公开(公告)号：US3900422A

公开(公告)日：1975-08-19

申请号：US40064573

申请日：1973-09-25

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TERAJIMA KAZUKI ,  TOMITA SHIGERU ,  MATSUDA YOSHINDO ,  ABE KEIJI

IPC: B01J20/22 ,  C02F1/28 ,  C02F9/00 ,  C02B1/52

CPC classification number: C02F1/286 ,  B01J20/22 ,  C02F2101/20 ,  C22B3/24 ,  Y02P10/234

Abstract: Heavy metal adsorbents comprising granules of a mixture of nitrohumic acid and at least one binder selected from the group consisting of a carboxyl group-containing polymeric compound and a water-insoluble salt thereof. These heavy metal adsorbents are produced advantageously by either a process wherein a mixture of nitrohumic acid and a carboxyl group-containing polymeric compound is kneaded with an aqueous solution of alkali and the kneaded mixture is first subjected to an acid treatment and then shaped into granules, or a process wherein nitrohumic acid and a carboxyl group-containing polymeric compound are dissolved in an aqueous solution of alkali, the solution is acidified to form a precipitate and then the precipitate is separated and shaped into granules. The granular products thus obtained can be further improved in mechanical strength by means of a heat treatment.

公开(公告)号：DE2348436A1

公开(公告)日：1974-05-02

申请号：DE2348436

申请日：1973-09-26

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TERAJIMA KAZUKI ,  TOMITA SHIGERU ,  MATSUDA YOSHINDO ,  ABE KEIJI

IPC: B01J20/22 ,  C02F1/28 ,  C02F9/00 ,  C08H13/04 ,  C02C5/02

公开(公告)号：DE2434632A1

公开(公告)日：1975-02-13

申请号：DE2434632

申请日：1974-07-18

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TERAJIMA KAZUKU ,  TOMITA SHIGERU ,  MATSUDA YOSHINDO ,  ABE KEIJI

IPC: C09K3/32 ,  B01J20/24 ,  C02F1/28 ,  C02F3/34

Abstract: New adsorbents comprising granules of a mixture of nitrohumic acid and one or more proteins. These adsorbents are utilizable effectively for adsorbing heavy metals and oils contained in water. They are produced advantageously by either a process wherein a mixture of nitrohumic acid and a protein is kneaded with an aqueous solution of alkali and the kneaded mixture is first subjected to an acid treatment and then shaped into granules, or a process wherein nitrohumic acid and a protein are dissolved in an aqueous solution of alkali, the solution is acidified to form a precipitate and then the precipitate is separated and shaped into granules. The granular products thus obtained can be further improved in mechanical strength by means of a heat treatment.

公开(公告)号：CA1063583A

公开(公告)日：1979-10-02

申请号：CA264307

申请日：1976-10-27

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TOMITA SHIGERU ,  MATSUDA YOSHINDO ,  TERAJIMA KAZUKI ,  ABE KEIJI

IPC: C09K3/32 ,  C02F1/28 ,  C02F1/40 ,  D06M13/02 ,  D06M15/693 ,  B01J1/22 ,  B05D5/04 ,  B05D1/38

Abstract: Title of the Invention: OIL ADSORBENT AND A METHOD OF PRODUCING SAME An oil adsorbent comprising natural fibers the surface of which is coated with a water-repellent paraffin layer which is in turn coated with an elastic rubber layer. The adsorbent is manufactured by treating the surface of the natural fibers with a paraffin emulsion, drying the fibers to form a water repellent paraffin layer thereon, treating the product with a latex, and then curing the latex to form an elastic rubber layer on the paraffin layer. The oil adsorbent has such advantages that it floats on the surface of water stably for a long period of time retaining its original form, that the contained paraffin is not back extracted by adsorbed oil and that it does not cause any trouble on burning.

公开(公告)号：CA1036575A

公开(公告)日：1978-08-15

申请号：CA205181

申请日：1974-07-19

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TERAJIMA KAZUKI ,  TOMITA SHIGERU ,  MATSUDA YOSHINDO ,  ABE KEIJI

IPC: C09K3/32 ,  B01J20/24 ,  C02F1/28 ,  C02F3/34 ,  B01J1/22 ,  B01D15/00 ,  C02B1/14

Abstract: New adsorbents comprise granules of a mixture of nitrohumic acid and one or more proteins. These adsorbents are utilizable effectively for adsorbing heavy metals and oils contained in water. They are produced by either a process wherein a mixture of nitrohumic acid and a protein is kneaded with an aqueous solution of alkali and the kneaded mixture is first subjected to an acid treatment and then shaped into granules, or a process wherein nitrohumic acid and a protein are dissolved in an aqueous solution of alkali, the solution is acidified to form a precipitate and then the precipitate is separated and shaped into granules. The granular products thus obtained can be further improved in mechanical strength by means of a heat treatment.