Characterization of Landfill Leachates and Sediments in Major Cities of Indochina Peninsular Countries—Heavy Metal Partitioning in Municipal Solid Waste Leachate

Xaypanya, Phetyasone; Takemura, Jiro; Chiemchaisri, Chart; Hul, Seingheng; Tanchuling, Maria Antonia

doi:10.3390/environments5060065

Cited by 42 publications

(17 citation statements)

References 45 publications

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“…Recent research points to a higher content of heavy metals in the suspensions. Moreover, there were no significant seasonal changes in the concentration of heavy metal ions in suspended solids and sediment samples [2].…”

Section: Introductionmentioning

confidence: 85%

Potassium Ferrate (VI) as the Multifunctional Agent in the Treatment of Landfill Leachate

Thomas¹,

Kozik

Barbusiński

et al. 2020

Materials

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Possible use of potassium ferrate (VI) (K2FeO4) for the treatment of landfill leachate (pH = 8.9, Chemical Oxygen Demand (COD) 770 mg O2/L, Total Organic Carbon (TOC) 230 mg/L, Total Nitrogen (Total N) 120 mg/L, Total Phosphorus (Total P) 12 mg/L, Total Coli Count (TCC) 6.8 log CFU/mL (Colony-Forming Unit/mL), Most Probable Number (MPN) of fecal enterococci 4.0 log/100 mL, Total Proteolytic Count (TPC) 4.4 log CFU/mL) to remove COD was investigated. Central Composite Design (CCD) and Response Surface Methodology (RSM) were applied for modelling and optimizing the purification process. Conformity of experimental and predicted data (R2 = 0.8477, Radj2 = 0.7462) were verified using Analysis of Variance (ANOVA). Application of K2FeO4 using CCD/RSM allowed to decrease COD, TOC, Total N, Total P, TCC, MPN of fecal enterococci and TPC by 76.2%, 82.6%, 68.3%, 91.6%, 99.0%, 95.8% and 99.3%, respectively, by using K2FeO4 0.390 g/L, at pH = 2.3 within 25 min. Application of equivalent amount of iron (as FeSO4 × 7H2O and FeCl3 × 6H2O) under the same conditions allowed to diminish COD, TOC, Total N, Total P, TCC, MPN of fecal enterococci and TPC only by 38.1%, 37.0%, 20.8%, 95.8%, 94.4%, 58.2%, 90.8% and 41.6%, 45.7%, 29.2%, 95.8%, 92.1%, 58.2%, 90.0%, respectively. Thus, K2FeO4 could be applied as an environmentally friendly reagent for landfill leachate treatment.

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Section: Introductionmentioning

confidence: 85%

Potassium Ferrate (VI) as the Multifunctional Agent in the Treatment of Landfill Leachate

Thomas¹,

Kozik

Barbusiński

et al. 2020

Materials

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“…The investigation of the potential risks associated with the ingestion of Cr is widely reported in the literature [20][21][22][23][24]. It can be assessed or estimated using the bioaccumulation/bioconcentration factor (BF/BCF), translocation factor (TF), daily intake of chromium (DIC), hazard quotient (HQ) and hazard index (HI) which were calculated using Equations (3)- (7).…”

Section: Determination Of Cr(vi) In Soils and Plantsmentioning

confidence: 99%

The Potential Health Risk Associated with Edible Vegetables Grown on Cr(VI) Polluted Soils

Ongon’g

Edokpayi

Msagati

et al. 2020

IJERPH

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This study reports on the assessment of the growth potential of five edible vegetables, which were grown in Cr(VI) spiked soils. The vegetable plants that were used in this study were Vigna angularis, Cicer arietinum, Spinacia oleracea, Amaranthus dubius Thell and Phaseolus vulgaris. Dried ground samples from roots, stems and leaves were analysed for various oxidation states of Cr. The daily intake of chromium, hazard quotient (HQ) and hazard index (HI) methods were employed to assess the potential human health risks posed by these Cr oxidation states through vegetable consumption. The results showed that Vigna angularis was the only vegetable that germinated in highly concentrated Cr(VI) in the simulated soil (456 mg/kg). The highest total chromium (ChT) bioaccumulated in the roots was found in Phaseolus vulgaris at 0.8. The highest ChT translocation factor in the stem was that of Cicer arietinum and Vigna angularis at 0.30. The same plants translocated the highest ChT to the leaf at 0.7. A child or an adult consuming such contaminated Cicer arietinum vegetables were likely to take in between 508 and 785 mg/day of ChT, which are above the World Health Organisation guidelines of 220 and 340 mg/day, respectively. The highest HQ was found in Cicer arietinum at 8.7 and 13.4 for adults and children, respectively. The same species of plants also had high HI at 17.4 and 27.2 for adults and children, respectively. This indicated that consumers of the edible vegetables grown in Cr(VI) rich soils may be exposed to health risks, and the children were more likely to be vulnerable to these adverse effects than the adults.

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“…Xaypanya et al [10] assessed landfill leachate and sediment qualities in three major landfills that can be found in three countries of the Indochina peninsular region. The specific emphasis of the research was on the five, toxic trace elements As, Pb, Cd, Cr and Zn.…”

Section: Highlightsmentioning

confidence: 99%

Preface: Special Issue on Environmental Toxicology of Trace Metals

Cheloni

2018

Environments

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Characterization of Landfill Leachates and Sediments in Major Cities of Indochina Peninsular Countries—Heavy Metal Partitioning in Municipal Solid Waste Leachate

Cited by 42 publications

References 45 publications

Potassium Ferrate (VI) as the Multifunctional Agent in the Treatment of Landfill Leachate

Potassium Ferrate (VI) as the Multifunctional Agent in the Treatment of Landfill Leachate

The Potential Health Risk Associated with Edible Vegetables Grown on Cr(VI) Polluted Soils

Preface: Special Issue on Environmental Toxicology of Trace Metals

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