Anaerobic Co-digestion of the Energy Crop Sida hermaphrodita and Microalgae Biomass for Enhanced Biogas Production

Dębowski, Marcin; Zieliński, Marcin; Kisielewska, Marta; Krzemieniewski, M.

doi:10.1007/s41742-017-0024-4

Cited by 32 publications

(14 citation statements)

References 31 publications

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“…However, when silage made from Sida biomass was mixed with microalgal species, the amount of biogas and methane produced reached 595 and 352 mL g −1 volatile solids. When microalgae biomass comprised 40 and 60 % of the substrate, the highest gas yields were obtained (Dębowski et al ., ).…”

Section: The Use Of Sida As Biofuel: Biophysical and Biochemical Propmentioning

confidence: 97%

Virginia mallow (Sida hermaphrodita (L.) Rusby) as perennial multipurpose crop: biomass yields, energetic valorization, utilization potentials, and management perspectives

Nahm

Morhart

2018

GCB Bioenergy

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This article reviews the scholarly literature dealing with the perennial multipurpose crop Virginia mallow (Sida hermaphrodita (L.) Rusby; Sida in the following). In regions dominated by intensive agricultural management practices, growing Sida holds the potential to combine ecosystem services such as decreasing soil erosion, reducing nitrate leaching as well as enhancing biodiversity, with economic profit for the farmer. After promising biomass yields of Sida were reported from studies performed in Poland about 15 years ago, the interest in this plant species has continuously increased, and different utilization pathways were examined, predominantly by researchers in Poland and Germany. At present, however, a comprehensive overview that summarizes the different lines of research performed regarding the use of Sida is lacking. This review aims at closing this gap. After providing background information on Sida, we summarize the main results obtained from investigations concerning biomass yields, fertilization effects, key findings concerning direct combustion, biogas production, steam gasification, phytoremediation, and alternative utilization pathways. Thereafter, we highlight important aspects of Virginia mallow cultivation practices, including first estimates regarding the costs involved. Finally, we point to existing research gaps. Summarizing the available literature on Sida, we aim at raising the interest of scientists and farmers in this plant species further and to show where future research might tie in with, as the successful cultivation of Sida might represent a worthwhile strategy to transform current agricultural practices in Central Europe into approaches that are more sustainable and resilient against future challenges.

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Section: The Use Of Sida As Biofuel: Biophysical and Biochemical Propmentioning

confidence: 97%

Virginia mallow (Sida hermaphrodita (L.) Rusby) as perennial multipurpose crop: biomass yields, energetic valorization, utilization potentials, and management perspectives

Nahm

Morhart

2018

GCB Bioenergy

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“…Some studies have focussed on improving the biogas and methane yield by mixing S. hermaphrodita with other biomass. Dębowski et al [150] mixed S. hermaphrodita silage and microalgae (Chlorella sp. and Scenedesmus sp.)…”

Section: Growing Sida Hermaphrodita and Silphium Perfoliatum As Solidmentioning

confidence: 99%

“…The highest methane yields are typically achieved by having two harvests rather than one harvest per year [17]. The application of pre-treatments can increase methane yields, but they incur additional energy costs [138,148,150]. For example, Kisielewska et al [149] concluded that the increase in biogas and methane yields after ultrasound pre-treatments could not be justified from an energy balance perspective.…”

Section: Energy Balances and Lcasmentioning

confidence: 99%

Two Novel Energy Crops: Sida hermaphrodita (L.) Rusby and Silphium perfoliatum L.—State of Knowledge

et al. 2020

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Current global temperature increases resulting from human activity threaten many ecosystems and societies, and have led to international and national policy commitments that aim to reduce greenhouse gas emissions. Bioenergy crops provide one means of reducing greenhouse gas emissions from energy production and two novel crops that could be used for this purpose are Sida hermaphrodita (L.) Rusby and Silphium perfoliatum L. This research examined the existing scientific literature available on both crops through a systematic review. The data were collated according to the agronomy, uses, and environmental benefits of each crop. Possible challenges were associated with high initial planting costs, low yields in low rainfall areas, and for Sida hermaphrodita, vulnerability to Sclerotinia sclerotiorum. However, under appropriate environmental conditions, both crops were found to provide large yields over sustained periods of time with relatively low levels of management and could be used to produce large energy surpluses, either through direct combustion or biogas production. Other potential uses included fodder, fibre, and pharmaceutical uses. Environmental benefits included the potential for phytoremediation, and improvements to soil health, biodiversity, and pollination. The review also demonstrated that environmental benefits, such as pollination, soil health, and water quality benefits could be obtained from the use of Sida hermaphrodita and Silphium perfoliatum relative to existing bioenergy crops such as maize, whilst at the same time reducing the greenhouse gas emissions associated with energy production. Future research should examine the long-term implications of using Sida hermaphrodita and Silphium perfoliatum as well as improve knowledge on how to integrate them successfully within existing farming systems and supply chains.

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“…Biomass energy has been recognised as one of the options that will play an important role in future energy scenarios, and a recently emerging strategy is to convert biomass into clean energy fuels via biorefinery technology [3]. Currently, biorefineries are mainly based on energy crops, however, the main concern in using energy crops for the bioenergy market is that their production on agricultural land may detrimentally affect global food supplies [4]. Compared to energy crops, using microalgae for biofuel production has become an alternative in order to reduce competition with the food industry.…”

Section: Introductionmentioning

confidence: 99%

Renewable energy: evaluation of low energy demand pre‐treatments to optimise methane production from microalgae

Zhang

Caldwell

Sallis

2019

IET Renewable Power Generation

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Anaerobic digestion (AD) of microalgae is a sustainable process to produce methane-rich biogas for bioenergy production. However, the rigid cell walls of microalgae protect them against the attack from hydrolytic bacteria, and consequently prevent efficient biodegradability and lower methane production. In this study, the effects of low energy demand enzymatic and low-temperature thermo-alkaline pre-treatments on microalgae AD were investigated in batch biochemical methane potential tests. The results found that methane yields were significantly enhanced by both pre-treatments. Microalgae Chlorella vulgaris (C. vulgaris) after enzymatic pre-treatment enhanced methane yields the most, by 22-162%, whilst C. vulgaris pre-treated by thermo-alkaline pre-treatment improved methane yields by 4-26%. In enzymatic pre-treatment, C. vulgaris pretreated with mixed enzymes showed higher methane yields compared to single enzymes. In low-temperature thermo-alkaline pre-treatment, the level of enhancement in methane yields depended on the alkaline dosage and pre-treatment temperature, but the high alkaline dosages were associated with limitations such as a prolonged lag phase in the digestion process. From an energy viewpoint, both pre-treatments showed positive energy balances for the majority of experimental conditions, and therefore both pre-treatments are considered to be energetically efficient methods to pre-treat microalgae for methane production via AD.

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Anaerobic Co-digestion of the Energy Crop Sida hermaphrodita and Microalgae Biomass for Enhanced Biogas Production

Cited by 32 publications

References 31 publications

Virginia mallow (Sida hermaphrodita (L.) Rusby) as perennial multipurpose crop: biomass yields, energetic valorization, utilization potentials, and management perspectives

Virginia mallow (Sida hermaphrodita (L.) Rusby) as perennial multipurpose crop: biomass yields, energetic valorization, utilization potentials, and management perspectives

Two Novel Energy Crops: Sida hermaphrodita (L.) Rusby and Silphium perfoliatum L.—State of Knowledge

Renewable energy: evaluation of low energy demand pre‐treatments to optimise methane production from microalgae

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