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You searched for: Journal ACS sustainable chemistry Remove constraint Journal: ACS sustainable chemistry Publication Year 2015 Remove constraint Publication Year: 2015 Source 2015 v.3 no.9 Remove constraint Source: 2015 v.3 no.9 Subject temperature Remove constraint Subject: temperature Text Availability Citation in PubAg Remove constraint Text Availability: Citation in PubAg
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1. Gel-Like Dispersions of HMDI-Cross-Linked Lignocellulosic Materials in Castor Oil: Toward Completely Renewable Lubricating Grease Formulations

Author:
Gallego, R.; Arteaga, J. F.; Valencia, C.; Díaz, M. J.; Franco, J. M.
Source:
ACS sustainable chemistry 2015 v.3 no.9 pp. 2130-2141
ISSN:
2168-0485
Subject:
atomic force microscopy; castor oil; cellulose; crosslinking; diameter; dispersions; friction; green chemistry; lignocellulose; lithium; lubricants; pulp; renewable resources; rheological properties; temperature; thickeners; vegetable oil
Abstract:
... In this work, several lignocellulose pulps from different origins and/or submitted to different treatments were cross-linked with hexamethylene diisocyanate (HMDI) and further dispersed in castor oil in order to obtain gel-like formulations based on renewable resources, which can be potentially applicable as semisolid lubricants. The rheological and tribological properties attained as well as phys ...
DOI:
10.1021/acssuschemeng.5b00389

2. In Situ Formed Ionic Liquids in Polyol Esters as High Performance Lubricants for Steel/Steel Contacts at 300 °C

Author:
Wu, Xinhu; Liu, Junming; Zhao, Qin; Zhang, Ming; Zhao, Gaiqing; Wang, Xiaobo
Source:
ACS sustainable chemistry 2015 v.3 no.9 pp. 2281-2290
ISSN:
2168-0485
Subject:
X-ray photoelectron spectroscopy; chemical bonding; energy-dispersive X-ray analysis; esters; ferric oxide; ferrous sulfate; friction; ionic liquids; iron; lithium; lubricants; mixing; oils; oleic acid; polyols; scanning electron microscopy; steel; temperature
Abstract:
... In situ formed ionic liquids (ILs) as high temperature lubricants can be obtained by mixing polyol esters (pentaerythritol oleate or trihydroxymethylpropyl trioleate) with lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) in molar ratios of 1/0.5, 1/1 and 1/1.5. Thermal and rheological analysis indicate that the in situ formed ILs, [Li(polyol ester)]TFSI, with various molar ratios are more resist ...
DOI:
10.1021/acssuschemeng.5b00566

3. Kinetic Analysis of a Crude Enzyme Extract Produced via Solid State Fermentation of Bakery Waste

Author:
Han, Wei; Lam, Wan Chi; Melikoglu, Mehmet; Wong, Man Tung; Leung, Hoi Ting; Ng, Chi Leung; Yan, Ping; Yeung, Suet Yu; Lin, Carol Sze Ki
Source:
ACS sustainable chemistry 2015 v.3 no.9 pp. 2043-2048
ISSN:
2168-0485
Subject:
Aspergillus awamori; Aspergillus oryzae; bioprocessing; biotransformation; breads; cakes; food waste; glucan 1,4-alpha-glucosidase; glucose; hydrolysates; hydrolysis; kinetics; pastries; solid state fermentation; temperature; thermodynamics; value-added products
Abstract:
... In this study, glucoamylase extract was produced from various bakery wastes under solid state fermentation by Aspergillus awamori and Aspergillus oryzae. The highest glucoamylase activities obtained from bread and cake waste with A. awamori were 240.7 U/g of bread (db) and 134.9 U/g of cake (db), respectively, and 83.3 U/g of pastry (db) using A. oryzae. Kinetic studies showed that glucoamylase ob ...
DOI:
10.1021/acssuschemeng.5b00323

4. Kinetic Modeling of Switchgrass-Derived Xylose Oligomers Degradation during Pretreatment in Dilute Acid or in Water

Author:
Lau, Ching-Shuan; Bunnell, Kris; Carrier, Danielle Julie
Source:
ACS sustainable chemistry 2015 v.3 no.9 pp. 2030-2035
ISSN:
2168-0485
Subject:
Panicum virgatum; enzymatic hydrolysis; fermentation; formic acid; furfural; hemicellulose; manufacturing; models; sulfuric acid; temperature; xylose
Abstract:
... Switchgrass hemicellulose can be converted into sugars, such as xylose, for biobased product manufacturing. However, during pretreatment, the hemicellulose can also be converted into xylose oligomers, furfural and formic acid, which are detrimental to subsequent enzymatic hydrolysis and fermentation. Pretreatment conditions that maximize xylose production from hemicellulose, while also minimizing ...
DOI:
10.1021/acssuschemeng.5b00298

