Bamboo Leaf Ash Research Articles

Environmental assessment of alkali-activated materials based on agro-industrial waste as alkaline activators through leaching tests

Global circular economy drives the development of sustainable alkali activated materials (AAM) for use as construction material from industrial by-products and wastes. The assessment of the potentially hazardous substances release of these new material combinations into the soil and groundwater over time is essential. In this study, the aim is the environmental assessment of three AAMs based on blast furnace slag (BFS), activated with almond shell biomass ash (ABA) as potassium source and three solid sources of silica from the agricultural industry, rice husk ash (RHA), spent diatomaceous earth (SDE) and bamboo leaf ash (BLA), using European horizontal leaching tests proposed for construction materials, for monolithic form, Dynamic Surface Leaching Test (DSLT) and for granular form, Up-flow Percolation Test and the Compliance leaching test, by simulating different scenarios of their entire life cycle. The leaching results of the AAM showed the effectiveness of the inertization of all the recycled materials studied, which exceeded some inert materials limits, by means of the activation process. Despite the absence of significant differences in the leaching mechanisms of the oxyanions As, Cr, Mo, Sb, Se and V between the three AAMs developed, they presented different long-term leaching behavior depending on their form, monolithic, or granular, and therefore in their different life cycle stages. Therefore, it is concluded that although the incorporation of agro-industrial waste as alternative activators in BFS based AAM according to the Dutch Soil Quality Decree (for unrestricted use of monolithic and granular materials) is an environmentally acceptable option, the design of waste derived AAMs should be assessed by means of a combination of leaching tests that cover their expected life cycle.

Consequential life cycle assessment of bamboo leaf ash generation: A Brazilian context

The potential of biomass growth, such as from bamboo leaves, as a source of electricity provides an optimistic scenario for the sustainable development of new green building materials. To validate robust life cycle inventory (LCI) data for incoming high-quality silica sources for cementitious materials, a consequential life cycle assessment (CLCA) on the bamboo leaves ash (BLA) with a prospective approach was conducted. The LCI data was collected in Southeastern Brazil with a prospective maturity in biomass electricity system. The data was gathered by analyzing the various stages involved in the production of BLA, including bamboo cultivation, leaf collection, cogeneration, raw BLA beneficiation, and its impact on cement and electricity marginal production systems. According to the multifunctionality solution, the environmental impacts results of CLCA were discussed using a sensibility analysis with two attributional life cycle assessment (ALCA) scenarios as allocation and “zero environmental load” (considering BLA as residue). The scenarios demonstrate the potential for sustainable use of BLA, especially for its impact on climate change, including the biogenic carbon category. Also, consequences such as avoiding BLA landfilling and increasing the potential for bamboo agricultural holdings to become energy independent was included in the study conclusion. While these results are positive, the prospect of maturing electricity production requires the development of other high-quality materials, such as sugarcane bagasse ash, sugarcane leaf ash and rice husk ash. However, the positives consequences did not overcome the negative impacts from the transportation of BLA into its system boundaries, once the highway transport model is the manly in the Brazilian context. Hence, this study provides important and reproducible pathways for developing LCI data on other biomass ashes, assisting future studies on green building materials.

Valorization of Fine-Fraction CDW in Binary Pozzolanic CDW/Bamboo Leaf Ash Mixtures for the Elaboration of New Ternary Low-Carbon Cement

This paper presents the characterization of a binary mixture of construction and demolition waste (CDW) and bamboo leaf ash (BLAsh) calcined at 600 °C (novel mixture) and the study of its pozzolanic behavior. Different dosages in a pozzolan/Ca(OH)2 system were employed. The aim is the valorization of fine-fraction CDW that achieves a more reactive binary mixture and allows an adequate use of CDW as waste, as CDW is a material of limited use due to its low pozzolanic activity. The pozzolanic behavior of the mixture was analyzed using the conductometric method, which measures the electrical conductivity in the CDW + BLAsh/CH solution versus reaction time. With the application of a kinetic–diffusive mathematical model, the kinetic parameters of the pozzolanic reaction were quantified. This allowed a quantitative evaluation of the pozzolanic activity based on the values of these parameters. To validate these results, other experimental techniques were used: X-ray diffraction, thermogravimetry and scanning electron microscopy. Also, mechanical compressive strength assays were carried out. The results show an increase in the pozzolanic activity of binary mixes of CDW + BLAsh for all the dosages used in comparison to the pozzolanic activity of CDW alone. The quantitative assessment (kinetic parameters) shows that the binary mixture CDW50 + BLAsh50 is the most reactive (reaction rate constant of 7.88 × 10−1 h−1) and is superior to the mixtures CDW60 + BLAsh40 and CDW70 + BLAs30. Compressive strength tests show higher strength values for the ternary mixes (OPC + CDW + BLAsh) compared to the binary mixes (OPC + CDW). In view of the results, the binary blend of pozzolans CDW + BLAsh is suitable for the manufacture of future low-carbon ternary cements.

