Microalgae Biodiesel as a Valuable Alternative to Fossil Fuels

Rahpeyma, Sayyed Shahryar

doi:10.1007/s12155-019-10033-6

Cited by 41 publications

(13 citation statements)

References 47 publications

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“…The lipid content depends on the specific algal strains and their growth conditions. Most microalgal strains are rich in lipids, which account for 20% to 30% of the dry biomass weight [ 146 ]. Kabir et al [ 147 ] screened 41 microalgae strains from freshwater and wastewater.…”

Section: Enzyme Catalystmentioning

confidence: 99%

Biodiesel Production Using Homogeneous, Heterogeneous, and Enzyme Catalysts via Transesterification and Esterification Reactions: a Critical Review

2021

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The excessive utilization of petroleum resources leads to global warming, crude oil price fluctuations, and the fast depletion of petroleum reserves. Biodiesel has gained importance over the last few years as a clean, sustainable, and renewable energy source. This review provides knowledge of biodiesel production via transesterification/esterification using different catalysts, their prospects, and their challenges. The intensive research on homogeneous chemical catalysts points to the challenges in using high free fatty acids containing oils, such as waste cooking oils and animal fats. The problems faced are soap formation and the difficulty in product separation. On the other hand, heterogeneous catalysts are more preferable in biodiesel synthesis due to their ease of separation and reusability. However, in-depth studies show the limited activity and selectivity issues. Using biomass waste-based catalysts can reduce the biodiesel production cost as the materials are readily available and cheap. The use of an enzymatic approach has gained precedence in recent times. Additionally, immobilization of these enzymes has also improved the statistics because of their excellent functional properties like easy separation and reusability. However, free/liquid lipases are also growing faster due to better mass transfer with reactants. Biocatalysts are exceptional in good selectivity and mild operational conditions, but attractive features are veiled with the operational costs. Nanocatalysts play a vital role in heterogeneous catalysis and lipase immobilization due to their excellent selectivity, reactivity, faster reaction rates owing to their higher surface area, and easy recovery from the products and reuse for several cycles.

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Section: Enzyme Catalystmentioning

confidence: 99%

Biodiesel Production Using Homogeneous, Heterogeneous, and Enzyme Catalysts via Transesterification and Esterification Reactions: a Critical Review

2021

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“…where y, x i , β o , β i , β ii , β ij , and ϵ indicate the output or response, the coded variables, the intercept term, the linear effect, the squared effect, the interaction effect, and the error term, respectively. For statistical evaluations, the liaison between coded and natural parameters can be presented as in Equation (8).…”

Section: Central Composite Design (Ccd)mentioning

confidence: 99%

“…In this regard, biofuels from non-food sources including microalgae biomass considered as a potential feedstock. [6][7][8][9][10] It is a noteworthy aspect that lipid amount in microalgae biomass is a key parameter for production of biofuel yield. 6,[11][12][13] Worth mentioning that there are several thousands of microalgae species available in the nature.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, the major energy companies around the world have been engaged on development of sustainable energy resources and technologies. In this regard, biofuels from non‐food sources including microalgae biomass considered as a potential feedstock 6‐10 . It is a noteworthy aspect that lipid amount in microalgae biomass is a key parameter for production of biofuel yield 6,11‐13 .…”

Section: Introductionmentioning

confidence: 99%

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Optimization of microalgal biomass and lipid productivities for bioenergy production using central composite design with desirability function

Hossain

Sultana

Hossain

et al. 2021

Intl J of Energy Research

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This study investigates the influences of light-dark cycles and NaNO 3 dose on Chlorella kessleri microalgal-specific growth rate (SGR), biomass productivity (P), and intracellular lipid productivity (LP) by using central composite design with desirability function. A single-objective optimization showed that the maximum SGR, P, and LP can be achieved as 0.487 day −1 , 58.718 g/L day −1 , and 14.252 mg/L day −1 , respectively. The corresponding optimized light-dark cycle and NaNO 3 loading were determined as 11.6/8.4 (h/h) and 15.54 g/L, 12/12 (h/h) and 16.23 g/L, and 12/12 (h/h) and 6.63 g/L, respectively. The multiresponse optimization showed that the highest SGR of 0.359 day −1 , biomass productivity of 50.663 g/L day −1 and LP of 14.114 mg/L day −1 can be accomplished at culture environments of 12/12 (h/h) light-dark cycles and 10.38 g/L NaNO 3 . These results suggest that the central composite design with desirability function-based technique is useful for design and operation of photobioreactors to produce lipid from microalgae. Analysis of variance was employed to explore the significance of the factors affecting microalgal growth as well as biomass and lipid productivities. The predicted optimized culture conditions were experimentally confirmed (error < 6%) indicating the process is robust and reliable.

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“…Today, unbridled economic development and population growth have led to the excessive use of fossil fuels, producing CO 2 and sulfur compounds, the dominant sources of pollution and global warming 1–3. Biodiesel is the most promising alternative to fossil fuel due to its easy availability, ease of production, and environmentally friendly advantages.…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Production of Biodiesel from Waste Cooking Oil Utilizing Industrial Waste‐Derived MgO/CaO Catalysts

2022

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Biodiesel manufacturing using waste cooking oil is a cost‐effective method for lowering the costs of production. Composites composed of CaO and MgO recovered from industrial waste may be utilized to create ecologically heterogeneous transesterification catalysts. The activity of the catalysts and the impacts of calcination temperatures and various weight percentages were examined. The efficiency of the MgO/CaO catalyst for producing biodiesel from waste cooking oil was studied under optimum conditions. The properties and structure of the catalysts were characterized by scanning electron microscopy, X‐ray diffraction, and Fourier transform infrared, which proved the acceptable performance of the catalysts for transesterification of waste cooking oil.

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Microalgae Biodiesel as a Valuable Alternative to Fossil Fuels

Cited by 41 publications

References 47 publications

Biodiesel Production Using Homogeneous, Heterogeneous, and Enzyme Catalysts via Transesterification and Esterification Reactions: a Critical Review

Biodiesel Production Using Homogeneous, Heterogeneous, and Enzyme Catalysts via Transesterification and Esterification Reactions: a Critical Review

Optimization of microalgal biomass and lipid productivities for bioenergy production using central composite design with desirability function

Optimizing the Production of Biodiesel from Waste Cooking Oil Utilizing Industrial Waste‐Derived MgO/CaO Catalysts

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