Efficient Removal of Diclofenac from Aqueous Solution by Potassium Ferrate-Activated Porous Graphitic Biochar: Ambient Condition Influences and Adsorption Mechanism

Tâm, Nguyễn Thị; Liu, Yunguo; Bashir, Hassan; Yin, Zhaoyi; He, Yuan; Zhou, Xudong

doi:10.3390/ijerph17010291

Cited by 39 publications

(5 citation statements)

References 84 publications

(51 reference statements)

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“…The O/C value is usually uesd to reflect the aromaticity of the materials, and the increase in the value of O/C after the addition of K 2 FeO 4 indicates an increase in the aromaticity of the materials. These changes were attributed to the catalytic and thermochemical reactions of K 2 FeO 4 in HTC 42 …”

Section: Resultsmentioning

confidence: 99%

“…These changes were attributed to the catalytic and thermochemical reactions of K 2 FeO 4 in HTC. 42 Figure 3 shows the C1s spectra of the samples; HTC-C can be clearly observed at 284.85, 285.99, and 286.87 eV with three peaks at sp 2 C, sp 3 C, and C O, respectively. In addition, the hydrochar prepared by the addition of K 2 FeO 4 exhibited a peak at 288.6 eV, indicating the presence of the carboxyl group of acid, ester, or lactone in the esterification reaction of HTC (C=O).…”

Section: Pore Structure Analysis (Bet)mentioning

confidence: 99%

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Preparation of hydrochar by one‐step hydrothermal carbonization with potassium ferrate‐assisted activation for the removal of tetracycline in water

Zhou

Bao

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUND: Woody biomass has a low hydrothermal-carbonization (HTC) degree and the hydrolysis process of some of its components is similar to that of saccharides. To improve the adsorption performance of wood-chips hydrothermal char (hydrochar) for tetracycline in water, molasses and potassium ferrate (K 2 FeO 4 ) were added to its HTC process; K 2 FeO 4 catalyzed the carbonization of raw materials and the surface of wood chips and saccharides in molasses, along with the iron ions mutually polymerized, added more reactive-oxygen functional groups to the hydrochar surface. The effects of K 2 FeO 4 and molasses on the morphology, pore structure, surface oxygen-containing functional groups, and tetracycline-adsorption properties of hydrothermal carbon were investigated. RESULTS:The strong oxidizing properties of K 2 FeO 4 promoted the hydrolysis of raw material. The modified hydrochar formed more oxygen-containing functional groups and produced Fe O bonds with an increased specific surface area. For the adsorption of tetracycline in water, the pseudo-second-order kinetic model and Freundlich isotherm were more consistent with the hydrochar-adsorption process. The adsorption mechanism favored a combination of physical and chemical adsorption, with chemisorption being predominant. The maximum tetracycline-adsorption capacity of HTC-0.15Fe was 119.7 mg g −1 , which is significantly higher than that of unmodified hydrochar HTC-C (56.4 mg g −1 ). Furthermore, molasses addition effectively improved the hydrochar structure, forming carbon-coated iron-core particles on its surface, which increased adsorption performance.CONCLUSION: K 2 FeO 4 -catalyzed hydrochar produced from wood chips and sugarcane molasses is an effective adsorbent for tetracycline removal from water. This work provides innovative insights into the recycling and effective use of wood chips and molasses for environmental remediation and waste treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Pore Structure Analysis (Bet)mentioning

confidence: 99%

Preparation of hydrochar by one‐step hydrothermal carbonization with potassium ferrate‐assisted activation for the removal of tetracycline in water

Zhou

Bao

et al. 2023

J of Chemical Tech & Biotech

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“…With high adsorption capacity and reusability, Fe@BC was found to be a promising absorbent for DCF removal from water as well as for water purification applications. Table 4 shows the DCF adsorption capacity of various adsorbents (from agricultural waste) compared to Fe@BC as reported by Thi et al, (2019). This vividly shows the sorption efficiency of adsorbents produced from agricultural waste in the adsorption of pharmaceutical pollutants.…”

