Phycoremediation coupled production of algal biomass, harvesting and anaerobic digestion: Possibilities and challenges

Prajapati, Sanjeev Kumar; Kaushik, Prachi; Malik, Anushree; Vijay, Virendra Kumar

doi:10.1016/j.biotechadv.2013.06.005

Cited by 170 publications

(83 citation statements)

References 150 publications

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“…Yen and Brune (2007) found that co-digestion of wastepaper and algal sludge could efficiently balance the feedstock carbon and nitrogen ratio, thus improving methane productivity. The addition of maize silage as a co-substrate is widely used in practice, particularly in the case of high-nitrogen media (Yangin-Gomec and Ozturk 2013), contrary to the restriction of ammonia toxicity (Prajapati et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of co-substrate feeding on methane yield of anaerobic digestion of Chlorella vulgaris

et al. 2016

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Microalgal production has many advantages over the use of terrestrial plants; therefore, increases in the use of microalgae for energy production can be expected. Algal biomass can be processed anaerobically to methane; however, the unfavorable C/N ratio of the substrate may have an inhibitory effect. The impact of the application of used cooking oil, maize silage, and mill residue on anaerobic co-digestion of the microalgal Chlorella vulgaris was studied in semi-continuous, laboratory-scale digestion. During the full period of the trial involving anaerobic digestion of algae in the case of mono-digestion and co-digestion with used cooking oil, maize silage, and mill residue, the volumetric methane yields were 0.38 ± 0.07, 1.56 ± 0.26, 1.19 ± 0.18, and 1.16 ± 0.13 L L −1 , respectively. Trials were carried out to determine the long-term effect of the total solid (TS) content of substrates (co-digestion of C. vulgaris and used cooking oil at 3.8 and 7.2 % of TS, respectively). Both designs could be increased to 5.5 g VS L, but a higher TS% resulted in increased methane production and a longer period of decline in the methane yield due to washout. The sharp decrease in methane content at the end of 90 days was accompanied by a reorganization of the methanogenic archaeal community.

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Section: Introductionmentioning

confidence: 99%

Effect of co-substrate feeding on methane yield of anaerobic digestion of Chlorella vulgaris

et al. 2016

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“…Table 2 shows different nutrient removal experiences using microalgae from digestate liquid fraction. In addition to nitrogen and phosphorous, algae also require trace amount of micro-nutrients such as metals (Na, Mg, Ca, Mn, Zn, Cu, Fe and Mo) and vitamins for effective growth [98]. Algae can also be used as bio-sorbent to remove heavy metal ions (e.g.…”

Section: Phycoremediationmentioning

confidence: 99%

Nutrient recovery technologies for anaerobic digestion systems: An overview

Romero-Güiza

Mata‐Alvarez

Rivera

et al. 2016

rev.ion

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“…This is particularly required in cases where algal cultures are cultivated in wastewater with CO 2 injection. In such cases, algae utilizes light for energy, CO 2 as carbon source while simultaneously utilizing organics for treatment of wastewater hereby making the process more economically viable [7,12,13]. …”

Section: Strain Selection and Mode Of Cultivationmentioning

confidence: 99%

“…Keeping in mind the process economics, significant economical addition to the entire process can be done through harvesting of algal biomass and then use of algal biomass for bioenergy generation [7]. Depending upon the scale, size and density of algal culture, various harvesting techniques like centrifugation, flocculation, gravity sedimentation, filtration, electrophoresis etc.…”

Section: Harvesting Of Algal Biomass Post Co 2 Sequestrationmentioning

confidence: 99%

“…Several models have indicated the techno-economic feasibility of integrated algal use by utilizing nutrients from wastewater, carbon from waste gases and subsequent production of biofuel [7]. The key problem associated with the current research is that the investigations are mostly confined to laboratory experiments where often the conditions are controlled which deviate a lot from the real ones.…”

Section: Introductionmentioning

confidence: 99%

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Photobioreactor for CO2 Sequestration: Possibilities and Challenges

Chawla¹,

Pant²,

Sreekrishnan³

2014

J Bioremed Biodeg

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Global warming due to increased CO 2 emission has become a major issue today. In this regard, algae offer a plethora of opportunities due to its photosynthetic route of conversion of CO 2 to biomass which is manifold higher than that of plants. In this regard, this paper highlights the issues, challenges and opportunities generated through algal sequestration of CO 2 . The paper talks about various factors that enhance the efficiency of algal consumption as well as accumulation of CO 2 . The parameters like mode of cultivation, photobioreactors design considerations and harvesting of algal biomass have been given due importance. The perspectives offered will provide a deep insight into development of an integrated technology for making CO 2 sequestration commercially viable.

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Phycoremediation coupled production of algal biomass, harvesting and anaerobic digestion: Possibilities and challenges

Cited by 170 publications

References 150 publications

Effect of co-substrate feeding on methane yield of anaerobic digestion of Chlorella vulgaris

Effect of co-substrate feeding on methane yield of anaerobic digestion of Chlorella vulgaris

Nutrient recovery technologies for anaerobic digestion systems: An overview

Photobioreactor for CO2 Sequestration: Possibilities and Challenges

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