The Effect of Adding Bamboo Leaf Ash and Cement on the Stability of Clay Soil

Subgrade soil or clay subgrade is a type of soil with very high pore water characteristics, causing problems for civil structures, both buildings and road pavements. Bamboo leaf ash contains several compounds such as silica (SiO2) at 77.24%, while cement contains several calcium oxide (CaO) compounds at 60%. Bamboo leaf ash has a high silica content which functions as a support for pozzolanic reactions with clay soil. The variations in the mixture of bamboo leaf ash and cement used are 2%, 3%, 4%, 5% and 6% for bamboo leaf ash and 20% for cement by weight of soil, with a curing time of 4 days. From the two tests that have been carried out, namely soil compaction (Standard Proctor) and Unsoaked CBR (California Bearing Ratio), the optimum values ​​obtained for soil compaction (Standard Proctor) and CBR (California Bearing Ratio) Unsoaked are in the variation of soil + cement addition of 20% + Bamboo Leaf Ash 3%. In the soil compaction test (Standard Proctor), the dry volume weight value was 1,728 gr/cm3 and the optimum water content value was 16.02%, while in the Unsoaked CBR (California Bearing Ratio) the optimum CBR percentage value was 10.25%.

Innovative utilization of agro-industrial by-products: Bamboo leaf ash as a pozzolanic material for extruded fiber cement composites

This study aims to promote the valorization of agro-industrial waste and sustainability in the construction industry by evaluating the potential of bamboo leaf ash (BLA) as a partial replacement for Portland cement in extruded fiber cement. Squeeze flow, physical, mechanical, and microstructural analyses (Scanning Electron Microscopy and X-ray microtomography) were conducted. The results showed that the incorporation of fibers and BLA leads to an increased water demand and, consequently, an increase in porosity and pore connectivity. However, the mix design with 10 % replacement exhibited improved mechanical behavior for modulus of rupture (10.2 %) and limit of proportionality (4.5 %), when compared to a formulation without BLA. For the other parameters, the mix design with 10 % BLA showed mechanical behavior with no statical difference to the mix design without ash. Thus, the use of BLA as a partial replacement for Portland cement represents an alternative with technical and environmental improvements for fiber cement.

Intensifikasi Sintesis Diasetin dan Triasetin Melalui Esterifikasi Gliserol Dengan Katalis Berbasis Daun Bambu

The synthesis of acetins from glycerol is achieved through esterification assisted by a solid acid catalyst and microwave irradiation. Diacetin and triacetin, suitable as biofuel additives, are produced using biogenic silica from bamboo leaves, which is chemically activated with strong acid and calcined. No research has utilized silica catalysts derived from bamboo leaf ash to produce diacetin and triacetin. This study aims to employ bamboo leaf-based heterogeneous catalysts to enhance triacetin selectivity, simplify product purification and separation, and enable catalyst reuse. Furthermore, microwave application can accelerate the reaction time. The best total selectivity for diacetin and triacetin was obtained under operating conditions of 3% catalyst concentration, a 1:6 molar ratio, and 60 minutes of microwave irradiation. The yields of diacetin and triacetin under these conditions were 65.80% and 18.70%, respectively. GC-MS and FTIR analysis confirm the presence of monoacetin, diacetin, and triacetin, with a total selectivity for diacetin and triacetin of 84,50%.

