Table 2 Thermogravimetric (TGA) data of unmodified acrylic fibre waste and modified acrylic fibre waste.

From: Removal of acid and basic dyes from textile wastewater using modified acrylic fibres waste as an efficient adsorbent

Sample

First stage

Second stage

Third stage

Residual weight %

Td (°C)

Weight loss%

Td (°C)

Weight loss%

Td (°C)

Weight loss%

Unmodified AFW

307

10.1

401

17.1

450

25.3

47.5

NaOH

310

17.2

390

25

480

32

25.8

NaOH/DMF

300

13.5

380

26.4

460

52.3

7.8

NaOH/ethanol

309

7.5

392

18.5

475

24.7

49.3

Na-ethoxide

308

10.5

400

16.2

455

24.9

48.4

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