EFFECT OF DOSING STRAW AND FLY ASH ON ENRICHMENT OF HEAVY METALS IN RYEGRASS IN COAL GANGUE CONTAMINATED SOIL

ZHAO Manman; XU Xiuyue; WANG Ningning; CHEN Hao; ZHAO Ruirui; CHEN Guanglong; CHEN Fan

doi:10.13205/j.hjgc.202312027

Volume 41 Issue 12

Dec. 2023

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ZHAO Manman, XU Xiuyue, WANG Ningning, CHEN Hao, ZHAO Ruirui, CHEN Guanglong, CHEN Fan. EFFECT OF DOSING STRAW AND FLY ASH ON ENRICHMENT OF HEAVY METALS IN RYEGRASS IN COAL GANGUE CONTAMINATED SOIL[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(12): 221-226,287. doi: 10.13205/j.hjgc.202312027

Citation:

ZHAO Manman, XU Xiuyue, WANG Ningning, CHEN Hao, ZHAO Ruirui, CHEN Guanglong, CHEN Fan. EFFECT OF DOSING STRAW AND FLY ASH ON ENRICHMENT OF HEAVY METALS IN RYEGRASS IN COAL GANGUE CONTAMINATED SOIL[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(12): 221-226,287. doi: 10.13205/j.hjgc.202312027

Citation:

ZHAO Manman, XU Xiuyue, WANG Ningning, CHEN Hao, ZHAO Ruirui, CHEN Guanglong, CHEN Fan. EFFECT OF DOSING STRAW AND FLY ASH ON ENRICHMENT OF HEAVY METALS IN RYEGRASS IN COAL GANGUE CONTAMINATED SOIL[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(12): 221-226,287. doi: 10.13205/j.hjgc.202312027

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EFFECT OF DOSING STRAW AND FLY ASH ON ENRICHMENT OF HEAVY METALS IN RYEGRASS IN COAL GANGUE CONTAMINATED SOIL

doi: 10.13205/j.hjgc.202312027

1. School of Geography and Resources, Guizhou Education University, Guiyang 550018, China;
2. Guizhou Provincial Key Laboratory of Geographic State Monitoring of Watershed, Guizhou Education University, Guiyang 550018, China;
3. Chongqing Key Laboratory of Exogenous Minerals and Mine Environment, Chongqing 401120, China

Received Date: 2023-06-13
Available Online: 2024-03-08

Abstract

Abstract

To explore the effect of straw and fly ash on the accumulation of heavy metals in ryegrass in coal gangue contaminated soil, a pot experiment was conducted to add fly ash (CS1), straw (CS2), and the mixture of fly ash and straw (CS3) into the coal gangue contaminated soil, and the blank was set as the control group. The contents of heavy metal elements Fe, Mn, Cu, Zn, Pb and Cd in ryegrass in each treatment group were analyzed, and the ability of ryegrass to accumulate and migrate heavy metals was evaluated by plant enrichment coefficient and transport coefficient. The results showed that the enrichment ability of ryegrass to heavy metals in each treatment group was quite different. In the single remediation system, fly ash was conducive to the enrichment of Fe and Cd in the aboveground and lower parts of ryegrass. Straw had more potential to promote the absorption and enrichment of Fe, Mn, and Pb in the aboveground and lower parts of ryegrass. Both fly ash and straw inhibited the absorption and enrichment of Zn in the aboveground and lower parts of ryegrass. In the mixed treatment of fly ash and straw, the enrichment ability of Fe and Mn in the upper and lower parts of ryegrass was the best. The enrichment ability of ryegrass roots to Fe, Mn, Cu, Zn, Pb and Cd was greater than that of ryegrass aboveground parts. In summary, fly ash, straw, and their mixture had different degrees of promoting effect on absorption and enrichment of Fe, Mn, Cu, Pb, and Cd in the aboveground and lower parts of ryegrass. It has greater repairing potential for Fe and Mn.
- ryegrass,
- heavy metals,
- fly ash,
- straw

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References(34)

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