The Role of Anaerobic Digestion in Algal Biorefineries: Clean Energy Production, Organic Waste Treatment, and Nutrient Loop Closure

Ramos-Suárez, Juan Luis; Arroyo, N. Carreras; González‐Fernández, Cristina

doi:10.1007/978-81-322-2641-3_5

Cited by 13 publications

(16 citation statements)

References 112 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second step (acidogenesis) transforms the products of the hydrolytic process into volatile fatty acids (VFAs) such as propionic acid, butyric acid, acetic acid and ethanol by the action of the acidogenic bacteria [28][29][30]. They have characteristics of strong and fast growth with a minimum doubling time of 30 min [31]. Acidogenesis can be described by Eq.…”

Section: Biochemical Mechanism Of Biogas Productionmentioning

confidence: 99%

“…(6)-(9) [14,15,18,35]. The growth kinetic of acetogenesis is slower than which of acidogenesis, with a minimal doubling time in the range of 1.5-4 d [31]. Acetogens are strict anaerobes, the present of oxidants like oxygen or nitrate is toxic [26], and they work better in acid-weak environment (pH from 6.0 to 6.2) [31].…”

Section: Biochemical Mechanism Of Biogas Productionmentioning

confidence: 99%

“…(11) [20,26,37]. While the minimum doubling time of hydrogenotrophic bacteria is in the range of 4-12 h, acetotrophic bacteria have a much lower maximum growth rate with doubling times of 2-3 d [31,37]. Generally, methanogens are extremely sensitive to pH condition, the presence of oxygen, and other factors such as free ammonia (FAN), H 2 S, and VFAs [15].…”

Section: Biochemical Mechanism Of Biogas Productionmentioning

confidence: 99%

“…Generally, methanogens are extremely sensitive to pH condition, the presence of oxygen, and other factors such as free ammonia (FAN), H 2 S, and VFAs [15]. They cannot work at pH condition lower than 6.2, even die in the pH condition under 6.0 [15,18], and can be inhibited by releasing free ammonia (FAN) when pH-value is over > 7.8 [31]. The optimal pH-value was often reported at neutral environment (7.0-7.2) [11,18,38,39].…”

Section: Biochemical Mechanism Of Biogas Productionmentioning

confidence: 99%

See 3 more Smart Citations

A review of anaerobic digestion systems for biodegradable waste: Configurations, operating parameters, and current trends

Dinh

Fujiwara

Tho

et al. 2019

Environmental Engineering Research

227

105

View full text Add to dashboard Cite

With benefits to the human health, environment, economy, and energy, anaerobic digestion (AD) systems have attracted remarkable attention within the scientific community. Anaerobic digestion system is created from (bio)reactors to perform a series of bi-metabolism steps including hydrolysis/acidogenesis, acetogenesis, and methanogenesis. By considering the physical separation of the digestion steps above, AD systems can be classified into single-stage (all digestion steps in one reactor) and multi-stage (digestion steps in various reactors). Operation of the AD systems does not only depend on the type of digestion system but also relies on the interaction among growth factors (temperature, pH, and nutrients), the type of reactor, and operating parameters (retention time, organic loading rate). However, these interactions were often reviewed inadequately for the single-stage digestion systems. Therefore, this paper aims to provide a comprehensive review of both single-stage and multi-stage systems as well as the influence of the growth factors, operating conditions, and the type of reactor on them. From those points, the advantages, disadvantages, and application range of each system are well understood.

show abstract

Section: Biochemical Mechanism Of Biogas Productionmentioning

confidence: 99%

Section: Biochemical Mechanism Of Biogas Productionmentioning

confidence: 99%

Section: Biochemical Mechanism Of Biogas Productionmentioning

confidence: 99%

Section: Biochemical Mechanism Of Biogas Productionmentioning

confidence: 99%

See 2 more Smart Citations

A review of anaerobic digestion systems for biodegradable waste: Configurations, operating parameters, and current trends

Dinh

Fujiwara

Tho

et al. 2019

Environmental Engineering Research

227

105

View full text Add to dashboard Cite

show abstract

“…The most probable option for converting and recovering cyanobacterial and microalgal biomass‐contained nitrogen and phosphorous is anaerobic digestion (AD) . AD is a well‐established method for converting complex organic matter into methane and CO 2 . An overview of the processes involved in the AD of microalgae and cyanobacteria can be found in a review by Gonzalez‐Fernandez et al Reasons that AD is an attractive option for recovering photoautotrophic microbial biomass include: the methane produced from AD could be used to supplement the energy requirements of the production facility, the CO 2 produced could be used for microalgae and cyanobacteria cultivation, and the ammonia and phosphorous containing effluent could be recycled to recover the nutrients .…”

Section: Improvements To Cultivation Mediummentioning

confidence: 99%

Photobioreactor cultivation strategies for microalgae and cyanobacteria

Johnson

Katuwal

Anderson

et al. 2018

Biotechnology Progress

View full text Add to dashboard Cite

The current burden on fossil-derived chemicals and fuels combined with the rapidly increasing global population has led to a crucial need to develop renewable and sustainable sources of chemicals and biofuels. Photoautotrophic microorganisms, including cyanobacteria and microalgae, have garnered a great deal of attention for their capability to produce these chemicals from carbon dioxide, mineralized water, and solar energy. While there have been substantial amounts of research directed at scaling-up production from these microorganisms, several factors have proven difficult to overcome, including high costs associated with cultivation, photobioreactor construction, and artificial lighting. Decreasing these costs will substantially increase the economic feasibility of these production processes. Thus, the purpose of this review is to describe various photobioreactor designs, and then provide an overview on lighting systems, mixing, gas transfer, and the hydrodynamics of bubbles. These factors must be considered when the goal of a production process is economic feasibility. Targets for improving microalgae and cyanobacteria cultivation media, including water reduction strategies will also be described. As fossil fuel reserves continue to be depleted and the world population continues to increase, it is imperative that renewable chemical and biofuel production processes be developed toward becoming economically feasible. Thus, it is essential that future research is directed toward improving these processes. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 34:811-827, 2018.

show abstract