Development of the Technique for Recovery and Purification of Lead and Arsenic in Water on Biomass Wastes.

生物质废弃物水中铅、砷回收净化技术开发。

• 批准号: 11680577
• 负责人: BABA Yoshinari
• 金额: $ 2.43万
• 依托单位: Miyazaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11680577/
• 关键词: Algnic acid; Pectinic acid; Chitosan; Heavy metal; Lead; Arsenic; Dry cross-linked method; Shirasu porous glass

Alginic acid and pectinic acid are used as adsorbents for recovery of lead and arsenic. These were crosslinked not to dissolve in an alkaline solution. The crosslinking was carried out by two kinds of methods : one is the crosslinking by chloromethyl oxirane in an alkaline solution, and the other is the crosslinking by formaldehyde in hydrochloric acid. These resins were found to have a high selectivity for lead and ferric iron. Especially, ferric iron was adsorbed even at below pH 1, indicating that the crosslinked Fe/alginic acid and Fe/pectinic acid can be used as the adsorbents for arsenic. On the other hand, we synthesized a chitosan derivative introducing thiocarbamoyl groups to recover arsenic(III) being classified as "soft acid". Scince the thiocarbamoyl group is classified as "soft base", this chitosan derivative was expected as a selective adsorbent for arsenic(III). However, this chitosan derivative was not able to adsorbed arsenic(III) though this can selectively adsorbed mercury(II) over base metals such as ferric iron, nickel, cobalt, and zinc. Therefore, we determined to use the Fe/alginic acid and Fe/pectinic acid as adsorbents for arsenic. These metal-complex resins found to be a selective and effective adsorbent for arsenic(III, IV).

采用海藻酸和果胶酸作为吸附剂回收铅和砷。这些被交联以不溶解在碱性溶液中。交联方法有两种：一种是氯甲基环氧乙烷在碱性溶液中交联，另一种是甲醛在盐酸中交联。发现这些树脂对铅和三价铁具有高选择性。特别是，三价铁的吸附，即使在pH值低于1，表明交联的铁/海藻酸和铁/果胶酸可以用作吸附剂砷。另一方面，我们合成了一种引入硫代氨基甲酰基的壳聚糖衍生物，用于回收被归类为“软酸”的砷（III）。由于硫代氨基甲酰基属于“软碱”，该壳聚糖衍生物有望作为砷（III）的选择性吸附剂。然而，这种壳聚糖衍生物不能吸附砷（III），虽然这可以选择性地吸附汞（II）超过贱金属，如三价铁，镍，钴和锌。因此，我们决定使用Fe/海藻酸和Fe/果胶酸作为砷的吸附剂。这些金属络合物树脂被发现是一种选择性和有效的吸附剂砷（III，IV）。

项目成果

Yuki Kawasaki and Yoshinari Baba: "Preparation of Crosslinked Alginic Acid Resins and Their Adsorption Properties of Ammonia and Dimethylamine"Proc.of The 32nd SPG Forum, International. Science and Technology of Membrane and Microsphere. 107-110 (1999)

Yuki Kawasaki 和 Yoshinari Baba：“交联海藻酸树脂的制备及其对氨和二甲胺的吸附性能”第 32 届 SPG 国际论坛的会议记录。

Yoshinari Baba,Hiroshi Noma: "Selective Adsorption of Copper (II) and Palladium (II) on a Chitosan Derivative Recognizing Planar Metal Ions."26^<th> International Conference on Solution Chemistry (26thICSC). 248 (1999)

Yoshinari Baba、Hiroshi Noma：“铜 (II) 和钯 (II) 在壳聚糖衍生物识别平面金属离子上的选择性吸附。”第 26 届国际溶液化学会议 (26thICSC)。

Eiich Yanagita and Yoshinari Baba: "Preparation of Chelate Resins Using Alginic Acid and Their Adsorption Selectivities for Metals"Proc.of The 32nd SPG Forum, International. Science and Technology of Membrane and Microsphere. 111-114 (1999)

Eiich Yanagita 和 Yoshinari Baba：“使用藻酸制备螯合树脂及其对金属的吸附选择性”第 32 届 SPG 国际论坛的会议记录。

Yoshinari Baba,Rie,nakayama,and Hirishi Noma: "Preparation of Chitosan Derivatives Containing Alkylthiocarbamoyl Groups and Their Selective Adsorption of Metal Ions"8-th International Chitin and Chitosan Conference (8^<th> ICCC) and 4-th Asia Pacific Chit

Yoshinari Baba，Rie，nakayama，Hirishi Noma：“含烷基硫代氨基甲酰基的壳聚糖衍生物的制备及其对金属离子的选择性吸附”第八届国际甲壳素和壳聚糖会议（第8届ICCC）和第四届亚太Chit

Yoshinari Baba, Koji Ohkuma: "Synthesits of chitosan derivatives and their adsorption characteristics for nitrate anion"Nippon Kagakukaishi. No.7. 467-472 (1999)

马场吉成、大隈浩二：“壳聚糖衍生物的合成及其对硝酸根阴离子的吸附特性”Nippon Kagakukaishi。