Utilization of municipal solid waste incineration (MSWI) fly ash in blended cement Part 2. Mechanical strength of mortars and environmental impact.

This second of two articles dealing with the utilization of MSWI fly ash in blended cement studies the effects of two variants of the stabilization process on the behavior of the treated fly ash (TFA) introduced into cement-based mortars. From a technological point of view, the modifications of the process are very efficient and eliminate the swelling produced by the introduction of MSWI fly ash in cement-based mortars. TFA has a significant activity in cement-based mortars and can also advantageously replace a part of the cement in cement-based material. From an environmental point of view, the results of traditional leaching tests on monolithic and crushed mortars highlight a poor stabilization of some harmful elements such as antimony and chromium. The use of a cement rich in ground granulated blast furnace slag (GGBFS) with a view to stabilizing the chromium is not efficient. Since neither adequate tests nor quality criteria exist to evaluate the pollutant potential of a waste with a view to reusing it, it is difficult to conclude on the environmental soundness of such a practice. Further experiments are necessary to investigate the environmental impact of TFA introduced in cement-based mortars depending on the reuse scenario.

[1]  J. Duchesne,et al.  Immobilization of chromium (VI) evaluated by binding isotherms for ground granulated blast furnace slag and ordinary Portland cement , 2005 .

[2]  J. E. Krzanowski,et al.  Heavy metal stabilization in municipal solid waste combustion bottom ash using soluble phosphate , 2000 .

[3]  P. Moszkowicz,et al.  Retention mechanisms in mortars of the trace metals contained in Portland cement clinkers , 2000 .

[4]  F. Lea.  The chemistry of cement and concrete , 1970 .

[5]  P. Shih,et al.  Replacement of raw mix in cement production by municipal solid waste incineration ash , 2003 .

[6]  P. Piantone,et al.  Monitoring the stabilization of municipal solid waste incineration fly ash by phosphation: mineralogical and balance approach. , 2003, Waste management.

[7]  J. Pera,et al.  Immobilization of Heavy Metals by Calcium Sulfoaluminate Cement , 2005 .

[8]  David L. Sedlak,et al.  REDUCTION OF HEXAVALENT CHROMIUM BY FERROUS IRON , 1997 .

[9]  B. Quénée,et al.  Behaviour of cement-treated MSWI bottom ash. , 2001, Waste management.

[10]  C. C. Chan,et al.  The behaviour of Al in MSW incinerator fly ash during thermal treatment. , 2000, Journal of hazardous materials.

[11]  Jean-Emmanuel Aubert,et al.  USE OF MUNICIPAL SOLID WASTE INCINERATION FLY ASH IN CONCRETE , 2004 .

[12]  Ange Nzihou,et al.  Calcium phosphate stabilization of fly ash with chloride extraction. , 2002, Waste management.

[13]  Shin-ichi Sakai,et al.  Evaluation of treatment of gas cleaning residues from MSWI with chemical agents , 2000 .

[14]  J. Pera,et al.  Use of incinerator bottom ash in concrete , 1997 .

[15]  T Sabbas,et al.  Management of municipal solid waste incineration residues. , 2003, Waste management.

[16]  J. Duchesne,et al.  EVALUATION OF THE DEGREE OF CR IONS IMMOBILIZATION BY DIFFERENT BINDERS , 2004 .

[17]  J. Potgieter,et al.  Determination of hexavalent chromium in South African cements and cement-related materials with electrothermal atomic absorption spectrometry , 2003 .

[18]  Luca Bertolini,et al.  MSWI ASHES AS MINERAL ADDITIONS IN CONCRETE , 2004 .

[19]  J. Aubert,et al.  Utilization of municipal solid waste incineration (MSWI) fly ash in blended cement Part 1: Processing and characterization of MSWI fly ash. , 2006, Journal of hazardous materials.

[20]  H. A. van der Sloot,et al.  Systematic Leaching Behaviour of Trace Elements from Construction Materials and Waste Materials. , 1991 .

[21]  T H Christensen,et al.  On-site treatment and landfilling of MSWI air pollution control residues. , 2000, Journal of hazardous materials.

[22]  Rene Derie,et al.  A new way to stabilize fly ash from municipal incinerators , 1996 .

[23]  S. Kang,et al.  Investigation of the stability of hardened slag paste for the stabilization/solidification of wastes containing heavy metal ions. , 2000, Journal of hazardous materials.

[24]  J. Aubert,et al.  Metallic aluminum in MSWI fly ash: quantification and influence on the properties of cement-based products. , 2004, Waste management.

[25]  Raffaele Cioffi,et al.  Potential application of ettringite generating systems for hazardous waste stabilization , 1996 .

[26]  F. Millero,et al.  Effect of metals on the reduction of chromium (VI) with hydrogen sulfide , 1998 .

[27]  Wu-Jang Huang,et al.  Synthesis and efficiency of a new chemical fixation agent for stabilizing MSWI fly ash. , 2004, Journal of hazardous materials.

[28]  Evert Mulder,et al.  Pre-treatment of MSWI fly ash for useful application , 1996 .

[29]  A Polettini,et al.  Optimization of the solidification/stabilization process of MSW fly ash in cementitious matrices. , 1999, Journal of hazardous materials.

[30]  T. Mangialardi,et al.  Disposal of MSWI fly ash through a combined washing-immobilisation process. , 2003, Journal of hazardous materials.

[31]  P. Hewlett,et al.  Lea's chemistry of cement and concrete , 2001 .

[32]  C. Collivignarelli,et al.  Reuse of municipal solid wastes incineration fly ashes in concrete mixtures. , 2002, Waste management.

[33]  D. Calabrese,et al.  Solidification and stabilization of cement paste containing fly ash from municipal solid waste , 1998 .

[34]  C. Vandecasteele,et al.  Immobilization of lead and zinc in scrubber residues from MSW combustion using soluble phosphates. , 2004, Waste management.

[35]  D. Dermatas,et al.  Evaluation of ettringite and hydrocalumite formation for heavy metal immobilization: literature review and experimental study. , 2006, Journal of hazardous materials.