Corrosion Behaviour of Commonly Used Epoxy Resin Coated Agro Based Industrial Reinforcements

bstract: In this integrated study, the project aims to develop a novel hybrid green metal matrix composite using stir casting, reinforcing aluminum alloy with Waste materials such as Waste Carbonized Eggshells (WCE), Cow Dung Ash (CDA), Snail Shell Ash (SSA), and Bamboo Leaf Ash (BLA) The experiment incorporates various organic-inorganic mixed coatings, including vinyltrimethoxysilane (VMS), [3-(methacryloxy)propyl] trimethoxy silane (MPMS), and (3-glycidoxyproyl) trimethoxy silane (GPMS), combined with tetraethoxysilane (TEOS), to enhance corrosion resistance. Potentiodynamic polarization curves, SEM images, and salt spray tests are employed to assess coating durability against corrosion. Results indicate significant reductions in corrosion flow with VMS and MPMS coatings, particularly with a 15-20% TEOS ratio, showcasing optimal corrosion resistance against salt spray. This innovative approach combines material recycling and advanced coating techniques to produce a sustainable composite with improved mechanical properties and corrosion resistance.

Development of sustainable interlocking concrete paving blocks using bamboo leaf ash and metakaolin

Eco-friendly interlocking concrete pavement block was developed using the admixture of bamboo leaf ash and metakaolin. This was done to develop an eco-friendly interlocking paving block for sustainable pavement construction. Bamboo leaf ash and metakaolin were added as a supplementary cementitious material. The supplementary cementitious material (bamboo leaf ash and metakaolin) were admixed and added at 0, 5, 10, 15, 20, 25 and 30 % replacement of cement. The workability of the fresh concrete (slump) at the varied percentage additions, and the mechanical properties of the concrete at 7, 14, 28, and 56 days of curing were assessed, including their microstructural characteristics. The outcome of the research showed that increasing the percentage of (bamboo leaf ash + metakaolin) reduces the workability of the concrete. With a 20 % addition of this cementitious material, the developed fresh concrete became unworkable. In addition, replacing up to 10 % of the concrete in the pavement with bamboo leaf ash and metakaolin increased the mechanical strength of the concrete by 28.7 %. At 30 % a percentage increase of 3.6 % was recorded. However, the strength at 5 % was still adequate for pavement construction with a 13.62 % increase in mechanical strength. The compressive strength at 5 % and 10 % addition of the supplementary cementitious material at maturity met the criteria for constructing a semi-rigid pavement, using IRC standards. The microstructural assessment showed that the number of pores in the mature concrete samples decreased at 10 % addition of bamboo leaf ash and metakaolin. The research data provides construction workers, researchers, and highway engineers with vital information regarding the viability of these sustainable materials for pavement improvement.

Comparative performance of M-S-H cement vs. portland cement in fiber cement incorporating bamboo leaf ash and cellulosic fibers

This study evaluates the potential of alternative materials such as Hydrated Magnesium Silicate (M-S-H) cement, bamboo leaf ash (BLAsh), and cellulose fibers to enhance the sustainability and performance of fiber cement composites. Innovative in its approach, the research incorporates BLAsh and cellulose fibers into M-S-H and Portland cement (OPC) matrices using an innovative production process: extrusion. For the characterization of different formulations, a comparative analysis was conducted on samples with M-S-H and Portland cement matrices, with BLAsh replacing limestone and the addition of unbleached pine cellulose fibers. The analysis covered the physical, mechanical, and microstructural properties of the composites. After a 7-day curing period, they were subjected to 200 cycles of accelerated aging to evaluate durability. Microstructural analysis revealed the binding potential of the M-S-H matrix used in this study due to the pronounced formation of M-S-H gel and reduced content of Mg(OH)2 over time. The formation of C–S–H and M-S-H gel as the main phase for each type of cement is even more evident in samples incorporating BLAsh, indicating the interaction between both types of matrices and bamboo leaf ash. The study demonstrated that adding BLAsh to the composites significantly improved the modulus of rupture of the OPC samples (approximately 32 %), while considerably reducing water absorption for the M-S-H samples (around 50 %). Aging affected water absorption differently in OPC and M-S-H samples, with OPC showing decreased absorption and the M-S-H showing increased absorption post-aging. The study proved both types of cement suitable for producing composites that meet NBR 15498 standards for external applications. This demonstrates the technical feasibility of these compounds for their production by 3D printing.

