Deciphering role of technical bioprocess parameters for bioethanol production using microalgae

Bibi, Farhana; Yasmin, Humaira; Jamal, A. Rahman A.; AL-Harbi, Mohammad S.; Ahmad, Mushtaq; Zafar, Muhammad; Ahmad, Bashir; Samra, Bassem N.; Ahmed, Atef F.; Ali, Muhammad Ishtiaq

doi:10.1016/j.sjbs.2021.10.011

Cited by 21 publications

(7 citation statements)

References 67 publications

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“…Pareto analysis was used to classify and compare the statistical significance of all the model terms involved in the process. The standardised Pareto charts were plotted using Minitab software version 19.0 to determine the potentially important factor affecting the process performance (Bibi et al, 2021).…”

Section: Methodsmentioning

confidence: 99%

Optimisation of process parameters of a thermal digester for the rapid conversion of food waste into value-added soil conditioner

Kumar

Gupta

Yadav³

2023

Waste Manag Res

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A novel thermal digester for converting food waste (FW) into nutrient-rich soil conditioner was designed and explored. The process variables, that is, temperature, the volume of the digestion chamber and the rotational speed of the digester were optimised using response surface methodology (RSM). The study revealed that the digester temperature of 150°C and rotational speed of 40 RPM required minimum time (180 minutes) for attaining the equilibrium moisture with a minimum energy consumption of 0.218 kWh kg−1. The process resulted in 80 ± 2.5% reduction in total volume of the FW. Detailed characterisation revealed that the end product was comparable to the organic fertiliser as per the Fertiliser Association of India norms. The digestion helps in breakdown of cellulose content of FW into hemicellulose which supports formation of primary and secondary walls, seed storage carbohydrates, and facilitates plant growth. 1H-Nuclear magnetic resonance (1H-NMR) spectra of the end product revealed mineralisation of organics during digestion. Decrease in ultraviolet (UV) absorbance value at 280 nm also revealed the humification of the end product. X-ray diffraction (XRD) analysis disclosed extremely low crystallinity and non-recalcitrant nature of the end product. A low humification index value (HI-3.43), high fertilising index (FI-4.8), and clean index (CI-5.0) revealed that the end product could safely be utilised as an organic fertiliser. The cost–benefit analysis revealed that thermal digestion technique is profitable and economically viable with benefit–cost ratio (BCR) of 1.35. The study offers a unique approach for the rapid and hassle-free production of value-added soil conditioner from FW.

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Section: Methodsmentioning

confidence: 99%

Optimisation of process parameters of a thermal digester for the rapid conversion of food waste into value-added soil conditioner

Kumar

Gupta

Yadav³

2023

Waste Manag Res

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“…Closteriopsis acicularis was examined to study the effect of pH and phosphate concentration on biofuel production. This study resulted in the production of 51 g ethanol g glucose −1 with maximal yield of 14.9 g L −1 of ethanol using acid‐catalyzed saccharification of biomass 197.…”

Section: Conversion Strategiesmentioning

confidence: 99%

“…with maximal yield of 14.9 g L -1 of ethanol using acid-catalyzed saccharification of biomass [197].…”

Section: Bioethanolmentioning

confidence: 99%

Current Advancements in Biofuel Production from Microalgae: Harvesting and Conversion Technologies

et al. 2023

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The objective of this review is to interpret the usage of alternative renewable systems that is imperative for future developments on a global industrial scale. Microalgae have appeared as the most realistic source for biofuel generation due to the accumulation of lipids in most of the strains with rapid biomass expansion and greater photosynthetic efficiency than land plants. Microalgal‐derived feedstocks have a broad range of commercial advantages and can be used as promising renewable fuel substitutes with zero net CO2 emission. Important facets of algal‐based biofuel production, growing and harvesting techniques, approaches to thermochemical conversion, synthesis of commodities with added value, and recent breakthroughs in the field of synthetic biology for fuel production are covered.

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“…Experiments has been performed by changing the concentration of different variables such as catalyst weight, oil-to-methanol ratio, temperature, and time to obtain the optimized conditions under which the yield of biodiesel is maximum (Bibi et al, 2021).…”

Section: Optimization Of Biodiesel Synthesismentioning

confidence: 99%

Scanning electron microscopy as a tool for authentication of biodiesel synthesis from Linum usitatissimum seed oil

Niazi

Ahmad

Elnaggar

et al. 2021

Microscopy Res & Technique

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Utilization of renewable and alternative energy feedstocks such as nonedible seeds oil to deal with the increasing energy crises and related ecological concerns have gained the attention of researchers. Biodiesel is an efficient and renewable substitute for diesel engine. This work investigates the potential of inexpensive nonedible seed oil of Linum usitatissimum to synthesize biodiesel using iron sulfate green nanocatalyst through the process of transesterification. Flax seed contains about 37.5% oil content estimated through Soxhlet apparatus. Light microscopy revealed that seed size varies from 3.0 to 6.0 cm in length, 2.0 to 3.3 cm in width, and 0.7 to 1.0 mm in diameter. Color of seed varied from yellow to brown. Characterization of biodiesel is performed through GC–MS and FTIR. Scanning electron microscopy was carried out to study the morphological features of seed coat. Catalyst was characterized by scanning electron microscopy, energy diffraction X‐ray, and X‐ray diffraction. The diffraction peaks of Fe3O4 green nanoparticles were found to be in 2θ values, 30.24°, 35.62°, 38.26°, 49.56°, 57.12°, and 62.78°. Fuel properties of biodiesel are also determined and compared with ASTM standards. Linum usitatissimum biodiesel has density 0.8722 (15°C kg/L), kinetic viscosity 5.45 (40°C cSt), flash point (90°C), pour point (−13°C), cloud point (−9°C), sulfur (0.0432% wt), and total acid number (0.245 mg KOH/g). It is concluded that L. usitatissimum seed oil is a highly potential source for biodiesel production to cope with the challenge of present energy demand.

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Deciphering role of technical bioprocess parameters for bioethanol production using microalgae

Cited by 21 publications

References 67 publications

Optimisation of process parameters of a thermal digester for the rapid conversion of food waste into value-added soil conditioner

Optimisation of process parameters of a thermal digester for the rapid conversion of food waste into value-added soil conditioner

Current Advancements in Biofuel Production from Microalgae: Harvesting and Conversion Technologies

Scanning electron microscopy as a tool for authentication of biodiesel synthesis from Linum usitatissimum seed oil

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