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Recovered ammonium sulfate
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Ammonium sulfate is produced by recovering either ammonia or sulfuric acid after it has been used in various industries. It is generally obtained from waste liquid produced during the production of caprolactam, the raw material for nylon, or waste gas produced during the production of Bemberg rayon. The majority of ammonium sulfate produced in Japan is recovered ammonium sulfate. It is mainly used as nitrogen fertilizer. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
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アンモニアと硫酸のどちらかを各種工業で使用したのち，これを回収して製造する硫安。一般に，ナイロンの原料であるカプロラクタムを製造する際の廃液やベンベルグ人絹を製造する際の廃ガスから得られるものが多い。日本において生産される硫安の大半は回収硫安である。おもに窒素肥料として利用される。
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