Section: Removal Of Pharmaceutical Pollutants In Wastewater Using Agrmentioning

confidence: 90%

“…Those advantageous characteristics contribute to the increase in the adsorption capacity of activated biochar. Thi et al, (2019) studied the adsorption of diclofenac from aqueous solution using potassium ferrate activated porous graphitic biochar as the adsorbent and concluded that the method was greatly simplified, cost-effective, highly efficient, strongly reproducible, and economical because of the abundance of raw material. Porous graphitic biochar was synthesized by one-step treatment biomass using potassium ferrate (K2FeO4) as an activator for both carbonization and graphitization processes.…”

Section: Removal Of Pharmaceutical Pollutants In Wastewater Using Agrmentioning

confidence: 99%

Application of Agricultural Waste for the Adsorption of Pharmaceutical Pollutants in Wastewater: A Review

Dada

2021

LAUJOCES

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Modernization and growth in population have contributed to the continuous release of new and emerging chemical compounds (such as pharmaceuticals) into water sources. The importance of pharmaceuticals can never be overemphasized due to their great potential and effectiveness in the body system. However, improper management of their effluents which eventually ends up in the water in our environment has always been an issue of great concern. This led to the need for the purification of the contaminated water (wastewater). Over time, many methods of wastewater purification have been employed in the treatment of the wastewater, but yet, adsorption has been found and established to be an optimum option for the task due to its effectiveness, availability, affordability, and durability. Adsorption is a separation technique that takes place on the surface of a material or through a component called an adsorbent, and the effectiveness of this method is a function of the adsorbent capacity, contact time, temperature, and other related parameters. For adsorbent preparation, many materials have been considered and proven to be active and effective. However, in this paper, synthesizing agricultural wastes as the adsorbent in the adsorption of pharmaceutical effluents is reviewed with references, to further attest to its prominence in adsorption.

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“…Different sorption studies of diclofenac are reported in the literature. The highest bioremoval efficacies were obtained with carbon nanotubes [26], clays [27], and biochars [28] as sorbents. Raw lignocellulosic biomass was also used as a low-cost biosorbent, but the achieved efficiency was not as high as that with previous sorbents [29,30].…”

Section: Introductionmentioning

confidence: 99%

Removal of Diclofenac in Wastewater Using Biosorption and Advanced Oxidation Techniques: Comparative Results

Angosto

Roca

Fernández-López

2020

Water

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Wastewater treatment is a topic of primary interest with regard to the environment. Diclofenac is a common analgesic drug often detected in wastewater and surface water. In this paper, three commonly available agrifood waste types (artichoke agrowaste, olive-mill residues, and citrus waste) were reused as sorbents of diclofenac present in aqueous effluents. Citrus-waste biomass for a dose of 2 g·L−1 allowed for removing 99.7% of diclofenac present in the initial sample, with a sorption capacity of 9 mg of adsorbed diclofenac for each gram of used biomass. The respective values obtained for olive-mill residues and artichoke agrowaste were around 4.15 mg·g−1. Advanced oxidation processes with UV/H2O2 and UV/HOCl were shown to be effective treatments for the elimination of diclofenac. A significant reduction in chemical oxygen demand (COD; 40–48%) was also achieved with these oxidation treatments. Despite the lesser effectiveness of the sorption process, it should be considered that the reuse and valorization of these lignocellulosic agrifood residues would facilitate the fostering of a circular economy.

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Efficient Removal of Diclofenac from Aqueous Solution by Potassium Ferrate-Activated Porous Graphitic Biochar: Ambient Condition Influences and Adsorption Mechanism

Cited by 39 publications

References 84 publications

Preparation of hydrochar by one‐step hydrothermal carbonization with potassium ferrate‐assisted activation for the removal of tetracycline in water

Preparation of hydrochar by one‐step hydrothermal carbonization with potassium ferrate‐assisted activation for the removal of tetracycline in water

Application of Agricultural Waste for the Adsorption of Pharmaceutical Pollutants in Wastewater: A Review

Removal of Diclofenac in Wastewater Using Biosorption and Advanced Oxidation Techniques: Comparative Results

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