5. Liquefaction of Lignocellulose in Fractionated Light Bio-Oil: Proof of Concept and Techno-Economic Assessment

Author:
Kumar, Shushil; Lange, Jean-Paul; Rossum, Guus V.; Kersten, Sascha R. A.
Source:
ACS sustainable chemistry 2015 v.3 no.9 pp. 2271-2280
ISSN:
2168-0485
Subject:
Pinus; biofuels; distillation; energy; fractionation; lignocellulose; liquefaction; oils; petroleum; prices; recycling; solvents; temperature; wood
Abstract:
... The direct thermal liquefaction of lignocellulose can provide a biocrude that could be used as a precursor for biofuels. However, earlier attempts to use the whole reactor effluent as a liquefaction medium, by recycling it to the liquefaction reactor, were hampered by the buildup of heavy products. This paper reports on the integration of the liquefaction reaction and the fractionation of the reac ...
DOI:
10.1021/acssuschemeng.5b00547

6. Meso/Macroporous Silica from Miscanthus, Cereal Remnant Pellets, and Wheat Straw

Author:
Ahmad Alyosef, Hallah; Schneider, Denise; Wassersleben, Susan; Roggendorf, Hans; Weiß, Michael; Eilert, André; Denecke, Reinhard; Hartmann, Ingo; Enke, Dirk
Source:
ACS sustainable chemistry 2015 v.3 no.9 pp. 2012-2021
ISSN:
2168-0485
Subject:
Miscanthus; X-radiation; X-ray diffraction; adsorption; agricultural wastes; biomass; carbon; combustion; drying; energy crops; fluorescence; furnaces; heat treatment; macropores; mercury; microstructure; nitrogen; organic compounds; pellets; porous media; scanning electron microscopy; silica; sulfuric acid; temperature; thermal analysis; washing; wheat straw
Abstract:
... In the present study, the possibility of extracting biogenic silica from various European biomass materials was investigated. High-purity biogenic silica (>90 wt % SiO₂) was obtained from energy crops (miscanthus), agro wastes (wheat straw), and other crop residues (cereal remnant pellets). Three different morphological forms of biogenic silica materials (ash) were obtained by a thermo-chemical tr ...
DOI:
10.1021/acssuschemeng.5b00275

7. Performance of Coal Fly Ash Stabilized, CaO-based Sorbents under Different Carbonation–Calcination Conditions

Author:
Yan, Feng; Jiang, Jianguo; Li, Kaimin; Tian, Sicong; Zhao, Ming; Chen, Xuejing
Source:
ACS sustainable chemistry 2015 v.3 no.9 pp. 2092-2099
ISSN:
2168-0485
Subject:
calcium; calcium oxalate; calcium oxide; carbon dioxide; coal; coal fly ash; mixing; solid wastes; sorbents; temperature
Abstract:
... The rapid deactivation of CaO sorbents due to sintering currently presents a major barrier to calcium looping for CO₂ capture. In this work, we report an easy method for synthesizing highly stable CaO-based sorbents through mechanical mixing of a calcium precursor and coal fly ash (solid waste from coal-fired plants). To investigate the stable performance of as-synthesized sorbents, the effects of ...
DOI:
10.1021/acssuschemeng.5b00355

8. Trash to Treasure: Transforming Waste Polystyrene Cups into Negative Electrode Materials for Sodium Ion Batteries

Author:
Fonseca, Weliton Silva; Meng, Xinghua; Deng, Da
Source:
ACS sustainable chemistry 2015 v.3 no.9 pp. 2153-2159
ISSN:
2168-0485
Subject:
wastes; gases; landfills; carbonization; ions; packaging materials; polystyrenes; electrodes; toxic substances; electrochemistry; carbon; sodium; toxicity; temperature; disasters; batteries
Abstract:
... Modern society generates a huge amount of plastic wastes that are posing potential disasters to our environment and society. For example, waste polystyrene (PS), such as used PS cups and packing materials, is mainly disposed into landfills. It is very challenging to recycle PS economically. PS cannot be carbonized under conventional conditions, because PS is completely decomposed into toxic gases ...
DOI:
10.1021/acssuschemeng.5b00403