FIELD OF INVENTION

The present invention relates to the field of method of multifunctional activated
carbon bricks, in particular types of carbon brick (activated carbon brick, anti-bacterial brick,
15 anti-oxidant brick, ethylene absorber brick, and cross-functional brick).

BACKGROUND

The background description includes information that is useful in understanding
the present invention.
20 [0003] Bad smells and odor coming from the refrigerators is one of the foremost
problems that have triggered various steps for eliminating bad odors. There is additionally, a
growth of mold and bacterial colonies from biological deposits on the surfaces of
refrigerators. These funky odors are usually produced from the molecules of the spoiled foods
and bits that are decomposed as a result of microbial activity. These molecules mix with the
25 internal air of the refrigerator and present a foul smell each time the door is opened.
[0004] Moreover, when the door is opened due to the turbulence of air the microbes
attached to the wall shelve floor is dropped onto the stored foods. This all leads to the
contamination of fresh food also if kept for long or during electricity failures for long hours
the food starts to decay and produces foul smell. In addition to this, the smells from certain
30 food items penetrate into the other food items due to which integrity of the particular food
item lost and it also loses in taste.
[0005] Many steps have been taken to eliminate these odors such as cleaning the insides
of refrigerator with detergent, bleaching chemicals, using deodorants or storing coffee, oats
or baking soda to capture odor molecules. In addition, other odor masking products such as
35 vinegar, lemon, coffee, air fresheners and perfumes leave behind their own fragrance when
used for reducing the foul odors. However, these methods have shown their ineffectiveness to
efficiently remove odors. Recently activated carbon has been used to eliminate odors from
refrigerators. The activated carbon has large surface area for catching elements of bad odor,
absorbs ammonia and VOCs. Activated carbon has been in use since long in odor elimination
40 from refrigerators and kitchen appliances and utilized in the form of granules, pellets,
Page 2 of 9
5 capsules, cartridges and bricks. The present invention is intended to remove bad odors, freeradicals
and microbial outgrowth from the refrigerators with other additional features.
BRIEF DESCRIPTION OF DRAWINGS
10 [0006] The accompanying drawings are included to provide a further understanding of
the present invention, and are incorporated in and constitute a part of this specification. The
drawings illustrate exemplary embodiments of the present invention and together with the
description, serve to explain the principles of the present invention.
[0007] The diagrams are for illustration only, which thus is not a limitation of the present
15 invention.
[0008] FIG. 1 illustrates a flow diagram of the process for preparation of activated carbon
brick according to an embodiment of the present invention.
[0009] FIG. 2 illustrates a flow diagram of the process of preparation of cross-functional
brick with various materials (catechin, activated carbon, copper oxide, etc.).
20 [0010] FIG. 3 shows a view of the molded Activated Carbon brick.
ADVANTAGES OF THE INVENTION
[0011] The invention related to multifunctional carbon bricks comprises of various types
25 of bricks possessing said features:
[0012] A. Activated carbon brick: this type of brick absorbs ammonia and volatile
organic compounds (VOC’s), absorbs bad odors, keeps environment clean and hygiene.
[0013] B. Anti-bacterial brick: kills bacteria, absorbs bad odor, keeps environment
clean and hygiene.
30 [0014] C. Antioxidant brick: free-radical scavenging activity, absorbs ammonia and
volatile, organic compounds (VOC’s), absorbs bad odors, keeps environment clean and
hygiene.
[0015] D. Ethylene absorber brick: absorbs ethylene gas, remove unwanted ethylene
gas through the oxidation process, enhances self-life of fruits and vegetables, absorbs bad
35 odor, and keeps environment clean and hygiene.
[0016] E. Cross-functional brick: absorbs ammonia and volatile organic compounds,
(VOC’s), absorbs bad odors, kills bacteria, radical scavenging activity, absorbs ethylene gas,
enhances shelf life of fruits and vegetables, keeps environment clean and hygiene.
