Bioethanol production from industrial algae waste

Alfonsín, Víctor; Maceiras, R.; Gutiérrez, Claudio Avalos

doi:10.1016/j.wasman.2019.03.019

Cited by 69 publications

(34 citation statements)

References 28 publications

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“…The hydrolysis yield is determined as the amount of extracted reducing sugars per total amount of theoretical glucose in the biomass according to the following equation [68,69]:…”

Section: Hydrolysismentioning

confidence: 99%

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Review of Solvents Based on Biomass for Mitigation of Wax Paraffin in Indonesian Oilfield

et al. 2019

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This paper presents a review of the expectations and challenges of using biomass in the prevention and slowing of paraffin wax deposition that takes place during the crude oil production process. The inhibition of the deposition process involves the use of solvents from biomass that are generally available around the crude oil production field. The processes used to scale down the precipitation of wax include mixing crude oil with the manufacturer's solvent composed of toluene and xylene. The goal is to assess solvents sourced from biomass that are capable to slow down the wax deposition process. Wax appearance temperature is an important characteristic to evaluate the possible wax precipitation of a given fluid. Wax precipitation can be reduced by using some chemical additives, often called the pour point depressant. This additive is expected to be produced from local biomass which can compete with solvents currently produced on the market.

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“…The hydrolysis yield is determined as the amount of extracted reducing sugars per total amount of theoretical glucose in the biomass according to the following equation [68,69]:…”

Section: Hydrolysismentioning

confidence: 99%

“…Finally, the physical properties of the obtained residue after acid hydrolysis were tested. This analysis included moisture, calorific value, and elemental, inorganic compounds, and immediate analysis according to the standards [68].…”

Section: Hydrolysismentioning

confidence: 99%

Review of Solvents Based on Biomass for Mitigation of Wax Paraffin in Indonesian Oilfield

et al. 2019

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“…Short-and long-chain n-alkanes can be produced from synthesis gas by chemo-and biocatalytic processes [3,4]. The main source of alcohols is fermentation which provides positive energy balance [5,6]. It is known that alcohol/diesel blend utilization improves the performance and lowers the pollutant emissions of internal combustion engines [7,8].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of material property estimating methods for n-alkanes, 1-alcohols, and methyl esters for droplet evaporation calculations

et al. 2021

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Modeling of heat and mass transfer in liquid fuel combustion requires several material properties in a wide temperature and pressure range. The unavailable data are commonly patched with various estimation methods. In this paper, group contribution methods (GCM) and law of corresponding states (LCS) were analyzed for estimating material properties of n-alkanes (up to C10H22 and C12H26), 1-alcohols (up to C10H22O), and methyl esters (up to C19H38O2 and C19H36O2). These were compared to reference data to evaluate their applicability. LCS suggested by Poling et al. provides proper estimation for the acentric factor. GCM of Joback accurately estimates normal boiling point, critical properties, and specific heat capacity of the vapor-phase, the latter was corrected for methanol, however, GCM of Constantinou is more accurate for critical pressure of methyl esters. GCM of Ruzicka is suitable for estimating liquid-phase specific heat capacity. This method was updated for methanol. GCM of Elbro gives a proper estimation for liquid-phase density, while LCS of Lucas estimates vapor-phase viscosity properly. LCS of Chung and the modified Eucken method for vapor-phase and GCM of Sastri for liquid-phase thermal conductivity are appropriate. Considering the gas-phase mutual diffusion coefficient, the method of Fuller provides the best estimation, while LCS methods of Riedel and Chen are suitable for the enthalpy of vaporization at the normal boiling point.

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“…The microalgae have good prospects to be developed as a raw material for biofuels production. Some of the biofuels that can be produced from them are biodiesel, bioethanol, and biogas [4]. They have the ability to grow quickly and do not require a large area for production activities, do not compete with foodstuffs and can grow in sea water, fresh water, or wastewater [5].…”

Section: Introductionmentioning

confidence: 99%

The Drying Rate of Chlorella pyrenoidosa Using an Oven in Bioethanol Production

Megawati

Damayanti

Radenrara

et al. 2021

ARFMTS

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The production of bioethanol from microalgae goes through several stages, including cultivation, harvesting, drying, storage, and conversion to bioethanol. Nearly 40% of the total energy consumed in the bioethanol production from microalgae is from drying. This research aims to study the drying rate model of Chlorella pyrenoidosa using an oven. The drying is carried out at the temperatures of 50, 60, and 70 oC. The initial moisture content of Chlorella pyrenoidosa was 317.798% dry weight. The results showed that at the temperatures of 50, 60, and 70 oC, the critical moisture content was 9.108, 7.583, and 6.93% dry weight, while the equilibrium moisture content was 3.172, 3.158, and 3.109% dry weight. The most optimal drying is at 70 oC and the drying rate gets faster as the temperature does too. The Page model is better at describing the drying rate of Chlorella pyrenoidosa using an oven than the Newton model. The drying speed constants (k) were 0.00056, 0.00061, and 0.00208, at 50, 60, and 70 oC, respectively.

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Bioethanol production from industrial algae waste

Cited by 69 publications

References 28 publications

Review of Solvents Based on Biomass for Mitigation of Wax Paraffin in Indonesian Oilfield

Review of Solvents Based on Biomass for Mitigation of Wax Paraffin in Indonesian Oilfield

Evaluation of material property estimating methods for n-alkanes, 1-alcohols, and methyl esters for droplet evaporation calculations

The Drying Rate of Chlorella pyrenoidosa Using an Oven in Bioethanol Production

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