VLE of Carbon Dioxide/Ethanol/Water:  Applications to Volume Expansion Evaluation and Water Removal Efficiency

2005 ◽  
Vol 44 (17) ◽  
pp. 6751-6759 ◽  
Author(s):  
Jun Li ◽  
Miguel Rodrigues ◽  
Henrique A. Matos ◽  
Edmundo Gomes de Azevedo
Keyword(s):  
Carbon Dioxide ◽  
Removal Efficiency ◽  
Volume Expansion ◽  
Water Removal

Extracellular Volume Expansion Caused by Protein Malnutrition in Peritoneal Dialysis Patients with Appropriate Salt and Water Removal

2008 ◽  
Vol 28 (4) ◽  
pp. 407-412 ◽  
Author(s):  
M.-José Fernández-Reyes ◽  
M.-Auxiliadora Bajo ◽  
Gloria del Peso ◽  
Dabaiba Regidor ◽  
Covadonga Hevia ◽  
...  
Keyword(s):  
Peritoneal Dialysis ◽  
Volume Expansion ◽  
Extracellular Volume ◽  
Protein Malnutrition ◽  
Water Removal ◽  
Dialysis Patients ◽  
Extracellular Volume Expansion

Treatment of air polluted with methanol vapours in biofilters with and without percolationThis article is one of a selection of papers published in this Special Issue on Biological Air Treatment.

2009 ◽  
Vol 36 (12) ◽  
pp. 1911-1918 ◽  
Author(s):  
Antonio Avalos Ramirez ◽  
Sandrine Bénard ◽  
Anne Giroir-Fendler ◽  
J. Peter Jones ◽  
Michèle Heitz
Keyword(s):  
Carbon Dioxide ◽  
Production Rate ◽  
Removal Efficiency ◽  
Nitrogen Concentration ◽  
Carbon Dioxide Production ◽  
Elimination Capacity ◽  
Biotrickling Filter ◽  
Filter Performance ◽  
Carbon Dioxide Production Rate ◽  
Maximum Elimination Capacity

Air polluted with methanol vapours was treated in a biofilter and a biotrickling filter, both packed with inert materials. The effects of the nitrogen concentration present in the nutrient solution, the empty bed residence time, and the methanol inlet load, on the biofilter and biotrickling filter performance were all examined and compared. The elimination capacity, the biomass and the carbon dioxide production rates all increased with the increase of the parameters tested. The maximum elimination capacity for the biotrickling filter was 240 g·m–3·h–1 with corresponding removal efficiency of 75% and carbon dioxide production rate of 10 g·m–3·h–1, whereas the maximum elimination capacity for the biofilter was 80 g·m–3·h–1 with corresponding removal efficiency of 35% and carbon dioxide production rate of 70 g·m–3·h–1. The biomass production rate was similar for both the biofilter and the biotrickling filter. The carbon dioxide production rate was higher by a factor of 2 to 9 for the biofilter compared to the biotrickling filter.

Using a Fused Silica Capillary Cell and In Situ Raman Spectroscopy To Develop a Setup for Measurement of the Volume Expansion of Carbon Dioxide + n-Hexane

2017 ◽  
Vol 31 (6) ◽  
pp. 6314-6319 ◽  
Author(s):  
Junliang Wang ◽  
Shuyan Zhou ◽  
Ke Bei ◽  
Dan Zhang ◽  
I-Ming Chou ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Raman Spectroscopy ◽  
Volume Expansion ◽  
Fused Silica ◽  
In Situ Raman Spectroscopy ◽  
In Situ Raman ◽  
Fused Silica Capillary ◽  
Silica Capillary

Biofiltration de l'air pollué par le xylène : observations expérimentales

2002 ◽  
Vol 29 (4) ◽  
pp. 543-553 ◽  
Author(s):  
Hasnaa Jorio ◽  
Guy Viel ◽  
Michèle Heitz
Keyword(s):  
Carbon Dioxide ◽  
Pressure Drop ◽  
Key Words ◽  
Removal Efficiency ◽  
Residence Time ◽  
Elimination Capacity ◽  
Nutritive Solution ◽  
Filter Bed ◽  
Empty Bed Residence Time

A new filtering material has been tested for its biofiltration performance for the treatment of air contaminated with the three isomers of xylene. The biofilter, operated at an empty bed residence time of 68 s and for xylene concentrations up to 6.7 g·m–3, allowed a xylene load and reduction of more than 92% for concentrations up to 2 g·m–3, and more than 65% for concentrations less than 6.7 g·m–3. The maximum xylene elimination capacity is of 236 g·m–3·h–1. In general, the removal efficiency of meta-xylene is the highest whereas the removal efficiency of ortho-xylene is the lowest. At high xylene concentration, the increase of biodegradation intensity leads to the accumulation of a voluminous biofilm around the filtering particles, causing the clogging of the filter bed, the progressive retention of the nutritive solution in the superior parts of the bed, and the drying of the inferior parts of the bed. These observations have showed that a biofilter operating at high elimination capacities requires a meticulous control of the humidity of the filtering bed and a regular draining of the biomass excess. Key words: biofiltration, xylene, ortho, meta, and para isomers, carbon dioxide, biofilm, pressure drop, biomass excess.[Journal translation]

scholarly journals Dehydrating agent effect on the synthesis of dimethyl carbonate (DMC) directly from methanol and carbon dioxide

RSC Advances ◽  
2020 ◽  
Vol 10 (57) ◽  
pp. 34895-34902 ◽  
Author(s):  
Douglas José Faria ◽  
Leonardo Moreira dos Santos ◽  
Franciele Longaray Bernard ◽  
Ingrid Selbacch Pinto ◽  
Maria Angélica Carmona da Motta Resende ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Dimethyl Carbonate ◽  
Reaction Medium ◽  
Water Removal

DMC was obtained from methanol and carbon dioxide and a new reactor was proposed for water removal from reaction medium.

Preparation of Alumina from NaOH-NaAlO2-Na2CrO4-H2O Solutions by Carbonization Process

2013 ◽  
Vol 455 ◽  
pp. 48-53
Author(s):  
Guang Ye Wei ◽  
Jing Kui Qu ◽  
Pei Yu Zhang ◽  
Qiang Guo ◽  
Yu Dong Zheng ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Particle Size ◽  
Removal Efficiency ◽  
Volume Fraction ◽  
Seed Particle ◽  
Carbonization Process ◽  
Stability Of Solution ◽  
Alkali Solutions ◽  
The Stability ◽  
Small Content

Alumina was prepared from NaOH-NaAlO2-Na2CrO4-H2O solutions (chromate alkali solutions) by carbonization process. The effect of seed ratio, carbon dioxide (CO2) volume fraction, reaction temperature, and initial sodium hydroxide (NaOH) concentration on the removal efficiency of Al was investigated in detail. High removal efficiency of Al was obtained following the increase of CO2volume fraction and temperature. While, initial NaOH concentration increases the stability of solution and reduces the removal efficiency of Al. Bayerite (Al (OH)3) with small content of Cr (VI) and Na2O was obtained from alkali metal chromate solutions at 50 °C with no seed. Particle size of bayerite (d50) was about 24 μm. Al2O3was obtained after calcination at 1050 °C for 1.5 h.

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