Cleaner Materials最新文献

{"title":"Synergistic enhancement of photocatalytic efficiency and durability in CoNi-decorated Cu2O/Cu films for superior synthetic dye degradation","authors":"Setia Budi ,&nbsp;Mega Gladiani Sutrisno ,&nbsp;Tritiyatma Hadinugrahaningsih","doi":"10.1016/j.clema.2024.100250","DOIUrl":"10.1016/j.clema.2024.100250","url":null,"abstract":"<div><p>The Cu₂O/Cu emerges as a promising candidate for photocatalytic application owing to its efficient photon absorption in the visible light spectrum. However, the susceptibility of Cu₂O-based photocatalysts to self-decomposition diminishes their effectiveness. This study introduces CoNi as co-catalyst to enhance the durability of Cu₂O/Cu photocatalyst. Electrodeposition was employed to decorate the Cu₂O/Cu crystal surface with Co, Ni and CoNi. The deposition potential of CoNi was optimized to produce a high-performance photocatalyst. The utilization of CoNi co-catalyst resulted in significant enhancements in photoelectrochemical properties under light irradiation when compared to using a single Co or Ni co-catalyst, suggesting a synergistic effect between Co and Ni within the system. The enhancement is evidenced by a noteworthy increase in the photocurrent of the photocatalyst, rising from 10.24 mA/cm² to 20.81 mA/cm². In addition, the decoration of CoNi resulted in a reduction of the charge transfer resistance from 4.2 kΩ to 0.7 kΩ, while simultaneously increasing the electrochemically active surface area of the photocatalyst from 15.49 cm² to 157.69 cm². The observed modifications lead to a substantial improvement in the photocatalytic efficiency, resulting in an impressive 88 % degradation of methylene blue, which is 3.4 times higher than achieved in the absence of the co-catalyst. Moreover, there was a significant improvement in the photostability of the photocatalyst, with an increase from 16.81 % to 50.55 %. These findings demonstrate the significance of CoNi co-catalyst decoration in producing a highly active and durable photocatalyst, making it a promising candidate for efficient synthetic dyes degradation.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"12 ","pages":"Article 100250"},"PeriodicalIF":0.0,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000340/pdfft?md5=d65df964687560bb7785c9565fbda81e&pid=1-s2.0-S2772397624000340-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141033362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advance in using eco-friendly carbon-based conductive ink for printed strain sensor: A review","authors":"Nur Iffah Irdina Maizal Hairi ,&nbsp;Aliza Aini Md Ralib ,&nbsp;Anis Nurashikin Nordin ,&nbsp;Muhammad Farhan Affendi Mohamad Yunos ,&nbsp;Lim Lai Ming ,&nbsp;Lun Hao Tung ,&nbsp;Zambri Samsudin","doi":"10.1016/j.clema.2024.100248","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100248","url":null,"abstract":"<div><p>Printed electronics specifically printed strain sensor is emerging as a way forward for wearable application because of its flexibility and sustainability. Many efforts have been made to ensure the eco-friendliness of synthesized carbon-based ink to reduce the electronic waste. Carbon based fillers such as carbon nanotube have been widely used because of high electrical conductivity and excellent mechanical properties. However, the production of carbon-based fillers towards the environment still needs to be attended due to the involvement of hazardous fossil-based precursors that may harm the environment. Besides, the involvement of binders such as polyvinyl chloride (PVC), synthetic solvents and additives in the synthesis of the carbon-based conductive ink can impact serious health and environmental issues. Hence, the usage of natural precursors for green synthesis of carbon and the incorporation of biopolymer binder which are environmentally friendly and renewable need to be considered as an alternative to produce eco-friendly conductive ink. This review article presents the progress in green synthesis of the carbon-based filler, recyclability of the ink and material selection for the ink composition from biopolymer binder, solvent and additives that are eco-friendly. The performances of the carbon-based conductive ink are discussed in terms of the percolation theory and tunneling effect that form the conductive pathway in microscopic level in stretching and relaxing phenomena for printed strain sensor applications. The rheological properties of the printed ink such as viscosity, surface tension and adhesion properties to the chosen substrate also plays crucial role depending on the chosen printing technique of the printed strain sensor. The highlight of this paper is it also correlates the performance of the printed strain sensor in terms of its sensitivity using different eco-friendly carbon-based conductive ink with different printing techniques.