Properties of ultra lightweight foamed concrete utilizing agro waste ashes as an alkaline activated material

In the present investigation, rice husk ash (RHA), bamboo leaf ash (BLA) and palm oil fuel ash (POFA) known as agricultural-waste materials locally available were used to produce ultra lightweight foamed concretes (ULFCs). BLA, RHA, and POFA were used as replacements for cement in ULFCs at different weight percentages of 0 %, 5 %, 10 %, 15 %, and 20 %. To achieve the target density of 350 kg/m3, cement was substituted with agricultural wastes, and a protein foaming agent was added. The properties of ULFCs were examined including, slump test, setting time, fresh density, splitting tensile, compressive and flexural strengths, thermal insulating, microstructural and transport properties, permeability and pore's structure. The experimental results demonstrated that BLA and POFA ashes significantly outperforms in terms of efficiency and improved the mechanical and transport qualities of ULFCs than RHA ash. By increasing the weight fractions of BLA, RHA, and POFA from 5 % to 20 % in ULFC mixes resulted in an improvement in slump, porosity, capillary sorption, water absorption, bulk density, intrinsic air permeability, and specific heat. The ideal results were seen in terms of compressive strength, bending strength, splitting tensile strength, and UPV when 15 % POFA and BLA, and 10 % RHA were used as substitutes for cement. The increase in weight fraction of BLA, RHA, and POFA resulted in a rise in both thermal conductivity and thermal diffusivity of ULFCs. SEM studies revealed that incorporating different agricultural wastes positively affects the pore size distribution within the microstructure decreasing with increased content of ashes related to the development of ULFCs with stronger matrix. As a result, the formulated ULFCs met the masonry strength criteria while also providing economic and environmental benefits.

Potential of Bamboo Leaf Ash for Soil Stabilization - Literature Review

Soil stabilization is an important topic in geotechnical engineering as many problematic soils were found during construction. One of the commonly used soil stabilization is cement, but it is widely known as a non-sustainable material. Much research provided the usage of industrial waste as a substitute for cement, which is then known as a supplementary cementitious material (SCM). One of the alternatives is bamboo, which has the second highest silica content after rice husk. This paper conducted a literature review on the potential of using bamboo leaf ash (BLA), which is the main composition of silica in bamboo. Various studies indicated the usage of BLA, ranging from its initial usage in concrete to its development in soil stabilization. Five studies were pointed out as the extensive research of BLA usage in Nigeria, focusing on lateritic soils. The results indicated that stabilizing lateritic soils with BLA increases the CBR values and the bearing capacity, whereas it decreases plasticity index values. Later studies followed by using other types of soils. The results are all consistent, where the shear strength of soil and CBR values increases with the usage of BLA as SCM.

Experimental investigation of Bamboo Leaf Ash and Rice Husk Ash as partial replacement cement in concrete

Construction work was mostly done in the ancient era using mudstone obtained from industry. The experimental investigation on the strength properties of M30 grade concrete, in which rice husk ash and bamboo leaf ash have largely substituted cement. One of these waste materials produced as a by-product of the rice paddy milling industry is rice husk ash (RHA). and Bamboo is used as scaffolding for the manufacture of domestic goods and construction paper. In this investigation, concrete specimens created with 0%, 5%, 10%, and 15% of the RHAsh and BLAsh as the cement replacement percentages were used to calculate the strength-related parameters such as compressive strength, splitting tensile strength, and flexural strength. Samples were examined at 7, 14, and 28 days old. Finally, it was determined that, when compared to other replacement levels, the 5% RHAsh and BLAsh replacement level in M30 grade concrete demonstrated to be greater.

Geotechnical Properties of Cement-Stabilized Lateritic Soil with Bamboo Leaf Ash in the Takie Area of Ogbomoso

Geotechnical Properties of Cement-Stabilized Lateritic Soil with Bamboo Leaf Ash in the Takie Area of Ogbomoso

Characterisation of silica derived from Bamboo Leaves Ash (Gigantochloa albociliata); preliminary results for moisture content test on rubber wood

