A feasible biochar derived from biogas residue and its application in the efficient adsorption of tetracycline from an aqueous solution

Sheng, Xiaoyu; Wang, Junkai; Cui, Quantao; Zhang, Wei; Zhu, Xiao

doi:10.1016/j.envres.2021.112175

Cited by 55 publications

(19 citation statements)

References 59 publications

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“…The parameters of the thermodynamic processes involved in TC adsorption on KBC can be defined and calculated based on the subsequent equation. 55 where K d is the distribution coefficient, Δ G 0 refers to the change in Gibbs free energy (kJ·mol –1 ), Δ S 0 refers to the change in entropy (J·mol –1 ·K –1 ), Δ H 0 suggests the change in enthalpy (kJ·mol –1 ), the absolute temperature (K), and R represents the universal gas constant (8.314J·mol –1 ·K –1 ).…”

Section: Resultsmentioning

confidence: 99%

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Improved Adsorption of Tetracycline in Water by a Modified Caulis spatholobi Residue Biochar

et al. 2022

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A potassium modified biochar (KBC) using Caulis spatholobi residue as the raw material was prepared by adopting a two-step method of pyrolysis followed by high-temperature potassium hydroxide activation, and its properties were characterized. Activation using potassium hydroxide under high temperature induced the loss of CaCO 3 and partial C on biochar, which created a high specific surface area (1336.31 m 2 /g) together with a developed pore structure. pH displayed a slight influence on tetracycline adsorption, which signified the slight influence of the existence of tetracycline and the charge potential of biochar. Besides, pore filling, hydrogen bonding and π–π EDA stacking interactions possibly resulted in tetracycline adsorption on biochar. Tetracycline adsorption was fast in the original period, followed by a slower rate of adsorption until equilibrium was reached. Adsorption kinetics of tetracycline could be described using secondary and Elovich kinetic models. Adsorption isotherms for tetracycline were well fitted to the Langmuir isotherm model, and the maximum adsorption capacity of KBC was 830.78 mg/g at 318 K. According to a study of the thermodynamics, the adsorption of tetracycline on KBC was an endothermic reaction process. Corresponding results in the present study demonstrated that high-temperature potassium hydroxide activation enabled biochar to effectively eliminate tetracycline from water and wastewater.

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Section: Resultsmentioning

confidence: 99%

“…The parameters of the thermodynamic processes involved in TC adsorption on KBC can be defined and calculated based on the subsequent equation. 55…”

Section: = [ ] Qmentioning

confidence: 99%

Improved Adsorption of Tetracycline in Water by a Modified Caulis spatholobi Residue Biochar

et al. 2022

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“…At the terminal of the reaction, the prepared CG@ZIF-67(5) composite was separated by centrifugation and then washed using methanol under ultrasound for a certain time, until the remaining supernatant was colorless. The prepared CG@ZIF-67 (5) composite was finally dried in the vacuum drying oven at 60 • C for 12 h. For the change from Co(NO 3 ) 2 •6H 2 O to CG samples as 5, 10, and 15, the prepared CG@ZIF-67 samples were labeled as CG@ZIF-67(1), CG@ZIF-67 (10), and CG@ZIF-67 (15), respectively. stored for the following experiment.…”

Section: Synthesis Of Cg@zif-67 Compositementioning

confidence: 99%

“…Afterwards, the Co(NO3)2⋅6H2O (0.194 g) was directly added into the slurry containing CG and 2-MeIm solution and continuously stirred in the thermostatic heating magnetic stirrer at 250 rpm for 30 min. At the terminal of the reaction, the prepared CG@ZIF-67 (5) composite was separated by centrifugation and then washed using methanol under ultrasound for a certain time, until the remaining supernatant was colorless. The prepared CG@ZIF-67(5) composite was finally dried in the vacuum drying oven at 60 °C for 12 h. For the change from Co(NO3)2⋅6H2O to CG samples as 5, 10, and 15, the prepared CG@ZIF-67 samples were labeled as CG@ZIF-67(1), CG@ZIF-67 (10), and CG@ZIF-67 (15), respectively.…”

