Evaluation of Efficacy of Anionic Surfactant Degradation in the Presence of Concomitant Impurities of Natural Waters

Table 1

Characteristics of initial solutions of ABS, humic, or fulvic acids and river waters.

Object of research	Colour value, degr.	𝐴254, cm^−1	TOC, mg/dm^3	pH	Concentration of HCO3^−, mg-eq/dm^3
ABS solution in distilled water	—	0.04	3.6	5.7	0
HA solution in distilled water	68	0.35	3.8	7.2	0
ABS and HA solution in distilled water (𝑡 = 0 or 14 days)	67–71	0.34–0.39	6.1–6.3	7.2	0
Desna River water (winter)	18	0.22	7.6	8.0	3.7
Solution of ABS in the Desna water (winter)	24	0.27	9.4	8.2	3.7
Dnieper River water; (winter)	38	0.38	12.4	7.9	3.1
Solution of ABS in the Dnieper water (winter)	38	0.42	16.1	7.8	3.1
Dnieper River water (summer)	43	0.43	17.9	8.3	2.75
Desna River water (summer)	30	0.27	14.7	8.6	3.7
Solution of FA in model water	72	0.60	16.4	8.2	2.0
Solution of FA in distilled water	58	0.54	15.8	6.0	0

Note: Initial concentration of ABS and HA—5 and 10 mg/dm³, respectively.