发明授权
US3994830A Process for the production of adsorbents of nitrohumic acid series with
an improved alkali-resistance
失效
用于生产具有改善的耐碱性的硝基酸系列吸附剂的方法
- 专利标题： Process for the production of adsorbents of nitrohumic acid series with an improved alkali-resistance
- 专利标题（中）： 用于生产具有改善的耐碱性的硝基酸系列吸附剂的方法
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申请号： US552362申请日： 1975-02-24
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公开(公告)号： US3994830A公开(公告)日： 1976-11-30
- 发明人: Kazuki Terajima , Shigeru Tomita , Yoshindo Matsuda , Keiji Abe , Kozo Higuchi , Keigo Iwashita , Nobuyuki Nishiyama , Yasuo Kato
- 申请人： Kazuki Terajima , Shigeru Tomita , Yoshindo Matsuda , Keiji Abe , Kozo Higuchi , Keigo Iwashita , Nobuyuki Nishiyama , Yasuo Kato
- 申请人地址： JA Tokyo JA Toda
- 专利权人： Agency of Industrial Science & Technology,Hokutan Chemical Industry Co. Ltd.
- 当前专利权人： Agency of Industrial Science & Technology,Hokutan Chemical Industry Co. Ltd.
- 当前专利权人地址： JA Tokyo JA Toda
- 优先权： JA49-23140 19740227
- 主分类号： B01J20/22
- IPC分类号： B01J20/22 ; B01J20/24 ; B01J39/24 ; C02F1/28 ; B01D15/00 ; C02B1/14
摘要：
An adsorbent of nitrohumic acid series with an improved alkali-resistance is prepared by insolubilizing calcium nitrohumate, kneading the insolubilized product with a water-soluble polyacrylamide in the presence of water, shaping the mixture into a desired form and then subjecting it to a heat treatment followed by an acid treatment. The adsorbent thus obtained can effectively be used for removing heavy metals from an alkaline effluent without causing any deterioration of adsorptive quality and coloration of the effluent.
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