Characterization of odorous charge and photochemical reactivity of VOC emissions from a full-scale food waste treatment plant in China

The disposal of a large amount of biogas residue from anaerobically digested food waste is a burden for biogas production. The aim of this work was to investigate biogas residue as a potential feedstock, by preparing biochar at a broad pyrolysis temperature range of 400–900 °C. The properties required for phosphorus recovery and soil amendment application were evaluated. Biogas residue collected from an urban food waste treatment plant was pyrolyzed in a laboratory scale reactor. It was found that by increasing the pyrolysis temperature, the yield of biochar decreased and the pH, electrical conductivity and Brunauer–Emmett–Teller surface area increased. The amount of phosphorus adsorbed onto the biogas residue-derived biochar (BRB) at 900 °C was larger than that of other kinds of biochar. The kinetics of phosphorus (P) adsorption on BRB could be described by the pseudo-second-order equation. The pot experiments showed that the resulting biochar is beneficial for the growth of cabbage. Overall, turning solid residue from the anaerobic digestion of food waste for biogas production into biochar shows good prospects as a means of solving the disposal problem, while creating new markets for food waste biogas residue.

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Quality Assurance System for Collection and Check of Radioactive Waste

Volume 3: Hazardous Waste; Engineered/Geological Barriers in Disposal Systems; L/ILW; Radioactive Waste From Research/Industries; Spent Fuel/HLW Disposal; Public Involvement; Remediation of Uranium Mining/Milling; LL/ILW; Clearance/Exemption Levels; Mgmt. of Fissile Material; HLW; Dismantling; Reversible/Irreversible Disposal; Waste Avoidance/Minimization; Decontamination; Liquid Waste; Radioactive Waste Processing; Transport of Spent Fuel/HLW; Solid HLW Confinement; QA/QC ◽

10.1115/icem2001-1333 ◽

2001 ◽

Author(s):

Gheorghe C. Dogaru

Keyword(s):

Quality Assurance ◽

Radioactive Waste ◽

Waste Treatment ◽

Treatment Plant ◽

Quality Assurance System ◽

Assurance System ◽

Waste Treatment Plant ◽

Radioactive Sources ◽

Radioactive Waste Treatment

Abstract A component of the quality assurance system applied at Radioactive Waste Treatment Plant refers to the collection, identification and characterisation of radioactive waste including spent sealed radioactive sources before their treatment and conditioning. One of the most important challenges to be solved is to apply this procedure to the collection and characterisation of the “historical” radioactive waste for which is not recorded and no analyse bulletin for characterisation and identification is existing. The procedure “Collection and characterization of radioactive waste” applied at the Radioactive Waste Treatment Plant is based on regulatory requirements concerning collection, characterization and identification of all radioactive materials including sealed spent radioactive sources.

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