Cleaner Materials最新文献

{"title":"Restaurant food waste valorization by microwave-assisted hydrolysis: Optimization, typological and biochemical analysis","authors":"Payam Torabi ,&nbsp;Nasser Hamdami ,&nbsp;Nafiseh Soltanizadeh ,&nbsp;Omidvar Farhadian ,&nbsp;Alain Le-Bail","doi":"10.1016/j.clema.2024.100269","DOIUrl":"10.1016/j.clema.2024.100269","url":null,"abstract":"<div><p>Annually, a substantial volume of food waste is being released into the environment. Restaurant food waste (RFW) valorization using microwave-assisted hydrolysis (MAH) is a sustainable approach to produce fermentable sugars. However, RFW is composed of different foodstuffs with different physicochemical, nutritional, and degradation rates. This study explored the typological, chemical, and elemental analysis of RFW. Results revealed that the four main types of RFW were vegetable (33.2 %), meat (19.3 %), rice (15.2 %), and bread waste (11.0 %). The key parameters impacting the MAH of typologically sorted RFW were identified using the Plackett–Burman design (PBD). Then the central composite design (CCD) with 30 runs was used to increase reducing sugar content (RSC). The optimized condition was as follows: temperature 96.0 °C, microwave power 340 W, HCl concentration of 1.45 %, and microwave heating time 11.1 min. The derived hydrolysates were characterized for their biochemical and monosaccharide composition.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"13 ","pages":"Article 100269"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000534/pdfft?md5=e8d56f3f57b3a04bb884d79c89147ead&pid=1-s2.0-S2772397624000534-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142117519","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":"An eco-friendly approach to separate emulsified oil from water using all natural materials of chitosan and beach sand","authors":"Jayaprakash Saththasivam,&nbsp;Oluwaseun Ogunbiyi,&nbsp;Jenny Lawler,&nbsp;Zhaoyang Liu","doi":"10.1016/j.clema.2024.100270","DOIUrl":"10.1016/j.clema.2024.100270","url":null,"abstract":"<div><p>Oil-contaminated water from oil and gas exploration remains the industry’s primary waste stream. The common method of using chemical coagulation/flocculation followed by air flotation has drawbacks such as generating non-biodegradable and toxic sludge and high operational costs. This study presents an eco-friendly alternative utilizing chitosan and beach sand to remove emulsified oil from water. Chitosan acts as a biodegradable flocculant, while beach sand aids in high-density floc formation and accelerates settling velocity. This approach achieved up to 94 % oil removal efficiency and reduced settling time from 90 to 15 min by using 100 mg/L chitosan and 500 mg/L beach sand with a particle size distribution of 50–100 μm. Shorter settling time reduces capital expenditure compared to conventional methods. Additionally, using natural materials like chitosan and beach sand minimizes toxic sludge generation. This eco-friendly approach offers a promising alternative to conventional methods for treating oily wastewater.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"13 ","pages":"Article 100270"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000546/pdfft?md5=b5a1467e74392384cd49e52b1e748904&pid=1-s2.0-S2772397624000546-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142136386","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":"Corrigendum to “A review of polymer-modified asphalt binder: Modification mechanisms and mechanical properties” [Clean Mater. 12 (2024) 100255]","authors":"Qilin Yang ,&nbsp;Jiao Lin ,&nbsp;Xiaowei Wang ,&nbsp;Dawei Wang ,&nbsp;Ning Xie ,&nbsp;Xianming Shi","doi":"10.1016/j.clema.2024.100260","DOIUrl":"10.1016/j.clema.2024.100260","url":null,"abstract":"","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"13 ","pages":"Article 100260"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000443/pdfft?md5=0ea1c83cb002936fe3e569310ce6261f&pid=1-s2.0-S2772397624000443-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141700002","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":"Sustainable and environmentally friendly synthesis of ZnO semiconductor nanoparticles from Bauhinia forficata leaves extract and the study of their photocatalytic and antibacterial activity","authors":"Alejandro Villegas-Fuentes ,&nbsp;Laura Edith Castellano ,&nbsp;Alfredo Rafael Vilchis-Nestor ,&nbsp;Priscy Alfredo Luque","doi":"10.1016/j.clema.2024.100268","DOIUrl":"10.1016/j.clema.2024.100268","url":null,"abstract":"<div><p>The growing need to obtain nanomaterials has resulted in a trend to avoid environmentally harmful methodologies involving chemicals that damage ecosystems and health by searching for natural reducers and stabilizers with zero polluting impact. In this research, zinc oxide nanoparticles were synthesized following an environmentally friendly synthesis methodology by using a natural extract of <em>Bauhinia forficata</em> that, thanks to its phytochemical composition rich in organic molecules such as polyphenols and flavonoids, allows the correct formation of nanoparticles by acting as stabilizers. The results of the characterizations show the proper formation of the nanoparticles and a direct relationship between the percentage used to obtain the nanoparticles and their properties. The results obtained from XRD show a hexagonal zincite shape and crystallite sizes in the range of 22.25–31.05 nm. The appearance of a signal at ∼400 cm⁻¹ obtained from FTIR confirms the formation of the Zn-O- bond. Subsequently, the removal of different organic dyes from polluted water was analyzed using zinc oxide semiconductor nanoparticles as photocatalysts under ultraviolet light. The results show outstanding degradation of the dyes, being able to remove at least 98.0 %, 84.4 %, 94.64 %, 95.5 %, and 98.2 % for methylene blue, methyl orange, rhodamine-B, Congo red, and malachite green, respectively. Additionally, the antibacterial effect of the obtained materials against multiple pathogenic bacteria was studied. All the synthesized nanoparticle samples showed an antibacterial effect, even at low concentrations for all the analyzed pathogens. The results show the feasibility of using <em>Bauhinia forficata</em> to obtain zinc oxide nanoparticles and its multiple applications due to its improved properties.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"13 ","pages":"Article 100268"},"PeriodicalIF":0.0,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000522/pdfft?md5=18418432c6c102dcd4b53ee6112a347f&pid=1-s2.0-S2772397624000522-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142058510","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":"A review on sustainable use of recycled construction and demolition waste aggregates in pavement base and subbase layers","authors":"Zainul Abedin Khan ,&nbsp;Umashankar Balunaini ,&nbsp;Susanga Costa ,&nbsp;Nhu H.T. Nguyen","doi":"10.1016/j.clema.2024.100266","DOIUrl":"10.1016/j.clema.2024.100266","url":null,"abstract":"<div><p>In recent times, the continuous growth of construction and demolition (C&amp;D) activities have resulted in increases in the utilization of natural resources as well as global C&amp;D waste production. A major part of C&amp;D waste produced is dumped in landfills worldwide although some countries have adopted good recycling and reuse facilities to generated C&amp;D waste. Based on an extensive critical review of published literature on the topic including global C&amp;D waste recycling statistics and composition of generated wastes, this paper identifies key physical,<!--> <!-->mechanical, and geotechnical characteristics of recycled C&amp;D waste aggregates specific to use as pavement base or subbase materials. Recycled aggregates typically have sufficient CBR, abrasion resistance, compressive strength and resilient modulus in accordance with various road standard specifications, which enable their applications for pavement base and subbase layer construction. Recycled aggregates typically have higher water absorption and lower specific gravity values than virgin aggregates. Furthermore, this study evaluates the feasibility and effectiveness of recycled aggregates in pavement base and subbase layers based on the detailed laboratory investigations. Additionally, case studies involving large-volume utilization of recycled aggregates for field-scale pavement construction are presented facilitating the broader adoption of recycled materials in sustainable construction of road pavements. These studies document crucial insights into its real field performance in terms of strength, durability and longevity. Finally, authors have discussed the potential challenges, research gaps and future insights on the use of recycled aggregates in pavement construction. The use of recycled aggregates in pavement construction still has some barriers and challenges such as availability in bulk quantity especially at the field scale and absence of road standards for application, which require further research and practical developments to promote the sustainable use of these materials in the future.