Reinhard Feldmann

Mass De-acidification

Legaspi, Aquinas University

10th to 12th April 2014

History

Deacidification or Digitasation?

Recommendations

Standards: ISO 9706

Production in alcaline medium

No use of alum

Buffering substance (Calcium carbonate 2 %)

No use of wood fibres (no Lignin)

Paper decay and mass de-acidification

Mass de-acidification I: Introduction

Deacidification methods

Deacidification methods

Solvents

Fine dust method

Aqueous treatment

Deacidification methods

Deacidification (solvents): Papersave

Deacidification methods

Deacidification (fine dust): bookkeeper

Deacidification methods

Deacidification (aqueous): GSK

Deacidification methods

Deacidification (nonaqueous): GSK

Necessity of paper deacidification

1798 First paper making maschine

1807 Invention of Illig

1807 Industrially produced paper

1844 Wood as a new source

Since1980/1990: Neutral or alcaline production

Mass deacidification II: Special problems and workflow

Conclusions | Practical hints | Agenda:

Detailed recording system

Information exchange

Internal check of workflow

Regular reporting

Scientific evaluation

Mass deacidification

1.) Pre-Cleaning of the books

2.) Deacidification and drying

Observing the books during the deacidification process.

Process-Center (automatic unit) for deacidification. Results are recorded for control

Filter for extraction of dust and dirt

Testing pen for pH value of the paper