Seasonality in negative removal of Pharmaceutical and Personal Care Products at the Himalayan Foothills Wastewater Treatment Plants

Rahul Silori; Durga Madhab Mahapatra; Syed Mohammad Tauseef; Pinakshi Biswas; Bhanu Prakash Vellanki; Ritusmita Goswami; Mats Leifels; Abrahan Mora; Jürgen Mahlknecht; Manish Kumar

doi:10.1016/j.jece.2025.116803

Seasonality in negative removal of Pharmaceutical and Personal Care Products at the Himalayan Foothills Wastewater Treatment Plants

Rahul Silori, Durga Madhab Mahapatra, Syed Mohammad Tauseef, Pinakshi Biswas, Bhanu Prakash Vellanki, Ritusmita Goswami, Mats Leifels, Abrahan Mora, Jürgen Mahlknecht, Manish Kumar

Division of Water Quality and Health

Research output: Journal article (peer-reviewed) › Journal article

Abstract

Seasonal trends in negative removal, where effluents concentrations exceeded influent levels, were predominantly observed while monitoring seven pharmaceuticals and personal care products (PPCPs) in the Himalayan capital city of Uttarakhand, India. The findings showed consistent presence of Diclofenac and Caffeine in the influent samples, with significant seasonal variations. Higher mean PPCP levels were observed during spring, followed by the monsoon and summer. Specifically, Caffeine reached its peak concentration (71,000ng/L) during the monsoon, while Ciprofloxacin levels were highest (17,000ng/L) in the spring. The normality tests showed that the data distribution for all wastewater PPCPs samples, except for Caffeine influents, was non-normal (p>0.05). A significant difference in PPCPs concentration between influent and effluent samples (p

Original language	English
Journal	Journal of Environmental Chemical Engineering
DOIs	https://doi.org/10.1016/j.jece.2025.116803
Publication status	Accepted/In press - Apr 2025

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10.1016/j.jece.2025.116803

https://www.sciencedirect.com/science/article/pii/S221334372501499X

Cite this

Silori, R., Mahapatra, D. M., Tauseef, S. M., Biswas, P., Vellanki, B. P., Goswami, R., Leifels, M., Mora, A., Mahlknecht, J., & Kumar, M. (Accepted/In press). Seasonality in negative removal of Pharmaceutical and Personal Care Products at the Himalayan Foothills Wastewater Treatment Plants. Journal of Environmental Chemical Engineering. https://doi.org/10.1016/j.jece.2025.116803

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title = "Seasonality in negative removal of Pharmaceutical and Personal Care Products at the Himalayan Foothills Wastewater Treatment Plants",

abstract = "Seasonal trends in negative removal, where effluents concentrations exceeded influent levels, were predominantly observed while monitoring seven pharmaceuticals and personal care products (PPCPs) in the Himalayan capital city of Uttarakhand, India. The findings showed consistent presence of Diclofenac and Caffeine in the influent samples, with significant seasonal variations. Higher mean PPCP levels were observed during spring, followed by the monsoon and summer. Specifically, Caffeine reached its peak concentration (71,000ng/L) during the monsoon, while Ciprofloxacin levels were highest (17,000ng/L) in the spring. The normality tests showed that the data distribution for all wastewater PPCPs samples, except for Caffeine influents, was non-normal (p>0.05). A significant difference in PPCPs concentration between influent and effluent samples (p",

keywords = "Pharmaceuticals and personal care products, emerging contaminants, wastewater treatment plants, occurrence, seasonal variation",

author = "Rahul Silori and Mahapatra, {Durga Madhab} and Tauseef, {Syed Mohammad} and Pinakshi Biswas and Vellanki, {Bhanu Prakash} and Ritusmita Goswami and Mats Leifels and Abrahan Mora and J{\"u}rgen Mahlknecht and Manish Kumar",

year = "2025",

month = apr,

doi = "10.1016/j.jece.2025.116803",

language = "English",

journal = "Journal of Environmental Chemical Engineering",

issn = "2213-3437",

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TY - JOUR

T1 - Seasonality in negative removal of Pharmaceutical and Personal Care Products at the Himalayan Foothills Wastewater Treatment Plants

AU - Silori, Rahul

AU - Mahapatra, Durga Madhab

AU - Tauseef, Syed Mohammad

AU - Biswas, Pinakshi

AU - Vellanki, Bhanu Prakash

AU - Goswami, Ritusmita

AU - Leifels, Mats

AU - Mora, Abrahan

AU - Mahlknecht, Jürgen

AU - Kumar, Manish

PY - 2025/4

Y1 - 2025/4

N2 - Seasonal trends in negative removal, where effluents concentrations exceeded influent levels, were predominantly observed while monitoring seven pharmaceuticals and personal care products (PPCPs) in the Himalayan capital city of Uttarakhand, India. The findings showed consistent presence of Diclofenac and Caffeine in the influent samples, with significant seasonal variations. Higher mean PPCP levels were observed during spring, followed by the monsoon and summer. Specifically, Caffeine reached its peak concentration (71,000ng/L) during the monsoon, while Ciprofloxacin levels were highest (17,000ng/L) in the spring. The normality tests showed that the data distribution for all wastewater PPCPs samples, except for Caffeine influents, was non-normal (p>0.05). A significant difference in PPCPs concentration between influent and effluent samples (p

AB - Seasonal trends in negative removal, where effluents concentrations exceeded influent levels, were predominantly observed while monitoring seven pharmaceuticals and personal care products (PPCPs) in the Himalayan capital city of Uttarakhand, India. The findings showed consistent presence of Diclofenac and Caffeine in the influent samples, with significant seasonal variations. Higher mean PPCP levels were observed during spring, followed by the monsoon and summer. Specifically, Caffeine reached its peak concentration (71,000ng/L) during the monsoon, while Ciprofloxacin levels were highest (17,000ng/L) in the spring. The normality tests showed that the data distribution for all wastewater PPCPs samples, except for Caffeine influents, was non-normal (p>0.05). A significant difference in PPCPs concentration between influent and effluent samples (p

KW - Pharmaceuticals and personal care products

KW - emerging contaminants, wastewater treatment plants

KW - occurrence

KW - seasonal variation

U2 - 10.1016/j.jece.2025.116803

DO - 10.1016/j.jece.2025.116803

M3 - Journal article

SN - 2213-3437

JO - Journal of Environmental Chemical Engineering

JF - Journal of Environmental Chemical Engineering

ER -