Precipitate Coflotation of Calcium Sulfite and Calcium Carbonate: Application to Solids Removal from SO2 Wet-Scrubbing Slurries

Robert B. Grieves; Paul M. Schwartz; Dibakar Bhattacharyya

doi:10.1080/00372367508058057

Precipitate Coflotation of Calcium Sulfite and Calcium Carbonate: Application to Solids Removal from SO2 Wet-Scrubbing Slurries

Robert B. Grieves, Paul M. Schwartz, Dibakar Bhattacharyya

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

Abstract

An experimental study was conducted of the precipitate flotation of calcium sulfite, calcium carbonate, and of mixtures of both particulate species from suspensions of the order 0.1 M, with application to particle separation from the purge stream from a SO2-limestone wet scrubber. The strongly acidic, anionic surfactant, sodium dodecylbenzenesulfonate (NaDBS) provided excellent flotation of both calcium sulfite and calcium carbonate at neutral pH. For concentrations of calcium sulfite plus calcium carbonate of 3.7, 7.8, and 12.0 x 10-2 M, 95% flotation of precipitated sulfite and 97% flotation of carbonate can be accomplished at molar surfactant to sulfite plus carbonate ratios of 0.0035, 0.0023, and 0.0015, respectively.

Original language	English
Pages (from-to)	777-786
Number of pages	10
Journal	Separation Science
Volume	10
Issue number	6
DOIs	https://doi.org/10.1080/00372367508058057
State	Published - Dec 1975

Bibliographical note

Funding Information:
The authors wish to acknowledge gratefully the traineeship support of P. M. Schwartz by the U.S. Environmental Protection Agency through Training Grant T 900440.

ASJC Scopus subject areas

General Chemical Engineering
Process Chemistry and Technology
General Chemistry
Filtration and Separation
General Engineering

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10.1080/00372367508058057

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title = "Precipitate Coflotation of Calcium Sulfite and Calcium Carbonate: Application to Solids Removal from SO2 Wet-Scrubbing Slurries",

abstract = "An experimental study was conducted of the precipitate flotation of calcium sulfite, calcium carbonate, and of mixtures of both particulate species from suspensions of the order 0.1 M, with application to particle separation from the purge stream from a SO2-limestone wet scrubber. The strongly acidic, anionic surfactant, sodium dodecylbenzenesulfonate (NaDBS) provided excellent flotation of both calcium sulfite and calcium carbonate at neutral pH. For concentrations of calcium sulfite plus calcium carbonate of 3.7, 7.8, and 12.0 x 10-2 M, 95% flotation of precipitated sulfite and 97% flotation of carbonate can be accomplished at molar surfactant to sulfite plus carbonate ratios of 0.0035, 0.0023, and 0.0015, respectively.",

author = "Grieves, {Robert B.} and Schwartz, {Paul M.} and Dibakar Bhattacharyya",

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language = "English",

volume = "10",

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T2 - Application to Solids Removal from SO2 Wet-Scrubbing Slurries

AU - Grieves, Robert B.

AU - Schwartz, Paul M.

AU - Bhattacharyya, Dibakar

N1 - Funding Information: The authors wish to acknowledge gratefully the traineeship support of P. M. Schwartz by the U.S. Environmental Protection Agency through Training Grant T 900440.

PY - 1975/12

Y1 - 1975/12

N2 - An experimental study was conducted of the precipitate flotation of calcium sulfite, calcium carbonate, and of mixtures of both particulate species from suspensions of the order 0.1 M, with application to particle separation from the purge stream from a SO2-limestone wet scrubber. The strongly acidic, anionic surfactant, sodium dodecylbenzenesulfonate (NaDBS) provided excellent flotation of both calcium sulfite and calcium carbonate at neutral pH. For concentrations of calcium sulfite plus calcium carbonate of 3.7, 7.8, and 12.0 x 10-2 M, 95% flotation of precipitated sulfite and 97% flotation of carbonate can be accomplished at molar surfactant to sulfite plus carbonate ratios of 0.0035, 0.0023, and 0.0015, respectively.

AB - An experimental study was conducted of the precipitate flotation of calcium sulfite, calcium carbonate, and of mixtures of both particulate species from suspensions of the order 0.1 M, with application to particle separation from the purge stream from a SO2-limestone wet scrubber. The strongly acidic, anionic surfactant, sodium dodecylbenzenesulfonate (NaDBS) provided excellent flotation of both calcium sulfite and calcium carbonate at neutral pH. For concentrations of calcium sulfite plus calcium carbonate of 3.7, 7.8, and 12.0 x 10-2 M, 95% flotation of precipitated sulfite and 97% flotation of carbonate can be accomplished at molar surfactant to sulfite plus carbonate ratios of 0.0035, 0.0023, and 0.0015, respectively.

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Precipitate Coflotation of Calcium Sulfite and Calcium Carbonate: Application to Solids Removal from SO2 Wet-Scrubbing Slurries

Abstract

Bibliographical note

ASJC Scopus subject areas

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