Emerging contaminant (Triclosan) removal by adsorption and oxidation process: comparative study
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ORIGINAL ARTICLE
Emerging contaminant (Triclosan) removal by adsorption and oxidation process: comparative study Shruti Jagini1 · Sindhu Thaduri1 · Srilatha Konda1 · Vijaya Krishna Saranga1 · Bhagawan Dheeravath1 · Himabindu Vurimindi1 Received: 13 August 2020 / Accepted: 17 October 2020 © Springer Nature Switzerland AG 2020
Abstract Triclosan is an antibacterial and antifungal agent present in a wide range of personal care products, including toothpaste, soaps, detergents, and surgical and surface cleaning agents. Many studies have been conducted to investigate the toxic potential of Triclosan (TCS) on human health, plants, and the environment, and it has been reported to be an endocrine disruptor. This study addresses the removal efficiency of TCS using nano-zerovalent iron (nZVI), multi-walled carbon nanotubes (MWCNTs), and carbon filter. Wherein, nZVI is synthesized by an environmentally benign method, i.e., using Camellia Sinensis (Tea) extract used as a reducing agent and carbon filter is prepared by coating MWCNTs onto the cotton cloth. Removal efficiency has been studied for TCS at different operational parameters such as concentrations of TCS from (5 to 20 ppm), dosages of nZVI and dosage of MWCNTs (0.05–0.3 g/l) and pH (3–11). Results of this study indicate that, till a concentration of 5 ppm, 0.1 g/lit dosage of nZVI and MWCNTs has shown a removal efficiency of 97.07 and 100% at reaction time of 40 and 20 min, respectively. An incorporation carbon filter has been proven an efficient than dispersing MWCNTs in aqueous solutions. Graphic abstract
(SOAPS)
(HAND WASHES)
TRICLOSAN (TOOTH PASTE)
Environmental transformaon products
Methyl Triclosan
Phenolate Triclosan
Treatment using
(DEODORANTS)
(BODY LOTIONS)
Nano Iron
Nano carbon
Carbon Filter
Extended author information available on the last page of the article
13
Vol.:(0123456789)
Modeling Earth Systems and Environment
Keywords Triclosan · Personal care products · Nano-zerovalent iron · Multi-walled carbon nanotubes
Introduction Pollutants from personal care products (PCPs), pharmaceuticals, industrial effluents, fertilizers, and pesticides are classified as emerging contaminants (ECs). These ECs have been given much attention due to their deleterious effects on human life, plants, and animals. Triclosan (TCS; 5-chloro2-[2,4-dichlorophenoxy]-phenol), a broad-spectrum antibiotic, whose properties are depicted in Table 1, is under the category of emerging contaminants. It is a widely found contaminant due to its ubiquitous application in PCPs like soaps, detergents, and toothpastes as antibacterial agents. Concentrations of TCS have been detected in surface waters, wastewater treatment plants; human bodies (blood, breast milk, and urine samples) across the world as studied by Blair et al. (2013), Nishi et al. (2008), Lee (2015), Iyer et al. (2018), Ramaswamya et al. (2011)) concentrations reported were ranging from 0.2 × 10–3 to 5160 × 10–3 μg/l, 0.05 to 5.037 μg/l, and 0.08 to 898 μg/g, respectively. The presence of TCS in streams w
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