Use of microalgae residues for biogas production

Ramos-Suárez, Juan Luis; Carreras, Nely

doi:10.1016/j.cej.2013.12.053

Cited by 107 publications

(28 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Unfortunately, the methane yield from natural mixed algae cultures grown in less controlled systems (real world application) are found in the lower range, rarely exceeding 0.300 m 3 CH 4 kg À1 VS (González-Fernández et al, 2011;Keymer et al, 2013;Passos et al, 2013). This fact has raised the interest on algae pre-treatment techniques, with and without co-products recovery, aiming to improve algae biodegradability through cell wall disruption (Milledge and Heaven, 2014;Ramos-Suárez and Carreras, 2014). Under this rationale, the feasibility of an algaebased biorefinery is mainly linked to: (i) the co-products economic value; (ii) biogas value as electricity and/or heat energy; (iii) algae harvesting and concentration, where harvested algae may not only be thickened, but also dewatered or even dried before processing for co-products extraction (Alzate et al, 2014;Sialve et al, 2009;Ward et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…The potential of using algae as a co-substrate has recently been reported in several publications; however, these studies focus on sewage sludge or carbon-rich waste as the main substrate (Cecchi et al, 1996;Mata-Alvarez et al, 2014;Ramos-Suárez and Carreras, 2014;Zhong et al, 2012), while few studies have evaluated AcoD of animal manure and algae (González-Fernández et al, 2011;Miao et al, 2014;Sarker et al, 2014). From a nutrient balancing perspective, AcoD of algae and manure does not seem obviously attractive, because both substrates are characterised by a relatively low carbon-to-nitrogen (C/N) ratio (<10) (Mata-Alvarez et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…AD has been identified as a key process to make algae biorefineries commercially feasible (Milledge and Heaven, 2014;Uggetti et al, 2014), and can be used to treat either raw algal biomass or algal residue after extraction of valuable intracellular products (Keymer et al, 2013;Passos et al, 2013;Ramos-Suárez and Carreras, 2014;Sialve et al, 2009). The viability of algae AD is highly dependent on: (i) the organic concentration of the feedstock, since harvesting and concentrating algae biomass is a major cost; and (ii) the biochemical methane potential (B 0 ) of the algae (Uggetti et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Anaerobic co-digestion of pig manure and algae: Impact of intracellular algal products recovery on co-digestion performance

Astals

Musenze

Bai

et al. 2015

Bioresource Technology

142

View full text Add to dashboard Cite

This paper investigates anaerobic co-digestion of pig manure and algae (Scenedesmus sp.) with and without extraction of intracellular algal co-products, with views towards the development of a biorefinery concept for lipid, protein and/or biogas production. Protein and/or lipids were extracted from Scenedesmus sp. using free nitrous acid pre-treatments and solvent-based Soxhlet extraction, respectively. Processing increased algae methane yield between 29% and 37% compared to raw algae (VS basis), but reduced the amount of algae available for digestion. Co-digestion experiments showed a synergy between pig manure and raw algae that increased raw algae methane yield from 0.163 to 0.245 m(3) CH4 kg(-1)VS. No such synergy was observed when algal residues were co-digested with pig manure. Finally, experimental results were used to develop a high-level concept for an integrated biorefinery processing pig manure and onsite cultivated algae, evaluating methane production and co-product recovery per mass of pig manure entering the refinery.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Anaerobic co-digestion of pig manure and algae: Impact of intracellular algal products recovery on co-digestion performance

Astals

Musenze

Bai

et al. 2015

Bioresource Technology

142

View full text Add to dashboard Cite

show abstract

“…In fact, it has been shown that viable microalgae biofuel production in full-scale systems is only possible if all processes are optimised and integrated in a biorefinery approach (Rawat et al, 2013). Particularly, anaerobic digestion has been considered a crucial step for recovering energy from residual biomass after lipid extraction (Ramon-Suárez and Carreras, 2014). Anaerobic digestion is a consolidated technology, which may be also used for converting the whole microalgal biomass into biogas, without previous drying and extracting steps.…”

Section: Introductionmentioning

confidence: 99%

Comparing pretreatment methods for improving microalgae anaerobic digestion: Thermal, hydrothermal, microwave and ultrasound

Passos

Carretero

Ferrer

2015

Chemical Engineering Journal

175

View full text Add to dashboard Cite

This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. lipids. This was attributed to the macromolecular and cell wall composition of the main microalgae species composing the biomass, i.e. Monoraphidium sp. and Stigeoclonium sp. Furthermore, the methane yield was increased by 72% for thermal, 28% for hydrothermal and 21% for microwave pretreatments, whereas no significant increase was found for ultrasonication as compared to control.Outstanding results of the thermal pretreatment should be validated in prospective pilot-scale studies in order to quantify the potential increase in biogas production upon continuous operation.

show abstract

“…In Scenedesmus spp., residual biomass free from lipids and amino acids was investigated for biogas production, and results exhibited that residual biomass gives better biogas yield compared to raw biomass [13].…”

Section: Biogasmentioning

confidence: 99%

Biofuels from Microalgae

Tiwari¹,

Kiran²

2018

Advances in Biofuels and Bioenergy

View full text Add to dashboard Cite

Biofuels are the most awaited products of scientific research. The fossil fuels are being exhausted, and pollution is increasing globally. Algal biofuels are one of the promising options. They are wonderful tiny factories that yield a variety of substances that have the property to act as sources of ecofriendly fuels. More attention has been focused on microalgae-derived biomass for generating diverse renewable energy sources. The distinct features that microalgae possess include high biomass yield, abundant oil content, no requirement for land and easy cultivation in wastewaters coupled with carbon dioxide mitigation. Microalgae are tiny reservoirs of a plethora of biofuels. The diverse algal biofuels range from biodiesel, straight vegetable oil (SVO), lipids, ethanol and hydrogen. Biofuels are the need of today, and researchers around the globe are exploring the options for biological fuel production.

show abstract

Use of microalgae residues for biogas production

Cited by 107 publications

References 26 publications

Anaerobic co-digestion of pig manure and algae: Impact of intracellular algal products recovery on co-digestion performance

Anaerobic co-digestion of pig manure and algae: Impact of intracellular algal products recovery on co-digestion performance

Comparing pretreatment methods for improving microalgae anaerobic digestion: Thermal, hydrothermal, microwave and ultrasound

Biofuels from Microalgae

Contact Info

Product

Resources

About