An Optical–Electrical Decoupling Strategy for Fabricating Wood‐Waste‐Derived Laser‐Driven Diffusers for Specialized Lighting Inspired by Atmospheric Sunlight Scattering

The capabilities use of wood waste in the Ekaterinburg city, generated during the felling of trees and sanitation in the care of green plantations in the streets, parks, squares, forest parks was investigated in this study. In the cities at the moment, all the wood, that is removed from city streets turns into waste completely. Wood waste is brought to the landfill of solid household waste, and moreover sorting and evaluation of the quantitative composition of wood waste is not carried out. Several technical solutions that are used in different countries have been proposed for the energy use of wood waste: heat and electrical energy generation, liquid and solid biofuel production. An estimation of the energy potential of the city wood waste was made, for total and for produced heat and electrical energy based on modern engineering developments. According to our estimates total energy potential of wood waste in the city measure up more 340 thousand GJ per year.

This study is development research investigating how geometric products can be made from wood waste materials and used to foster artistic expression and imagination in early childhood. Art is an important development in the early childhood. This study uses the Analysis, Design, Development, Implementation and Evaluation (ADDIE) model development approach. The subjects of this study were kindergarten children in a special region of Yogyakarta. The goal of this study is to produce geometric products from wood waste. These products are in the form of means of transportation such as pedicabs, planes, bicycles, motorcycles, boats, and locomotives. The art of transportation. The use of wood waste is for artistic expression and imagination when children use colors according to what they want. These colors represent a form of children’s exploration of pouring art as a means of transportation.

The purpose of this paper is to investigate the perspective of using wood waste, especially the one that resulted from the construction and demolition activities, to produce sustainable bioenergy. The context of this research is characterized by a more accelerated need for development, a growing need for energy to fuel all human activities, and a greater awareness of the pressure on the environment and the negative effects produced. One of the major challenges for environmental protection is the issue of mitigating CO2 emissions, and among the biggest contributors to the CO2 emissions is the construction industry. Given the current rhythm of society development, a decrease in construction activities is not possible so a solution can be better management of the waste produced in various stages. If the need for better waste management is joined with the need for more sustainable energy, then using waste to produce bioenergy seems like a good solution. This study focuses mainly on wood waste and to respond to the research purpose it uses bibliometric literature search, scientometric analysis, and in-depth discussions. The data were obtained by interrogating the ISI Web of Science database using the keywords “bioenergy”, “wood waste” and “construction and demolition” as search criteria. The extraction of data was done using the PRISMA method and processed with VOSviewer and Bibliometrix software. The processing of the data was done so to obtain information related to the importance of the research topic given by the number of publications, the most studied topics revealed by a keywords co-occurrence analysis and a trend topic plot, as well as the world scientific productions on the studied topics. The main results indicate a significant increase, in the last years, of the interest in the studied topics, all over the world. Wood waste is considered as a direct combustion fuel or as a raw material for components of fuels used to produce energy, as well as components for new building materials. Given the limitations of other renewable energy sources, wood biomass is a subject that must be considered more in the future. The use of wood waste as biomass for the production of bioenergy can be a very good solution that will bring the advantage of both ensuring a renewable source of energy and at the same time decreasing the impact of the building industry on the environment.

In order to reduce the impact of human activities on the environment, in 2015, the United Nations launched the 2030 Agenda for Sustainable Development, proposing 17 Sustainable Development Goals with 169 associated targets. It is well-known that the construction industry is a major contributor to global CO2 emissions, and if a solution to reduce construction activity is not possible, considering the increasing population, then other solutions must be developed to decrease their negative environmental impact. In this context, the purpose of this paper is to investigate whether the use of wood waste as a building material can be a solution to achieve the Sustainable Development Goals. The research procedure included a bibliometric literature search, a scientometric analysis and an in-depth discussion. The analysis was done with the help of the software VOSviewer and Bibliometrix; the data were extracted mainly from the ISI Web of Science database. The extraction of data was done using the PRISMA method, and thus a sample of 212 peer-reviewed journal articles was established. The main results indicate an increasing interest in this topic in the last several years, as well as a switch from considering wood waste as just a source to generate heat and energy to the use of wood waste as a building material. The main uses of wood waste as a building material are in the composition of particleboards and in various mortar and concrete mixtures. The field of wood waste has many potential directions towards future development, and if the immense treasure represented by the forests, and implicitly the wood, is used efficiently, it can be a good solution to the problem of sustainable development of society.

