Removal of phenol from wastewater using activated waste tea leaves

Kazmi, Mohsin; Saleemi, A.R.; Feroze, Nadeem; Yaqoob, Amir; Ahmad, Syed Waqas

doi:10.2478/pjct-2013-0016

Cited by 23 publications

(8 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Large quantities of husk are burned, which causes air pollution. Due to its grain structure, rice husk is insoluble in water and has high chemical strength and mechanical persistence (Kazmi et al 2013). Two of the components of rice husk are carbon and silica, which can be converted to silica and activated carbon (Tongpoothorn et al 2011;Ghosh & Bhattacherjee 2013;Cheenmatchaya & Kungwankunakorn 2014).…”

Section: Introductionmentioning

confidence: 99%

Phenol removal from aqueous solution using silica and activated carbon derived from rice husk

Asgharnia

Nasehinia

Rostami

et al. 2019

Water Practice and Technology

View full text Add to dashboard Cite

Phenol and its derivatives are organic pollutants with dangerous effects, such as poisoning, carcinogenicity, mutagenicity, and teratogenicity in humans and other organisms. In this study, the removal of phenol from aqueous solution by adsorption on silica and activated carbon of rice husk was investigated. In this regard, the effects of initial concentration of phenol, pH, dosage of the adsorbents, and contact time on the adsorption of phenol were investigated. The results showed that the maximum removal of phenol by rice husk silica (RHS) and rice husk activated carbon (RHAC) in the initial concentration of 1 mgL−1 phenol, 2 gL−1 adsorbent mass, 120 min contact time, and pH 5 (RHS) or pH 6 (RHAC) were obtained up to 91% and 97.88%, respectively. A significant correlation was also detected between increasing contact times and phenol removal for both adsorbents (p < 0.01). The adsorption process for both of the adsorbents was also more compatible with the Langmuir isotherm. The results of this study showed that RHS and RHAC can be considered as natural and inexpensive adsorbents for water treatment.

show abstract

Section: Introductionmentioning

confidence: 99%

Phenol removal from aqueous solution using silica and activated carbon derived from rice husk

Asgharnia

Nasehinia

Rostami

et al. 2019

Water Practice and Technology

View full text Add to dashboard Cite

show abstract

“…The equilibrium data for each of the phenol-adsorbent system fit the Freundlich isotherm best particularly at concentrations below 100 ppm. On the other hand, Kazmi et al (2013) investigated the efficiency of chemically activated tea leaves in the removal of phenol from its aqueous solution. The tea leaves were chemically modified by phosphoric acid and through UV-spectrophotometric analysis and through batch adsorption test; the adsorbent samples were found to show a maximum adsorption capacity of 63.13 mg/g under the optimal condition of pH 2, 180 min contact time and 2 g/L adsorbent dose.…”

Section: Removal Of Phenolmentioning

confidence: 99%

“…One particular area of interest revolved around the usage of waste tea leaves for the adsorptive purposes due to the comparatively easier availability. Tea is obtained from the leaves of the Camellia sinensis L Camellia assamica and Cambodiensis plants (Kazmi et al 2013). Although there exists a wide variety of tea in the commercial realm, those derived from the leaves of the plants mentioned above can be divided into six main categories: black, oolong, green, white, pure and dark.…”

Section: Introductionmentioning

confidence: 99%

Waste tea as a novel adsorbent: a review

et al. 2018

View full text Add to dashboard Cite

This paper surveys the various developments in the usage of tea beverage industry-based wastes for adsorption and the generation of activated carbon while emphasizing the applied methodology, removal efficiencies, characteristics of the material and the production methods. From the review, it can be determined that the tea industry-based wastes offer a promising, low-cost and effective alternative adsorbent for the removal of various effluents from the water. The full review is about the usage of waste tea as an adsorbent has been done while considering two aspects. Firstly, initial emphasis was placed on reviewing the research work on the removal of various heavy metal ions and pollutants such as copper, chromium, lead, reactive dyes and phenols using tea leaves as an adsorbent. Secondly, research work on the various activation methods and conditions, and the usage of physical and chemical activating agents such as steam, carbon dioxide, phosphoric acid, zinc chloride and potassium salts for the activation of tea leave-based activated carbon have been reviewed and presented here.

show abstract

“…Tea leaves will become solid waste once they are brewed. Hence, the utilisation of this abundantly available solid waste is the best way to deal with oil waste [13,14].…”

Section: Introductionmentioning

confidence: 99%

Potential of fatty acid-modified spent tea leaves as adsorbent for oil adsorption

Ang

Najwa

Halim

et al. 2022

PROGEE

View full text Add to dashboard Cite

Treatment of oil pollution remains a challenge due to the growing urbanisation. Thus, there is an increasing number of global studies on exploiting simple and effective methods to remove oil from water. In the present work, spent tea leaves (STL) have been modified using oleic acid (OA) and free fatty acids from waste cooking oil (FFA-WCO). The aim was to enhance the hydrophobicity of the STL so that they can act as an oil adsorbent. The functional groups of the fatty acids within the modified STL were identified using the Fourier Transform Infrared (FTIR) Spectroscopy analysis, while the surface morphology of STL was characterised using a Scanning Electron Microscope (SEM). The performance of the synthesised adsorbents for oil adsorption was tested in batch adsorption experiments. The FTIR results revealed that free fatty acids have been successfully impregnated onto the surface of STL. SEM analyses showed that the surface of the fatty acid-modified STL has smoother surfaces compared to the rougher surface of unmodified STL. From the batch adsorption test, the highest adsorption capacity was observed using 1:10 ratio of STL to WCO, with 120 min of contact time, 1 g of adsorbent dosage, and under the temperature of 45 °C. The adsorption capacity of STL@FFA-WCO at the optimum condition was 1.800 ± 0.15 g/g. For the effect of modification agents, STL that were modified using oleic acid (STL@OA) showed greater adsorption capacity of 2.267 ± 0.21 g/g. These findings proved that the fatty acid-modified STL have the potential of becoming green adsorbents for oil removal.

show abstract

Removal of phenol from wastewater using activated waste tea leaves

Cited by 23 publications

References 24 publications

Phenol removal from aqueous solution using silica and activated carbon derived from rice husk

Phenol removal from aqueous solution using silica and activated carbon derived from rice husk

Waste tea as a novel adsorbent: a review

Potential of fatty acid-modified spent tea leaves as adsorbent for oil adsorption

Contact Info

Product

Resources

About