Biotechnology Application of Pretreated Biomass

2019 ◽  
pp. 67-81
Author(s):  
Helen Treichel ◽  
Gislaine Fongaro ◽  
Thamarys Scapini ◽  
Aline Frumi Camargo ◽  
Fábio Spitza Stefanski ◽  
...  
Keyword(s):  
Pretreated Biomass ◽  
Biotechnology Application

scholarly journals Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1127
Author(s):  
Júnia Alves-Ferreira ◽  
Ana Lourenço ◽  
Francisca Morgado ◽  
Luís C. Duarte ◽  
Luísa B. Roseiro ◽  
...  
Keyword(s):  
Steam Distillation ◽  
Enzymatic Saccharification ◽  
Added Value ◽  
Cistus Ladanifer ◽  
Reaction Conditions ◽  
Zone Electrophoresis ◽  
Monomeric Composition ◽  
Capillary Zone ◽  
Soluble Lignin ◽  
Pretreated Biomass

Residues of Cistus ladanifer obtained after commercial steam distillation for essential oil production were evaluated to produce cellulose enriched solids and added-value lignin-derived compounds. The delignification of extracted (CLRext) and extracted and hydrothermally pretreated biomass (CLRtreat) was studied using two organosolv processes, ethanol/water mixtures (EO), and alkali-catalyzed glycerol (AGO), and by an alkali (sodium hydroxide) process (ASP) under different reaction conditions. The phenolic composition of soluble lignin was determined by capillary zone electrophoresis and by Py-GC/MS, which was also used to establish the monomeric composition of both the delignified solids and isolated lignin. The enzymatic saccharification of the delignified solids was also evaluated. The ASP (4% NaOH, 2 h) lead to both the highest delignification and enzymatic saccharification (87% and 79%, respectively). A delignification of 76% and enzymatic hydrolysis yields of 72% were obtained for AGO (4% NaOH) while EO processes led to lower delignification (maximum lignin removal 29%). The residual lignin in the delignified solids were enriched in G- and H-units, with S-units being preferentially removed. The main phenolics present in the ASP and AGO liquors were vanillic acid and epicatechin, while gallic acid was the main phenolic in the EO liquors. The results showed that C. ladanifer residues can be a biomass source for the production of lignin-derivatives and glucan-rich solids to be further used in bioconversion processes.

scholarly journals Cellulase digestibility of pretreated biomass is limited by cellulose accessibility

2007 ◽  
Vol 98 (1) ◽  
pp. 112-122 ◽  
Author(s):  
Tina Jeoh ◽  
Claudia I. Ishizawa ◽  
Mark F. Davis ◽  
Michael E. Himmel ◽  
William S. Adney ◽  
...  
Keyword(s):  
Cellulose Accessibility ◽  
Pretreated Biomass

Fermentative hydrogen production from pretreated biomass: A comparative study

2009 ◽  
Vol 100 (24) ◽  
pp. 6331-6338 ◽  
Author(s):  
I.A. Panagiotopoulos ◽  
R.R. Bakker ◽  
M.A.W. Budde ◽  
T. de Vrije ◽  
P.A.M. Claassen ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Comparative Study ◽  
Fermentative Hydrogen Production ◽  
Fermentative Hydrogen ◽  
Pretreated Biomass

Global and local neural network models in biotechnology: Application to different cultivation processes

1997 ◽  
Vol 83 (1) ◽  
pp. 1-11 ◽  
Author(s):  
M.Nazmul Karim ◽  
Toshiomi Yoshida ◽  
Sheyla L. Rivera ◽  
Victor M. Saucedo ◽  
Bernhard Eikens ◽  
...  
Keyword(s):  
Neural Network ◽  
Network Models ◽  
Neural Network Models ◽  
Global And Local ◽  
Biotechnology Application

scholarly journals Biosorption of Congo Red and Methylene Blue by pretreated waste Streptomyces fradiae biomass - Equilibrium, kinetic and thermodynamic studies

2018 ◽  
Vol 83 (1) ◽  
pp. 107-120 ◽  
Author(s):  
Zdravka Velkova ◽  
Gergana Kirova ◽  
Margarita Stoytcheva ◽  
Velizar Gochev
Keyword(s):  
Methylene Blue ◽  
Congo Red ◽  
Contact Time ◽  
Order Kinetic ◽  
Batch Experiments ◽  
Streptomyces Fradiae ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
Kinetic And Thermodynamic Studies ◽  
Pretreated Biomass

Pretreated waste Streptomyces fradiae biomass was utilized as an eco-friendly sorbent for Congo Red (CR) and Methylene Blue (MB) removal from aqueous solutions. The biosorbent was characterized by Fourier transform infrared spectroscopy. Batch experiments were conducted to study the effect of pH, biosorbent dosage, initial concentration of adsorbates, contact time and temperature on the biosorption of the two dyes. The equilibrium adsorption data were analysed using Freundlich and Langmuir models. Both models fitted well the experimental data. The maximum biosorption capacity of the pretreated Streptomyces fradiae biomass was 46.64 mg g-1 for CR and 59.63 mg g-1 for MB, at a pH 6.0, with the contact time of 120 min, the biosorbent dosage of 2 g dm-3 and the temperature of 298 K. Lagergren and Ho kinetic models were used to analyse the kinetic data obtained from different batch experiments. The biosorption of both dyes followed better the pseudo-second order kinetic model. The calculated values for ?G, ?S, and ?H indicated that the biosorption of CR and MB onto the waste pretreated biomass was feasible, spontaneous, and exothermic in the selected temperature range and conditions.

Sign in / Sign up

Export Citation Format

Share Document