The paper is devoted to the study of the use of wood waste as improvers engaged in the reclamation of oil-contaminated lands using bioremediation. Wood waste can act as carriers for biological products and mulching materials that optimize the harsh climatic impact on soils cleaned from oil products. At the example of using pine sawdust of 1.0-1.5 cm fraction for biological purification from oil pollution in laboratory conditions, it is shown that the increase in oat seed germination is 6-28% compared to the introduction of a biological product by sprinkling. At the same time, it was found that fine-grained pine sawdust negatively affects bioremediation, due to accelerated decay of wood, accompanied by the release of toxic components. The use of wood waste in the reclamation of oil-contaminated Arctic lands will eliminate their expensive transportation to legal disposal or burial sites and involve them in soil restoration processes.

Abstract. Ruslim Y, Sari DR, Kristiningrum R, Purwanti E, Malik FB. 2026. Optimization of wood waste from logging concession for local communities in tropical forest in Indonesia. Asian J For 10 (1): r100106. https://doi.org/10.13057/asianjfor/r100106. Timber harvesting in selective logging in tropical forest often produces significant amount of wood wastes which arises due to technical errors in the field and inappropriate planning. Instead of being left in the forest, harvesting waste might be utilized by local community, but this optimization might need information on the classification and potential use of wood waste. This study aims to determine the amount of timber harvesting waste generated by logging concession and identify the potential utilization of wood waste for the surrounding community for subsistence and small scale commercial needs. The study was conducted at a logging concession in Berau District, East Kalimantan Province, Indonesia, with wood wastes were collected at six felling plots totalling six ha and two log landing areas (TPn). The most prevalent waste type in the felling plots was tree stump with a volume of 24.58 m3, followed by tree tip, base, buttress stump waste, broken stems, and wood knots with 22.44 m3, 21.63 m3, 4.18 m3, 3.5 m3, and 0.48 m3, respectively. The wood waste found at the landing site (TPn) was predominantly red meranti, with volume of 22.69 m3. The results of interviews to local communities indicated logging waste can be utilized for a range of applications, including the production of building materials, handicrafts, furniture, bioenergy, boats, household appliances, and traditional furniture. A study on the efficiency of wood waste from logging concessions and the legal framework surrounding its utilization is necessary to ensure that the use of wood waste by local communities remains both effective and compliant with legal regulations.

There is an increasing awareness of the negative environmental impact produced by human activity worldwide. The scope of this paper is to analyze the possibilities of the further use of wood waste as a composite building material with magnesium oxychloride cement (MOC), and to identify the environmental benefits offered by this solution. The environmental impact of improper wood waste disposal affects both aquatic and terrestrial ecosystems. Moreover, burning wood waste releases greenhouse gases into the atmosphere, causing various health problems. The interest in studying the possibilities of reusing wood waste increased significantly in recent years. The focus of the researcher shifts from considering wood waste as a burning fuel to generate heat or energy, to considering it as a component of new building materials. Combining MOC cement with wood opens the possibility of creating new composite building materials that can incorporate the environmental benefits offered by the two materials.

The wood processing production system in its activities always produces waste in the form of husks or pieces of wood. The opportunity to control wood waste can be used to heat boilers as a substitute for fuel oil. This study on the use of wood waste was carried out to assess technical, economic and environmental aspects. An assessment of the technical aspect was carried out to see the efficiency of using wood waste compared to fuel oil. Financial aspects are an important consideration in utilizing wood waste, while environmental aspects. Studies show that diesel fuel consumption is higher than wood waste fuel consumption, however boiler efficiency is higher using oil fuel compared to wood waste fuel, namely 70%: 20%. Financial analysis using NPV shows that this wood waste fueled boiler is economically feasible. From environmental aspects, it is known that fuel consumption for one year for wood waste fuel produces CO2 emissions of 1,207.36 tons, which is lower than CO2 emissions from burning diesel which is 6,808.31 tons.

