Scaled-up experimental biogas production from two agro-food waste mixtures having high inhibitory compound concentrations

Battısta, Federico; Fino, Debora; Erriquens, F.; Mancini, Giuseppe; Ruggeri, Bernardo

doi:10.1016/j.renene.2015.03.007

Cited by 36 publications

(19 citation statements)

References 21 publications

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“…The results obtained are comparable with other studies from the literature [35][36][37][38][39][40][41]. For example Battista et al [35] determined experimentally 5.40-14.10 m 3 ·t −1 biogas produced from different samples of olive pomace.…”

Section: Biogas Potential Estimationsupporting

confidence: 89%

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Respirometric Index and Biogas Potential of Different Foods and Agricultural Discarded Biomass

et al. 2016

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Abstract:The biological stability of biomass is an important parameter for treatment plant design, process control or compost use. Measuring the biological reactivity of waste with the help of indicators such as respirometric indexes (RI) becomes an important tool to prevent the significant environmental impact of biodegradable wastes in accordance with European legislation. The aim of this paper is to show the importance of the RI technique as a tool to establish further uses of biomass such as fertilizer or biogas. The respirometric process length for different types of biomass (grape marc, apple pomace and olive pomace) was quantified. Higher moisture content seemed to favor the biological activity during the respirometric experiments and shorten the length of the process. The duration of olive pomace respirometry did not exceed 3 days, while the respirometric activity of apple scraps the lasted approximately 2 days. The highest RI values were encountered for the apple pomace, 4888 mgO 2 ·kg VS −1 ·h −1 . The majority of the discarded biomasses are categorized in the third class of stability materials in the course of degradation. This technique is important to detect the biodegradability of substrates, as well as to gain insight into the quantity and generation rate of biogas produced, information that is important from an engineering management perspective.

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Section: Biogas Potential Estimationsupporting

confidence: 89%

“…For example Battista et al [35] determined experimentally 5.40-14.10 m 3 ·t −1 biogas produced from different samples of olive pomace. In another study [36] [37] found the specific biogas yield of grape marc to be 139 m 3 ·t −1 and 64 m 3 ·t −1 for grape stalks.…”

Section: Biogas Potential Estimationmentioning

confidence: 99%

Respirometric Index and Biogas Potential of Different Foods and Agricultural Discarded Biomass

et al. 2016

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“…Different methods including physical, chemical and biological pretreatments have been employed for enhancing lignocellulose degradation (Badiei et al ., 2014; Harmsen et al ., 2010; Kumar and Sharma, 2017). Physical pretreatments include thermal, microwave and ultrasounds treatments (Battista et al ., 2015; Ren et al ., 2018; Savoo and Mudhoo 2018), promoting substrate disaggregation and breaking of large molecules into smaller oligomers for digestion by microorganisms. Chemical pretreatments are harmful for the environment and negatively impact the rationale of using lignocellulose to produce cleaner forms of fuels.…”

Section: Introductionmentioning

confidence: 99%

A microalgal‐based preparation with synergistic cellulolytic and detoxifying action towards chemical‐treated lignocellulose

Benedetti

Barera

Longoni

et al. 2020

Plant Biotechnology Journal

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High-temperature bioconversion of lignocellulose into fermentable sugars has drawn attention for efficient production of renewable chemicals and biofuels, because competing microbial activities are inhibited at elevated temperatures and thermostable cell wall degrading enzymes are superior to mesophilic enzymes. Here, we report on the development of a platform to produce four different thermostable cell wall degrading enzymes in the chloroplast of Chlamydomonas reinhardtii. The enzyme blend was composed of the cellobiohydrolase CBM3GH5 from C. saccharolyticus, the b-glucosidase celB from P. furiosus, the endoglucanase B and the endoxylanase XynA from T. neapolitana. In addition, transplastomic microalgae were engineered for the expression of phosphite dehydrogenase D from Pseudomonas stutzeri, allowing for growth in non-axenic media by selective phosphite nutrition. The cellulolytic blend composed of the glycoside hydrolase (GH) domain GH12/GH5/GH1 allowed the conversion of alkaline-treated lignocellulose into glucose with efficiencies ranging from 14% to 17% upon 48h of reaction and an enzyme loading of 0.05% (w/w). Hydrolysates from treated cellulosic materials with extracts of transgenic microalgae boosted both the biogas production by methanogenic bacteria and the mixotrophic growth of the oleaginous microalga Chlorella vulgaris. Notably, microalgal treatment suppressed the detrimental effect of inhibitory byproducts released from the alkaline treatment of biomass, thus allowing for efficient assimilation of lignocellulose-derived sugars by C. vulgaris under mixotrophic growth.

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“…In fact, ammonium is immediately available to be adsorbed and used by the plants; thus high NH 4 + /TKN ratio is preferable because it reduces the volume needed for spreading on fields [30]. Ammonium derives from the biological degradation of nitrogenous matter, mostly present in the form of proteins and urea [31]. Typical protein rich substrates are manure and food wastes [6,7].…”

Section: Cod Nitrogen and Phosphorus Concentrationsmentioning

confidence: 99%

Exploitation of Solar Energy for Ammonium Sulfate Recovery from Anaerobic Digestate of Different Origin

Battısta

Bolzonella

2019

Waste Biomass Valor

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Digestate represents the semi-liquid byproduct of the anaerobic digestion process. It was estimated that 56 Mtonnes of digestate are annually produced only in Europe. Digestate composition depends on the initial total solids (TS) mixture fed to the digester and by its origin (manure, food wastes, agricultural residues, wastewater sludge). Typical values for the different components include a stabilized organic matter content between 20 and 50 g/L, a good content of nitrogen compounds (2-8 g/kg) and of phosphorous compounds (up to 3 g/kg). In particular, ammonia presence in digestate is interesting for ammonium sulfate production, a fertilizer which favors plants' growth. Traditional ammonium sulfate synthesis is conducted by stripping followed by sulfuric acid absorption, a process which requires high energy and chemicals consumptions. This work investigates the exploitation of solar energy to evaporate the liquid phase of digestate in a lab-scale greenhouse. Digestate vapors, rich in ammonia, are sent in a Drechsler trap, filled with 38% w/w sulfuric acid solution, through three solar air fans. The process has been tested on digestates differing for TS content and origin. It emerged that the process is favored by digestates with high ammonia content, as those originated from manure, and a TS content of about 10% w/w, which allowed to obtain an ammonium sulfate concentration of about 2 M in the final solution. Statement of NoveltyTraditional ammonium sulfate production from digestate requires a previous solid/liquid separation, further polishing of the liquid phase, followed by stripping and absorption in a sulfuric acid solution. This process is characterized by high energy consumption to heat the digestate and by high reagents consumption. This work proposes an innovative and an environmental sustainable way for the ammonium sulfate recovery from digestate, without a previous solid/ liquid separation. In particular, solar energy is exploited to dry the digestate and to recover ammonia vapors, which are sent to a trap containing H 2 SO 4 to allow the ammonium sulfate production.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

show abstract

Scaled-up experimental biogas production from two agro-food waste mixtures having high inhibitory compound concentrations

Cited by 36 publications

References 21 publications

Respirometric Index and Biogas Potential of Different Foods and Agricultural Discarded Biomass

Respirometric Index and Biogas Potential of Different Foods and Agricultural Discarded Biomass

A microalgal‐based preparation with synergistic cellulolytic and detoxifying action towards chemical‐treated lignocellulose

Exploitation of Solar Energy for Ammonium Sulfate Recovery from Anaerobic Digestate of Different Origin

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