Gaseous emission and ash characteristics from combustion of high ash content antibiotic mycelial residue in fluidized bed and the impact of additional water vapor

Zhang, Guangyi; Liu, Huan; Ge, Yaxin; Gao, Shiqiu

doi:10.1016/j.fuel.2017.04.028

Cited by 20 publications

(9 citation statements)

References 31 publications

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“…The gas supply system consists of an air cylinder and a mass flow controller. A flue gas analyzer (Model 3080, Beijing SDL Technology, Beijing, China) equipped with a NO x converter (convert NO 2 to NO) is connected to the outlet of the outer reactor to monitor the online concentration of O 2 , CO 2 , NO x , and SO 2 [16][17][18][19].…”

Section: Fixed Bed Combustormentioning

confidence: 99%

“…converter (convert NO2 to NO) is connected to the outlet of the outer reactor the online concentration of O2, CO2, NOx, and SO2 [16][17][18][19]. For the combustion tests in the fixed bed, 0.25 g AMR was blended wit sand to maintain a certain bed height to enhance gas-solid interaction and pre ble ash agglomeration at the plate during combustion [17].…”

Section: Fixed Bed Combustormentioning

confidence: 99%

“…The second NO x emission peak contained two sub-peaks, which should be associated with the unstable combustion process for the water-containing samples, as shown by the O 2 consumption curves. The occurrence of the first weak peak at 0-50 s might be explained by the devolatilization of the N-containing species, which is kept at a low level by the high concentration of CO and thus the reduction effect of CO on NO x (2NO + 2CO = N 2 +2CO 2 ) [16,37]. Thus, NO x reaches a small peak (at 25 s), then decreases due to the reducing atmosphere, and then increases again at 40-45 s because the reducing matters are consumed by O 2 .…”

Section: Effect Of Water Contentmentioning

confidence: 99%

“…For the disposal of solid waste from the pharmaceutical industry, combustion is the simplest and most commonly used method around the world. By combustion, solid wastes are safely disposed of, and the energy of the organic materials can be recovered simultaneously [16]. At present, a few antibiotic factories in China have started to employ combustion technology for AMR disposal [13].…”

Section: Introductionmentioning

confidence: 99%

“…Ma et al [17,18] found that the combination of hydrothermal pretreatment and air-stage combustion can significantly reduce NO emissions. Zhang et al [16] simulated the combustion of water-rich AMRs by adding steam to a fluidized bed and showed a clear decrease in NO emission by water vapor addition. On the other hand, SO 2 emissions would be kept at a high concentration and might not be affected by steam.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Fixed Bed Combustormentioning

confidence: 99%

Section: Fixed Bed Combustormentioning

confidence: 99%

Section: Effect Of Water Contentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Zhang

et al. 2022

IJERPH

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Co‐Combustion of Oil Sludge Char and Brown Coal in a Continuous Fluidized‐Bed Combustor

Shi

Qiao

Zhang

et al. 2022

Chemie Ingenieur Technik

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Ing. Joachim Werther on the occasion of his 80th birthdayFor developing technologies for innocent disposal of/energy recovery from high-ash oil sludge char (OSC), it was continuously combusted in a 10 kg h -1 fluidized-bed combustor. Addition of brown coal (BC) improved its combustion, but excessive BC was prone to cause slagging. Fine coke particles in OSC and volatiles in BC led to staged temperatures along the fluidized bed through air-staging co-combustion, enabling excellent combustion performance as well as efficient NO x reduction, especially when coupled with selective non-catalytic reduction. Thus, there is a potential to cleanly recover energy from OSC by its co-combustion with BC.

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Removal of cefuroxime from aqueous solution by biochars derived from antibiotic mycelial residue

Ren,

Li,

Feng

et al. 2024

Environ Sci Pollut Res

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Gaseous emission and ash characteristics from combustion of high ash content antibiotic mycelial residue in fluidized bed and the impact of additional water vapor

Cited by 20 publications

References 31 publications

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

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

Co‐Combustion of Oil Sludge Char and Brown Coal in a Continuous Fluidized‐Bed Combustor

Removal of cefuroxime from aqueous solution by biochars derived from antibiotic mycelial residue

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