. 2017 Mar 10;3(3):480–491. doi: 10.1039/c7ew00014f

Table 2.

Rates of COD, chloride, and ammonia removal as well as the nitrate production rates in the initial linear ranges of the experiments. In case of the BDD anode, COD removal was not linear with transferred charge. Thus, the COD removal rates with BDD are given at 1000 mgCOD L⁻¹ according to eqn (1) based on the calculated apparent mass transfer coefficients k_m,COD. SD denotes the standard deviation

			Removal of organic substances				Chlorideremoval		Ammonia removal		Nitrate production
			rCOD	SD	k_m,COD	SD	r_Cl−	SD	r_NH	SD	r_NO₃‐N	SD
Urine type	Electrode	j (mA cm⁻²)	(g_COD m−² d⁻¹)		(m s⁻¹)		(g_Cl− m⁻² d⁻¹)		(g_N m⁻² d⁻¹)		(g_N m⁻² d⁻¹)
High-concentration urine	BDD	20	421	38	4.9 × 10^–6	4.4 × 10⁻⁷	94	14	43	20	51	9
		15	334	26	3.9 × 10⁻⁶	3.0 × 10⁻⁷	58	9	87	5	26	1
		10	190	4	2.2 × 10⁻⁶	4.9 × 10⁻⁸	59	6	71	6	28	2
	TDIROF	20	214	24			174	13	227	16	17	1
		15	180	24			84	10	184	7	17	1
		10	150	15			20	22	147	5	28	2
Low-concentration urine	BDD	20	693	38	8.0 × 10⁻⁶	4.4 × 10^–7	268	9	—	—	95	2
		15	549	28	6.4 × 10⁻⁶	3.2 × 10⁻⁷	167	7	—	—	75	3
		10	467	26	5.4 × 10⁻⁶	3.0 × 10⁻⁷	65	5	—	—	40	2
	TDIROF	20	163	13			164	6	257	22	64	7
		15	133	2			185	22	183	27	55	6
		10	91	6			89	5	110	11	27	1