Bamboo leaves (Gigantochloa albociliata) constitute substantial amounts of agro-waste from farming and planting activities, offering valuable biomass resources rich in silica. Employing the sol-gel method facilitates silica extraction from bamboo leaves ash (BLA), opening avenues for various applications. Characterisation of the obtained silica involves FTIR analyses providing insights into both chemical and physical properties. FTIR analysis highlights a significant chemical group in SiO2 at 3381.25 cm-1, corresponding to –OH groups of -Si-OH, indicating strong and intense OH-stretching vibrations. This research explores the potential of silica from BLA for practical use. Utilizing silica as a moisture absorbent reveals promising properties. Selection of bamboos as a source of silica is grounded in scientific rationale. Its abundant silica content, inherent in its anatomical structure, offers a readily available and prolific natural source. The rapid growth and sustainability of bamboos further align with eco-friendly practices, showcasing its minimal ecological footprint and swift regeneration compared to alternatives. Opting for bamboo as a silica source not only taps into its mineral richness but also promotes a sustainable and environmentally conscious approach. This strategic choice supports the overarching goal of encouraging green and renewable resources across various industries.

Pemanfaatan Serbuk Limbah Gypsum Sebagai Substitusi Parsial Komposisi Tanah Liat dan Abu Daun Bambu Sebagai Substitusi Parsial Komposisi Sekam Padi Terhadap Batu Bata Merah

The increase in development has increased the need for construction materials. One material often used is red bricks as a wall pair or barrier in the house. On the other hand, red bricks also have added value in terms of aesthetics. Generally, the main ingredients of bricks are clay, rice husks, and water, which are molded in a square shape, and the hardening process is through burning until it turns red and hard. By looking at the high need for bricks, this research aims to make a mixture innovation to the composition of bricks, namely adding gypsum powder waste to the composition of clay and bamboo leaf ash to the composition of rice husks. The variation used in this innovation is 2.5% gypsum powder waste in each sample of mixed red bricks, then in the variation of bamboo leaf ash by 5% and 7.5%. Like conventional red bricks, the size of red bricks is 23cm long, 10cm wide, and 5cm thick. The test results on conventional red bricks have a compressive strength value of 1.27 MPa and water absorption of 11%, while in red brick innovation, the optimal compressive strength value is in the variation of 2.5% gypsum powder waste in clay and 5% bamboo leaf ash in rice husk has a compressive strength value of 1.58 Mpa and water absorption of 9% where mixed red bricks are superior to conventional red bricks.

To Study the Strength Characteristics of Concrete Using Mineral Admixture

Aside from the combustion of fossil fuels, the cement making business emits carbon dioxide. The global cement industry accounts for around 7% of greenhouse gas emissions into the earth's atmosphere. To address the environmental impacts connected with cement manufacturing, alternative concrete binders must be developed. Another important environmental concern is the extraction of natural resources such as sand from river bottoms. As a result, substantial study into the use of cement substitutes, including several waste materials and industrial byproducts, is continuing. Bamboo leaf ash was utilised as a partial replacement for cement and fenugreek as an addition in this study, and it was compared to standard concrete. The considered bamboo leaf ash was 5%, 10%, 15% by weight of cement for M25 grade concrete and 5% of fenugreek powder as additive for every mix [1]. Additionally, an experimental investigation of the effects of using bamboo leaf ash in place of some of the cement and fenugreek powder as an additive on the performance of concrete in terms of compressive strength and flexure strength. Concrete is cast for the experimental study, and cement is partially substituted with bamboo leaf ash by weight of cement and fenugreek powder as an addition. Because the inclusion of bamboo leaf ash and fenugreek powder works as a binding ingredient in the concrete, the compressive and flexural strength increases. Finally, the compressive and flexural strengths for the combination of bamboo leaf ash as a partial replacement and fenugreek powder as an addition powder in concrete are investigated for the best results obtained from the aforementioned experiment.

