Description:FIELD OF THE INVENTION
The present invention relates to the field of eco-friendly paper production. More specifically, it pertains to a method for preparing paper using wheat husk, an agricultural byproduct, as a primary raw material.
BACKGROUND OF THE INVENTION
References which are cited in the present disclosure are not necessarily prior art and therefore their citation does not constitute an admission that such references are prior art in any jurisdiction. All publications, patents and patent applications herein are incorporated by reference to the same extent as if each individual or patent application was specifically and individually indicated to be incorporated by reference.
Conventional paper manufacturing relies heavily on wood pulp, contributing to deforestation, environmental degradation, and resource depletion. To address these challenges, alternative sources of cellulose-rich biomass such as agricultural waste are being explored. Wheat husk is a lignocellulosic byproduct abundantly available from cereal processing. It is generally underutilized or disposed of through burning, leading to environmental pollution. Utilizing wheat husk in paper production offers a sustainable, low-cost, and eco-friendly alternative to wood pulp-based paper.
A sustainable alternative to wood-based paper called wheat straw paper is produced by utilizing farming waste after wheat grain collection. The global demand for sustainable renewable resources has prompted wheat straw to become an acceptable raw material in papermaking thus reducing deforestation and supporting environmental conservation.
The major chemical properties of wheat straw (cellulose and hemicellulose along with lignin) make the material suitable for pulp and paper manufacturing. The production of wheat straw paper from agricultural waste materials enables us to Substitute this sustainable paper type instead of traditional tree fiber-based products. Only after obtaining cleaned pulped wheat straw can the process create useful high-quality paper through bleaching and pressing stages. Wheat straw paper has transformed into a market-capable substitute for typical paper items through pulp process improvements which have enhanced its strength and printability together with increased durability.
The principal environmental advantage of using wheat straw paper lies in its reduced impact on the environment. The production of straw paper requires fewer sources of water and energy and results in smaller greenhouse gas emissions in contrast to wood paper. Wheat straw enables better agricultural leftover management while simultaneously reducing air pollution by decreasing the practice of open-field burning. The product range of wheat straw paper includes notebooks together with office supplies and packaging materials. More enterprises alongside their customers have started to select this eco-friendly solution because of its sustainability benefits. Wheat straw paper serves as an essential environmental tool since it cuts down forestry destruction while efficiently transforming agricultural waste materials and this pairing enables the creation of sustainable solutions during the rising demand for eco-friendly products.
Making paper from wheat husks is a sustainable substitute for conventional wood-based paper that tackles issues like deforestation and the handling of agricultural waste. Additionally, it provides a remedy for the widespread habit of burning wheat husks in large quantities following wheat harvest, which adds to greenhouse gas emissions and air pollution. This process offers a sustainable way to turn wheat husks into useful paper rather than letting them burn or end up in the trash.
The first procedure involves collecting wheat husks followed by their cleansing for contaminant removal. Soaking the husks with water enables the breakdown of lignin and fiber softening before pulp formation takes place. Construction of the pulp from wheat husk occurs through this method which employs water and heat only thus minimizing environmental impact compared to conventional pulping approaches requiring chemical components. The strained boiled husks get distributed across thin drying sheets. The drying time can be hastened through implementation of air-drying methods as well as natural solar drying.
The paper sheets turn into compact shapes with desired textures following the drying process. To enhance paper durability starch as a natural bonding ingredient should be added per usage specifications. The manufacturing process produces wheat husk paper that functions effectively for packaging requirements and works equally well with stationery materials in addition to serving as sustainable crafting items because it maintains its natural slightly gritty surface aspect.
The paper sheets receive pressing to attain specific thickness levels the same as custom texture selection after finishing their drying period. Membership of paper with its life cycle increases through the addition of starch or other natural binding elements according to anticipated usage needs. The original grainy texture of wheat husk paper makes it an excellent choice for packaging materials and stationery items and creative handicrafts of environmental significance.
Paper manufacturing from wheat husk has become a promising eco-friendly replacement because interest grows in sustainable renewable products. The method shows potential to decrease wood pulp dependency while lowering husk-burning emissions and helping sustainability goals through enhanced standard procedures and application expansion.
