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Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 2 The amount of 133Cs (μg) in each component after kraft cooking 1.5 g of chips

From: Decontamination of Cs from Japanese cedar (Cryptomeria japonica) via kraft cooking

 

Chip

Pulp

1st black liquor

2nd black liquor

3rd black liquor

1st supernatant

1st precipitation

2nd supernatant

2nd precipitation

3rd supernatant

3rd precipitation

Bark

2690

128 ± 95

216 ± 1450

11 ± 8.8

522 ± 390

1.4 ± 1.3

227 ± 168

0.94 ± 0.97

Sapwood

6.2

0.033 ± 0.025

2.7 ± 0.38

0.0026 ± 0.0006

1.7 ± 0.1

0.0021 ± 0.0005

1.1 ± 0.4

0.00060 ± 0.00043

Heartwood

1.6

0.014 ± 0.003

0.96 ± 0.12

0.0053 ± 0.0009

0.39 ± 0.07

ND

0.33 ± 0.09

ND

  1. The values are the mean ± standard deviation of three replicates
  2. The bark and wood chips were thoroughly homogenized and only one sample was analyzed
  3. ND not detected
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