Chemical modification of poplar wood featuring compressible rebound 3D structure as water treatment absorbents

2022 ◽  
Vol 331 ◽  
pp. 129952
Author(s):  
Yan Wu ◽  
Yijing Cai ◽  
Feng Yang ◽  
Jian Gan ◽  
Jilei Zhang
BioResources ◽  
2015 ◽  
Vol 10 (3) ◽  
Author(s):  
Xiaoshuai Han ◽  
Xinwei Miao ◽  
Xue Zheng ◽  
Liyan Xing ◽  
Junwen Pu

2008 ◽  
Vol 2008 (10) ◽  
pp. 1551-1554 ◽  
Author(s):  
José Sánchez Costa ◽  
Patrick Gamez ◽  
Cory A. Black ◽  
Olivier Roubeau ◽  
Simon J. Teat ◽  
...  

2019 ◽  
Vol 43 (23) ◽  
pp. 9280-9288 ◽  
Author(s):  
Lei Pu ◽  
Xing Wang ◽  
Kaiping Shang ◽  
Qiping Cao ◽  
Si Gao ◽  
...  

A kind of non-precious glass bead catalyst was prepared by a subcritical water treatment method for the depolymerisation of poplar lignin.


RSC Advances ◽  
2015 ◽  
Vol 5 (83) ◽  
pp. 67459-67474 ◽  
Author(s):  
Qing Chen ◽  
Haojie Yu ◽  
Li Wang ◽  
Zain ul Abdin ◽  
Yongsheng Chen ◽  
...  

Starch has received much attention as a promising natural material both in biomedical fields and waste water treatment due to its unique biological and adsorptive properties.


2011 ◽  
Vol 194-196 ◽  
pp. 1815-1818
Author(s):  
Guo Feng Wu ◽  
Qian Lang ◽  
Bin Wang ◽  
Yi Fei Jiang ◽  
Jun Wen Pu

In this research, the chemical and multilayer hot-press drying was used to modify poplar wood. The timbers were compressed and dried in the multilayer hot-press drying kiln. The combination of chemical modification and hot-press drying can improve the mechanical properties. The influence of chemical and hot-press drying on the compressive strength parallel to grain, the bending strength, the density, the water absorbent and the crystallinity of poplar wood have been investigated in this study. The chemical treated conditions close to real technological regimes selected. The samples were impregnated with three conditions. The samples were dried in a hot-press drying kiln for 130hrs. It was showed that the urea carbamate and hot-press drying treatment increase the properties. The density and mechanical properties increased with increasing urea carbamate, while the water absorption decreased. The crystallinity is 37.03%, 37.11%, 37.78%, separately, compared with the natural wood of 35.09%. The TAG showed the thermal stability increased.


Molecules ◽  
2021 ◽  
Vol 26 (19) ◽  
pp. 6067
Author(s):  
Mahmud Diab ◽  
Karam Shreteh ◽  
Michael Volokh ◽  
Taleb Mokari

The necessity of providing clean water sources increases the demand to develop catalytic systems for water treatment. Good pollutants adsorbers are a key ingredient, and CuO is one of the candidate materials for this task. Among the different approaches for CuO synthesis, precipitation out of aqueous solutions is a leading candidate due to the facile synthesis, high yield, sustainability, and the reported shape control by adjustment of the counter anions. We harness this effect to investigate the formation of copper oxide-based 3D structures. Specifically, the counter anion (chloride, nitrate, and acetate) affects the formation of copper-based hydroxides and the final structure following their conversion into copper oxide nanostructures over porous templates. The formation of a 3D structure is obtained when copper chloride or nitrate reacts with a Sorites scaffold (marine-based calcium carbonate template) without external hydroxide addition. The transformation into copper oxides occurs after calcination or reduction of the obtained Cu2(OH)3X (X = Cl– or NO3–) while preserving the porous morphology. Finally, the formed Sorites@CuO structure is examined for water treatment to remove heavy metal cations and degrade organic contaminant molecules.


2008 ◽  
Vol 2008 (10) ◽  
pp. 1539-1539 ◽  
Author(s):  
José Sánchez Costa ◽  
Patrick Gamez ◽  
Cory A. Black ◽  
Olivier Roubeau ◽  
Simon J. Teat ◽  
...  

Author(s):  
A. Engel ◽  
D.L. Dorset ◽  
A. Massalski ◽  
J.P. Rosenbusch

Porins represent a group of channel forming proteins that facilitate diffusion of small solutes across the outer membrane of Gram-negative bacteria, while excluding large molecules (>650 Da). Planar membranes reconstituted from purified matrix porin (OmpF protein) trimers and phospholipids have allowed quantitative functional studies of the voltage-dependent channels and revealed concerted activation of triplets. Under the same reconstitution conditions but using high protein concentrations porin aggregated to 2D lattices suitable for electron microscopy and image processing. Depending on the lipid-to- protein ratio three different crystal packing arrangements were observed: a large (a = 93 Å) and a small (a = 79 Å) hexagonal and a rectangular (a = 79 Å b = 139 Å) form with p3 symmetry for the hexagonal arrays. In all crystal forms distinct stain filled triplet indentations could be seen and were found to be morphologically identical within a resolution of (22 Å). It is tempting to correlate stain triplets with triple channels, but the proof of this hypothesis requires an analysis of the structure in 3 dimensions.


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