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"12 ","pages":"Article 100248"},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000327/pdfft?md5=3b66ccd3f577186e3d9aecb61de17e00&pid=1-s2.0-S2772397624000327-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140644311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low energy synthesis of crystalline mesoporous aluminosilicate consisting of Na-P1 zeolite derived from coal fly ash","authors":"Md. Saiful Quddus ,&nbsp;Mandira Saha ,&nbsp;Md. Hasanuzzaman ,&nbsp;Nahid Sharmin ,&nbsp;Muhammad Shahriar Bashar","doi":"10.1016/j.clema.2024.100247","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100247","url":null,"abstract":"<div><p>Worldwide every year massive amount of coal fly ash is being generated as by product in the power plants which creates economic, environmental and most importantly health problems. Usually coal fly ash is used in cement production worldwide. At present, in Bangladesh, about 95 % of fly ash remains still unutilized. The alkali activation of fly ash has become a top research topic as it is possible to synthesize low cost and ecologically sound mesoporous zeolite type materials. In the present work, to the best of our knowledge, for the first time in Bangladesh, synthesis and characterization of crystalline mesoporous (H3 type hysteresis) aluminosilicate consisting of Na-P1 zeolite with a high BET specific surface area and a high pore volume from coal fly ash based on hydrothermal alkali activation technique have been successfully done. This product has versatile applications like catalysis, gas separation, water softening, water purification, gas sensing etc. The variable of alkali concentration was studied which has the notable influence on the development of the framework of the pores. The untreated coal fly ash (CFA) and the synthesized modified fly ashes (MFAs) were tested by WDS-XRF, XRD, N₂ physisorption, FE-SEM, FT-IR, XPS, EDAX-mapping, particle size analysis and other technologies. The BET specific surface area, total pore volume and average pore diameter of the CFA were only 3 m²/g, 0.01 cc/g and 6.3 nm respectively based on nitrogen gas physisorption technique, whereas, after alkali activation at a specific temperature and time, and then curing, significant and promising increased values of the said parameters of 45 m²/g, 0.11 cc/g and 9.8 nm were obtained respectively. In methylene blue dye adsorption experiment, MFA showed higher adsorption capacity (23.87 mg/g).</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"12 ","pages":"Article 100247"},"PeriodicalIF":0.0,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000315/pdfft?md5=76480ff342e06cc77b3fe29b956c4ef6&pid=1-s2.0-S2772397624000315-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140559204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physio-mechanical and micro-structural properties of cost-effective waste eggshell-based self-healing bacterial concrete","authors":"Zerihun Mamo Asamenew,&nbsp;Fikreyesus Demeke Cherkos","doi":"10.1016/j.clema.2024.100246","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100246","url":null,"abstract":"<div><p>Concrete is versatile but prone to cracking, which weakens its strength and durability. Self-healing concrete can automatically repair cracks, thereby preventing their occurrence. Previous studies have focused on improving self-healing efficiency in concrete to regulate cracks and minimize their effects. Unfortunately, the initial cost of self-healing concrete concerning calcite precipitation by bacterial actions is high. The current study implemented cost-reduction measures by synthesizing calcium lactate from waste eggshells and lactic acid using a more affordable bacterial growth medium made of yeast extract and molasses. To make self-healing concrete specimens, a mixture of OPC, sand, gravel, water, calcium lactate, and Bacillus subtilis bacterial solution was mixed directly at a concentration of (9.84 x 10⁶ and 4.56 x 10⁸) cells/mL. The study found that the workability of bacterial concrete exceeds that of conventional concrete, attributed to the addition of calcium lactate, which acts as a retarding agent and improves the mix's fluidity. Over a 28-day curing period, bacterial concrete with a dosage of 20 mL at a concentration of 9.84 x 10⁶ cells/mL enhanced compressive strength by 14.37 % and reduced water absorption by 23.05 %. This may be due to the calcite precipitation by bacteria that fills voids and micro-cracks inside the concrete matrix. The study also discovered that cracks smaller than 0.5 mm were fully healed within 14 days due to calcite formation produced by bacterial activity. Images from scanning electron microscopes and X-ray diffraction verified the existence of calcite in these cracks. Additionally, the current study highlighted cost reductions in waste eggshell-based self-healing bacterial concrete compared to other study-related findings. Overall, the study emphasizes the advantages of using bacterial self-healing concrete: eco-friendly, cost-effective, enhances workability, strength, and durability, and can autonomously repair cracks without human intervention.