Applications of materials as additives in anaerobic digestion technology

Arif, Sania; Liaquat, Rabia; Adil, Manal

doi:10.1016/j.rser.2018.08.039

Cited by 108 publications

(46 citation statements)

References 91 publications

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“…Despite the rapidly growing number of biogas installations in Europe (from about 6,200 to 18,202 between 2009 and 2018) [8], many challenges regarding AD processes still persist. Different options have been explored to address these challenges: optimization of working parameters and bio-reactor configuration, co-digestion and nutrients control [9]; adoption of pre-treatments to enhance the degradability of various substrates [10,11]; use of inorganic and biological additives to support biomass immobilization, supplement nutrients, mitigate inhibitors and improve process stability [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Review of biochar role as additive in anaerobic digestion processes

Chiappero

Norouzi

et al. 2020

Renewable and Sustainable Energy Reviews

200

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Anaerobic digestion (AD) could be considered as a mature technology and nowadays it can still play a pivot role because of the urgent need to provide renewable energy sources and efficiently manage the continuously growing amount of organic waste. Biochar (BC) is an extremely versatile material, which could be produced by carbonization of organic materials, including biomass and wastes, consistently with Circular Economy principles, and "tailor-made" for specific applications. The potential BC role as additive in the control of the many well-known critical issues of AD processes has been increasingly

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Section: Introductionmentioning

confidence: 99%

Review of biochar role as additive in anaerobic digestion processes

Chiappero

Norouzi

et al. 2020

Renewable and Sustainable Energy Reviews

200

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“…The bicarbonate ion is often used in some applications as a buffering effect and can be added in the medium to buffer the pH variation [8,9]. Furthermore, bacterial activity could also be improved by adding compounds that stimulate their growth [29]. The production of biogas using industrial effluents including additives media to activate methanogens bacteria remains a better way to treat these wastes, while reducing greenhouse gas emissions.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic co-digestion of dairy raw by-products and Ulva sp. macroalgae: effect of organic and inorganic additives

Zara¹,

Rihani²,

Blel³

et al. 2021

Comptes Rendus. Chimie

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“…Apart from the achievements in technical designing of bioreactors, anaerobic digestion efficacy can be further improved by opting new avenues like anaerobic granules and biofilm carriers [4][5][6]. These strategies engineered the microbial biomass in the bioreactors that surmount various issues like slow growth of microorganisms, washout of microbial biomass with effluent and short duration of biogas production [7,8].…”

Section: Introductionmentioning

confidence: 99%

Study on Natural Organic Materials as Biofilm Carriers for the Optimization of Anaerobic Digestion

Zainab

Meraj

Liaquat

2019

Waste Biomass Valor

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Increased Methane productivity and organic matter removal efficiency in anaerobic digestion can be achieved by retaining microbial consortia inside the reactors using biofilm carriers. In this study, the performance of anaerobic reactors was assessed using natural organic materials i.e. luffa sponge, coconut husk fiber and wood chips as biofilm carriers. Anaerobic batch mode bioreactors comprising of carrier materials for biofilms and control bioreactor were run in parallel at mesophilic temperature (35 °C). Methane content, biogas yield, pH, volatile solids, chemical oxygen demand, VFA/alkalinity ratio and total organic carbon was measured before and after the experiment. Scanning electron microscopy was used to identify the morphology of the methanogenic bacteria present in the biofilms. Maximum methane concentration and volatile solids removal efficiency was obtained from luffa sponge reactor i.e. 77.7% and 82.6% respectively. Furthermore, determination of biokinetic parameters lag phase (ʎ) and production rate (R m ) was also performed using three kinetic models i.e. Modified Gompertz Model, Logistics growth model and Transference function model. Among the kinetic models, logistics growth model and modified Gompertz model provided the best fit with the experimental data providing the R 2 of 0.989 and 0.975 respectively.

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Applications of materials as additives in anaerobic digestion technology

Cited by 108 publications

References 91 publications

Review of biochar role as additive in anaerobic digestion processes

Review of biochar role as additive in anaerobic digestion processes

Anaerobic co-digestion of dairy raw by-products and Ulva sp. macroalgae: effect of organic and inorganic additives

Study on Natural Organic Materials as Biofilm Carriers for the Optimization of Anaerobic Digestion

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