SELENIUM ABSORBER, MANUFACTURING METHOD THEREFOR, PROCESSING METHOD OF SELENIUM USING THE ABSORBER

• Main Authors: ITAYA YUKI, KUNINISHI TAKESHI, HAYASHI SHINTARO, SHIMOKAWA YOSHINOBU
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2017
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; DISPOSAL OF SOLID WASTE; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; RECLAMATION OF CONTAMINATED SOIL; RECLAMATION OF CONTAMINED SOIL SOIL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

PROBLEM TO BE SOLVED: To provide a selenium absorber having excellent selenium processing performance capable of absorbing hexavalent selenium as hexavalent without reducing the same compared to conventional selenium absorbers and a manufacturing method therefor, and a selenium absorbing method using the selenium absorber.SOLUTION: The selenium absorber contains iron (Fe) and magnesium (Mg) derived from iron (Fe) and magnesium (Mg)-containing solution with pH of 9.5 to 10.5 as essential constituent elements and having molar ratio of Mg/Fe of over 0.2 and 59 or less, preferably 0.5 to 59.SELECTED DRAWING: Figure 2 【課題】本発明は、従来のセレン吸着剤と比べて、６価のセレンを還元することなく６価のままで吸着できる優れたセレン処理能力を有する、セレン吸着剤及びその製造方法、並びに前記セレン吸着剤を用いたセレン吸着方法を提供することである。【解決手段】本発明のセレン吸着剤は、ｐＨ９．５〜１０．５の鉄（Ｆｅ）及びマグネシウム（Ｍｇ）含有溶液由来の鉄（Ｆｅ）、及びマグネシウム（Ｍｇ）を必須構成元素として含み、Ｍｇ／Ｆｅのモル比が０．２を超えて５９以下、好ましくは０．５〜５９である。【選択図】図２