World needs a new paradigm to solve deep and perilous problems of climate change, energy access and food security through radical innovation and business opportunities along with social good and financial inclusion by following Mahatma Gandhi’s philosophy of sustainability. Processed wood waste is a promising renewable energy source which can reduce India’s dependency on fossil fuels by tapping through efficient technology and thereby assuring energy security and employment opportunities along with waste utilization. Such system can further be linked and supported by exploiting marginal arable lands through bamboo plantation that sequesters CO2 and fix carbon in form of biomass. On this concept, case studies on 120 tons/day capacity wood waste pelleting plant and 120 acres Bamboo plantation in Gujarat, India, have been presented. The pellet plant is the only ENPlus European standards certified facility in India and Southern Asia that utilizes wood wastes like chips and saw dust from wood processing industries. Pelletized wood waste replaces 1.17 times Indian coal along with reduction in GHG emission by 1.78 kg of CO2-eq/kg of pellets. In order to capitalize on marginal lands, high-biomass bamboo, yielding 20–25 tones/acre, have been developed and planted in 120 acre as captive farming and agroforestry model at Aravali district of North Gujarat, India. The Bamboo, from otherwise unused land, can support handicraft and incense stick industry, opening additional occupational avenues and women empowerment in rural areas. Bamboo waste from handicraft industries can further be utilized for bioenergy projects, sequestering additional 20–25 tons of CO2/acre-year.

We evaluated soil conditions of rehabilitated log landings in the Interior Douglas-fir biogeoclimatic zone of British Columbia during the first 3 years after treatment and the growth of lodgepole pine ( Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) on these log landings over 8 years. Rehabilitation treatments included combinations of tillage and the addition of either stockpiled topsoil or one of three organic amendments: hog fuel, sort-yard waste, and a wood waste – biosolids compost. The woody amendments were either applied as a surface mulch or incorporated into the soil after tillage. Tillage and addition of wood waste reduced soil bulk density and increased carbon content. Daytime soil temperatures in summer were lower under a hog fuel mulch than for the other treatments. The plots receiving hog fuel also had higher soil moisture content. One year after treatment, soil mechanical resistance for untreated soils, and those that were simply tilled, exceeded 2500 kPa for much of the growing season. Plots receiving wood waste had lower mechanical resistance. Use of wood waste in rehabilitation improved soil conditions and contributed to improved survival rates for planted lodgepole pine seedlings. Height growth after 8 years was not significantly affected by the treatments.

This article is about community empowerment in deviating wood waste into Wall Décor Flower crafts. This community empowerment is carried out in the Community of People Suffering from TBC, which is organized into a community called Omah (TBC). This community is located in the West Metro area of Metro Lampung City. This mentoring program is for the community to gain skills and theoretical understanding in processing wood waste to become wall decor flower crafts. In addition, wood wastes that will be used as wall décor flower crafts will reduce waste which will actually pollute the environment, with the use of wood waste, the community will get a solution in improving the community's economy. The focus of this article's study is How to Empower the Community through Devisivying Wood Waste into Wall Décor Flower Crafts in the Omah TIBI (TBC) Community in West Metro District? The service research method or strategy used in this program is the Asset-Based Community Development (ABCD) method. The ABCD method is a community service approach with an orientation so that people have the power to recognize and utilize all their strengths and assets for the good of the community.

The aim of the article is to present the energetic use of wood waste from fruit trees on the example of an agritourism farm. Biomass from wood waste can be obtained in agritourism farms for heating buildings as fuel. The authors of the study conducted research on the use of wood waste from fruit trees as an energy source. The examined material in the form of wood came from the Okopy – Podlasie province. In an agritourism farm, about 100 kg of biomass with a spatial density of about 54 kg/m3 were acquired during the forest stand maintenance cuts.