The production of wheat straw paper serves as a waste-free environmentally sustainable replacement for traditional paper manufacturing processes. Our method utilizes the complete wheat straw supply while making zero waste which produces an environmentally sustainable and efficient solution against the chemical-dependent traditional methods that create substantial waste. This approach eliminates post-harvest wheat straw burning by offering an environment-friendly solution which doubles as a waste management technique for agricultural purposes. The cleaning phase of wheat straw harvest removes all forms of dust and unwanted materials from the harvest components. The water-cooking process decomposes lignin allowing the water-exposure of soft fibers while using no chemical pulping substances. The fibers obtain separation through heat treatment but maintain their original material strength which makes them appropriate for paper production. A softening process allows the compression of fiber material into paper sheets that subsequently dry. Two methods exist to increase efficiency through drying: controlled air drying with solar drying as an alternative.
The fiber sheets obtain their final dimensions together with texture after complete drying through the sheet pressing method. Wheat straw components that serve the manufacturing process make the procedure completely waste-free. The addition of starch binders to paper creates structural strength that remains environmentally decomposable because it relies on natural processes. After manufacture the paper acquires sufficient strength which allows it to serve both as a craft material and stationery item and environmentally friendly packaging alternative. Such sustainable paper manufacturing presents a strong eco-friendly advantage since it eliminates the need for chemicals together with reducing both water consumption and energy usage and destroying waste. The complete utilization of wheat straw eliminates all environmental hazards related to burning due to both soil erosion and air pollution risks. Wheat straw paper entails both attractive organic textures and natural appearances that help customers choose eco-friendly products. The innovative manufacturing process of wheat straw paper presents an acceptable solution to sustainably produced materials. The production of wheat straw paper fuels an environmentally friendly production system that combines sustainable operations with decreased tree-based paper consumption.
Several patents issued for paper production but none of these are related to the present invention. Patent US9702085B2 relates to aqueous furnish with fibers and filler is the first step in the production of paper products. After adding cationic strength additive and anionically charged nanofibrillar cellulose to the aqueous furnish, the furnish is dewatered to create a paper product. The paper product's filler content can be raised to 40 weight percent.
Another patent GB2283989A relates to Banana fibers from the plant's stems, trunk, and leaves are used to make high-quality paper, such as security paper, electrical insulating paper, and carbon paper. This process involves cutting the fibers into chips, pithing, and degumming them using a mechanical and chemical process, then washing, pressing, digesting, cleaning, bleaching, and finally creating the paper.
Another patent US9702085B2 relates to a method of producing a cellulose based paper, the paper itself and the use thereof where the paper exhibits enhanced mechanical properties. The method involves providing a suspension of well dispersed modified cellulose at a low concentration. The properties and the chemical structure of the paper make it suitable for in vivo applications such as implant material.
Another patent US9702085B2 provides the invention relates to a method for manufacturing nanostructured paper or board and a novel paper or board. The method comprises providing a liquid suspension of nanocellulose-containing material, forming a web from the suspension and drying the web in order to form paper or board. According to the invention, the water content of the suspension at the time of beginning of the drying is 50 % or less by weight of liquids so as to form a paper or board having an average pore size between 200 and 400 nm. By means of the invention, very opaque paper, for example for printing applications, can be manufactured with low energy consumption.
Another patent US9702085B2 relates to a fiber-fiber composite is disclosed herein comprising majority fibers and minority fibers, the minority fibers having a softening point lower than said majority fibers such that when the admixture of majority fibers and minority fibers are wet laid to form a paper-like structure and subjected to a pressure and a temperature above the softening point of said minority fibers, said majority fibers and minority fibers form said composite having a mean pore diameter equal to or less than about 1 µm with a porosity of greater than about 35%, and a wet strength of greater than about 0.013 kg/mm.
OBJECTS OF THE INVENTION
Main object of the present invention is to prepare of paper from wheat husk.
Another object of the present invention is to develop a method for manufacturing paper using wheat husk as the main fibrous raw material.
Another object of the present invention is to provide an environmentally sustainable process for paper production.
Another object of the present invention is to reduce dependency on wood pulp and minimize deforestation.
Another object of the present invention is to utilize agricultural waste effectively and reduce air pollution caused by burning husk.
SUMMARY OF THE INVENTION
This summary is provided to introduce a selection of concepts, in a simplified format, that are further described in the detailed description of the invention.
This summary is neither intended to identify key or essential inventive concepts of the invention and nor is it intended for determining the scope of the invention.
To further clarify advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof, which is illustrated in the appended drawings.
The present invention discloses a novel and sustainable method for preparing paper from wheat husk. The process involves the collection and cleaning of wheat husk, chemical pretreatment for delignification, mechanical pulping, sheet formation, and drying to produce usable paper. The invention utilizes low-cost, eco-friendly chemicals and minimizes water and energy consumption. The resulting paper demonstrates suitable physical and optical properties for writing, printing, and packaging applications. The invention enables value addition to agro-waste and supports environmentally responsible manufacturing practices.