Section: Synthesis Of Cg@zif-67 Compositementioning

confidence: 99%

The Potential of Spent Coffee Grounds @ MOFs Composite Catalyst in Efficient Activation of PMS to Remove the Tetracycline Hydrochloride from an Aqueous Solution

Zhang

Liu

et al. 2023

Toxics

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The efficient removal of Tetracycline Hydrochloride (TC) from wastewater, which is a difficult process, has attracted increasing attention. Aiming to synchronously achieve the goal of natural waste utilization and PMS activation, we have combined the MOFs material with waste coffee grounds (CG). The catalytic activity of the CG@ZIF-67 composite in the TC removal process was thoroughly evaluated, demonstrating that the TC removal rate could reach 96.3% within 30 min at CG@ZIF-67 composite dosage of 100 mg/L, PMS concertation of 1.0 mM, unadjusted pH 6.2, and contact temperate of 293.15 K. The 1O2 and ·SO4- in the CG@ZIF-67/PMS/TC system would play the crucial role in the TC degradation process, with 1O2 acting as the primary ROS. The oxygen-containing functional groups and graphite N on the surface of CG@ZIF-67 composite would play a major role in efficiently activating PMS and correspondingly degrading TC. In addition, the CG@ZIF-67/PMS/TC system could withstand a wide pH range (3–11). The application of CG in preparing MOF-based composites will provide a new method of removing emerging pollutants from an aqueous solution.

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“…The tetracycline hydrochloride (TC) is a kind of broad-spectrum antibiotic that has been widely used to treat infections in both humans and animals in recent years [ 1 , 2 ].…”

Section: Introductionmentioning

confidence: 99%

Potential Application of Discarded Natural Coal Gangue for the Removal of Tetracycline Hydrochloride (TC) from an Aqueous Solution

Wan

Wang

Gong

et al. 2022

Toxics

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The generation and accumulation of discarded coal gangue (CG) have severe environmental impacts. CG can adsorb other pollutants in the aquatic environment. However, previous studies have not assessed whether CG can adsorb the emerging contaminant tetracycline hydrochloride (TC). Here, discarded CG taken from a mine was pretreated by crushing, cleaning, and sieving and subsequently applied to the adsorption of TC. The adsorption studies were carried out by batch equilibrium adsorption experiments. Our findings indicated that the adsorption behavior could be accurately described using the quasi-first order kinetic and Langmuir adsorption isotherm models, indicating that monolayer adsorption was the main mechanism mediating the interaction between CG and TC. The adsorption process was classified as a thermodynamic endothermic and spontaneous reaction, which was controlled by chemical and physical adsorption, including electrostatic interaction and cation exchange. The pH of the solution had a great influence on the TC adsorption capacity of GC, with higher adsorption occurring in acidic environments compared to alkaline environments. This was attributed to the changes in CG Zeta potential and TC pKa at different pH conditions. Collectively, our findings demonstrated the potential applicability of discarded CG for the adsorption of TC and provided insights into the adsorption mechanisms.

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A feasible biochar derived from biogas residue and its application in the efficient adsorption of tetracycline from an aqueous solution

Cited by 55 publications

References 59 publications

Improved Adsorption of Tetracycline in Water by a Modified Caulis spatholobi Residue Biochar

Improved Adsorption of Tetracycline in Water by a Modified Caulis spatholobi Residue Biochar

The Potential of Spent Coffee Grounds @ MOFs Composite Catalyst in Efficient Activation of PMS to Remove the Tetracycline Hydrochloride from an Aqueous Solution

Potential Application of Discarded Natural Coal Gangue for the Removal of Tetracycline Hydrochloride (TC) from an Aqueous Solution

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