Preparation method of hydrothermal melon seed shell activated carbon

Abstract

The invention relates to a preparation method of hydrothermal melon seed shell activated carbon and belongs to the technical field of biochar adsorption materials. Melon seed shells are taken, subjected to ball milling and sieved, and ball-milled melon seed shell powder is obtained; the ball-milled melon seed shell powder is dried, and dried ball-milled powder is obtained; the dried ball-milled powder and hydrogen peroxide are put in a beaker and subjected to ultrasonic filtration, and modified ball-milled powder is obtained; the modified ball-milled powder is poured into a high-pressure reaction kettle, a potassium permanganate solution is added, the mixture is stirred, left to stand and cooled to the room temperature, and a modified mixed solution is obtained; the modified mixed solution is filtered, filter residues are poured into an acetone solution, taken out after being soaked and then washed with deionized water, and modified filter residues are obtained; macroporous adsorbent resin is taken and subjected to ball milling, macroporous adsorbent resin powder is obtained, the macroporous adsorbent resin powder and the modified filter residues are stirred in a stirrer, added to a blocky mold in a filling manner, put in a cooling chamber and then put in a freezing dryer to be freeze-dried, and a cured material is obtained; the cured material is put in a sintering furnace to be sintered, and the hydrothermal melon seed shell activated carbon is obtained.

Description

technical field

[0001] The invention relates to a method for preparing melon seed shell hydrothermal activated carbon, which belongs to the technical field of biochar adsorption materials. Background technique

[0002] With the extensive use of traditional non-renewable energy sources such as oil, natural gas, and coal, the reserves of activated carbon raw materials have decreased sharply, and at the same time, serious environmental pollution problems have occurred. Therefore, it is necessary to seek a green, low-cost, high-efficiency and sustainable new energy source to meet the growing demand for carbon materials. Biomass contains a large amount of carbon and is the preferred raw material for the preparation of various carbon functional materials. As a renewable energy source, biomass can not only reduce the consumption and dependence on traditional energy sources, but also effectively reduce environmental pollution, especially CO 2 Therefore, it is of great significance...

Examples

example 1

[0028] Take 100g of melon seed shells, wash them with deionized water, place them in a ball mill jar after natural drying, ball mill them at a speed of 300r / min for 40min, pass through an 80-mesh sieve to obtain ball milled melon seed shell powders; place the ball milled melon seed shell powders in an oven, Adjust the temperature to 85°C and take it out after 2 hours to obtain dry ball-milled powder; mix 100g of dry ball-milled powder and 200mL of 20% hydrogen peroxide in a beaker, and then place the beaker in a 180W ultrasonic oscillator for ultrasonic vibration Filter after 10h to obtain modified ball mill powder; pour the modified ball mill powder into a high-pressure reactor filled with 600g of deionized water, and add 30g of potassium permanganate solution with a mass fraction of 5%. , adjust the temperature to 220°C, stir at a speed of 200r / min for 1.5h, let stand to cool to room temperature, and obtain a modified mixed solution; filter the modified mixed solution, and st...

example 2

[0030]Take 110g of melon seed shells, wash them with deionized water, place them in a ball mill jar after natural drying, ball mill them with a speed of 310r / min for 45min, and pass through an 80-mesh sieve to obtain ball milled melon seed shell powders; place the ball milled melon seed shell powders in an oven, Adjust the temperature to 90°C and take it out after 2 hours to obtain dry ball-milled powder; mix 100g of dry ball-milled powder and 200mL of 20% hydrogen peroxide in a beaker, and then place the beaker in a 200W ultrasonic oscillator for ultrasonic vibration Filter after 11 hours to obtain modified ball mill powder; pour the modified ball mill powder into a high-pressure reactor filled with 660g of deionized water, and add 35g of potassium permanganate solution with a mass fraction of 5%. , adjust the temperature to 230°C, stir at a speed of 220r / min for 1.5h, let stand to cool to room temperature, and obtain a modified mixed solution; filter the modified mixed soluti...

