Municipal solid waste leachate impact on metabolic activity of wheat (Triticum aestivum L.) seedlings

Awasthi, Abhishek Kumar; Pandey, Akhilesh Kumar; Khan, Jamaluddin

doi:10.1007/s11356-017-9412-8

Cited by 8 publications

(5 citation statements)

References 21 publications

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“…Despite an excellent landfill site selection and monitoring network architecture, the effects of waste leachate on the environment, particularly on groundwater quality, have been repeatedly recognized by several studies. Even in the most excellent liner, the leachate intrusion into groundwater is a severe problem because of normal degradation to the leachate collecting systems [21,31]. Furthermore, even when the leachate is not substantially polluting, the pH of groundwater may alter as a result of the leachate intrusion [32], resulting in metal dissolution from the subsurface matrix [33] into the groundwater.…”

Section: Leachate Toxicity and Environmental Impactsmentioning

confidence: 99%

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A Recent Progress in the Leachate Pretreatment Methods Coupled with Anaerobic Digestion for Enhanced Biogas Production: Feasibility, Trends, and Techno-Economic Evaluation

Anjum

Anees

Qadeer

et al. 2023

IJMS

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Landfill leachate (LFL) treatment is a severe challenge due to its highly viscous nature and various complex pollutants. Leachate comprises various toxic pollutants, including inorganic macro/nano components, xenobiotics, dissolved organic matter, heavy metals, and microorganisms responsible for severe environmental pollution. Various treatment procedures are available to achieve better effluent quality levels; however, most of these treatments are nondestructive, so pollutants are merely transported from one phase to another, resulting in secondary contamination. Anaerobic digestion is a promising bioconversion technology for treating leachate while producing renewable, cleaner energy. Because of its high toxicity and low biodegradability, biological approaches necessitate employing other techniques to complement and support the primary process. In this regard, pretreatment technologies have recently attracted researchers’ interest in addressing leachate treatment concerns through anaerobic digestion. This review summarizes various LFL pretreatment methods, such as electrochemical, ultrasonic, alkaline, coagulation, nanofiltration, air stripping, adsorption, and photocatalysis, before the anaerobic digestion of leachate. The pretreatment could assist in converting biogas (carbon dioxide to methane) and residual volatile fatty acids to valuable chemicals and fuels and even straight to power generation. However, the selection of pretreatment is a vital step. The techno-economic analysis also suggested the high economic feasibility of integrated-anaerobic digestion. Therefore, with the incorporation of pretreatment and anaerobic digestion, the process could have high economic viability attributed to bioenergy production and cost savings through sustainable leachate management options.

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Section: Leachate Toxicity and Environmental Impactsmentioning

confidence: 99%

“…The contaminants found in wheat seeds could significantly impact plant growth, having reduced growth due to the application of MSW leachate. These physiological reactions might differ depending on the amount of MSW leachate present [31].…”

Section: Leachate Toxicity and Environmental Impactsmentioning

confidence: 99%

A Recent Progress in the Leachate Pretreatment Methods Coupled with Anaerobic Digestion for Enhanced Biogas Production: Feasibility, Trends, and Techno-Economic Evaluation

Anjum

Anees

Qadeer

et al. 2023

IJMS

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“…The assessment of phytotoxicity is based on the GI test, plant growth, leaf size and color, chlorophyll content, biomass, and the accumulation of pollutants (Gyuricza et al 2010;Awasthi et al 2017). The phytotoxicity assessment of the tested wastes based on the condition of the L. sativum L. (cotyledons, biomass, heavy metal accumulation) and the GI test is presented below.…”

Section: Phytotoxicity Testsmentioning

confidence: 99%

The Use of the Direct Test on Substrate in the Assessment of Phytotoxicity of Foundry Waste

