scholarly journals A Whole-Slurry Fermentation Approach to High-Solid Loading for Bioethanol Production from Corn Stover

Agronomy ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1790 ◽  
Author(s):  
Pablo G. del Río ◽  
Patricia Gullón ◽  
F.R. Rebelo ◽  
Aloia Romaní ◽  
Gil Garrote ◽  
...  
Keyword(s):  
Corn Stover ◽  
Crop Residue ◽  
Solid Phase ◽  
Solid Loading ◽  
High Solid ◽  
High Solid Loading ◽  
Second Generation Bioethanol ◽  
Liquid Phases ◽  
Solid Phases ◽  
Whole Slurry

Corn stover is the most produced byproduct from maize worldwide. Since it is generated as a residue from maize harvesting, it is an inexpensive and interesting crop residue to be used as a feedstock. An ecologically friendly pretreatment such as autohydrolysis was selected for the manufacture of second-generation bioethanol from corn stover via whole-slurry fermentation at high-solid loadings. Temperatures from 200 to 240 °C were set for the autohydrolysis process, and the solid and liquid phases were analyzed. Additionally, the enzymatic susceptibility of the solid phases was assessed to test the suitability of the pretreatment. Afterward, the production of bioethanol from autohydrolyzed corn stover was carried out, mixing the solid with different percentages of the autohydrolysis liquor (25%, 50%, 75%, and 100%) and water (0% of liquor), from a total whole slurry fermentation (saving energy and water in the liquid–solid separation and subsequent washing of the solid phase) to employing water as only liquid medium. In spite of the challenging scenario of using the liquor fraction as liquid phase in the fermentation, values between 32.2 and 41.9 g ethanol/L and ethanol conversions up to 80% were achieved. This work exhibits the feasibility of corn stover for the production of bioethanol via a whole-slurry fermentation process.

scholarly journals Additive manufacturing of thin electrolyte layers via inkjet printing of highly-stable ceramic inks

2021 ◽  
Author(s):  
Zhongqi Zhu ◽  
Zhiyuan Gong ◽  
Piao Qu ◽  
Ziyong Li ◽  
Sefiu Abolaji Rasaki ◽  
...  
Keyword(s):  
Inkjet Printing ◽  
Polyacrylic Acid ◽  
Storage Period ◽  
Structural Quality ◽  
Solid Loading ◽  
Ultrasonic Dispersion ◽  
Promising Alternative ◽  
Printing Process ◽  
High Solid ◽  
High Solid Loading

AbstractInkjet printing is a promising alternative for the fabrication of thin film components for solid oxide fuel cells (SOFCs) due to its contactless, mask free, and controllable printing process. In order to obtain satisfying electrolyte thin layer structures in anode-supported SOFCs, the preparation of suitable electrolyte ceramic inks is a key. At present, such a kind of 8 mol% Y2O3-stabilized ZrO2 (8YSZ) electrolyte ceramic ink with long-term stability and high solid loading (> 15 wt%) seems rare for precise inkjet printing, and a number of characterization and performance aspects of the inks, such as homogeneity, viscosity, and printability, should be studied. In this study, 8YSZ ceramic inks of varied compositions were developed for inkjet printing of SOFC ceramic electrolyte layers. The dispersing effect of two types of dispersants, i.e., polyacrylic acid ammonium (PAANH4) and polyacrylic acid (PAA), were compared. The results show that ultrasonic dispersion treatment can help effectively disperse the ceramic particles in the inks. PAANH4 has a better dispersion effect for the inks developed in this study. The inks show excellent printable performance in the actual printing process. The stability of the ink can be maintained for a storage period of over 30 days with the help of initial ultrasonic dispersion. Finally, micron-size thin 8YSZ electrolyte films were successfully fabricated through inkjet printing and sintering, based on the as-developed high solid loading 8YSZ inks (20 wt%). The films show fully dense and intact structural morphology and smooth interfacial bonding, offering an improved structural quality of electrolyte for enhanced SOFC performance.

scholarly journals Fabrication of High Solid Loading Silicon Carbide Slurry Using UV Curable Resin

2017 ◽  
Vol 54 (9) ◽  
pp. 576-581
Author(s):  
Seizo Obata ◽  
Sosuke Azuma ◽  
Kenji Tateishi ◽  
Yasuhiro Shinoda ◽  
Michiyuki Yoshida ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Solid Loading ◽  
Uv Curable ◽  
High Solid ◽  
High Solid Loading ◽  
Uv Curable Resin

Study of LSGM Slurry for Gel-Tape-Casting

2007 ◽  
Vol 280-283 ◽  
pp. 751-752 ◽  
Author(s):  
Sheng Cheng ◽  
Jiang Hong Gong ◽  
Zhong Tai Zhang ◽  
Zi Long Tang
Keyword(s):  
Tape Casting ◽  
Processing Parameters ◽  
Solid Loading ◽  
High Solid ◽  
High Solid Loading ◽  
Powder Properties

A novel process, gel-tape-casting, is employed to fabricate LSGM thin dense sheets in aqueous AM system. The influences of powder properties, dispersant and other additives were discussed and relevant processing parameters were also explored. The slurry of LSGM with a high solid loading about 33 vol.% was successfully obtained.

Preparation of high solid loading and low viscosity ceramic slurries for photopolymerization-based 3D printing

2019 ◽  
Vol 45 (9) ◽  
pp. 11549-11557 ◽  
Author(s):  
Zhangwei Chen ◽  
Junjie Li ◽  
Chengbo Liu ◽  
Yu Liu ◽  
Junyi Zhu ◽  
...  
Keyword(s):  
3D Printing ◽  
Solid Loading ◽  
High Solid ◽  
High Solid Loading ◽  
Low Viscosity
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