example 3

[0032] Get 120g of melon seed shells, wash them with deionized water, place them in a ball mill jar after natural drying, ball mill them at a speed of 320r / min for 50min, and pass through an 80-mesh sieve to obtain ball milled melon seed shell powders; place the ball milled melon seed shell powders in an oven, Adjust the temperature to 95°C and take it out after 3 hours to obtain dry ball-milled powder; mix 100g of dry ball-milled powder and 200mL of 20% hydrogen peroxide in a beaker, and then place the beaker in a 220W ultrasonic oscillator for ultrasonic vibration Filter after 12 hours to obtain the modified ball mill powder; pour the modified ball mill powder into a high-pressure reactor filled with 720g of deionized water, and add 40g of potassium permanganate solution with a mass fraction of 5%. , adjust the temperature to 240°C, stir at a speed of 250r / min for 2h, let stand and cool to room temperature, and obtain a modified mixed solution; filter the modified mixed solut...

technical field

[0001] The invention relates to a method for preparing melon seed shell hydrothermal activated carbon, which belongs to the technical field of biochar adsorption materials. Background technique

[0002] With the extensive use of traditional non-renewable energy sources such as oil, natural gas, and coal, the reserves of activated carbon raw materials have decreased sharply, and at the same time, serious environmental pollution problems have occurred. Therefore, it is necessary to seek a green, low-cost, high-efficiency and sustainable new energy source to meet the growing demand for carbon materials. Biomass contains a large amount of carbon and is the preferred raw material for the preparation of various carbon functional materials. As a renewable energy source, biomass can not only reduce the consumption and dependence on traditional energy sources, but also effectively reduce environmental pollution, especially CO 2 Therefore, it is of great significance...

Examples

example 1

[0028] Take 100g of melon seed shells, wash them with deionized water, place them in a ball mill jar after natural drying, ball mill them at a speed of 300r / min for 40min, pass through an 80-mesh sieve to obtain ball milled melon seed shell powders; place the ball milled melon seed shell powders in an oven, Adjust the temperature to 85°C and take it out after 2 hours to obtain dry ball-milled powder; mix 100g of dry ball-milled powder and 200mL of 20% hydrogen peroxide in a beaker, and then place the beaker in a 180W ultrasonic oscillator for ultrasonic vibration Filter after 10h to obtain modified ball mill powder; pour the modified ball mill powder into a high-pressure reactor filled with 600g of deionized water, and add 30g of potassium permanganate solution with a mass fraction of 5%. , adjust the temperature to 220°C, stir at a speed of 200r / min for 1.5h, let stand to cool to room temperature, and obtain a modified mixed solution; filter the modified mixed solution, and st...

example 2

[0030]Take 110g of melon seed shells, wash them with deionized water, place them in a ball mill jar after natural drying, ball mill them with a speed of 310r / min for 45min, and pass through an 80-mesh sieve to obtain ball milled melon seed shell powders; place the ball milled melon seed shell powders in an oven, Adjust the temperature to 90°C and take it out after 2 hours to obtain dry ball-milled powder; mix 100g of dry ball-milled powder and 200mL of 20% hydrogen peroxide in a beaker, and then place the beaker in a 200W ultrasonic oscillator for ultrasonic vibration Filter after 11 hours to obtain modified ball mill powder; pour the modified ball mill powder into a high-pressure reactor filled with 660g of deionized water, and add 35g of potassium permanganate solution with a mass fraction of 5%. , adjust the temperature to 230°C, stir at a speed of 220r / min for 1.5h, let stand to cool to room temperature, and obtain a modified mixed solution; filter the modified mixed soluti...

example 3

[0032] Get 120g of melon seed shells, wash them with deionized water, place them in a ball mill jar after natural drying, ball mill them at a speed of 320r / min for 50min, and pass through an 80-mesh sieve to obtain ball milled melon seed shell powders; place the ball milled melon seed shell powders in an oven, Adjust the temperature to 95°C and take it out after 3 hours to obtain dry ball-milled powder; mix 100g of dry ball-milled powder and 200mL of 20% hydrogen peroxide in a beaker, and then place the beaker in a 220W ultrasonic oscillator for ultrasonic vibration Filter after 12 hours to obtain the modified ball mill powder; pour the modified ball mill powder into a high-pressure reactor filled with 720g of deionized water, and add 40g of potassium permanganate solution with a mass fraction of 5%. , adjust the temperature to 240°C, stir at a speed of 250r / min for 2h, let stand and cool to room temperature, and obtain a modified mixed solution; filter the modified mixed solut...