a tio 2 /sio 2 -Banana peel biochar composite adsorption material and preparation method thereof
A composite adsorption material, banana peel technology, applied in chemical instruments and methods, chemical/physical processes, adsorbed water/sewage treatment and other directions, can solve problems such as secondary environmental pollution, and achieve low cost, wide sources, and simple preparation technology. Effect
Active Publication Date: 2021-07-23
HUNAN AGRICULTURAL UNIV
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Problems solved by technology
Although the physical adsorption method can adsorb pollutants in the soil on the adsorbent carrier, it does not fundamentally change the toxicity of the pollutants. Once these adsorbent materials are not properly disposed of, it is easy to cause secondary pollution to the environment. Therefore, it is urgent to develop a Adsorbent material capable of degrading organic pollutants by adsorption and removal
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Embodiment 1
[0028] A kind of TiO 2 / SiO 2 -The preparation method of banana peel biochar composite adsorption material, comprises the following steps:
[0029] (1) Wash the banana peels obtained after removing the flesh of 1.5kg bananas with distilled water, transfer them to an oven, dry them at 100° C., pulverize them with a universal grinder, and pass through a 100-mesh sieve to obtain banana peel powder.
[0030] (2) the banana peel powder that step (1) is made is placed in the Erlenmeyer flask with stopper, adds the phosphoric acid of 100mL volume fraction 30% in the Erlenmeyer flask with stopper, carries out stopper sealing oscillation, and oscillation frequency is 150r / min, temperature at 25°C, shake for 12 hours, filter, and dry the resulting filter residue in an oven at 100°C-105°C to obtain phosphoric acid-modified banana peel powder.
[0031] (3) Transfer all the phosphoric acid-modified banana peel powder obtained in step (2) to a conical flask with a stopper, take another be...
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Abstract
The invention discloses a TiO 2 / SiO 2 - preparation method of banana peel biochar composite adsorption material and the adsorption material made thereof, which comprises: cleaning banana peel, drying, pulverizing, sieving to obtain powdery material, mixing and shaking with phosphoric acid solution, filtering, drying, Prepare phosphoric acid modified banana peel powder. TiO was synthesized by sol-gel method 2 and SiO 2 loaded on the surface of modified banana peel biochar to prepare TiO 2 / SiO 2 – Banana peel biochar composite adsorption material. The present invention utilizes agricultural production waste banana peels to prepare biochar, which has abundant raw materials, turns waste into treasure, and the preparation method is simple in process and low in cost, and the prepared composite adsorption material has remarkable adsorption effect on the herbicide quinclorac TiO with photodegradation of organic pollutants 2 , while solving the adsorption capacity, the composite adsorption material can be used for the synergistic effect of the adsorption of quinclorac and the photocatalytic degradation, and the organic pollutants can be degraded while being completely adsorbed and removed more efficiently, quickly and without pollution.
Description
technical field [0001] The invention relates to a composite adsorption material, in particular to a TiO 2 / SiO 2 -Banana peel biochar composite adsorbent and preparation method thereof. Background technique [0002] With the accelerated development of urbanization in our country, a large number of rural laborers have transferred to cities, resulting in a serious shortage of rural labor force. In addition, in recent years, the large-scale land planting and management in rural areas has accelerated, and manual weeding has gradually decreased. Chemical weeding is increasingly accepted by farmers. Therefore, my country The demand for herbicides is increasing day by day. As an important input material in agricultural production, herbicides can promote agricultural development and reduce workload, so they are widely used in agricultural and forestry production. However, the extensive use of herbicides has also brought a series of environmental problems, especially some herbicides...
Claims
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IPC IPC(8): B01J20/20B01J20/30B01J21/18C02F1/28C02F1/30C02F101/36
CPCB01J20/06B01J20/103B01J20/20C02F1/281C02F1/283C02F1/30B01J21/18C02F2101/36C02F2305/10B01J2220/4875B01J2220/4825B01J2220/42B01J2220/4806B01J35/39
Inventor 杨丽华曾新颜龚道新罗海峰蒋方舟雷爽肖灿玲
Owner HUNAN AGRICULTURAL UNIV