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"12 ","pages":"Article 100246"},"PeriodicalIF":0.0,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000303/pdfft?md5=5abb8af91922abc5e7d5a547eaf1cc31&pid=1-s2.0-S2772397624000303-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140547043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical-free thermal-acoustic panels from agricultural waste for sustainable building materials","authors":"Siwat Lawanwadeekul ,&nbsp;Nipa Jun-On ,&nbsp;Panisara Kongthavorn ,&nbsp;Teerawat Sangkas ,&nbsp;Suphaporn Daothong","doi":"10.1016/j.clema.2024.100245","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100245","url":null,"abstract":"<div><p>To address the pressing need for sustainable building materials, this study introduced an innovative and eco-friendly approach to manufacturing thermal-acoustic panels, utilizing agricultural waste with rice straw as the primary material. Paper pulp (PP) and Persea kurzii (PK) were used as non-chemical binders at ratios of 50:50, 60:40, 70:30, and 80:20. After mixing, all the samples were subjected to heat-free hydraulic compression at 5 bars to evaluate their physical, mechanical, thermal, and acoustic properties. Increasing the proportion of the binder directly impacted panel density and flexural strength while also inversely affecting porosity. The PK binder had a low thermal conductivity value of 0.040 W/mK, proving it was a good thermal insulator with a high sound absorption coefficient, especially at higher frequencies. The RSPP-4 panel had the highest noise reduction coefficient (0.51) and absorbed low frequencies, suggesting its potential for noise reduction. Microscopic analysis provided further insight into panel surface characteristics. PP exhibited a smooth surface with a continuous fiber weave that did not obscure the pores, while PK consisted of particles. The correlation between surface characteristics and acoustic performance, especially at high frequencies, underscored the intricate balance between material properties. Research results can be applied in the construction industry to develop sustainable building materials that offer superior thermal and acoustic properties. These thermal-acoustic panels can effectively utilize agricultural waste and show potential as environmentally friendly construction materials to enhance indoor comfort and acoustics in various building environments.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"12 ","pages":"Article 100245"},"PeriodicalIF":0.0,"publicationDate":"2024-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000297/pdfft?md5=fce6f40d152fb94cd431991b24c0eb03&pid=1-s2.0-S2772397624000297-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140543638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reutilization of waste cling film as a toughening agent and self-plasticizer in recycled poly(vinyl chloride) pipe for semi-rigid building material applications","authors":"Benjatham Sukkaneewat ,&nbsp;Jakkid Sanetuntikul ,&nbsp;Phisut Naknaen ,&nbsp;Kriangsak Ketpang ,&nbsp;Nawadon Petchwattana","doi":"10.1016/j.clema.2024.100244","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100244","url":null,"abstract":"<div><p>Alternative approaches are urgently needed for both reuse and recycling of poly(vinyl chloride) (PVC) waste. Herein, this study aims to recycle rigid PVC pipe by toughening and plasticizing it with waste cling film (CF). The CF has been first reused as a polymer additive by blending it with PVC from 0 to 50 wt% using a two-roll mill and compression molding machines. Both static and dynamic mechanical properties, morphology, thermal transition, thermal stability, and migration of the recycled PVC (rPVC) were investigated and compared to unmodified rigid PVC. Principal results showed that the CF significantly improved softness and toughness of rPVC. Remarkably increased elongation to 206 % (an 8-fold increase from the rPVC) with strain-hardening event was obtained by utilizing 50 %wt of CF, while tensile and flexural strength decreased owing to the softening effect of CF. There was the strong correlation between microstructure and static mechanical properties. The wire drawing morphology of the toughest rPVC indicated the toughening mechanism of CF <em>via</em> the shear banding behavior, which was inside proposed. A glass transition temperature reduction of 35 ^°C was achieved. Despite the continued migration of plasticizer in the CF modified rPVC, volatilization was diminished across all recycled formulations, leading to comparable thermal stability of the rPVCs with unmodified PVC under typical processing temperatures. According to these findings, the potential capabilities of the CF as the toughening agent and self-plasticizer of PVC for further reutilization were confirmed. This study provides a new idea for reduction of PVC waste and evaluation of their potential applications. An alternative additive, derived from flexible PVC waste, was also explored, and introduced to the polymeric system.