East Mareje Village with forest potential and the beauty of natural scenery and hills that have been given by God in this village, as the initial foundation carried out by the East Mareje village government to build and develop a tourist attraction in this case is the Embung Pandan Wangi area which is located in the hills of Mareje Village East. The number of dead trees in the Embung Pandan Wangi area has not been able to be utilized optimally by residents so that they are left lying around in the tourist attraction area. This is one of the concerns of the East Mareje village head in developing the natural potential of his village. The method used in this service is to provide guidance in supporting supporting facilities in the tourist area of ​​​​the pandan fragrant reservoir and training on the use of wood waste to increase the creativity of residents. The results of the implementation of service activities that have been carried out are several things that have been achieved, including: 1) Provide guidance to the people of East Mareje Village regarding the development of infrastructure facilities at the Embung Pandan Wangi tourism object by utilizing wood waste, 2) Conduct training to increase community creativity through the use of wood waste into handicraft products.
 

The rational use of wood waste allows the saving of forest resources and contributes to the reduction of the greenhouse effect. Three types of wood waste were used in this work: packaging (W), demolition and furniture construction (PLY), and door production (DW). The work performed an analysis of the granulometric composition of the wood waste and assessed the size, shape, and composition of the wood particles. The particle size was in the range of 0–20 mm, but the quantitative proportion of particles of different sizes in waste of different nature and shape was different. All wood particles were thermochemically treated to reduce the amount of dust and soluble particles and to increase the surface roughness of the wood particles to ensure better adhesion parameters with the binder. The binder used was biopolyurethane. Engineered wood composites (EWC) were formed from biopolyurethane and wood waste in a 50:50 ratio to evaluate compressive and bending strength. The strength values showed that all wastes were suitable for forming composites, but the size of the particles affected the magnitude of these values. The highest compressive stress of 11.7 MPa was obtained from composites using 0–5 mm PLY waste, while the lowest stress of 5.2 MPa was obtained from 0–20 mm W waste. In this case, the size of the wood waste particles affected not only the compressive stress but also the density of the composite. The analysis of the composite densities showed that 84.1% of the variation in the total density values was determined by the sample fraction, particle length-width ratio, angularity and sharpness and 15.9% by other factors that were not evaluated. For flexural strength, particle size and nature did not show a clear tendency, and values ranged from 7.2 to 11.5 MPa. The thermochemical treatment method of the wood particles had no or only a slight effect on the strength characteristics of the engineered wood composite.

The use of waste wood for road light pavements is essential for environmental and economic sustainability.The paper investigates the mechanical performance of pavements built with waste wood elements discarded from Sardinia manufacture (Italy). Without structural value, mainly Sardinian wood is used for combustion and heating due to the characteristics of dimensional irregularity, non-homogeneity, and the presence of defects. Even small urban and forest furniture comes from foreign markets. Landscape reasons, emissions reduction, and environmental integration with the local context could encourage its use if reliable techniques are available.The study first analyzed the structural response of a portion of pavement made with waste wood bricks (pine and Eucalyptus). Subsequently, a Finite Element simulation of the pavement has been validated with the tests’ results. The experimental pavement was created with Interlocked Block Pavement (IBP) technique, using brick elements 13 × 6 × 10 cm. The behavior of the pavement was analyzed in situ with dynamic deflection tests using the Falling Weight Deflectometer test (FWD). Further tests performed in the laboratory investigated the friction of the wood pavement surface. The simulation results show that the wooden pavement elements do not differ substantially from the classic concrete IBP and HMA cracked pavement. The mean deflections are greater than 19%, while the vertical stress on the foundation layer is equivalent. As with the classic concrete IBP, the results largely depend on the bearing capacity of the substrate and the degree of interlocking.Friction tests show good values with mean values of 53 ÷ 64 BPN. The most significant values were observed in the elements eucalyptus. The direction of the wood fibers also influences the results: about 3 points in the case of pine and over 7 points in the case of Eucalyptus. The study shows how the use of wood for the pavement with elements is sustainable and practicable due to the minor and low-traffic roads while also guaranteeing permeability and low-cost maintenance.KeywordsWood pavementForest roadReuse of waste woodFWD alternative applicationWood element pavement