Recovery of o-toluidine and p-toluidine from wastewater by silicon rubber membrane extraction

2020 ◽  
Vol 19 ◽  
pp. 100873
Author(s):  
Chao Zhu ◽  
Zarak Mahmood ◽  
Abdul Saboor Arshad ◽  
Jia Liu ◽  
Hongrui Ma
Keyword(s):  
Membrane Extraction ◽  
Rubber Membrane ◽  
Silicon Rubber

Preparation of vanillin by bioconversion in a silicon rubber membrane bioreactor

2008 ◽  
Vol 41 (2) ◽  
pp. 193-197 ◽  
Author(s):  
Yun-Tao Wu ◽  
Ming Feng ◽  
Wen-Wu Ding ◽  
Xiao-Yu Tang ◽  
Yue-Hua Zhong ◽  
...  
Keyword(s):  
Membrane Bioreactor ◽  
Rubber Membrane ◽  
Silicon Rubber

Study of Mass Transfer Characteristics of Membrane Extraction of p-Hydroxy Benzoic Acid Aqueous Solution Using Non-Porous Silicone Rubber Membrane

2013 ◽  
Vol 798-799 ◽  
pp. 227-230
Author(s):  
Wei Li Zhang ◽  
Sen Qiao ◽  
Ai Li Zhang ◽  
Ji Ti Zhou
Keyword(s):  
Aqueous Solution ◽  
Mass Transfer ◽  
Benzoic Acid ◽  
Silicone Rubber ◽  
Mass Transfer Process ◽  
Membrane Extraction ◽  
Rubber Membrane ◽  
System Temperature ◽  
In Series ◽  
Acid Aqueous Solution

A kind of modules with single tubular silicone rubber membranes was combined into membrane osmosis extraction for the treatment of p-hydroxy benzoic acid aqueous solution. Mass transfer process of p-hydroxy benzoic acid through membranes was studied. Based on the resistance-in-series model, the overall mass transfer coefficient (Kov) across membrane was calculated. The effects of feed liquid flow status, system temperature and additional salt on Kov were discussed, from which the mathematical model between flow status and system temperature was obtained.

Fracture-Tolerant and Shear-Resistant Interlayers for Mitigation of Reflective Cracking

2019 ◽  
Vol 2673 (10) ◽  
pp. 35-46
Author(s):  
Cristian Cocconcelli ◽  
Bongsuk Park ◽  
Jian Zou ◽  
George Lopp ◽  
Reynaldo Roque
Keyword(s):  
Asphalt Pavement ◽  
Aggregate Size ◽  
Cost Effective ◽  
Design Guidelines ◽  
Reflective Cracking ◽  
Rubber Membrane ◽  
Near Surface ◽  
Field Evidence ◽  
Cracking Performance ◽  
Interface Cracking

Reflective cracking is frequently reported as the most common distress affecting resurfaced pavements. An asphalt rubber membrane interlayer (ARMI) approach has been traditionally used in Florida to mitigate reflective cracking. However, recent field evidence has raised doubts about the effectiveness of the ARMI when placed near the surface, indicating questionable benefits to reflective cracking and increased instability rutting potential. The main purpose of this research was to develop guidelines for an effective alternative to the ARMI for mitigation of near-surface reflective cracking in overlays on asphalt pavement. Fourteen interlayer mixtures, covering three aggregate types widely used in Florida, and two nominal maximum aggregate sizes (NMAS) were designed according to key characteristics identified for mitigation of reflective cracking, that is, sufficient gradation coarseness and high asphalt content. The dominant aggregate size range—interstitial component (DASR-IC) model was used for the design of all mixture gradations. A composite specimen interface cracking (CSIC) test was employed to evaluate reflective cracking performance of interlayer systems. In addition, asphalt pavement analyzer (APA) tests were performed to determine whether the interlayer mixtures had sufficient rutting resistance. The results indicated that interlayer mixtures designed with lower compaction effort, reduced design air voids, and coarser gradation led to more cost-effective fracture-tolerant and shear-resistant (FTSR) interlayers. Therefore, preliminary design guidelines including minimum effective film thickness and maximum DASR porosity requirements were proposed for 9.5-mm NMAS (35 µm and 50%) and 4.75-mm NMAS FTSR mixtures (20 µm and 60%) to mitigate near-surface reflective cracking.

scholarly journals Scalable fabrication of carbon materials based silicon rubber for highly stretchable e-textile sensor

2020 ◽  
Vol 9 (1) ◽  
pp. 1183-1191
Author(s):  
Xinlin Li ◽  
Rixuan Wang ◽  
Leilei Wang ◽  
Aizhen Li ◽  
Xiaowu Tang ◽  
...  
Keyword(s):  
Carbon Nanomaterials ◽  
Electrical Performance ◽  
Gauge Factor ◽  
Multiwalled Carbon ◽  
Silicon Rubber ◽  
Smart Clothing ◽  
Mechanical And Electrical Properties ◽  
Highly Stretchable ◽  
Textile Sensor ◽  
High Level

AbstractDevelopment of stretchable wearable devices requires essential materials with high level of mechanical and electrical properties as well as scalability. Recently, silicone rubber-based elastic polymers with incorporated conductive fillers (metal particles, carbon nanomaterials, etc.) have been shown to the most promising materials for enabling both high electrical performance and stretchability, but the technology to make materials in scalable fabrication is still lacking. Here, we propose a facile method for fabricating a wearable device by directly coating essential electrical material on fabrics. The optimized material is implemented by the noncovalent association of multiwalled carbon nanotube (MWCNT), carbon black (CB), and silicon rubber (SR). The e-textile sensor has the highest gauge factor (GF) up to 34.38 when subjected to 40% strain for 5,000 cycles, without any degradation. In particular, the fabric sensor is fully operational even after being immersed in water for 10 days or stirred at room temperature for 8 hours. Our study provides a general platform for incorporating other stretchable elastic materials, enabling the future development of the smart clothing manufacturing.

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