Biodegradation of isothiazolone biocide (Kathon WT) and treatment efficiency in a laboratory-scale rotating biological contactor

Laopaiboon, Lakkana; Laopaiboon, Pattana

doi:10.1016/j.jbiotec.2010.09.064

Cited by 1 publication

(3 citation statements)

References 1 publication

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“…Struvite is a well-known compound for extracting phosphate from urine, but it has limited ability to adsorb pharmaceuticals during struvite formation. , Because Kathon is an organic compound that is highly soluble, Kathon theoretically cannot be effectively adsorbed by struvite. Moreover, Kathon is easily biodegradable . Although Kathon may have an inhibitory effect on the nitrification process, any residual Kathon can undergo biodegradation.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, Kathon is easily biodegradable. 24 Although Kathon may have an inhibitory effect on the nitrification process, any residual Kathon can undergo biodegradation.…”

Section: Performance Of the Urine Stabilization Product In Urinementioning

confidence: 99%

“…Other chemicals such as Kathon, formaldehyde, sodium diacetate, and camphor have been widely used as biocides. , Camphor balls primarily consist of 1,4-dichlorobenzene (1,4-DCB) are commonly employed as an insecticide, a fungicide, and a deodorant in urinals to repel pests and maintain indoor cleanliness and hygiene . Kathon is a broad-spectrum bactericide that is effective against yeast, fungi, Gram-positive bacteria, heterotrophic bacteria, and algae, making it widely used for sterilization and preservation .…”

Section: Introductionmentioning

confidence: 99%

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Novel Approach for Fresh Urine Stabilization during Collection and Storage

Liu,

Merenda,

Guo

et al. 2024

Environ. Sci. Technol. Lett.

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Waterless urinals are critical in urine diversion systems aimed at nutrient recovery for a circular economy. However, the existence of urease can trigger urea hydrolysis, causing mineral precipitation in waterless urinals and pipes, which leads to nitrogen loss and unpleasant odors. This research focuses on creating a urine stabilization product (USP) by combining camphor, ketone, and citric acid in specific ratios to prevent urea hydrolysis in waterless urinals. The effectiveness of the USP was evaluated using pH, urea, phosphate, and ammonium data in real urine samples. The results showed that the USP inhibited 70% of urea hydrolysis and reduced the pH. The introduction of camphor was found to decrease the diversity of the microbial community, while the Kathon preservative serves as the key active ingredient, significantly affecting urea hydrolysis rates during storage. The developed USP demonstrated a rate of inhibition of the total biomass in urine of ∼80%, with only slight bacterial regrowth over 9 days. Practically, the USP is expected to treat ≤300 L of urine, which is roughly equivalent to 2000 instances of urination. To the best of our knowledge, this study is the first to develop a slow-release USP specifically designed to inhibit urea hydrolysis in waterless urinals.

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Section: Resultsmentioning

confidence: 99%

“…Moreover, Kathon is easily biodegradable. 24 Although Kathon may have an inhibitory effect on the nitrification process, any residual Kathon can undergo biodegradation.…”

Section: Performance Of the Urine Stabilization Product In Urinementioning

confidence: 99%