phenol gas is introduced 4 to the lower part of the cylinder 1, and in the layer 5, phenol is caused to react with NaOH and is absorbed off into the absorbing liquid. In this case, the NaHCO3 concn. owing to the CO2 gas in the exhaust gas formed in the absorbing liquid in the ...
Phenol is weakly acidic and reacts with base to form salt. It appears blue when being dissolved in ferric chloride solution. View all 2.13 Physical Properties Phenol is a colorless or white crystalline solid that is slightly soluble in water. Phenol is thesimplest of the large group of ...
Next, CO2 is blown into the resultant anhydrous salt and reacted in a pressure from reduced pressure to near atmospheric pressure with keeping at 130-150 deg.C to afford a 3,5-dialkylsalicyclic acid. Said compound is useful as color developer for pressure-sensitive recording paper.岩井 正幸...
Next, CO2 is blown into the resultant anhydrous salt and reacted in a pressure from reduced pressure to near atmospheric pressure with keeping at 130-150 deg.C to afford a 3,5-dialkylsalicyclic acid. Said compound is useful as color developer for pressure-sensitive recording paper.米沢 大学...
(SC) of the adhesive identifies the number of particles in the adhesive. The more adhesive particles that react with wood in the gluing process, the stronger the bond strength. The average SC of the control PF adhesive was 47.39%, whereas the PF adhesive with NaOH and CaCO3catalyst had a...
react, producing even more toxic substances and therefore threatening the aquatic life by entering the food chain. The treatment processes for phenolic wastewater have been classified into two principal categories [3]: (i) recuperative process such as adsorption into porous solids, osmosis and solvent...
The COD value was determined by adding 2.5 mL of wastewater sample into the COD digestion cuvette. In the first step, the decomposition of excess H2O2was carried out by adjusting the solution pH with NaOH 20% to a value pH of 10.0, then refluxing at 100oC for 30 min on a COD digester...
In an SBR cycle, there are usually five phases, including fill, react, settle, decant, and idle (Figure 4). The duration of each phase is controlled by a programmable logic controller (PLC). In the fill phase, wastewater enters the tank, mixing with the bio6moaf 4s5s from the ...
The mole ratio of NaOH to synthetic phenol was always set as 0.25:1. The phenol and 70% NaOH solution (30 wt %) were mixed in a 250-mL three-neck round-bottom glass reactor equipped with a stirrer, thermometer, and reflux condenser. The reactant was heated to 70 ◦C in 30 min....