of Oil-Producing Algae Using an Anearobic Digestion Effluent Containing a High Concentration of Ammonium-Nitrogen

The Influence of Anaerobic Digestion Effluents (ADEs) Used as the Nutrient Sources for Chlorella sp. Cultivation on Fermentative Biogas Production

Assessing the potential of polyculture to accelerate algal biofuel production

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