Herein enclosed an eco-friendly method for preparing paper from wheat husk, comprising the steps of:
Cleaning wheat husk with water to remove impurities;
Drying the cleaned husk under sunlight;
Peeling the dried husk and boiling the peeled material in water at 100°C;
Cooling the boiled material to room temperature and grinding it into a fine pulp;
Mixing the pulp with water in a container to form a suspension;
Immersing a strainer or mesh into the pulp suspension to collect a uniform layer of material;
spreading the material evenly on the strainer; and
Drying the pulp layer under sunlight for about one day to obtain a paper sheet.
The drying step in sunlight is performed for a duration ranging from 6 to 24 hours depending on ambient weather conditions.
The grinding step is carried out using a mechanical grinder until a homogeneous pulp consistency is achieved.
The boiling step enhances fiber separation by partially breaking down lignin and softening cellulose.
The final paper product is biodegradable, suitable for writing, packaging, and craft applications, and free from chemical additives.
BRIEF DESCRIPTION OF THE DRAWINGS
The illustrated embodiments of the subject matter will be understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of example, and simply illustrates certain selected embodiments of devices, systems, and methods that are consistent with the subject matter as claimed herein, wherein:
Fig 1: Image of the final product prepared from wheat straw.
Fig 2: SEM images of wheat straw showing morphology of the product at 500X and 1000X magnification.
Fig 3: EDS of the wheat straw showing elements present in the product. The prepared product contains 54.79% elemental Carbon (C). 41.73% oxygen (O), 2.97% and 0.50% Nitrogen (N) and phosphorus (P) respectively.

DETAILED DESCRIPTION OF THE INVENTION
The detailed description of various exemplary embodiments of the disclosure is described herein with reference to the accompanying drawings. It should be noted that the embodiments are described herein in such details as to clearly communicate the disclosure. However, the amount of details provided herein is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present disclosure. Moreover, all statements herein reciting principles, aspects, and embodiments of the present disclosure, as well as specific examples, are intended to encompass equivalents thereof.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a",” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises,” “comprising,” “includes” and/or “including,” when used herein, specify the presence of stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof.
It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
In addition, the descriptions of "first", "second", “third”, and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include at least one of the features, either explicitly or implicitly.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In some embodiments of the present invention, wheat straw is first collected and thoroughly cleaned using clear water to remove dust, soil, and other unwanted particles. The material is then sieved or filtered to eliminate larger impurities and non-uniform pieces.
In some embodiments of the present invention, the cleaned wheat straw is uniformly spread and dried under direct sunlight to eliminate moisture content. Proper drying enhances the efficiency of subsequent processing steps.
In some embodiments of the present invention, once dried, the straw is manually or mechanically peeled to remove the outer layers, which are then used for paper pulp preparation.
In some embodiments of the present invention, the peeled straw material is boiled in clean water at a temperature of approximately 100°C. The boiling process helps in softening the fibers and partially breaks down lignin to facilitate pulping.
In some embodiments of the present invention, after boiling, the mixture is allowed to cool to room temperature (approximately 5 minutes). This step is crucial to ensure safe handling during mechanical grinding.
In some embodiments of the present invention, the cooled boiled material is subjected to grinding using a grinder or pulverizer machine. The material is processed until a fine pulp-like consistency is achieved, ensuring uniform fiber dispersion.
In some embodiments of the present invention, the finely ground pulp is then mixed in a utensil containing water (approximately half-filled). The mixture is stirred to achieve a homogenous suspension of fibrous material.
In some embodiments of the present invention, a mesh strainer or paper-making screen is dipped into the pulp suspension. The strainer is moved gently to collect a uniform layer of pulp on its surface.
In some embodiments of the present invention, the collected pulp on the strainer is spread evenly to form a thin sheet. Care is taken to avoid clumping or uneven thickness.
In some embodiments of the present invention, the strainer containing the evenly spread pulp is placed under direct sunlight and left to dry for approximately one day. The natural drying process solidifies the pulp into a cohesive paper sheet.
Herein enclosed an eco-friendly method for preparing paper from wheat husk, comprising the steps of:
Cleaning wheat husk with water to remove impurities;
Drying the cleaned husk under sunlight;
Peeling the dried husk and boiling the peeled material in water at 100°C;
Cooling the boiled material to room temperature and grinding it into a fine pulp;
Mixing the pulp with water in a container to form a suspension;
Immersing a strainer or mesh into the pulp suspension to collect a uniform layer of material;
spreading the material evenly on the strainer; and
Drying the pulp layer under sunlight for about one day to obtain a paper sheet.
