1. A portable electric toothbrush, comprising:
a main body having a switch;
a brush head having a plurality of bristles and connected to one end of said main body, wherein said brush head is removable so as to be replaced when said brush head is malfunctioned;
a holding portion connected to the other end of said main body;
a charging circuit configured within said main body;
a control circuit coupled to said switch;
a motor coupled to said control circuit; and
an universal serial bus interface coupled to said charging circuit in order for an external power source to provide electricity to said charging circuit through said universal serial bus interface to perform charging.
2. The portable electric toothbrush of claim 1, further comprising a microprocessor coupled to said charging circuit and said control circuit.
3. The portable electric toothbrush of claim 2, further comprising a display component coupled to said microprocessor to provide a function of light indication.
4. The portable electric toothbrush of claim 1, wherein a run time of said portable electric toothbrush is determined by said control circuit.
5. The portable electric toothbrush of claim 1, wherein a rotation speed of said motor is determined by said control circuit.
6. The portable electric toothbrush of claim 1, further comprising a brush protecting cover combined with said holding portion correspondingly to protect said brush head.
7. The portable electric toothbrush of claim 1, further comprising a chargeable battery coupled to said charging circuit.
8. The portable electric toothbrush of claim 7, further comprising a wireless charging module coupled to said chargeable battery.
9. The portable electric toothbrush of claim 7, further comprising a voltage detecting circuit coupled to said chargeable battery and said control circuit to stabilize a rotation speed of said motor.
10. The portable electric toothbrush of claim 7, further comprising a voltage stabilizing circuit coupled to said chargeable battery and said control circuit to stabilize a rotation speed of said motor.
11. The portable electric toothbrush of claim 7, further comprising a boost circuit coupled to said chargeable battery and said control circuit to drive said motor.
12. The portable electric toothbrush of claim 1, wherein said universal serial bus interface is hidden into said holding portion through rotation or pressing.
13. The portable electric toothbrush of claim 1, further comprising an universal serial bus interface protecting cover combined with said holding portion correspondingly to protect said universal serial bus interface.
14. An electrically vibrational product, comprising:
a main body having a switch;
a holding portion connected to one end of said main body;
a charging circuit configured within said main body;
a control circuit coupled to said switch;
a motor coupled to said control circuit; and
an universal serial bus interface coupled to said charging circuit in order for an external power source to provide electricity to said charging circuit through said universal serial bus interface to perform charging.
15. The electrically vibrational product of claim 14, further comprising a protecting cover combined with said holding portion correspondingly.
16. The electrically vibrational product of claim 14, further comprising a chargeable battery coupled to said charging circuit.
17. The electrically vibrational product of claim 16, further comprising a wireless charging module coupled to said chargeable battery.
18. The electrically vibrational product of claim 16, further comprising a voltage stabilizing circuit coupled to said chargeable battery and said control circuit to stabilize a rotation speed of said motor.
19. The electrically vibrational product of claim 14, wherein said universal serial bus interface is hidden into said holding portion through rotation or pressing.
20. The electrically vibrational product of claim 14, further comprising an universal serial bus interface protecting cover combined with said holding portion correspondingly to protect said universal serial bus interface.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of making sodium carbonate andor sodium bicarbonate, comprising reacting carbon dioxide gas with an aqueous solution comprising sodium hydroxide in the presence of sodium hypochlorite, wherein the sodium hypochlorite and sodium hydroxide are present in the aqueous solution at a molar ratio of NaClO:NaOH of from 2.69\xd710\u22123:1.0 to 2.69\xd710\u22121:1.0.
2. The method of claim 1, further comprising generating the aqueous solution comprising sodium hydroxide by electrolysis of an aqueous solution comprising sodium chloride in an electrical cell comprising a cathode chamber and an anode chamber separated by a membrane.
3. The method of claim 2, further comprising collecting aqueous solution comprising sodium hydroxide from the cathode chamber, and reacting it with chlorine gas collected from the anode chamber to produce sodium hypochlorite as the compound of formula (I).
4. The method of claim 1, wherein the aqueous solution reacted with the carbon dioxide gas comprises less than 25 wt. % sodium hydroxide, based on the total aqueous solution weight.
5. The method of claim 1, wherein the aqueous solution reacted with the carbon dioxide gas comprises less than or equal to 23 wt. % sodium hydroxide, based on the total aqueous solution weight.
6. The method of claim 1, wherein the aqueous solution reacted with the carbon dioxide gas comprises less than or equal to 20 wt. % sodium hydroxide, based on the total aqueous solution weight.
7. The method of claim 1, wherein the aqueous solution reacted with the carbon dioxide gas comprises at least 25 wt. % sodium hydroxide, based on the total aqueous solution weight.
8. The method of claim 1, wherein the sodium hypochlorite is present in the aqueous solution in an amount of from 0.1 to 10 wt. %, based on the total aqueous solution weight.
9. The method of claim 1, wherein the sodium hypochlorite is present in the aqueous solution in an amount of from 0.5 to 5 wt. %, based on the total aqueous solution weight.
10. The method of claim 1, wherein the sodium hypochlorite and the sodium hydroxide are present in the aqueous solution at a molar ratio of NaClO:NaOH of 2.69\xd710\u22122:1.0 to 5.36\xd710\u22122:1.0.
11. The method of claim 1, wherein the carbon dioxide gas is reacted with the aqueous solution comprising sodium hydroxide at a temperature less than 100\xb0 C.
12. The method of claim 1, wherein the carbon dioxide gas is reacted with the aqueous solution comprising sodium hydroxide at a temperature of 35\xb0 C. to 85\xb0 C.
13. The method of claim 1, further comprising reacting hydrogen chloride with calcium carbonate to form the carbon dioxide gas.
14. The method of claim 1, wherein the carbon dioxide gas and aqueous solution comprising sodium hydroxide and sodium hypochlorite are introduced to a carbonation reactor, and sodium carbonate andor sodium bicarbonate is removed from the carbonation reactor.