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Method for regulating Pd forms and distributions of turf compost substrates by utilizing carbon nanomaterials

A technology of carbon nanomaterials and multi-walled carbon nanotubes, applied in the field of regulating the form and distribution of Pd in ​​lawn composting substrates

Inactive Publication Date: 2016-11-16
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through this technical research, on the one hand, it provides an effective method to solve the problem of Pd in ​​domestic waste composting, and on the other hand, it provides a theoretical basis for the use of carbon nanomaterials to repair Pd pollution in soil and sediments.

Method used

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  • Method for regulating Pd forms and distributions of turf compost substrates by utilizing carbon nanomaterials
  • Method for regulating Pd forms and distributions of turf compost substrates by utilizing carbon nanomaterials

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] (1) Development materials

[0074] The waste compost for the test was taken from Tianjin Xiaodian Domestic Waste Composting Treatment Plant and passed through a 2mm sieve for later use; the basic physical and chemical properties of Xiaodian Domestic Waste Compost are: organic matter content 22.00%, bulk density 0.79g / cm 3 , porosity 67.98%, saturated water content 0.67ml·g -1 , pH value 7.49, total nitrogen 0.57%, total phosphorus 0.34%, total potassium 1.21%, available phosphorus 0.078 g·kg -1 , C / N is 8.37, and the metal contents are: Ca 23.23 mg / kg, Fe 30.49 g / kg, Mg 5.78 g / kg, Cu341.34 mg / kg, Zn 677.33 mg / kg, Pb 216.98 mg / kg kg, Cd 5.02 mg / kg, Mn 437.88 mg / kg, Cr 702.6 mg / kg, Ni 41.82 mg / kg.

[0075] The grass species is selected from the common northern gramineous tall fescue ( Festuca arundinacea );

[0076] Graphene microflakes (Graphene) were purchased from Nanjing Jicang Nano Technology Co., Ltd., black, with an irregular lamella structure, microchip size: ...

Embodiment 2

[0085] The waste compost for testing was taken from Tianjin Xiaodian Household Waste Composting Plant and passed through a 2mm sieve for later use. Its basic physical and chemical properties are: organic matter content 22.00%, bulk density 0.79g / cm 3 , porosity 67.98%, saturated water content 0.67ml·g -1 , pH value 7.49, total nitrogen 0.57%, total phosphorus 0.34%, total potassium 1.21%, available phosphorus 0.078 g·kg -1 , C / N is 8.37, and the metal contents are: Ca 23.23 mg / kg, Fe 30.49 g / kg, Mg 5. 78 g / kg, Cu 341.34 mg / kg, Zn 677.33 mg / kg, Pb 216.98 mg / kg , Cd 5.02 mg / kg, Mn 437.88 mg / kg, Cr 702.6 mg / kg, Ni 41.82 mg / kg.

[0086] The grass species is selected from the common northern gramineous tall fescue ( Festuca arundinacea );

[0087] Graphene microflakes (Graphene) were purchased from Nanjing Jicang Nano Technology Co., Ltd., black, with irregular flake-like structure, microchip size: 20 μm; microchip thickness: 25 nm; specific surface area: 40m 2 / g; density: ab...

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Abstract

The invention discloses a method for regulating Pd forms and distributions of turf compost substrates by utilizing carbon nanomaterials. The method comprises following steps: planting festuca arundinacea into PVC tubes, adding carbon nanomaterials, putting 30g of river sands in a bottom layer of each PVC tube and putting 400g of domestic rubbish compost and 1% of carbon nanomaterials at the upper layer in order to form mixed substrates, solidifying them for 7 days in a stationary mode, watering each day during a solidifying period to keep soil water-holding capacity, planting festuca arundinacea after solidification at the sowing amount of 0.2g / cm<2>, and keeping indoor temperature of 18-25 DEG C and relative humidity of 35%-65% during cultivation and keeping illumination at 70% of the maximum water-holding capacity in order to ensure that plants have sufficient moistures, and measuring related indicators for the 70th day of clipping. The invention further discloses the method for regulating Pd forms and distributions of turf compost substrates by utilizing carbon nanomaterials which is applied to the conversion from heavy metal in substrates to non-usable biology.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to a method for regulating the form and distribution of lawn compost matrix Pd by using carbon nanomaterials. Background technique [0002] Household garbage mainly refers to the solid waste generated in residents' daily life and production. Global domestic waste will increase by 51% from 2005 to 2025. The average annual growth rate of domestic waste in my country exceeds 15%, and the accumulation of waste piles across the country has occupied more than 500 million square meters of land. By 2015, the annual domestic waste production in some of our cities is expected to exceed 10 million tons. The distribution of physical components of domestic waste is mainly inorganic matter such as glass, brick tiles, and cinder ash, and organic matter such as plants, fibers, plastics, and paper, among which compostable matter accounts for more than 30%. The chemical components ar...

Claims

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Application Information

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IPC IPC(8): A01G7/00A01G1/00A01G9/10G01N1/28
CPCA01G7/00A01G22/00A01G24/00G01N1/28
Inventor 多立安赵树兰卢云峰
Owner TIANJIN NORMAL UNIVERSITY
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