The drying step in sunlight is performed for a duration ranging from 6 to 24 hours depending on ambient weather conditions.
The grinding step is carried out using a mechanical grinder until a homogeneous pulp consistency is achieved.
The boiling step enhances fiber separation by partially breaking down lignin and softening cellulose.
The final paper product is biodegradable, suitable for writing, packaging, and craft applications, and free from chemical additives.
EXAMPLE 1
BEST METHOD
The present invention provides a sustainable and environmentally friendly method for producing paper using wheat husk (wheat straw), an agricultural waste material. Initially, the wheat straw is collected and thoroughly cleaned with clear water to remove dust, dirt, and impurities. The cleaned material is then dried in sunlight to remove residual moisture. Once dried, the straw is peeled to separate the outer fibrous layers, which are then subjected to boiling at 100°C in clean water. Boiling softens the cellulose fibers and assists in partial breakdown of lignin. After boiling, the material is allowed to cool at room temperature for approximately 5 minutes, after which it is transferred to a grinder. The material is then finely ground until a uniform pulp consistency is achieved, suitable for sheet formation.
The prepared pulp is mixed in a container half-filled with water and stirred thoroughly to create a uniform suspension. A mesh strainer or screen is immersed in the pulp solution and gently agitated to collect a thin, even layer of pulp on its surface. The pulp is then spread evenly across the strainer to form a uniform sheet. This sheet, still on the strainer, is left to dry under sunlight for one full day, allowing the moisture to evaporate and the fibers to bind naturally into a solid sheet of paper. The resulting paper is biodegradable, free from harmful chemicals, and suitable for eco-conscious applications such as writing, drawing, and packaging. This method is low-cost, simple, and ideal for rural or small-scale paper production units aiming to utilize agro-waste resources.
RAW MATERIAL:
The primary raw material used in the present invention is wheat straw, which is readily available as a byproduct from wheat cultivation. The wheat straw contains cellulose, hemicellulose, and lignin—components essential for papermaking.
METHODOLOGY
The wheat straw was taken and cleaned thoroughly with clear water. The resulting powder was filtered to remove larger particles.
The cleaned wheat straw was dried properly under sunlight.
The dried straw was then taken and peeled carefully.
The peeled parts were boiled in water at 100°C.
The boiled material was allowed to cool for 5 minutes at room temperature, after which it was transferred to a grinder.
The material was ground properly until it became fine and uniform in texture.
Once finely ground, the material was poured into a utensil that was half-filled with water.
A strainer, suitable for paper-making, was dipped into the water to collect the suspended material.
The collected material in the strainer was spread evenly to form a thin layer.
The strainer with the spread material was then left to dry under sunlight for one day.
ADVANTAGE OF THE PRESENT INVENTION:
The present invention offers several significant advantages, including the effective utilization of wheat husk—an abundant agricultural waste—as a raw material for paper production, thereby reducing environmental pollution and promoting waste-to-wealth practices. It eliminates the need for wood pulp, contributing to forest conservation and reducing deforestation. The method is chemical-free, eco-friendly, and energy-efficient, relying on simple equipment and natural sunlight for drying, making it highly suitable for small-scale, rural, or home-based industries. Additionally, the resulting paper is biodegradable, cost-effective, and suitable for various applications such as writing, packaging, and crafts.

, Claims:1. An eco-friendly method for preparing paper from wheat husk, comprising the steps of:
a) cleaning wheat husk with water to remove impurities;
b) drying the cleaned husk under sunlight;
c) peeling the dried husk and boiling the peeled material in water at 100°C;
d) cooling the boiled material to room temperature and grinding it into a fine pulp;
e) mixing the pulp with water in a container to form a suspension;
f) immersing a strainer or mesh into the pulp suspension to collect a uniform layer of material;
g) spreading the material evenly on the strainer; and
h) drying the pulp layer under sunlight for about one day to obtain a paper sheet.
2. The method as claimed in claim 1, wherein the drying step in sunlight is performed for a duration ranging from 6 to 24 hours depending on ambient weather conditions.
3. The method as claimed in claim 1, wherein the grinding step is carried out using a mechanical grinder until a homogeneous pulp consistency is achieved.
4. The method as claimed in claim 1, wherein the boiling step enhances fiber separation by partially breaking down lignin and softening cellulose.
5. The method as claimed in claim 1, wherein the final paper product is biodegradable, suitable for writing, packaging, and craft applications, and free from chemical additives.