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Preparation of polyaluminium silicate sulfate from bentonite

Hongchao Ma

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Abstract

Polyaluminium silicate sulfate(PASS) has been synthesized using bentonite as the raw material.The composition and process parameters for the synthesis of PASS have been optimized.It is found that Si/Al molar ratio of 1,polymerization pH of 4,polymerization temperature of 60 ℃,reaction time of 1 h and aging time of 24 h give better coagulating efficiency for simulated wastewater treatment.PASS synthesized under optimum condition shows the largest percentages of decoloration and deturbidity were as high as 83.3% and 57.1% respectively.

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Polyaluminium silicate sulfate(PASS) has been synthesized using bentonite as the raw material.The composition and process parameters for the synthesis of PASS have been optimized.It is found that Si/Al molar ratio of 1,polymerization pH of 4,polymerization temperature of 60 ℃,reaction time of 1 h and aging time of 24 h give better coagulating efficiency for simulated wastewater treatment.PASS synthesized under optimum condition shows the largest percentages of decoloration and deturbidity were as high as 83.3% and 57.1% respectively.

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Available abstract

Polyaluminium silicate sulfate(PASS) has been synthesized using bentonite as the raw material.The composition and process parameters for the synthesis of PASS have been optimized.It is found that Si/Al molar ratio of 1,polymerization pH of 4,polymerization temperature of 60 ℃,reaction time of 1 h and aging time of 24 h give better coagulating efficiency for simulated wastewater treatment.PASS synthesized under optimum condition shows the largest percentages of decoloration and deturbidity were as high as 83.3% and 57.1% respectively.

Key concepts: Bentonite, Silicate, Molar ratio, Sulfate, Raw material, Polymerization, Composition (language), Nuclear chemistry

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