Analyzing the Mechanical, Durability, and Microstructural Impact of Partial Cement Replacement with Pumice Powder and Bamboo Leaf Ash in Concrete

This study explores the physiomechanical and durability properties of C-25 concrete by partially replacing cement with blends of pumice powder (PP) and bamboo leaf ash (BLA). The combined amount of major oxides SiO2, Al2O3, and Fe2O3 in PP is 84.59%, while in BLA, it is 74.4%, classifying PP and BLA as class N and F pozzolans. Subsequently, the study examines the impact of different cement replacement percentages, emphasizing 5%, 10%, 15%, and 20% on C-25 with varying mixes of concrete: Mix-1 (100, 0, and 0), Mix-2 (90, 5, and 5), Mix-3 (85, 10, and 5), Mix-4 (85, 5, and 10), and Mix-5 (80, 10, and 10) which correspond to the proportions of OPC, VPP, and BLA used in each mix respectively and by using 1 : 2.34 : 2.68 (cement : sand : aggregate) with the water/cement ratio (w/c) of 0.491. The study’s findings indicate that as the proportion of PP and BLA increases in concrete, the workability of the mixture decreases. Moreover, on the 28th day, Mix-2 with (35.84 MPa) and Mix-3 with (33.55 MPa) met the desired mean compressive strength (33.5 MPa) required for C-25 concrete per the ACI standards. Additionally, the flexural strength of concrete produced with partial replacement of Mix-2 with a flexural strength of 3.86 MPa fulfills the minimum strength requirement of 3.5 MPa specified by the C-25 ACI standards. The PP and BLA blended concrete had lower water absorption than the control mix in Mix-2. It also improved resistance to sulfuric acid attack, and Mix-3 had the least strength reduction of 9.59%. In contrast, the control mix has a 33.34% strength reduction.

Distribution of silicon in different organ of bamboo (Gigantochloa apus (Schult. & Schult.) Kubz ex Munro)

Bamboo is one of the plants that accumulates large amounts of silicon (Si) and potentially be utilized as a source of Si. Si plays a role in reducing abiotic and biotic stresses. This study aims to analyze the Si content in ash from various bamboo plant organs (leaves, stems and roots). Bamboo was taken from Klaten Regency, Central Java. The process of making ash used manual burning, followed by ashing using a furnace at 600 °C in temperature. Bamboo plant ash was analyzed using the AOAC method and confirmed by Energy Dispersive X-Ray Fluorescence Spectrometer (ED XRF), Scanning Electron Microscope (SEM) instruments and mapping to determine the composition of the oxide and SiO2 content. Analysis using the AOAC method showed that SiO2 content in bamboo leaf ash (76.88%) was higher than bamboo stem ash (48.43%) and bamboo root ash (56.28%). The results of ED XRF, SEM analysis and mapping showed that the main composition of bamboo plant ash was SiO2. SiO2 content of bamboo leaf ash (22.89%; 80.28%) was higher than bamboo stem ash (12.36%; 39.17%) and bamboo root ash (11.82%; 61.57%), respectively. The higher Si content in bamboo leaf ash was related to Si deposition in the leaf epidermis.

Synthesis and Characterization of Silica and Silica Cellulose from Natural Materials as Matrix for Various Sensor Applications: A Mini Review

Sensors play a crucial role in various fields by enabling the detection and analysis of a wide range of substances, including hazardous substance detection, environmental and food safety monitoring, pharmaceutical industry, gas analysis, and others. Research continues to identify and develop sensor matrix materials that can increase the sensitivity, selectivity and responsiveness of sensors. Silica, an oxide mineral is a potential matrix material for sensor applications because of its unique characteristics. It has a large pore structure and modifiable pore size distribution. Silica’s stable chemical properties, high-temperature resistance and corrosion resistance make it an ideal matrix material for a wide range of sensor applications. In recent years, silica cellulose also become a potential material for sensor applications. Silica cellulose is produced by combining silica with cellulose components from natural materials, such as rice husk ash, bamboo leaf ash, rice straw ash, and other plant fibers. This article provides a comprehensive exploration of various methods of synthesis and characterization of silica and silica cellulose materials. The methods include sol-gel, acid leaching, alkaline extraction, and other techniques for extracting cellulose from natural sources. In addition, sensor applications that have been tested using this material are also discussed, including its use in detecting molecular compounds, food and environmental applications. The development of silica and silica cellulose materials based on natural materials is considered because of their sustainability. By continuing to explore the potential of these materials, it is hoped that it can make a significant contribution in the development of sensor technology that is more innovative, environmentally friendly and sustainable.

Development of Strength‐Maturity Relationship for Coral Sand Concrete Incorporating Bamboo Leaf Ash

Development of Strength‐Maturity Relationship for Coral Sand Concrete Incorporating Bamboo Leaf Ash