Investigation into the physical–chemical properties of chemically pretreated sugarcane bagasse

Cruz, Glauber; Monteiro, Patrícia A. S.; Braz, Carlos E. M.; Seleghim, Paulo; Crnkovic, Paula Manoel

doi:10.1007/s10973-018-7041-1

Cited by 38 publications

(11 citation statements)

References 57 publications

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“…To date, corn and sugarcane are the main feedstock used in the biofuel production (Moshi et al, 2015;Cruz et al, 2018); this is attributed to their relatively simple conversion to biofuel as well as availability of infrastructure for planting, harvesting, and processing which are already in place. Nevertheless, their large scale cultivation for biofuel production is associated with issues such as decrease in food availability and dramatically increase in food prices worldwide (Calabr et al, 2017;Jigar et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Enhancement of anaerobic batch digestion of spineless cacti (Opuntia ficus indica) feedstock by aerobic pre-treatment

Myovela¹,

Mshandete²,

Imathiu³

2019

Afr. J. Biotechnol.

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One of the best options for African countries to meet rural energy needs is to grow carefree crassulacean acid metabolism plants on a massive scale in waste lands. This can enable bioenergy production without disrupting food supplies and hence sustainable energy supply for the future. Opuntia ficus indica is an ideal plant for arid regimes but has barely been studied as a potential bioenergy source. This study investigated the effect of aerobic pretreatment on methane yield of O. ficus indica biomass. This effect was investigated in batch bioreactors which were exposed to aerobic conditions by varying time from 3 to 72 h before the start of anaerobic digestion. Reducing sugar content and dissolved oxygen levels after pretreatment period was analyzed. Reducing sugar content in bioreactors increased with increase in pretreatment time from 12.22 ±0.69 to 59.08 ± 5.35 g/L in the untreated and 72 h pretreated batches, respectively. Methane yields after pretreatment were observed to range from 0.286 to 0.702 L/kg volatile solids at 9 and 72 h of pre-treatment, respectively. A 9 h pretreatment of feedstock prior to anaerobic digestion yielded 123% higher methane yield when compared to that without pre-treatment. The findings that there was an increase in reducing sugar production and methane yield at 9 h of aerobic pre-treatment suggests that there was increased hydrolysis with pretreatment. Hence, short pre-treatment period could be an option to increasing solubilization of cladodes and promoting methane productivity. Therefore, pre-aeration of O. ficus indica, was shown to be an effective method for enhancing both its digestibility and improved methane yield during anaerobic digestion.

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Section: Introductionmentioning

confidence: 99%

Enhancement of anaerobic batch digestion of spineless cacti (Opuntia ficus indica) feedstock by aerobic pre-treatment

Myovela¹,

Mshandete²,

Imathiu³

2019

Afr. J. Biotechnol.

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“…Hydroxides of sodium (NaOH), potassium (KOH), calcium (Ca(OH) 2 ) and ammonium (NH 4 OH) are the alkali pretreatments used more for bioethanol production (Rabelo, 2010;Rezende et al, 2011;Cruz et al, 2017). The Ca(OH) 2 used in this process can be recovered using lime kiln technology (Cai et al, 2017).…”

Section: Chemical Pretreatmentmentioning

confidence: 99%

“…The Ca(OH) 2 used in this process can be recovered using lime kiln technology (Cai et al, 2017). This method is also known for causing chemical swelling in the cellulose fibrous (Mosier et al, 2005;Cruz et al, 2017), in which occurs saponification reactions and salvation, leading to the disruption of the cross-links between hemicellulose and other components; hence, increasing the biomass porosity (Sun and Cheng, 2002;Cruz et al, 2017). More specifically, cross bonds between ester, lignin and xylan are disrupted, producing the delignification process.…”

Section: Chemical Pretreatmentmentioning

confidence: 99%

“…Acid pretreatment, in particular, using sulfuric acid (H 2 SO 4 ) is the most employed chemical pretreatment for lignocellulosic biomass, where polysaccharides (mainly hemicellulose) are hydrolyzed to monosaccharides, leading to higher accessibility of cellulose to enzyme hydrolysis (Rabelo, 2010;Rezende et al, 2011;Cruz et al, 2017). Acid pretreatment can be performed either under low acid concentration and high temperature or under higher acid concentration and lower temperature (Taherzadeh and Karimi, 2008).…”

Section: Chemical Pretreatmentmentioning

confidence: 99%

“…Several studies have determined the physicochemical characteristics of crop residues, such as corn cobs and straws, rice and coffee husks, pine sawdust, olive and tucumã seeds, sugarcane bagasse among others (Graham et al, 2007;Donaldson et al, 2001;Berndes et al, 2003;Ezui et al, 2015;Cruz et al, 2017;Veiga et al, 2016). However, detailed information on the use of cassava harvest residues for the different energetic applications is still missing.…”

Section: Introductionmentioning

confidence: 99%

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Application of cassava harvest residues (Manihot esculenta Crantz) in biochemical and thermochemical conversion process for bioenergy purposes: A literature review

Rodrigues¹,

Cruz²,

Souza³

et al. 2018

Afr. J. Biotechnol.

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Bioenergy production from biomass and agricultural wastes has gained significant interest due to rising fossil fuel prices and their decrease in air pollutant emissions. This review paper evaluates the state-of-art for the several applications from cassava harvest residues and their use in bioenergy industry, using different thermochemical and biochemical processes. Regarding the great available literature for this biomass, several pretreatment techniques, including mechanical, chemical, biological, thermal, ultrasonic and wet explosion were observed. The use of cassava harvest residues for the biochemical pretreatments, for example, hydrolysis, fermentation and thermochemical processes, such as direct combustion, gasification, pyrolysis, fast pyrolysis and oxy-fuel combustion was also discussed. Therefore, studies are necessary in order to understand that the use of cassava residues in thermal processes can increase the viability of this feedstock for biofuels production and/or in power co-firing units. After extensive study, it was observed that informations are still lacking about the use of cassava harvest residues in other conversion processes, thus, new studies to discover more on the use of this biomass, in order to extend their application in the bioenergy market is encouraged.

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Green Adhesives for Biomedical Applications

et al. 2020

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Investigation into the physical–chemical properties of chemically pretreated sugarcane bagasse

Cited by 38 publications

References 57 publications

Enhancement of anaerobic batch digestion of spineless cacti (Opuntia ficus indica) feedstock by aerobic pre-treatment

Enhancement of anaerobic batch digestion of spineless cacti (Opuntia ficus indica) feedstock by aerobic pre-treatment

Application of cassava harvest residues (Manihot esculenta Crantz) in biochemical and thermochemical conversion process for bioenergy purposes: A literature review

Green Adhesives for Biomedical Applications

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