The Characteristics of the Biochar with the Synthetic Food Waste and Wood Waste for Soil Contaminated with Heavy Metals

Baek, Ye-Seul; Lee, Jun Young; Park, Seong-Kyu; Bae, Sunyoung

doi:10.7857/jsge.2014.19.1.001

Cited by 5 publications

(4 citation statements)

References 26 publications

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“…By this process, we were able to observe the precipitation reaction of AgNO 3 and NaCl and measured their absorbance, as it can be observed in Fig. 1.…”

Section: ) Changes In the Concentrations Of Soil Bacteria And Chlorimentioning

confidence: 82%

“…Although such methods are not widely implemented in our society and regardless of how much food waste char is being produced, food waste char is known to have some key positive influences. One research suggests that it can actually remove heavy metals from the soil-the food waste char that included waste wood effectively eliminated lead, but not zinc and nickel [3].…”

Section: Introductionmentioning

confidence: 99%

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The Dechlorination Reaction of Food Waste and Growth Changes of Lettuce through the Utilization of Soil Bacteria

Lee¹,

Chang²

2016

IJESD

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Abstract-This research was conducted to transform food waste into 'char', which would lead to improving soil quality, preventing acidification and serving as a habitat for numerous microorganisms. The injection of soil bacteria will reduce damages caused by NaCl within disposed food waste.Changes in soil bacteria led by variations in the NaCl concentration were investigated, and by treating the NaCl solution on lettuce seeds with different amounts of soil bacteria, changes in the chlorophyll of lettuce were identified. Finally, the effects of producing char with food waste that includes soil bacteria and adding soil bacteria after producing the char were compared. The analysis was done by observing the resulting lettuce growths.The result demonstrated that some soil bacteria cause dechlorination, and the small amount of decomposed chloride ions facilitate plant growth. The optimal method of utilizing food waste char is to produce it first and add soil bacteria on it afterwards.

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“…By this process, we were able to observe the precipitation reaction of AgNO 3 and NaCl and measured their absorbance, as it can be observed in Fig. 1.…”

Section: ) Changes In the Concentrations Of Soil Bacteria And Chlorimentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

The Dechlorination Reaction of Food Waste and Growth Changes of Lettuce through the Utilization of Soil Bacteria

Lee¹,

Chang²

2016

IJESD

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“…Fast reaction time [52]. Gasification/ Flash carbonization Prepared biochar has poor chemical stability when applied under acidic, alkaline, or high-temperature conditions [57,58].…”

Section: Direct Pyrolysismentioning

confidence: 99%

Applications of Biochar and Modified Biochar in Heavy Metal Contaminated Soil: A Descriptive Review

Liang

et al. 2021

Sustainability

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Given that the problem of contaminated soil continues to grow, the development of effective control and remediation measures has become imperative, especially for heavy-metal-contaminated soil. Biochar and modified biochar are eco-friendly and cost-effective remediation materials that are widely used in the remediation of contaminated soil. This review provides an overview of the different raw materials used in the preparation of biochar as well as the modification of biochar using various synthesis methods, highlighting their differences and providing recommendations for biochar and modified biochar as applied toward ameliorating pollution in soil contaminated by heavy metals. We also explore the effects of the physicochemical properties of raw materials, pyrolysis temperature, additives, and modification methods on the properties of the resulting biochar and modified biochar, and systematically present the types of soil and operating factors for repair. Moreover, the mechanisms involved in remediation of heavy-metal-contaminated soil by biochar and modified biochar are outlined in detail, and include adsorption, complexation, precipitation, ion exchange, and electrostatic attractions. Finally, the corresponding monitoring technologies after remediation are illustrated. Future directions for studies on biochar and modified biochar in the remediation of contaminated soil are also proposed to support the development of green environmental protection materials, simple preparation methods, and effective follow-up monitoring techniques.

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“…이의 기작을 바탕으로 실제 현장에서는 주로 석회석(limestone)과 제철공정의 부산물인 제강슬래 그(steelmaking slag)가 안정화제로 사용되고 있다. 아울러 최근에는 바이오차(biochar)를 안정화제로 하는 연구가 국 내외 활발히 진행되고 있다 (Abdelhafez et al, 2014;Baek et al, 2014;Beesley et al, 2014;Fellet et al, 2011;Kim et al, 2013). Table 3.…”

Section: 국내에서도 알칼리 기반의 물질이나 철산화물 등 다수 의 안정화제를 통해 비소(As) 및 중금속과 같은 무기원소unclassified

Stabilization of Agricultural Soil Contaminated by Arsenic and Heavy Metals using Biochar derived from Buffalo Weed

Koh¹,

Kim²,

Kim³

et al. 2016

Journal of Soil and Groundwater Environment

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Biochar, which has high alkalinity, has widely studied for amendment of soil that contaminated with heavy metals. The aim of this study is assessment of amendment for arsenic and heavy metals contaminated acidic agricultural soil using biochar that derived from buffalo weed (A. trifida L. var. trifida). Pot experiments were carried out including analysis of soil solution, contaminants fractionation, soil chemical properties and plant (lettuce) uptake rate. Arsenic and heavy metals concentrations in soil solution showed relatively low in biochar added experiments when compared to the control. In the heavy metals fractionation in soil showed decrease of exchangeable fraction and increase of carbonates fraction; however, arsenic fractionations showed constant. Soil chemical properties indicated that biochar could induce recovery of soil quality for plant growth in terms of soil alkalinity. However, phosphate concentration in biochar added soil decreased due to Ca-P precipitation by exchangeable calcium from biochar. Arsenic and heavy metals uptake rate of plant in the amended experiment decreased to 50% when compared to the control. Therefore biochar derived from buffalo weed can be used as amendment material for agricultural soil contaminated with arsenic and heavy metals. Precipitation of As-Ca and metal-carbonates are major mechanisms for soil amendment using char.

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The Characteristics of the Biochar with the Synthetic Food Waste and Wood Waste for Soil Contaminated with Heavy Metals

Cited by 5 publications

References 26 publications

The Dechlorination Reaction of Food Waste and Growth Changes of Lettuce through the Utilization of Soil Bacteria

The Dechlorination Reaction of Food Waste and Growth Changes of Lettuce through the Utilization of Soil Bacteria

Applications of Biochar and Modified Biochar in Heavy Metal Contaminated Soil: A Descriptive Review

Stabilization of Agricultural Soil Contaminated by Arsenic and Heavy Metals using Biochar derived from Buffalo Weed

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