Thermal decomposition of antibiotic mycelial fermentation residues in Ar, air, and CO2–N2 atmospheres by TG-FTIR method

Guo, Jiali; Zheng, Lei; Li, Zifu; Zhou, Xiaoqin; Zhang, Wei; Cheng, Shikun; Zhang, Lingling

doi:10.1007/s10973-019-08101-2

Cited by 10 publications

(3 citation statements)

References 24 publications

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“…The second stage (135–545°C) was the stage with the largest weight loss. Within this temperature range, a large number of volatile substances were separated out, and organic substances such as fat and protein were pyrolyzed into carbon and produced small molecule gases such as CO and CH 4 ( Guo et al, 2019 ). The third stage (545–805°C), which was the dehydrogenation and denitrification of organic matter and the continuous condensation stage, the TG curve tended to be gentle, meaning the mass reduction of PR became slow and tended to be stable, and continued warming will cause the collapse of the biochar pore structure ( Jiang et al, 2012 ).…”

Section: Resultsmentioning

confidence: 99%

Efficient removal of tetracycline from aqueous solution by K2CO3 activated penicillin fermentation residue biochar

et al. 2022

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In this study, biochar was prepared using penicillin fermentation residue (PR) as the raw material by different methods. The adsorption behavior and adsorption mechanism of biochar on tetracycline (TC) in an aqueous environment were investigated. The results showed that K2CO3 as an activator could effectively make porous structures, and that biochar with mesoporous or microporous could be prepared in a controlled manner with two kinds of different activation methods, the dry mixing method and the impregnation method. The dry mixing method could create more mesopores, while the impregnation method could prepare more micropores. Microporous biochar (IKBCH) with a high specific surface area could be prepared by the impregnation method combined with HCl soaking, which has an excellent adsorption effect on tetracycline. When the concentration of tetracycline was 200 mg/L, the removal rate of 99.91% could be achieved with the dosage of microporous biochar at 1 g/L. The adsorption process was in accordance with the Langmuir model and the pseudo-second-order model, respectively. The maximum adsorption capacity of IKBCH was 268.55 mg/g (25°C). The adsorption mechanisms were pore filling, π-π interaction, electrostatic adsorption, and hydrogen bond. Its stable and wide applicability adsorption process does not cause ecological pollution in the aqueous environment, and it is a promising biochar adsorbent.

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Section: Resultsmentioning

confidence: 99%

Efficient removal of tetracycline from aqueous solution by K2CO3 activated penicillin fermentation residue biochar

et al. 2022

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“…Other feasible and mature methods to treat AMRs have not been found; thus, antibiotic production is facing a big challenge. For the safe disposal of AMRs, many technologies are under research and development, including anaerobic digestion [8], hydrothermal treatment [3], microwave treatment [1], pyrolysis [2,9,10], gasification [11,12], combustion [13], and so on. Anaerobic digestion of AMRs is difficult since the residual antibiotics can suppress the microbiological process and even facilitate the development of bacterial antibiotic resistance [14,15].…”

Section: Introductionmentioning

confidence: 99%

“…In gasification, unmanageable viscous tar is generated. Generally speaking, the above-mentioned technologies are not mature, and the related reaction mechanisms and optimal reaction conditions are not clear [2,11,13].…”

Section: Introductionmentioning

confidence: 99%

Emission Characteristics of NOx and SO2 during the Combustion of Antibiotic Mycelial Residue

Zhang

et al. 2022

IJERPH

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The antibiotic mycelial residue (AMR) generated from cephalosporin C production is a hazardous organic waste, which is usually disposed of by landfilling that causes potential secondary environmental pollution. AMR combustion can be an effective method to treat AMR. In order to develop clean combustion technologies for safe disposal and energy recovery from various AMRs, the emission characteristics of NOx and SO2 from AMR combustion were studied experimentally in this work. It was found that the fuel-N is constituted by 85% protein nitrogen and 15% inorganic nitrogen, and the fuel-S by 78% inorganic sulfur and 22% organic sulfur. Nitrogen oxide emissions mainly occur at the volatile combustion stage when the temperature rises to 400 °C, while the primary sulfur oxide emission appears at the char combustion stage above 400 °C. Increasing the combustion temperature and airflow cause higher NOx emissions. High moisture content in AMR can significantly reduce the NOx emission by lowering the combustion temperature and generating more reducing gases such as CO. For the SO2 emission, the combustion temperature (700 to 900 °C), airflow and AMR water content do not seem to exhibit obvious effects. The presence of CaO significantly inhibits SO2 emission, especially for the SO2 produced during the AMR char combustion because of the good control effect on the direct emission of inorganic SO2. Employing air/fuel staging technologies in combination with in-situ desulfurization by calcium oxide/salts added in the combustor with operation temperatures lower than 900 °C should be a potential technology for the clean disposal of AMRs.

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Thermogravimetric study on oxy-fuel co-combustion characteristics of semi-coke and antibiotic filter residue

Wang

Gao

Tang

et al. 2022

J Therm Anal Calorim

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Thermal decomposition of antibiotic mycelial fermentation residues in Ar, air, and CO2–N2 atmospheres by TG-FTIR method

Cited by 10 publications

References 24 publications

Efficient removal of tetracycline from aqueous solution by K2CO3 activated penicillin fermentation residue biochar

Efficient removal of tetracycline from aqueous solution by K2CO3 activated penicillin fermentation residue biochar

Emission Characteristics of NOx and SO2 during the Combustion of Antibiotic Mycelial Residue

Thermogravimetric study on oxy-fuel co-combustion characteristics of semi-coke and antibiotic filter residue

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