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Table 2

Detergent characteristics in grey water and wastewater

Parameters	Characteristics of grey water	Reference	Reference
Anionic surfactant or lauryl alkyl benzene sulfonate (LAS) (mg/L)	2.76– 12–	Weston (1998),¹, Rayen et al. (2015),³, Smith & Bani-Melhem (2012),⁶, Leal et al. (2012),⁸ and Braga & Varesche (2014) ¹⁰	Karimi et al. (2014),¹¹; Narkis & Weinberg (1989) ¹⁴
Non-ionic surfactant (mg/L)		Weston (1998) ¹	Narkis & Weinberg (1989) ¹⁴
Boron (mg/L)		Weston (1998),¹, Gross et al. (2007a, 2017b)²
Sodium (mg/L)		Ghunmi et al. (2008),⁵, Leal et al. (2012) ⁸
Chloride (mg/L)		Rayen et al. (2015),³, Chin et al. (2009),⁴, Ghunmi et al. (2008),⁵, Leal et al. (2012) ⁸	Ojo & Oso (2009) ¹³
Sulphate (mg/L)		Chin et al. (2009),⁴, Leal et al. (2012),⁸, Braga & Varesche (2014) ¹⁰	Ojo & Oso (2009) ¹³
Phosphates (mg/L)	0.3– 0.29– 9.8–	Ghunmi et al. (2008),⁵, Smith & Bani-Melhem (2012),⁶, Leal et al. (2012),⁸, Li et al. (2008),⁹, Braga & Varesche (2014) ¹⁰	Chirila et al. (2008),¹², Ojo & Oso (2009) ¹³
Ammonium (mg/L)	0– 5.43– 0.3–	Ghunmi et al. (2008),⁵, Smith & Bani-Melhem (2012),⁶, Pidou et al. (2008),⁷, Li et al. (2008),⁹, Braga & Varesche (2014) ¹⁰	Karimi et al. (2014),¹¹; Chirila et al. (2008),¹²; Ojo & Oso (2009) ¹³
Nitrate (mg/L)	1.03–	Smith & Bani-Melhem (2012),⁶, Braga & Varesche (2014) ¹⁰

Parameters	Characteristics of grey water	Reference	Reference
Anionic surfactant or lauryl alkyl benzene sulfonate (LAS) (mg/L)	2.76– 12–	Weston (1998),¹, Rayen et al. (2015),³, Smith & Bani-Melhem (2012),⁶, Leal et al. (2012),⁸ and Braga & Varesche (2014) ¹⁰	Karimi et al. (2014),¹¹; Narkis & Weinberg (1989) ¹⁴
Non-ionic surfactant (mg/L)		Weston (1998) ¹	Narkis & Weinberg (1989) ¹⁴
Boron (mg/L)		Weston (1998),¹, Gross et al. (2007a, 2017b)²
Sodium (mg/L)		Ghunmi et al. (2008),⁵, Leal et al. (2012) ⁸
Chloride (mg/L)		Rayen et al. (2015),³, Chin et al. (2009),⁴, Ghunmi et al. (2008),⁵, Leal et al. (2012) ⁸	Ojo & Oso (2009) ¹³
Sulphate (mg/L)		Chin et al. (2009),⁴, Leal et al. (2012),⁸, Braga & Varesche (2014) ¹⁰	Ojo & Oso (2009) ¹³
Phosphates (mg/L)	0.3– 0.29– 9.8–	Ghunmi et al. (2008),⁵, Smith & Bani-Melhem (2012),⁶, Leal et al. (2012),⁸, Li et al. (2008),⁹, Braga & Varesche (2014) ¹⁰	Chirila et al. (2008),¹², Ojo & Oso (2009) ¹³
Ammonium (mg/L)	0– 5.43– 0.3–	Ghunmi et al. (2008),⁵, Smith & Bani-Melhem (2012),⁶, Pidou et al. (2008),⁷, Li et al. (2008),⁹, Braga & Varesche (2014) ¹⁰	Karimi et al. (2014),¹¹; Chirila et al. (2008),¹²; Ojo & Oso (2009) ¹³
Nitrate (mg/L)	1.03–	Smith & Bani-Melhem (2012),⁶, Braga & Varesche (2014) ¹⁰