Page 3 of 9
5 DETAILED DESCRIPTION OF INVENTION
[0017] As required, detailed embodiments of the present invention are disclosed herein;
however, it is to be understood that the disclosed embodiments are merely exemplary of the
invention which may be embodied in various forms. Therefore, specific structural and
functional details disclosed herein are not to be interpreted as limiting, but merely as a basis
10 for the claims and as a representative basis for teaching one skilled in the art to variously
employ the present invention in virtually any appropriately detailed structure.
[0018] Various other objects, advantages, and features of the invention will become more
readily apparent to those skilled in the art from the following detailed description when read
in conjunction with the accompanying drawing.
15 [0019] All methods described herein can be performed in any suitable order unless
otherwise indicated herein or otherwise clearly contradicted by context. The use of any and
all examples, or exemplary language (e.g., “such as”) provided with respect to certain
embodiments herein is intended merely to better illuminate the invention and does not pose a
limitation on the scope of the invention otherwise claimed. No language in the specification
20 should be construed as indicating any non-claimed element essential to the practice of the
invention. Various terms as used herein are shown below.
[0020] To the extent a term used in a claim is not defined below, it should be given the
broadest definition persons in the pertinent art have given that term as reflected in printed
publications and issued patents at the time of filing.
25 [0021] The following terms as used herein according to the invention have the following
meanings.
[0022] The invention related to the process of preparation of multifunctional carbon
bricks comprises of various elements having beneficial properties as mentioned below:
[0023] Antioxidants: The catechin contained in the brick has antioxidant properties.
30 Antioxidants are effective in catching free-radicals, protect against ageing and various
diseases partly caused due to oxidative stress, including cancer, type 2 diabetes.
[0024] Activated Carbon: The activated carbon is a carbon type that possess low-volume,
small pores. The activated carbon is used in absorbing ammonia, bad-odors, volatile organic
compounds (VOCs), and oil vapors.
35 [0025] Copper oxide: The copper oxide used in this invention has an antimicrobial and
antibacterial effect.
[0026] The binder used in the brick is preferably PVA based water soluble adhesive.
Other ingredients used are activated carbon granules, copper oxide solution, catechin,
potassium permanganate, etc.
Page 4 of 9
5
10
[0027] Figure 1 illustrates the process of preparation of an activated carbon brick
containing various ingredients comprising the steps of:
a. Mixing a binder in the preferred quantity of 15g of PVA with 250g of activated
carbon in 100ml of water;
b. Heating mixture solution until it forms a solid paste;
c. Fill the mold with the formed paste;
d. Bake the mold at 150 for 50 min; and
e. Finally, the molded brick is formed.
[0028] Figure 2 illustrates the process of preparation of a cross-functional brick
15 containing various ingredients, comprising the steps of:
a. Mixing various ingredients in the preferred quantities, PVA (15-25g), activated
carbon granules (250g), catechin (25g), potassium permanganate (KMnO4) (2.5g) and
copper oxide solution (25ml) in 100ml-150ml of water;
b. Heating mixture solution until it forms a solid paste;
20 c. Fill the mold with the formed paste;
d. Bake the mold at 150 for 50 min; and
e. Finally, the molded brick is formed.
[0029] Figure 3 shows the final view of activated carbon brick, wherein the said
25 properties exist, comprising of anti-bacterial capacities that kills bacteria, absorbs bad odor,
free-radical scavenging, absorbs ammonia and volatile organic compounds (VOC’s), absorbs
ethylene gas, enhances shelf life of fruits and vegetables and keeps environment clean and
hygiene.
30 [0030] EXAMPLES
Various tests were conducted using the above compositions. Below given is the test report
obtained from the NABL accredited laboratory.
No
1
2
Property
Anti-bacterial
Anti-oxidant (DPPH)
Activity
96-99%
50-60%
Page 5 of 9
3
4
5
6
7
VOCs
Odor
Iodine Value
Ethylene
Ammonia
60-70%
70-90%
1000-1200
80-85%
70%

We Claim:

