Method for efficiently removing bisphenol pollutants in water body and compound biochar material
A technology for biochar and pollutants, applied in water pollutants, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of reducing the total amount of materials used, improve the treatment efficiency and effect, reduce the amount of desorption, and reduce the amount of adsorption. large amount of effect
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Embodiment 1
[0048] See attached Figure 1-6 , the efficient removal method of bisphenols pollutants in the water body provided by the present embodiment, taking the removal of BPA and TBBPA in bisphenols pollutants as an example, it includes the following steps:
[0049] A. Three types of biochar materials were prepared respectively: biochar BC, ball milled modified biochar BBC, iron oxide modified biochar BC@Fe 3 o 4 biochar material;
[0050] B. Calculate the maximum solid loading capacity of the three types of materials per unit weight for various bisphenol pollutants (BPA, TBBPA) in sewage;
[0051] C. Determination of the content of various bisphenol pollutants (BPA, TBBPA) in sewage samples;
[0052] D. Take at least 1 category of BC, BBC and BC@Fe3 o 4 The objective function is to minimize the total weight of the composite materials, and the maximum solid load of the sum is not less than the content of various bisphenol pollutants (BPA, TBBPA) in the sewage sample as the constr...
Embodiment 2
[0056] The high-efficiency removal method of bisphenol pollutants in the water body and the composite biochar material provided in this embodiment are basically the same as in Example 1, and the removal method further includes the following steps on the basis of Example 1:
[0057] A1. Prepare 3 types of 12 kinds of biochar materials, which are 4 kinds of biochar prepared by pyrolyzing sawdust biomass in a nitrogen atmosphere at 350 ° C, 500 ° C, 650 ° C, and 800 ° C for 4 h, The corresponding marks are BC350, BC500, BC650, BC800;
[0058] Further, BC350, BC500, BC650, BC800 and agate grinding balls were placed in a ball milling jar for grinding, and their shapes were ground into irregular particles. The corresponding ball-milled modified biochars were marked as: BBC350, BBC500, BBC650, BBC800 ;
[0059] Then BC350, BC500, BC650, and BC800 were modified with iron oxides, and the obtained iron oxide biochars were marked as: BC350@Fe 3 o 4 、BC500@Fe 3 o 4 、BC650@Fe 3 o 4 ...
Embodiment 3
[0131] The efficient removal method of bisphenol pollutants in the water body provided by this embodiment and the composite biochar material are basically the same as those in Examples 1 and 2, and the removal method is based on Examples 1 and 2. Step A1, according to the mass ratio, further includes the following steps:
[0132] A1-1. Biomass pretreatment:
[0133] Rinse the sawdust biomass with clear water to remove dust and other pollutants attached to the biomass; place the cleaned biomass in an oven for drying at 30-40°C, and pass through an 80-mesh sieve for subsequent use after drying.
[0134] A1-2, preparation of biochar BC:
[0135] Wrap the set amount of biomass with tin foil and place it in the muffle furnace, and exhaust the air through the nitrogen gas in the muffle furnace for 30 min; set every 150 °C as a temperature interval, and set the temperature interval at 350 °C in the nitrogen atmosphere. °C, 500 °C, 650 °C, and 800 °C for 4 hours of pyrolysis, the te...
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