Table 1 The EPR Parameters (g-factors) of EPFRs in SHC at 120 °C and 270 °C under different residence times and different pH.

From: Assessing the effect on the generation of environmentally persistent free radicals in hydrothermal carbonization of sewage sludge

Time/h

t/°C

pH

t/°C

120

270

120

270

0.5

2.00417

2.00291

2

2.00460

2.00299

2

2.00425

2.00292

4

2.00440

2.00298

4

2.00447

2.00297

6

2.00416

2.00297

6

2.00441

2.00293

8

2.00406

2.00296

7

2.00421

2.00290

10

2.00408

2.00295

   

12

2.00413

2.00293

  1. aThe experiments under different residence time were conducted at pH = 7.
  2. bThe effect of initial pH on EPFRs was experimented under 2 h residence time.
Back to article page