Plasticizer and Surfactant Formation from Food‐Waste‐ and Algal Biomass‐Derived Lipids

Pleißner, Daniel; Lau, Kin Yan; Zhang, Chengwu; Lin, Carol Sze Ki

doi:10.1002/cssc.201402888

Cited by 44 publications

(18 citation statements)

References 17 publications

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“…High-quality untargeted analyses also provide the potential for identification of high-value components, which may be utilized by a biorefinery approach for the valorization of algal biomass. Recent work has shown that products such as lipids and protein, which are predominantly used for biodiesel and animal feed, may actually produce high-value commodities such as therapeutics, bio-derived pigments, surfactants, and polymer precursors (Christaki et al 2013;Pleissner et al 2015;Hess et al 2018;Sathasivam and Ki 2018;Sathasivam et al 2019). Due to the difficult economics surrounding bioenergy production from algal biomass, it is more important than ever to include commodity chemicals in the algae production value chain in a biorefinery approach (Dong et al 2016a;Laurens et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Advanced mass balance characterization and fractionation of algal biomass composition

et al. 2021

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Opportunities associated with biomass production and bioproduct isolation from algae-derived feedstocks are plentiful and promising; however, there are challenges associated with realizing these applications. One of the most important, and often overlooked, challenges is the lack of availability of a strong foundation of compositional analysis methods validated on microalgal biomass. Currently, compositional analysis in algae is dominated by the use of interference-prone methods, a lack of full mass balance accounting, and the use of top-down approaches that bin all unaccounted-for mass into a single category, such as carbohydrates. We present here an approach based on a bottom-up algal biomass characterization aimed at moving towards, and highlighting the importance of, full and accurate mass closure to achieve the maximum economic potential from a sustainable and renewable feedstock. Algal biomass representing three genera, Nannochloropsis, Scenedesmus, and Monoraphidium, was subjected to a cell rupture and fractionation process, followed by detailed characterization of each fraction to determine the partitioning of measured and unknown components. The goal of this work is to identify where the missing components partition, and develop a strategy to close the mass balance or identify the unknowns, while utilizing a rigorous characterization approach for characterizing algal biomass. Although only 75–80% of the biomass was accounted for, the fractionation approach utilized here provides key insight into possible chemical components for future investigations.

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Section: Introductionmentioning

confidence: 99%

Advanced mass balance characterization and fractionation of algal biomass composition

et al. 2021

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“…Hydrothermal transformation of biomass into biofuels and carbon-based chemicals is a promising technology to deal with the fossil fuel depletion and greenhouse gas emission. [1,2] Depending on the reaction temperatures, thermochemical conversion of biomass can be classified into hydrothermal carbonization (150-250°C), hydrothermal liquefaction (250-350°C), pyrolysis (350-700°C), and gasification (700-1000°C). [3][4][5] In particular, hydrothermal liquefaction (HTL) is a direct thermochemical-conversion of biomass for liquid biofuel production under relatively mild reaction conditions.…”

Section: Introductionmentioning

confidence: 99%

Keggin‐type Heteropolyacids‐Catalyzed Selective Hydrothermal Oxidation of Microalgae for Low Nitrogen Biofuel Production

Shen

Long

et al. 2020

ChemSusChem

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Hydrothermal liquefaction (HTL) of microalgae for biofuel production is suffering from low bio-oil yield and high heteroatomic compositions owing to their low efficiency and selectivity to hydrolysis of cellular compounds. Hereby we report Keggin-type (MoÀ VÀ P) heteropolyacids (HPAs)-catalyzed HTL of microalgae for efficient low-nitrogen biocrude production. The increases of reaction temperature, reaction time, and vanadium substitution degrees of HPAs are favorable to biocrude yield initially, whereas a significant decrease of biocrude yield is observed owing to the enhanced oxidation of carbohydrates above the optimum reaction conditions. The maximum biocrude yield of HPAs-catalyzed HTL of microalgae is 29.95 % at reaction temperature of 300°C, reaction time of 2 h, and 5 wt% of HPA-4, which is about 19.66 % higher than that of control with 71.17 % less N-containing compounds, including 1,3-propanediamine, 1-pentanamine, and 2, 2'heptamethylene-di-2-imidazoline than that of control. This work reveals that HPAs with Brønsted acidity and reversible redox properties are capable of both enhancing biocrude production via catalyzing the hydrolysis of cellular compounds and reducing their nitrogen content through avoiding the Maillard reactions between the intermediates of hydrolysis of carbohydrates and proteins. HPAs-catalyzed HTL is an efficient strategy to produce low N-containing biofuels, possibly paving the way of their direct use in modern motors.

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“…The lactic acid market presents an annual growth of 16.2%, mainly due to the production of polylactic acid and ethyl lactate, whilst the estimated demand for 2025 is 1960.1 kt [1,2]. Lactic acid can be produced biotechnologically from various renewable resources and waste streams such as food waste [3,4,5], mixed bakery waste [6], coffee pulp and mucilage [7,8], algal biomass [9], and lignocellulosic hydrolysates [10] among others.…”

Section: Introductionmentioning

confidence: 99%

Membrane Technologies for Lactic Acid Separation from Fermentation Broths Derived from Renewable Resources

2018

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Lactic acid (LA) was produced on a pilot scale using a defined medium with glucose, acid whey, sugar bread and crust bread. The fermentation broths were then subjected to micro- and nanofiltration. Microfiltration efficiently separated the microbial cells. The highest average permeate flow flux was achieved for the defined medium (263.3 L/m2/h) and the lowest for the crust bread-based medium (103.8 L/m2/h). No LA losses were observed during microfiltration of the acid whey, whilst the highest retention of LA was 21.5% for crust bread. Nanofiltration led to high rejections of residual sugars, proteins and ions (sulphate, magnesium, calcium), with a low retention of LA. Unconverted sugar rejections were 100% and 63% for crust bread and sugar bread media respectively, with corresponding LA losses of 22.4% and 2.5%. The membrane retained more than 50% of the ions and proteins present in all media and more than 60% of phosphorus. The average flux was highly affected by the nature of the medium as well as by the final concentration of LA and sugars. The results of this study indicate that micro- and nanofiltration could be industrially employed as primary separation steps for the biotechnologically produced LA.

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Plasticizer and Surfactant Formation from Food‐Waste‐ and Algal Biomass‐Derived Lipids

Cited by 44 publications

References 17 publications

Advanced mass balance characterization and fractionation of algal biomass composition

Advanced mass balance characterization and fractionation of algal biomass composition

Keggin‐type Heteropolyacids‐Catalyzed Selective Hydrothermal Oxidation of Microalgae for Low Nitrogen Biofuel Production

Membrane Technologies for Lactic Acid Separation from Fermentation Broths Derived from Renewable Resources

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