Bioresource Technology

The application of pressure filtration in microalgae harvesting requires chemical treatment in order to reduce membrane fouling and increase water flux. Surfactant has shown potential to enhance microalgae dewaterability by releasing extracellular polymeric substances (EPS). In this study, the effect of three surfactants including anionic sodium dodecyl sulfate (SDS), non-ionic triton X-100 and cationic cetyl trimethyl ammonium bromide (CTAB) on dewaterability of Chlamydomonas sp. was investigated. Filtration fluxes and biomass concentrations were used to evaluate the microalgae dewaterability. Based on the results, SDS and Triton X-100 had negative effect on the dewaterability of microalgae biomass. However, CTAB improved the dewaterability by decreasing negative charge of microalgae biomass. The optimum dosage of CTAB was found to be 1500 mg/L, resulted in 95.8% and 140% improvement on average water flux and biomass concentration, respectively.

Data for the Production of molecular weight fractionated hemicelluloses hydrolyzates from spent coffee grounds combining hydrothermal extraction and a multistep ultrafiltration/diafiltration

Measurements inside the differents photobioreactor

Raw data of chemical and microbiological data from raceway and bubble column monitoring campaign

This file contains all the experimental data obtained related with the manuscript "Polyhydroxybutyrate and glycogen production in photobioreactors inoculated with wastewater borne cyanobacteria monocultures". The file is divided in different spreadsheets. Spreadsheets are grouped in colours depending at which photobioreactor they correspond to. Orange correspond to Synechocystis sp. results, purple to Synechococcus sp results and blue to mixed culture. Each reactor has three spread sheets where the results corresponding to the concentrations of different forms of carbon, nutrients and the total suspended solids can be found. Finally, there is a general spreadsheet with the PHB and Glycogen results from all PBRs.

For IFAS

Fig. 1 Hydrolysis of steam explosion treated cotton stalk in cellulase, xylanase, and cellulase/xylanase solutions. (a. SE-1MPa, b. SE-2.4MPa). Fig. 1 Hydrolysis of steam explosion treated cotton stalk in cellulase, xylanase, and cellulase/xylanase solutions. (a. SE-1MPa, b. SE-2.4MPa). Fig. 2 Hydrolysis of SE/acid treated cotton stalk in cellulase/xylanase solutions.(a. HCl, b.CH3COOH). Enzyme digestion supernatant at 72 h were collected for HPLC analysis). SE-2.4MPa:Steam explosion pressure 2.4MPa (square);SE-1MPa:Steam explosion pressure 1MPa(circle); control HT-125℃: High temperature acid pretreatment at 125℃(pentagram). Fig. 3 Hydrolysis of SE/acid treated cotton stalk in cellulase/xylanase solutions.(a. NaOH, b. NH3•H2O). Enzyme digestion supernatant at 72 h were collected for HPLC analysis. SE-2.4MPa:Steam explosion pressure 2.4MPa (square);SE-1MPa:Steam explosion pressure 1MPa(circle); control HT-125℃:High temperature acid pretreatment at 125 ℃(pentagram). Fig. 4 Correlation coefficient between sugar yield and lignin monomer content in SE/acid and SE/alkali treated cotton stalk samples (n=32). Table 1 Chemical composition of cotton stalk samples and reducing sugar released from hydrolysis of steam explosion treated cotton stalk samples in cellulase/xylanase solution Table 2 The monolignin composition of cotton stalk samples

Standard curve of alkali lignin and GC-MS data

The data includes raw files for plotting and methods for analyzing the data, as well as high-throughput reports.