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"12 ","pages":"Article 100244"},"PeriodicalIF":0.0,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000285/pdfft?md5=85f82acb78c1ffde2e9a2f74ccc6138d&pid=1-s2.0-S2772397624000285-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140338931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental impact evaluation of low-carbon concrete incorporating fly ash and limestone","authors":"J. Thorne ,&nbsp;D.V. Bompa ,&nbsp;M.F. Funari ,&nbsp;N. Garcia-Troncoso","doi":"10.1016/j.clema.2024.100242","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100242","url":null,"abstract":"<div><p>This work examines the environmental impact of low-carbon concrete that incorporates supplementary cementitious materials (SCMs). After reviewing near-zero carbon SCMs and low-carbon concrete, a life cycle assessment (LCA) was undertaken for concrete mix designs with normal-to-high compressive strengths, incorporating limestone and fly ash as cement replacements. The analysis includes relevant region-specific life cycle inventory parameters for raw materials, energy production, and transportation. A comparative assessment between embodied carbon emissions and the material mechanical performance is then made. The results of this paper indicate that incorporating limestone and fly ash in concrete can reduce carbon emissions, yet at a proportional decrease in mechanical properties compared to conventional cement concrete. The combination of cement and fly ash produced, on average, a higher strength concrete by 20.5% and lower CO₂-eq values by 21.1% when compared to limestone cement blends. The CO₂-eq emissions associated with transportation of the main constituents for concrete production were on average below 4% of the total CO₂-eq per mix. In addition to eco-mechanical quantitative assessments, the study offers insights and recommendations for the development of concrete materials considering global resource availability of near-zero carbon concrete constituents.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"12 ","pages":"Article 100242"},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000261/pdfft?md5=d5a254dfb12f4ca621bf6593bcab02e6&pid=1-s2.0-S2772397624000261-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140338661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extraction of sand from the complex matrix of coal mining dump waste: A sustainable approach in Indian context","authors":"Ramesh D. Dod ,&nbsp;Sanskar S. Dhodare ,&nbsp;Jayant Bhandari ,&nbsp;Shreyash Lalwani","doi":"10.1016/j.clema.2024.100243","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100243","url":null,"abstract":"<div><p>Dump waste generated by open cast coal mining industry is a significant global source of environmental pollution, land degradation and possesses threats to the environmental sustainability. After conducting pilot study, experimental investigations were conducted to study the reuse of waste rocks coming from mining as fine aggregates as a possible replacement of river sand. Physical, chemical and mechanical tests have been carried out in order to analyze in detail the interaction whether extracted sand is suitable in construction sector or not. The present study focuses on utilizing the overburden of the Sasti open cast coal mine of Western Coal Limited in the Chandrapur District of Maharashtra state, India for extraction of sand. Extracted sand contains minerals mainly quartz, alumina, and satisfies the prescribed permissible limit as per the Indian coal provisions for its use in construction work and observed to be equivalent to river sand. The compressive strength obtained with extracted OB sand after 28 days of curing was 29.294 MPa as compared to 33.153 MPa for the river sand for M25 grade of concrete. The focus of the study is on the reclaimed sand and its possible usages and not on the other components like clay of dump waste.