Tors affecting the stability and behavior of grassy odors in drinking water

Khiari, D.; Young, Connie C.; Amah, Ginachi; Ye, Quanfang; Atasi, Khalil Z.; Huddleston, Judith; Suffet, I. H.

doi:10.1016/s0273-1223(99)00570-3

Cited by 6 publications

(1 citation statement)

References 3 publications

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“…Alkyl sulfides such as dimethyl disulfide (DMDS) and dimethyl trisulfide (DMTS) impart septic and swampy odors to the water and are mainly formed due to the decomposition of dead algae and other organisms in source waters (Chen et al, 2010;Guo et al, 2019;Jiang et al, 2016). Compounds such as cis-3-hexenol (c3HO) and cis-3-hexenyl acetate (c3HA) have been reported to impart grassy odors and are released by algae and larger phytoplankton (Khiari et al, 1999;Peter & Von Gunten, 2007;Suffet et al, 2004). In addition to algal organic compounds, synthetic organic compounds such as dioxanes, dioxolanes, phthalates, and esters have previously caused T&O issues during chemical spill events (Boleda et al, 2007;Bruchet et al, 2007;Quintana et al, 2016).…”

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Treatability of 18 taste and odor compounds in drinking water using oxidation

et al. 2023

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The occurrence of taste and odor (T&O) compounds in drinking water can lead to public concern about quality when left unaddressed, therefore suitable treatment is needed. This study evaluated the treatability of 18 T&O compounds using chlorine, permanganate, and ozone in MilliQ and river water. Nine T&O compounds showed complete oxidation (>99% removal) in all water matrices by ozone. Most of the remaining T&O compounds were removed to >50% by ozone. Alkalinity, pH, and natural organic matter (NOM) had a significant impact on the decay of ozone. Chlorine and permanganate were ineffective (removal <30%) for 2-methylisoborneol (2-MIB), geosmin, hexanal, pyrazines, and haloanisoles. Although chlorine achieved complete removal for alkyl sulfides and indole, it was only partially effective for aldehydes and ketones. Permanganate was more effective than chlorine in oxidizing unsaturated aldehydes and ketones. Increased NOM and pH reduced oxidation effectiveness for chlorine, but not permanganate.

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