Physicochemical properties of herb-residue biochar and its sorption to ionizable antibiotic sulfamethoxazole

Lian, Fei; Sun, Binbin; Song, Zhengguo; Zhu, Lingyan; Qi, Xinhua; Xing, Baoshan

doi:10.1016/j.cej.2014.03.021

Cited by 161 publications

(81 citation statements)

References 32 publications

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“…Considering the aromatic rings of SMT and the hydrophobic properties of the CM surfaces, a hydrophobic partition interaction might also contribute to SMT adsorption on CMs. However, hydrophobic partitioning interactions dominated the SMT adsorption on CM samples only under neutral conditions, because such partitioning interactions could be overwhelmed by the electrostatic force (Lian et al 2014). Therefore, hydrophobic partitioning interactions might contribute insignificantly to SMT adsorption on CM samples at high pH.…”

Section: Effects Of Ph On Smt Adsorption In Carbonized CM Samplesmentioning

confidence: 99%

Removal of sulfamethazine antibiotics using cow manure-based carbon adsorbents

Tzeng

Liu

Deng

et al. 2016

Int. J. Environ. Sci. Technol.

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Low-cost adsorbents, e.g., cow manure-based carbon, provide alternatives to remove veterinary antibiotic sulfamethazine (SMT) from contaminated water bodies. In this study, the chemical structures and compositions of cow manure (CM) carbonized at 400, 600, and 800°C (CM400, CM600, and CM800) were examined using elemental analyzer (EA), Brunauer-Emmett-Teller, and spectroscopic techniques. Adsorptions of SMT on CM samples were conducted as functions of pH, hydrophobicity, and ionic strengths. Results of EA and spectroscopic analyses suggested that the raw CM and CM400 samples contained the highest amounts of O-containing groups and aliphatic domains. Amounts of such two chemical groups decreased as carbonization temperatures increased. The specific surface areas and total pore volumes of CM samples increased significantly when the carbonization temperatures exceeded 600°C. SMT adsorption on CM samples could be described essentially by the pseudo-second-order kinetic, intra-particle diffusion, and Freundlich isotherm models. Low pH and ionic strength were favorable for SMT adsorption in CM samples, particularly for the CM800, because a strong p ? -p electron donor-acceptor interaction (p ? -p EDA) was formed between SMT and CM surfaces enriched with hydrophobic domains. Further, the high adsorption affinity of SMT to the CM600 and CM800 samples was attributed in part to their larger surface areas and total pore volumes. Generally, CM-based materials carbonized [600°C showed relatively stable structures and exhibited strong aromatic properties. Moreover, maximum adsorption capacities of SMT on the CM800 sample (37-39 mM/kg) were significantly higher than those of other common adsorbents (0.02-35.93 mM/kg).

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Section: Effects Of Ph On Smt Adsorption In Carbonized CM Samplesmentioning

confidence: 99%

Removal of sulfamethazine antibiotics using cow manure-based carbon adsorbents

Tzeng

Liu

Deng

et al. 2016

Int. J. Environ. Sci. Technol.

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“…found that the pine needle biochars produced at high pyrolytic temperatures had greater adsorption of trichloroethylene due to the increase in hydrophobicity of biochars with increasing pyrolytic temperature. However, it was reported that biochars produced from residue of a traditional Chinese medicine, Danshen, at 250 °C exhibited 2–7 times higher adsorption capacity to sulfamethoxazole than those prepared at higher temperatures . As can be seen, the influence of pyrolytic temperature varies among different biochar feedstocks and target pollutants.…”

Section: Introductionmentioning

confidence: 99%

“…However, it was reported that biochars produced from residue of a traditional Chinese medicine, Danshen, at 250 ∘ C exhibited 2-7 times higher adsorption capacity to sulfamethoxazole than those prepared at higher temperatures. 26 As can be seen, the influence of pyrolytic temperature varies among different biochar feedstocks and target pollutants. Therefore, comparative study of biochar produced at different temperatures for various antibiotics removal in aqueous environments is of significant meaning for deeper understanding of the mechanisms and further application of biochar.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of rice husk biochars for aqueous antibiotics removal

