Experimental study on removing heavy metals from the municipal solid waste incineration fly ash with the modified electrokinetic remediation device

Ji, Hong; Huang, Weiqiu; Zhang, Xing; Zuo, Jiaqi; Wang, Zhuang; Yang, Ke

doi:10.1038/s41598-019-43844-w

Cited by 21 publications

(5 citation statements)

References 47 publications

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“…Can be described by loose structure and rough surface. According to [14] based on the results of XRF monitoring it was explained that fly ash consists of O, Ca, Cl, Na, K, Si, S and other elements. Similar to coal ash in general, fly ash is the result of a high temperature combustion process, so the compounds contained in this fly ash are oxide compounds or silicon dioxide as the main component.…”

Section: Characterization Of Fly Ash and Bottom Ashmentioning

confidence: 99%

The Use of Fly Ash and Bottom Ash to Reduce COD, TSS, and Color in Textile Industry Wastewater Effluent

Ayuningsih,

Yuniarto,

Zuhri

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The textile industry wastewater effluent contains some levels of COD, TSS, and color, it must be reprocessed as a tertiary treatment using the filtration method. The goal of this research was to examine the ability of fly ash and bottom ash as filtration media to reduce the pollutant / organic load of COD, TSS, and color in textile industry wastewater effluent. The slow sand filter method was used in this study, and the filter media was derived from coal combustion waste. The variation used in this study is a variation of filter media (fly ash and bottom ash), with fly ash diameters of 0.11 and 0.35 mm, bottom ash diameters of 0.85 - 1.50 mm, and media thickness of 1.50 - 2.00 mm (10 cm and 20 cm). The study’s findings demonstrated that using bottom ash and fly ash media in the filtration process with a slow sand filter system could maximize the efficiency of reducing COD, TSS, and color levels in textile industry wastewater effluent. In fly ash media, it can reduce COD, TSS, and Color by 90.58%, 81.87%, and 100%. Meanwhile, Bottom Ash filter media has an average COD, TSS, and Color reduction of 87.80%, 81.87%, and of 100%.

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Section: Characterization Of Fly Ash and Bottom Ashmentioning

confidence: 99%

The Use of Fly Ash and Bottom Ash to Reduce COD, TSS, and Color in Textile Industry Wastewater Effluent

Ayuningsih,

Yuniarto,

Zuhri

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Many research has been done on ex-situ (encapsulation, electrokinetic extraction, surface capping, soil flushing, phytoremediation, chemical immobilization, and bioremediation) and in-situ (chemical immobilization) remediation methods for heavy metal-polluted soil (landfilling, solidification, soil washing, vitrification) [6]. These remediation methods concentrate on lowering the soil's highest or most bioavailable heavy metal concentration.…”

Section: Introductionmentioning

confidence: 99%

Treatment for heavy metal pollution: remediating soil environment by harnessing genetic and biochemical capabilities of bacteria

Han¹

2023

TNS

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Pollution is the introduction of harmful substances, also known as pollutants, into the environment. As all living things depend on clean air, water, and land for survival, pollution is a significant problem on a worldwide scale. In addition, heavy metals are the most essential and common contaminants in soil environments. These pollutants are widely diffused, harmful to human health, and persistent in soil environments. Owing to the circumstances locally and worldwide, pollution assessment and bacterial remediation techniques for polluted soil have gained substantial attention and become essential. Here, this review covers four bacterial processes involved in bacterial remediation technology, including heavy metal adsorption and adhesion, redox transformation of heavy metals, and the function of mycorrhizal fungi. Also, a case study of a detailed experiment on pollution treatment is presented. This research aims to eliminate heavy metal pollution by using bacterial remediation technology in order to save human beings and the environment since long-term exposure to heavy metals can cause lung cancer and bone fractures in humans, thus posing a significant security threat and hidden danger to human society.

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“…In this case, acidic electrolytes are usually added to enhance the removal efficiency. Ion exchange membrane (IEM) and electrode polarity exchange have also been adopted to prevent the spreading of OH − from the cathode compartment into the main soil matrix (Kim et al 2005;Ji et al 2019;Mao et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electrokinetic Remediation of Cadmium (Cd)-Contaminated Soil with Interval Power Breaking

et al. 2022

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This study compared electrokinetic (EK) remediation with and without interval power breaking in the removal of total and plant available cadmium (Cd) in the soil. Two laboratory experiments, i.e. EK remediation with interval power breaking (24–12 h power-on-off cycles) and conventional EK remediation (continuous power supply), with the same accumulated time (192 h) of power supply, were conducted to remove soil Cd. After the EK remediation with interval power breaking, the total Cd removal efficiency in the soil rose to 38%, in comparison to 28% after the conventional EK remediation. As for the plant available Cd, the removal efficiency was enhanced from 52 to 63%. Additionally, the electric current during the EK remediation and electric conductivity after the EK remediation were higher in the soil treated by interval power breaking, which indicated an enhanced desorption and/or migration of charged species. It further meant that the higher removal efficiency of soil Cd by interval power breaking could be related to the enhanced desorption and/or migration of Cd species. This study indicated that both conventional EK remediation and EK remediation with interval power breaking were effective methods to remove soil Cd but EK remediation with interval power breaking was more efficient.

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Experimental study on removing heavy metals from the municipal solid waste incineration fly ash with the modified electrokinetic remediation device

Cited by 21 publications

References 47 publications

The Use of Fly Ash and Bottom Ash to Reduce COD, TSS, and Color in Textile Industry Wastewater Effluent

The Use of Fly Ash and Bottom Ash to Reduce COD, TSS, and Color in Textile Industry Wastewater Effluent

Treatment for heavy metal pollution: remediating soil environment by harnessing genetic and biochemical capabilities of bacteria

Enhanced Electrokinetic Remediation of Cadmium (Cd)-Contaminated Soil with Interval Power Breaking

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