活性炭の製造に関する研究(第1報)塩化マグネシウムに依る附活

概要

論文の詳細を見る
Active charcoal, before the war, was in great demand in sugar manufacture, but now excellent charcoal is required in the extraction of Penicillin. In manufacturing active charcoal from sawdust, activation by inactive gas or chemicals has been made use of, but in this experiment activation by magnesium chloride was used. Up to the present activation of charcoal by salts of alkali earth metals, zinc, magnesium, etc., have been well known, and so in this experiment magnesium chloride, byproduct of salt manufacture at the seahore, was used to make active charcoal from pine or cedar wood, etc. Sawdust, after being added to various concentration of magnesium chloride, was digested, dried, carbonized and activated in the electric furnace, washed with dilute hydrochloric acid and then with water, and dried. Tests were made for discoloration of methylene blue, caramel or iodine solution and for velocities of discoloration of methylene blue. From this experiment it is found that pines and cedars are suitable materials and 17 per cent solution of magnesium chloride is better than another solution. But generally the active charcoal thus obtained is inferior in velocity to one on market. Observation by microscope at washing is also reported here.
山形大学の論文
1950-09-30