Removal system of arsenic from geothermal water by high gradient magnetic separation-HGMS reciprocal filter

Hidehiko Okada; Yasuo Kudo; Hiroshi Nakazawa; Akihiko Chiba; Kazunari Mitsuhashi; Takeshi Ohara; Hitoshi Wada

doi:10.1109/TASC.2004.830718

Removal system of arsenic from geothermal water by high gradient magnetic separation-HGMS reciprocal filter

Hidehiko Okada, Yasuo Kudo, Hiroshi Nakazawa, Akihiko Chiba, Kazunari Mitsuhashi, Takeshi Ohara, Hitoshi Wada

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

We have developed a High Gradient Magnetic Separation (HGMS) system to remove arsenic from geothermal water and to supply hot water for public use by using a superconducting magnet. We attained the reduction of arsenic concentration to 0.015 mg/L that is less than the standard for discharge of 0.1 mg/L and slightly larger than the environmental standard of 0.01 mg/L in Japan. The system consists of a pretreatment process that adds extra magnetization to arsenic by chemical reaction, and a reciprocal HGMS filter using a superconducting magnet that extracts magnetized arsenic from the geothermal water. We present the experimental results of the removal system.

Original language	English
Pages (from-to)	1576-1579
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	14
Issue number	2
DOIs	https://doi.org/10.1109/TASC.2004.830718
Publication status	Published - 2004 Jun
Externally published	Yes

Keywords

Arsenic
Geothermal water
High gradient magnetic separation
Superconducting magnet

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TASC.2004.830718

Cite this

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abstract = "We have developed a High Gradient Magnetic Separation (HGMS) system to remove arsenic from geothermal water and to supply hot water for public use by using a superconducting magnet. We attained the reduction of arsenic concentration to 0.015 mg/L that is less than the standard for discharge of 0.1 mg/L and slightly larger than the environmental standard of 0.01 mg/L in Japan. The system consists of a pretreatment process that adds extra magnetization to arsenic by chemical reaction, and a reciprocal HGMS filter using a superconducting magnet that extracts magnetized arsenic from the geothermal water. We present the experimental results of the removal system.",

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AU - Okada, Hidehiko

AU - Kudo, Yasuo

AU - Nakazawa, Hiroshi

AU - Chiba, Akihiko

AU - Mitsuhashi, Kazunari

AU - Ohara, Takeshi

AU - Wada, Hitoshi

PY - 2004/6

Y1 - 2004/6

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AB - We have developed a High Gradient Magnetic Separation (HGMS) system to remove arsenic from geothermal water and to supply hot water for public use by using a superconducting magnet. We attained the reduction of arsenic concentration to 0.015 mg/L that is less than the standard for discharge of 0.1 mg/L and slightly larger than the environmental standard of 0.01 mg/L in Japan. The system consists of a pretreatment process that adds extra magnetization to arsenic by chemical reaction, and a reciprocal HGMS filter using a superconducting magnet that extracts magnetized arsenic from the geothermal water. We present the experimental results of the removal system.

KW - Arsenic

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KW - High gradient magnetic separation

KW - Superconducting magnet

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Removal system of arsenic from geothermal water by high gradient magnetic separation-HGMS reciprocal filter

Abstract

Keywords

ASJC Scopus subject areas

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