Small hazardous waste generators in developing countries: use of stabilization/solidification process as an economic tool for metal wastewater treatment and appropriate sludge disposal

Silva, Marcos A.R.; Mater, Luciana; Souza-Sierra, Maria M.; Corrêa, Albertina X.R.; Sperb, Rafael Medeiros; Radetski, Claudemir M.

doi:10.1016/j.jhazmat.2007.01.128

Cited by 42 publications

(16 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The digested domestic sludge may also be used as fertilizer in the area of alkali soil to grow trees and crops. Moreover, the sludge can also be used as a raw material to build concrete blocks by using of stabilization/solidification process [13]. More methods need to be exploited to cope with the aerobic digested sludge.…”

Section: Sludge Disposalmentioning

confidence: 99%

Impacts of Dissolved Oxygen and Initial Sludge Concentrations on Aerobic Stabilization of Sewage Sludge

Yang

Chen

et al. 2016

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

Impacts of dissolved oxygen (DO) and initial sludge concentrations on aerobic digestion for sewage sludge treatment were studied without adding alkalis. The MLVSS removal efficiencies were 50% and 47% in 20 days when DO concentrations were about 5.0 and 7.0 mg/L, respectively. Value of pH increased slightly in the first 6 days and then dropped constantly. The decrease of MLVSS appeared first quick back slow trend during the process and the OUR declination was similar. At the same DO level of 5.0 mg/L, the lower initial sludge concentration favored the efficiency of sludge stabilization. Both TN and TP of the supernatant were continually increasing and the ultimate concentrations were three to four times the initial concentrations. Results obtained from the present work could provide basic information for the aerobic sludge treatment process.

show abstract

Section: Sludge Disposalmentioning

confidence: 99%

Impacts of Dissolved Oxygen and Initial Sludge Concentrations on Aerobic Stabilization of Sewage Sludge

Yang

Chen

et al. 2016

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

show abstract

“…[24][25][26][27][28] According to the literature, several scientists have used geopolymers for the solidication of ES. [29][30][31][32][33] According to Asavapisit and Chotklang, the leaching of Pb, Cd and Cu was in safe limits during solidication through y ash-based geopolymers, but Cr had exceeded the critical limit when ES contents were >20%. 29 Moreover, the compressive strength was reduced as compared to the control samples.…”

Section: Introductionmentioning

confidence: 99%

Solidification of electroplating sludge with alkali-activated fly ash to prepare a non-burnt brick and its risk assessment

Xia

Muhammad

et al. 2020

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…During the last decade, the literature concerning the application of cementbased S/S for industrial sludge has spread into hazardous waste management. The following examples were listed: evaluation of the effectiveness of the stabilization and solidification of heavy metals from an electroplating industry sludge (Silva et al, 2007); the use of granulated fly ashes from power plants with 20% proportion of phosphogypsum waste from the production of phosphoric acid in the production of cement and their impact on the hardening of cement mortar. It has been shown that the cement with 20% of shredded granules meets the requirements of strength for class 32.5.…”

Section: Introductionmentioning

confidence: 99%

Evaluation the Solidification/Stabilization of Heavy Metals by Portland Cement

Al-Kindi¹

2019

J. Ecol. Eng.

View full text Add to dashboard Cite

Numerous solutions are used in the site to treat pollution, including remediation of heavy metals and hazardous wastes by solidification/stabilization (S/S) with cement as a binder. S/S is one of the most commonly methods used for treating inorganic wastes. The objective of this research was using unconfined compressive strength test, and EPA Toxicity Leaching Procedure TCLP method 1313, to test the effectiveness performance, and efficiency of the solidification / stabilization method for treatment of some heavy metals (Fe, Zn, Mn, Cr) contaminated sands using ordinary locally produced Portland Cement type A. In this study, three loads of pollution in three mix designs by contaminated sands were used. As a result of the unconfined compression test, it was observed that the value 1-15 MPa with OPC cement content 25% in the solidification / stabilization process was good enough to comply with the limited value set by the (US EPA). In addition, the concentration of zinc ions was 500 kg/mg, 1500 kg/mg, and 3000 kg/mg, which caused an increase in compressive strength in the early period of age, and a decrease at a later age. An increase in the iron ion concentration caused an increase in the compressive strength at a later age, the effective retention percentages were (97, 93.5, 96 and 92) for iron, zinc, manganese and chromium ions, respectively, which exceeded 3000 mg/kg initially. The high effectiveness in holding and retaining metals within the matrix of solidification / stabilization at the particle size above 9.5 mm was found as well. The samples (Mn and Cr) with the low amount of cement in the mix treatment were not able to retain the required TCLP regulatory limits value, and the initial extraction pH 4.9. However, the final pH 9.5 is alkanet and stabilization effects of the cement matrix.

show abstract

Small hazardous waste generators in developing countries: use of stabilization/solidification process as an economic tool for metal wastewater treatment and appropriate sludge disposal

Cited by 42 publications

References 8 publications

Impacts of Dissolved Oxygen and Initial Sludge Concentrations on Aerobic Stabilization of Sewage Sludge

Impacts of Dissolved Oxygen and Initial Sludge Concentrations on Aerobic Stabilization of Sewage Sludge

Solidification of electroplating sludge with alkali-activated fly ash to prepare a non-burnt brick and its risk assessment

Evaluation the Solidification/Stabilization of Heavy Metals by Portland Cement

Contact Info

Product

Resources

About