1. An method of multifunctional carbon bricks comprising:
The process of preparing various forms of homogenized multifunctional carbon
bricks comprising of (a) activated carbon, (b) catechin, (c) copper oxide, (d) potassium permagnate,
(e) PVA and water.;
The multifunctional carbon bricks, in particular types of carbon bricks (1) cross-
15 functional brick, (2) activated carbon brick, (3) anti-bacterial brick, (4) anti-oxidant brick, (5)
ethylene absorber brick.
Copper oxide has prepared by as shown in the figure 4.
2. The cross-functional brick (1) as claimed in claim 1 wherein associated ingredient
20 comprising of (a) activated carbon (100-400g), (b) catechin (20-50g), (c) copper-oxide
solution (10-50ml), (d) potassium permanganate (2-8g) and (e) P VA (10-40 g g) are mixed in
100-150ml water and heat processed to form a paste; thereafter, set in molds at 150 for 50
min to form a brick;
The molded cross-functional brick thus produced possess qualities like anti-
25 bacterial (96-99%) capacities that kills bacteria, absorbs bad odor (70-90%), Antioxidant
(50-60% - DPPH assay), Iodine value (1000-1200), free-radical scavenging, absorbs
ammonia (70%) and volatile organic compounds (60-70%), absorbs ethylene gas (80-85%),
enhances shelf life of fruits and vegetables and keeps environment clean and hygiene and
similar properties thereof, when used in refrigerators
30
3. The activated carbon brick (2) as claimed in claim 1 wherein associated ingredient
comprising of (a) activated carbon (250g), (e) P VA (15g) are mixed in 100-150ml water and
heat processed to form a paste; thereafter, set in molds at 150 for 50 min to form a brick;
The activated carbon brick thus produced possess small pores that exhibit
35 absorption qualities good for various benefits; wherein the molded activated carbon brick
absorbs ammonia (70%), volatile organic compounds (60-70%) & eliminates unpleasant
odors (70-90%) when used in refrigerators.
Page 7 of 9
5 The anti-bacterial brick (3) as mentioned in claim 1 wherein associated ingredient comprising
of (c) copper oxide solution (15ml), (a) activated carbon granules and (e) PVA (15-25g) are
mixed in 100-150 ml water and heat processed to form a paste; thereafter, set in molds at 150
for 50 min to form a brick. The anti-bacterial brick (3) thus formed possess antimicrobial
and anti-bacterial properties; wherein the molded anti-bacterial brick kills germs and bacteria
10 (96-99%) & eliminates unpleasant odors (70-90%), when used in refrigerators.
4. The anti-oxidant brick (4) as claimed in claim 1 wherein associated ingredient like (b)
catechin (20-50 g), (a) activated carbon granules and (e) PVA (15-25 g) are mixed in 100150ml
water and heat processed to form a paste; thereafter, set in molds at 150 for 50 min
15 to form a brick; wherein the antioxidants contained in the catechin possess various health
benefits; wherein the molded anti-oxidant brick (4) eliminates free-radicals, removes
unpleasant odors (70-90%), absorbs ammonia (70%) and VOCs (60-70%), keeps
environment clean and hygienic when used in refrigerators.
20 5. The ethylene absorber brick (5) as claimed in claim 1 wherein associated ingredient
comprising of (d) KMnO4, (a) activated carbon granules and (e) PVA are mixed in 100150ml
water and heat processed to form a paste; thereafter, set in molds at 150 for 50 min
to form a brick; wherein the molded ethylene absorber brick (5) absorbs ethylene gas (80-
85%), removes unpleasant odors (70-90%), enhances shelf-life of fruits and vegetables, keeps
25 environment clean and hygienic, when used in refrigerators.
6. The multifunctional carbon bricks as claimed in 1 wherein the processes described in
accompanying (figures 1&2), wherein the associated ingredients in their respective quantities
are mixed and heated to form a paste; wherein this paste is filled into the molds and further
30 baked at 150 for 50 min, processes wherein multifunctional carbon bricks are obtained.
The multifunctional activated carbon brick substantially as herein described
with reference to and as illustrated by the accompanying figures.