Zeng

Tian

Liu

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND Antibiotics are widely used for the treatment of bacterial infections in humans and animals, but it can be released into water sources due to incomplete metabolism in humans or via discharge from drug manufacturers. RESULTS The efficiency of removal of three antibiotics was enhanced with increasing biochar dosage. The adsorption of three antibiotics by RH700 was much higher than by RH300 and RH500, which might be due to the larger surface area and adsorption pore volume of RH700 (211.76 m2 g‐1 and 6.25 nm, respectively). In addition, the adsorption capacity was greatly affected by the solution pH, background electrolyte and humic acid. The kinetics experiment data were well fitted by the pseudo‐second‐order kinetic model. The maximum adsorption capacities of tetracycline hydrochloride (TC), doxycycline hydrochloride (DC) and ciprofloxacin (CF) based on the Langmuir model by RH700 at 318 K were 80.9, 85.2 and 36.1 mg g‐1, respectively. RH700 exhibited high affinity for antibiotics, mainly ascribed to the chemical interaction between oxygen‐containing functional groups (phenolic hydroxyl group, carboxyl and alkoxy groups) of the biochar surface and TC, DC and CF. CONCLUSION The rice husk biochar produced at high temperature could be applied as a potential adsorbent for removal of antibiotics from water. © 2017 Society of Chemical Industry

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“…The addition of biochars to soils has been assessed to be an effective practice in sequestering carbon (Lehmann 2007), increasing soil fertility (Van Zwieten et al 2010) and crop production (Major et al 2010), reducing green house gas emissions (Lehmann et al 2006), and also improving soil microbial activity (Steiner et al 2008). Recently, biochar has been reported to be particularly effective in sorption and sequestration of organic contaminants, such as polycyclic aromatic hydrocarbons (Chen and Yuan 2011), diuron (Yu et al 2006), atrazine and simazine (Zheng et al 2010), pentachlorophenol (Devi and Saroha 2015), phenanthrene (Zhang et al 2010), oxytetracycline (Jia et al 2013), sulfamethoxazole (Yao et al 2012;Lian et al 2014), and sulfamethazine (Rajapaksha et al 2014;Rajapaksha et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Adsorption Characteristics of Norfloxacin by Biochar Prepared by Cassava Dreg: Kinetics, Isotherms, and Thermodynamic Analysis

Feng¹,

Yu²,

Deng³

et al. 2015

BioResources

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Biochars (BC) generated from biomass residues have been recognized as effective sorbents for organic compounds. In this study, biochars as adsorbents for the removal of norfloxacin (NOR) from aqueous solutions were evaluated. Biochars were prepared from cassava dregs at 350 °C, 450 °C, 550 °C, 650 °C, and 750 °C, respectively (labeled as BC350, BC450, BC550, BC650, and BC750). The results showed that the kinetic data were best fitted to the pseudo second-order model, indicating that the sorption was governed by the availability of sorption sites on the biochar surfaces rather than the NOR concentration in the solution. Sorption isotherms of NOR were well described by the Freundlich model, and the Freundlich coefficients (lgkF) increased with the pyrolysis temperature of biochars. Thermodynamic analysis indicated the feasibility and spontaneity of the NOR adsorption process. The NOR adsorption on BC450, BC550, BC650, and BC750 was an endothermic process, while an exothermic process occurred for BC350. FTIR studies further suggested that the adsorption mechanism was possibly attributable to H-bond and π-π interactions between NOR and biochars. Overall, this work constitutes a basis for further research considering the bioavailability and toxicity of antibiotics in the presence of biochar.

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Physicochemical properties of herb-residue biochar and its sorption to ionizable antibiotic sulfamethoxazole

Cited by 161 publications

References 32 publications

Removal of sulfamethazine antibiotics using cow manure-based carbon adsorbents

Removal of sulfamethazine antibiotics using cow manure-based carbon adsorbents

Comparative study of rice husk biochars for aqueous antibiotics removal

Adsorption Characteristics of Norfloxacin by Biochar Prepared by Cassava Dreg: Kinetics, Isotherms, and Thermodynamic Analysis

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