Spent tea leaves: A new non-conventional and low-cost biosorbent for ethylene removal

Tzeng, Jing-Hua; Weng, Chih‐Huang; Huang, Jenn-Wen; Lin, Yu-Hao; Lai, Chung-Wei; Lin, Yung-Hsiang

doi:10.1016/j.ibiod.2015.05.012

Cited by 18 publications

(3 citation statements)

References 30 publications

(33 reference statements)

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“…S3). The E a value of an adsorption process higher than 42 kJ mol −1 indicates that the process is related to chemical adsorption and it is a surface‐reaction‐controlled process . Based on the results of FTIR analysis (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The E a value of an adsorption process higher than 42 kJ mol −1 indicates that the process is related to chemical adsorption and it is a surface-reaction-controlled process. 34,35 Based on the results of FTIR analysis (Fig. 5), the functional groups of CH single bonds appeared on the Pd/zeolite surface as CH 3 species after adsorption.…”

Section: Ethylene Reductionmentioning

confidence: 99%

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Application of palladium‐modified zeolite for prolonging post‐harvest shelf life of banana

et al. 2019

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BACKGROUND The marketability of banana is limited by the rapid rate of ripening. However, the traditional post‐harvest technologies may not be desirable. The aim of this study was to investigate the potential of a reusable material for the food preservation industry. RESULTS The nanocomposite‐based palladium (Pd)‐modified zeolite (Pd/zeolite) was prepared by impregnating Pd into zeolite. Pd/zeolite had a Brunauer–Emmett–Teller dinitrogen specific surface area of 475 m2 g−1 with crystal structure similar to Y‐zeolite. Transmission electron microscopy images showed the dispersion of Pd particles over the multi‐pore zeolite support. Pd/zeolite uniquely acted as an adsorbent and a catalyst and was able to remove ethylene even after reaching breakthrough point. To prove Pd/zeolite is reusable, a 99 ± 0.8% ethylene removal efficiency still remained even after five consecutive cycles with repeated use of Pd/zeolite. The presence of Pd/zeolite significantly decreased the ethylene concentration during 18 days of storage at 20 ± 2 °C. CONCLUSIONS Pd/zeolite could delay the ripening of banana and improve its firmness and the peel color significantly. Findings indicated that the as‐prepared Pd/zeolite is an effective adsorbent/catalyst with high potential for practical application in ethylene removal, especially for the post‐harvest period. © 2019 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Section: Ethylene Reductionmentioning

confidence: 99%

Application of palladium‐modified zeolite for prolonging post‐harvest shelf life of banana

et al. 2019

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“…Therefore, it is necessary to take full advantage of TW to avoid environmental pollution and resource waste. TW has been widely investigated for the removal of various pollutants such as dyes 35 , oxytetracycline 36 , ethylene 37 , As and Ni 38 , Cu 39 , Cd 40 , Pb 41 and Hg 0 42 . To the best of our knowledge, few studies have applied TW as an adsorbent for the adsorption of uranium from aqueous solutions 43–46 , and the maximum sorption capacities ( Q m ) for uranium loading by TW obtained in these reports are low (<150 mg/g).…”

Section: Introductionmentioning

confidence: 99%

Preparation of a magnetic reduced-graphene oxide/tea waste composite for high-efficiency sorption of uranium

Yang

Zhu

et al. 2019

Sci Rep

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The preparation and application of adsorptive materials with low cost and high-efficiency recovery of uranium from nuclear waste is necessary for the development of sustainable, clean energy resources and to avoid nuclear pollution. In this work, the capacity of tea waste and tea waste hybrids as inexpensive sorbents for uranium removal from water solutions was investigated. Composites of graphene oxide (GO) and tea waste (TW) exhibited a promising adsorption performance for uranium from aqueous solutions. The composites GOTW and magnetic rGO/Fe 3 O 4 /TW show high adsorption capacities ( Q m (TW) = 91.72 mg/g, Q m (GOTW) = 111.61 mg/g and Q m (rGO/Fe3O4/TW) = 104.95 mg/g) and removal rates (~99%) for U(VI). The equilibrium sorption of the adsorbents fitted well to the Langmuir model, and the sorption rate fitted well to a pseudo-second-order kinetic model. The thermodynamic parameters indicated that sorption was spontaneous and favourable. The prepared adsorbents were used for the removal of uranium from real water samples as well. The results revealed that GOTW and rGO/Fe 3 O 4 /TW can be used to remediate nuclear industrial effluent as a potential adsorbent.

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Metal‐Organic Framework Adsorbents for Indutrial Heavy‐Metal Wastewater Treatment

Sonkar

2023

Metal Organic Frameworks for Wastewater Contaminant Removal

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Spent tea leaves: A new non-conventional and low-cost biosorbent for ethylene removal

Cited by 18 publications

References 30 publications

Application of palladium‐modified zeolite for prolonging post‐harvest shelf life of banana

Application of palladium‐modified zeolite for prolonging post‐harvest shelf life of banana

Preparation of a magnetic reduced-graphene oxide/tea waste composite for high-efficiency sorption of uranium

Metal‐Organic Framework Adsorbents for Indutrial Heavy‐Metal Wastewater Treatment

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