The content presented here represents the most current version of this section, which was printed in the 24th edition of Standard Methods for the Examination of Water and Wastewater.
Abstract: 5550 A. Introduction

Lignin is a plant constituent that often is discharged as a waste during the manufacture of paper pulp. Another plant constituent, tannin, may enter the water supply through the process of vegetable matter degradation or through the wastes of the tanning industry. Tannin also is applied in the so-called internal treatment of boiler waters, where it reduces scale formation by causing the production of a more easily handled sludge.

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Standard Methods Committee of the American Public Health Association, American Water Works Association, and Water Environment Federation. 5550 tannin and lignin In: Standard Methods For the Examination of Water and Wastewater. Lipps WC, Baxter TE, Braun-Howland E, editors. Washington DC: APHA Press.

DOI: 10.2105/SMWW.2882.110

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