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"12 ","pages":"Article 100243"},"PeriodicalIF":0.0,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000273/pdfft?md5=78f078660dfc16cde9eb364011356a71&pid=1-s2.0-S2772397624000273-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140338932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green engineered cementitious composites with enhanced tensile and flexural properties at elevated temperatures","authors":"S. Rawat ,&nbsp;C.K. Lee ,&nbsp;Y.X. Zhang","doi":"10.1016/j.clema.2024.100240","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100240","url":null,"abstract":"<div><p>This study provides new insights in the design of green hybrid polyethylene (PE)-steel fibre reinforced high strength engineered cementitious composite (HSECC) with superior tensile and flexural strength at both ambient and elevated temperatures. Blends of high volume of ground granulated blast furnace slag (GGBFS), dolomite powder and fly ash were utilized to achieve a 60 % cement replacement for the HSECC mixes. These mixes were then exposed to 20–600 °C and a total of 210 specimens were tested to assess their residual tensile stress–strain behaviour, flexural load–displacement response, and toughness. Results indicate that high volume of GGBFS can be very effective in limiting the surface damage and retaining high strength at elevated temperatures. A combination of 1.5 % PE-0.75 % steel with quaternary blend of GGBFS, dolomite and fly ash demonstrated at least 60 % and 40 % retention in tensile and flexural strength at 600 °C, respectively. This was significantly better than the strength of the traditional control silica fume mix considered in this study as well as results reported in many previous literatures on HSECC. Microstructural examination was further conducted to understand the mechanism of fibre deterioration and justify the resulting change in pseudo-hardening behaviour with temperature rise. Findings obtained in this study clearly demonstrated the effectiveness of PE-steel fibre hybridisation at elevated temperature and confirmed that with right binder selection, superior tensile and flexural performance can be achieved even with a very high cement replacement level.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"12 ","pages":"Article 100240"},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000248/pdfft?md5=a28ef04ded6b4b63617138b3878e5f10&pid=1-s2.0-S2772397624000248-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140179770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-Wood paper from coffee pulp Waste: How its performance as coffee filter","authors":"Raden Reza Rizkiansyah ,&nbsp;Yati Mardiyati ,&nbsp;Arief Hariyanto ,&nbsp;Steven Steven ,&nbsp;Tatacipta Dirgantara","doi":"10.1016/j.clema.2024.100241","DOIUrl":"https://doi.org/10.1016/j.clema.2024.100241","url":null,"abstract":"<div><p>Coffee pulp waste was having potential to be used as a source of non-wood cellulose for papermaking because of its abundance, considerable fraction of cellulose content, and low economic value. In this study, the isolated cellulosic fiber from coffee pulp waste was prepared into paper with the specific purpose of filter for coffee, with the aim as an effort to develop economic value and potential alternative utilization to reduce the environmental impact of coffee pulp waste accumulation, besides suggesting alternative non-wood cellulose source for coffee filter paper. The effect of extraction process repetition using 3 % (w/w) sodium hydroxide was studied to evaluate its effectiveness in removing the non-cellulosic content of coffee pulp, especially lignin, which could damage the taste of coffee. The physical and mechanical properties and water flow ability of coffee pulp filter paper (CPFP) were conducted to evaluate its characteristics and performance. The result showed that three times repetitions of alkali treatment to coffee pulp produced similar lignocellulosic content quality to the commercial wood-based coffee filter paper, with cellulose fraction reaching 86.67 % and residual lignin around 5.39 %. The coffee pulp-based filter paper made from three times repetition of alkali-treated coffee pulp has comparable tensile strength and excellent folding resistance compared to commercial filter paper, which reached around 526 ± 198.4 N/m and 1 df, respectively. The coffee pulp-based filter paper also demonstrated could withstand discharged through by boiling water without breaking. According to the resulting performance of CPFP, coffee pulp waste is promising to be further developed as an alternative non-wood resource for coffee filter paper manufacturing.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"12 ","pages":"Article 100241"},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S277239762400025X/pdfft?md5=3069a7c21d4b6b3803e3d17263591802&pid=1-s2.0-S277239762400025X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140190837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}