Section 7.9

1 Viikari, L., Ranua, M., Kantelinen, A.,

Sundquist, J., Linko, M. 3rd International

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2 2,2′-azinobis(3-ethylbenzothiazoline-6-

sulfonic acid).

3 Call, H.P., PCT World Patent Application

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4 Call, H.P., PCT World Patent Application

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5 1-Hydroxybenzotriazole.

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7 Call, H.P., Mucke, I., J. Biotechnol.,

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9 Rochefort, D., Bourbonnais, R., Leech,

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10 ACS Symposium Series 785, Oxidative

Delignification Chemistry,

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2001.

11 Weinstock, I.A., Hill, C.L., US Patent

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12 Evtuguin, D.V., Pascoal Neto, C., Portuguese

Patent 101 857, 1996.

13 For more information on polyoxometalates

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14 Atalla, R.H., Weinstock, I.A., Bond, J.S.,

Reiner, R.S., Sonnen, D.M.,

Houtman, C.J., Heintz, R.A., Hill, C.G.,

Hill, C.L., Wemple, M.W., Geletii, Yu.V.,

Barbuzzi, E.M.G., Polyoxometalatebased

closed systems for oxidative

delignification of wood pulp fibers. In

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Delignification Chemistry,

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15 Weinstock, I.A., Barbuzzi, E.M.G.,

Wemple, M.W., Cowan, J.J., Reiner, R.S.,

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Section 7.10

1 Suss, H.U., N. Nimmerfroh, Hydrogen

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2 Suss, H.U., Personal communication,

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3 Annergren, G.E., M.G. Boman, P.E.

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4 Zolio, A., M.R. Silva, M.A.L. Peixoto,

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5 Reid, D.W., M.L. Hinck, Factors contributing

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Pulp Purification

Herbert Sixta

8.1

Introduction

The production of dissolving pulp involves the removal of short-chain carbohydrates,

Denoted as hemicelluloses, which negatively influence either the processing

Behavior of the pulp or the quality of the final product. (The technical definition

Of hemicelluloses comprises both alkali-soluble heteropolysaccharides and

Degraded cellulose soluble in the steeping lye.) Purification processes for dissolving

Pulps include both the removal of noncellulosic material (e.g., extractives, lignin,

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