Evaluation and remediation of organics, nutrients and heavy metals in landfill leachate – a case study in Beijing

Zhang, Chunhui; Wang, Kai; Tan, Shuhui; Niu, Xiameng; Su, Peidong

doi:10.1080/02757540.2013.841897

Cited by 15 publications

(7 citation statements)

References 17 publications

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“…The results show that up to 2% FeCl 3 had a better effect on adsorption and can be used as an adsorption agent from the soil. Earlier researchers have also used Fe compound to adsorb or immobilize the various metals from the soil (Zhang et al 2013).…”

Section: Arsenic Transformationmentioning

confidence: 99%

“…In addition, we carried out a leaching experiment in a glass column of this treated soil to measure the solubility of the As from the soil, because in nature after treatment, soil kept in the natural condition may be in contact with water including rain water. Sometime researchers observed that leaching of heavy metals including As, Fe, Pb, and Cd from the contaminated soil, which can be harmful in even small amounts to the organisms and can alter the biodiversity (Zhang et al 2013). Therefore, a standard glass column was taken and filled with the treated soil and normal tap water was passed in the column and water was collected at different time intervals 1, 2, 4, 8, 12, and 24 h and further collected water analyzed for As.…”

Section: Arsenic Transformationmentioning

confidence: 99%

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Bio-transformation and stabilization of arsenic (As) in contaminated soil using arsenic oxidizing bacteria and FeCl3 amendment

2017

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A combination of biological and chemical methods was applied in the present study to evaluate the removal of arsenic (As) from contaminated soil. The treatment involved As-oxidizing microbes aimed of transforming the more toxic As (III) to less toxic As (V) in the soil. FeCl 3 was added at three different concentrations (1, 2, and 3%) to stabilize the As (V). Leaching of the treated soil was investigated by making a soil column and passing tap water through it to determine solubility. Experimental results indicated that the bacterial activity had a pronounced positive effect on the transformation of As, and decreased the soluble exchangeable fraction from 50 to 0.7 mg/kg as compared to control and from 50 to 44 mg/kg after 7 days of treatment. FeCl 3 also played an indispensable role in the adsorption/stabilization of As in the soil; 1 and 2% FeCl 3 strongly influenced the adsorption of As (V). The soil leachate contained negligible amount of As and trace metals, which indicates that combining an efficient microbe with a chemical treatment is very effective route for the removal and stabilization of As from contaminated soil in the environment.

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Section: Arsenic Transformationmentioning

confidence: 99%

Section: Arsenic Transformationmentioning

confidence: 99%

Bio-transformation and stabilization of arsenic (As) in contaminated soil using arsenic oxidizing bacteria and FeCl3 amendment

2017

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“…It is classified as a top priority toxicant by both United States Environmental Protection Agency (Niazi et al, 2001) and China National Environmental Monitoring Center (Niazi et al, 2001). Landfill sites are used to deposit Municipal Solid Waste (MSW) and also plastic items containing dibutyl phthalate (DBP) and other phthalate esters (Zhang et al, 2013). There is always possibility to find the PAEs degrading bacteria in landfills.…”

Section: Introductionmentioning

confidence: 99%

Efficient degradation of dibutyl phthalate and utilization of Phthalic Acid Esters (PAEs) by Acinetobacter species isolated from MSW (Municipal Solid Waste) leachate

2016

Global NEST Journal

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Bacteria from the genus Acinetobacter are opportunistic pathogens and cause harm to humans. In this study a new bacterial strain designated as Acinetobacter sp. 33F was isolated from municipal solid waste (MSW) leachate. This bacterium is useful as it degrades and utilizes dibutyl phthalate (DBP) as sole carbon source. Acinetobacter sp. 33F degraded 82.45% of the initial 2000 mg l -1 of DBP in minimal salt medium. It degraded 54.36 % of initial DBP in samples collected from phthalate esters contaminated site. Monod model explained the growth kinetics of Acinetobacter sp. 33F. The calculated values of µmax, Ks and yield were 0.01616 h -1 , 382.92 mg l -1 and 0.43 respectively. Stoichiometry of DBP degradation suggested that 43 g of microbial biomass was produced for every 100 g DBP consumed. Acinetobacter sp. 33F also grows on Di-Ethyl Phthalate (DEP), Di-Octyl Phthalate (DOP), Benzyl Butyl Phthalate (BBP), Mono-Butyl Phthalate (MBP) and Di-isodecyl Phthalate (DIDP) as sole carbon source. Five genes responsible for phthalate esters (PAEs) degradation were amplified from the genome of Acinetobacter sp. 33F. Acinetobacter sp. 33F can be considered as an important tool for remediation of sites contaminated with phthalate esters.

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“…Email: noriah@utm.my the pollution caused by industrial waste [10,11] and evaluating different methods to minimise the consequent ecological hazards. [12] Assessment and monitoring of the pollutants are of significant importance. Analytical methods that avoid chemical analysis and are free from toxic chemical residues are preferable.…”

Section: Introductionmentioning

confidence: 99%

Determination of environmental safety level with laser-induced breakdown spectroscopy technique

Badday

Bidin

Haider

et al. 2015

Chemistry and Ecology

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This paper reports the quantitative estimation of heavy metals contamination in the soil, around the power station, by laser-induced breakdown spectroscopy (LIBS). Soil samples were collected from various distances (200-1000 m) and depths (10-50 cm) in the vicinity of the Iskandar power station in Johor, Malaysia. Samples were dried and pelletised prior to excitation. A Q-switched Nd:YAG laser was employed to ablate the sample and MayaPro spectrometer (Ocean Optics) for recording the emission spectrum of laser-induced plasma. Pb, Fe, Ni and Cu concentrations were estimated in the polluted soil with repeatability rate of above 96%. Quantitative results of LIBS were validated by flame atomic absorption spectroscopy (FAAS) and were found in good agreement. The concentration of the detected heavy metal elements was found within the safety limits set by Department of Environment (DOE) of Malaysia and the European standards.

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Evaluation and remediation of organics, nutrients and heavy metals in landfill leachate – a case study in Beijing

Cited by 15 publications

References 17 publications

Bio-transformation and stabilization of arsenic (As) in contaminated soil using arsenic oxidizing bacteria and FeCl3 amendment

Bio-transformation and stabilization of arsenic (As) in contaminated soil using arsenic oxidizing bacteria and FeCl3 amendment

Efficient degradation of dibutyl phthalate and utilization of Phthalic Acid Esters (PAEs) by Acinetobacter species isolated from MSW (Municipal Solid Waste) leachate

Determination of environmental safety level with laser-induced breakdown spectroscopy technique

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