Review of feedstock pretreatment strategies for improved anaerobic digestion: From lab-scale research to full-scale application

Carrère, Hélène; Αντωνοπούλου, Γεωργία; Affes, Rim; Passos, Fabiana; Battimelli, Audrey; Lyberatos, Gérasimos; Ferrer, Ivet

doi:10.1016/j.biortech.2015.09.007

Cited by 493 publications

(316 citation statements)

References 68 publications

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“…The entire mixture of microalgae and steam is subsequently flashed, and the biomass is cooled down in another vessel. Cell disruption occurs due to the rapid pressure drop (Carrere et al, 2016). This pretreatment has been scaled up in wastewater treatment plants to increase biogas production from sludge.…”

Section: Physical Methods For Cell Wall Disruptionmentioning

confidence: 99%

Cell disruption technologies

Dhondt

Martín-Juárez

Bolado

et al. 2017

Microalgae-Based Biofuels and Bioproducts

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IntroductionAlgal cell walls separate the inside cell content from the environment to protect the cell against desiccation, pathogens, and predators while still allowing exchange of compounds. Toward application of algae biomass as a sustainable resource, disruption of this cell wall (¼cell disruption) is an essential pretreatment step to maximize product recovery in downstream processes of the algae biorefinery. Also for direct use of algae in feed or food, cell rupture is required to increase the bioavailability of algae constituents. Depending on the cell wall structure, the size, and the shape of algae, cell disruption can be challenging. A variety of cell disruption methods is currently available, and new approaches are being elaborated in parallel. Since downstream processing is responsible for a large part of the operational costs in the whole production chain, cell disruption technologies should be low cost and energy efficient and result preferably in high product quality. This chapter provides information on cell wall types and gives an overview of physical-mechanical and (bio-)chemical cell disruption technologies with attention to development stage, energy efficiency, product quality, costs, emerging approaches, and applicability on large scale. Cell wall types in various groups of microalgae and cyanobacteriaThe cell wall composition and architecture of algae and cyanobacteria are highly variable ranging from tiny membranes to multilayered complex structures. Despite the importance of algal cell wall properties in biotechnology, little structural information is available for most species (Scholz et al., 2014). Based on the complexity of surface structures, four cell types could be distinguished (Barsanti and Gualtieri, 2006;Lee, 2008) (Fig. 6.1). A simple cell membrane (Fig. 6.1, Type 1) is present in short-lived stages (e.g., gametes), chrysophytes, raphidophytes, green algae Dunaliella, and haptophytes Isochrysis. It consists of a lipid bilayer with integrated and peripheral proteins. Sometimes a cap of glycolipids and glycoproteins envelops the outer surface of cell membrane. Cell membranes with additional extracellular material are known in cyanobacteria and many groups of algae, including palmelloid phases. It is the most diverse cell wall type that includes various membrane-associated structures (cell wall, Microalgae-Based Biofuels and Bioproducts. http://dx

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Section: Physical Methods For Cell Wall Disruptionmentioning

confidence: 99%

Cell disruption technologies

Dhondt

Martín-Juárez

Bolado

et al. 2017

Microalgae-Based Biofuels and Bioproducts

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“…Biogas which is one of the renewable energy carriers can be used as a substitute for fossil fuels in electricity production or as a fuel for combustion vehicles [2]. Rising fossil fuel prices and the growing interest in renewable energy sources, justifies the attempts of intensifying biogas production from sewage sludge [3,4]. Disadvantages of anaerobic digestion of sewage sludge such as long retention time of sludge in the digester or a low degree of volatile solids (VS) removal are an additional reason for the seeking of new solutions for enhancing the efficiency of this process [3,5].…”

Section: Introductionmentioning

confidence: 99%

“…Rising fossil fuel prices and the growing interest in renewable energy sources, justifies the attempts of intensifying biogas production from sewage sludge [3,4]. Disadvantages of anaerobic digestion of sewage sludge such as long retention time of sludge in the digester or a low degree of volatile solids (VS) removal are an additional reason for the seeking of new solutions for enhancing the efficiency of this process [3,5]. From the available intensification options for anaerobic digestion of sewage sludge, two seem particularly interesting, namely co-digestion with other organic wastes with high energy potential (e.g.…”

Section: Introductionmentioning

confidence: 99%

Pretreatment methods as a means of boosting methane production from sewage sludge and its mixtures with grease trap sludge

Grosser

Neczaj

2017

E3S Web Conf.

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Abstract.The main objective of this study was to determine the applicability of the selected pretreatment methods as a means of intensification of methane production from sewage sludge as well as its mixtures with grease trap sludge. The addition of the fat rich material to the digester treating sewage sludge resulted in an increased methane yield as well as volatile solids (VS) removal of up to 36% (from 134.75 mL/g VS to 182.84 mL/g VS). Furthermore, thermochemical pretreatment of the co-digestion mixture resulted in an approximately 76% higher methane yield as compared to the untreated sewage sludge. The energy balance showed that, for both materials ultrasonic pretreatment and thermochemical pretreatment has an energy self-sufficiency. All of the tested models fit the experimental data with coefficients of determination higher than 0.96.

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“…A NAEROBIC digestion is one of the most promising biomass conversion technologies [1,2,3]. With this technology, micro-organisms gradually decompose organic matter (e.g., carbohydrates, proteins and fats) via anaerobic processes which are basically hydrolysis, acidogenesis, acetogenesis and methanogenesis, into biogas and digestate [4,5,6].…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, the growth media used in soilless culture cannot support the conversion of NH 4 + into NO 3 − ; for example, with coconut fiber and rockwool, which are common substrates for soilless culture, hardly any of the NH 4 + was nitrified [18]. Therefore, it is necessary to convert NH 4 + into NO 3 − in the digestate before applying the material to soilless culture, and nitrification (biological conversion of NH 4 + into NO 3 − ) has been widely used for this purpose [19,20] In order to assess the effectiveness of nitrification processes as treatment methods for anaerobic digestate that is to be applied to soilless culture, it is necessary to know modifications of concentrations of plant nutrient ions in it during nitrification processes, which are absorbed by plants primarily as inorganic ions [21]. Zhang et al reported that the phosphorus (P) in the di-gestate was released into the solution as phosphate ions by lowered pH levels when hydrochloric acid (HCl) was added [22].…”

Section: Introductionmentioning

confidence: 99%

Modifications of Concentrations of Plant Macronutrient Ions in Digestate from Anaerobic Digestion during Nitrification Processes

Takemura¹,

Endo²,

Shibuya³

et al. 2016

JRST

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ABSTRACT:The goal of this study was to establish a system for converting digestate from anaerobic digestion processes into liquid fertilizer for soilless culture. Modifications of concentrations of plant macronutrient ions during nitrification processes were investigated with digestate from a simulated municipal organic waste. Concentrations of phosphate and calcium ions in the nitrified digestate increased; the rates of increase were 15.3 mg L -1 d -1 and 17.6 mg L -1 d -1 , respectively. Moreover, concentrations of macronutrient ions, except for magnesium, in the nitrified digestate were similar to those in a standard nutrient solution that is commonly applied to soilless culture.

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Review of feedstock pretreatment strategies for improved anaerobic digestion: From lab-scale research to full-scale application

Cited by 493 publications

References 68 publications

Cell disruption technologies

Cell disruption technologies

Pretreatment methods as a means of boosting methane production from sewage sludge and its mixtures with grease trap sludge

Modifications of Concentrations of Plant Macronutrient Ions in Digestate from Anaerobic Digestion during Nitrification Processes

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