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Industrial Possibilities of Idjen Crater Lake Water

Tjiook Tiauw Kien


Abstract. Idjen Crater Lake Water containing 600.000 tons of sulfur 1) 4) (compare total Indonesian sulfur reserves of 1 million tons 2) has been investigated as to the possibility of its use as an industrial raw material. Although sulfate can most conveniently be recovered from the dilute acid solution as gypsum, it is advantageously suggested to convert the latter into ammonium sulfate, thus potentially increasing the possibility of fertilizer production in Indonesia. A flowsheet has been proposed. Although processing the Lake Water seems to be feasible front a technological point of view, a possible danger of Idjen Volcano eruption, however small, should not be overlooked.

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