Bożym

2021

Preprint

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The article presents the results of phytotoxicity tests on foundry dust and landfilled waste. Currently, all of this waste is being reused. The results supplement the previous study on the phytotoxicity of waste leachate. The research has focused on phytotoxicity tests performed directly on the waste. Watercress (Lepidium sativum L.) was used as the test plant. The germination test (GI) and the accumulation test were used to assess phytotoxicity. The results show that the dust from electric furnaces, classified as hazardous waste, was the most phytotoxic. Most of the dust samples inhibited germination and root growth. A possible cause of this phytotoxicity was the high content of heavy metals and low pH. The phytotoxicity were different from previous studies on waste leachate. A lower phytotoxicity effect was found for those waste leachates. The differences could have been caused by the higher concentration of toxic substances available to plants in the direct test. Moreover, the direct contact of sprouts and roots of L. sativum could have contributed to the higher phytotoxicity of the wastes than the leachate. Therefore, it seems appropriate to use both tests simultaneously to assess the phytotoxicity of waste.

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“…The results of both tests are used to calculate the germination index (GI) (Fuentes et al 2004;Mitelut and Popa 2011). In addition to the GI, the plant growth, size and color of leaves, chlorophyll content or biomass and accumulation of pollutants are also examined (Gyuricza et al 2010;Awasthi et al 2017). Many factors should be considered in the assessment of phytotoxicity.…”

Section: Introductionmentioning

confidence: 99%

“…The solution to this problem is covering the waste with a paper filter, wetting it with water, whereby the next step is sowing seeds (Czop et al 2016). Phytotoxic tests may be useful in assessing hazardous waste with high heavy metal pollution, e.g., metallurgical slags or other waste, like sewage sludge, fly ashes and their mixtures (Su and Wong 2002;Fuentes et al 2006;Ramıirez et al 2008;Phoungthong et al 2016;Awasthi et al 2017;Sharma et al 2018). Some heavy metals are micronutrient, such as Zn, Cu, Cr, Ni, Mo and Co.…”

Section: Introductionmentioning

confidence: 99%

Leachate and contact test with Lepidium sativum L. to assess the phytotoxicity of waste

Bożym

Król

Mizerna

2020

Int. J. Environ. Sci. Technol.

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The study evaluated the use of Lepidium sativum L. to assess the phytotoxicity of three types of waste such as hazardous waste (slags from zinc to copper smelters) and nonhazardous waste (mineral–organic composite). Previous studies evaluated heavy metal leaching and the environmental impact of the tested waste. The purpose of phytotoxicity studies was to increase knowledge about this waste. Two types of tests were used to assess the phytotoxicity of wastes: germination index and accumulation test. Both tests were carried out for leachate (leachate test) and waste (contact test). The results of both tests were compared to assess the phytotoxic effects of tested waste. Phytotoxicity tests have shown that the mineral–organic composite leachate was stimulated plant growth, copper smelter slag leachate was characterized by no phytotoxicity and zinc slag leachate inhibited the growth of plants. In contrast, contact test showed inhibitory effects from all tested waste. Wherefore, the contact test was indicated as more sensitive in the assessment of phytotoxicity. However, this is not a clear assessment, because the germination index values for both tests were a result of differences of root length for both control samples (deionized water and sand). The study confirmed the usefulness of L. sativum for the assessment of phytotoxicity of various types of waste. Additionally, it was found that L. sativum was resistant to high concentrations of heavy metals in the leachate, without causing any negative physiological effects.

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Municipal solid waste leachate impact on metabolic activity of wheat (Triticum aestivum L.) seedlings

Cited by 8 publications

References 21 publications

A Recent Progress in the Leachate Pretreatment Methods Coupled with Anaerobic Digestion for Enhanced Biogas Production: Feasibility, Trends, and Techno-Economic Evaluation

A Recent Progress in the Leachate Pretreatment Methods Coupled with Anaerobic Digestion for Enhanced Biogas Production: Feasibility, Trends, and Techno-Economic Evaluation

The Use of the Direct Test on Substrate in the Assessment of Phytotoxicity of Foundry Waste

Leachate and contact test with Lepidium sativum L. to assess the phytotoxicity of waste

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