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"13 ","pages":"Article 100266"},"PeriodicalIF":0.0,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000509/pdfft?md5=432f7e6c3c588ec7ed7b2877dddcfc57&pid=1-s2.0-S2772397624000509-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141979004","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":"Investigation of the mechanical, microstructure, and durability properties of concrete with fine uniform and non-uniform polyethylene terephthalate (PET) aggregates","authors":"Pearpran Wattanavichien,&nbsp;Mitsuyasu Iwanami","doi":"10.1016/j.clema.2024.100267","DOIUrl":"10.1016/j.clema.2024.100267","url":null,"abstract":"<div><p>Concrete manufacturing is highly resource-intensive and is a major source of greenhouse gas emission. Accelerating depletion of natural resources such as sand, which is the primary material for aggregate in concrete manufacture is a growing problem. At the same time, the disposal of vast volumes of non-biodegradable plastic waste poses a global environmental challenge. The incorporation of aggregates derived from municipal plastic waste to substitute for sand has the potential to help address both issues, while at the same time mitigating greenhouse gas emission. This study examines the potential of municipal polyethylene terephthalate (PET) plastic waste as a fine aggregate in concrete manufacturing. The primary focus was on PET aggregates with non-uniform and uniform shapes ranging in size from 2.36 to 4.75 mm. In the concrete mixtures, 0 %, 30 %, and 50 % of the fine natural aggregate by volume were replaced with fine PET aggregate with a water to cement ratio of 0.40. The obtained results showed a reduction in compressive and splitting tensile strength when compared to control specimens. However, replacing 30 % of fine natural aggregate with PET (both uniform and non-uniform shapes) significantly improved chloride resistance by 13 % and 12 %, respectively, while also enhancing the bond between cement paste and PET particles. This study characterizes the material properties of PET concrete, which represents a promising method for reusing municipal plastic waste and mitigating environmental concerns in concrete production.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"13 ","pages":"Article 100267"},"PeriodicalIF":0.0,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000510/pdfft?md5=9247e081d078f8b76a504d6ee0393b19&pid=1-s2.0-S2772397624000510-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141952926","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":"Predictive performance assessment of recycled coarse aggregate concrete using artificial intelligence: A review","authors":"Parveen Kumari ,&nbsp;Sagar Paruthi ,&nbsp;Ahmad Alyaseen ,&nbsp;Afzal Husain Khan ,&nbsp;Alpana Jijja","doi":"10.1016/j.clema.2024.100263","DOIUrl":"10.1016/j.clema.2024.100263","url":null,"abstract":"<div><p>Recycled coarse aggregate concrete enables the creation of environmentally friendly and cost-effective mixes. It helps address the disposal problem of demolition concrete waste, meeting demand while improving product functionality and reusability. The abundance of obsolete buildings in cemeteries contributes to Construction and Demolition waste. Recycled Concrete Aggregate (RCA) from demolished structures can be utilized as aggregates, albeit with concerns about its impact on compressive strength due to absorption issues. This review aimed to study and develop the different Artificial Intelligence (AI) model for the prediction of the compressive strength of concrete with varying RCA content and natural coarse aggregate content as input parameters while compressive strength as output parameter. The range of the input parameters is 0 % to 100 % while the range output parameter is 28 MPa to 70.3 MPa. Experimental data from literature articles used to train and validate the model development. Engineers and researchers can utilize these models to predict compressive strength by changing the input parameters. XGBoost Regression Model performed well with R² 0.93594 followed by Random Forest Model with R² 0.92766, and Gradient Boosting Model with R² 0.90616 respectively. Ridge Regression, Lasso Regression, and Linear Regression Models were not performed well in predicting the compressive strength of RCA concrete with R² 0.57657, 0.57558, 0.57675 respectively. ANN also performed significant in prediction of RCAC compressive strength with R² 0.8039. Future research could focus on optimizing the mechanical properties of concrete containing RCA using AI models. Furthermore, the study extends its analysis to explore the application of AI in predicting the strength of various types of concrete, highlighting the versatility and potential of AI-driven approaches in enhancing concrete mix design.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"13 ","pages":"Article 100263"},"PeriodicalIF":0.0,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000479/pdfft?md5=87db1fd8230120c69c7a10eb527947f6&pid=1-s2.0-S2772397624000479-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141950626","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":"Utilizing Na2CO3-activated waste materials for sustainable wind and rainfall erosion control","authors":"Alireza Komaei,&nbsp;Mahdis Yadollah-Roudbari,&nbsp;Seyed Mohammad Fattahi","doi":"10.1016/j.clema.2024.100264","DOIUrl":"10.1016/j.clema.2024.100264","url":null,"abstract":"<div><p>Soil erosion poses a significant challenge to environmental management, threatening ecosystem health and sustainable development. Urgent action is required to implement effective erosion control measures within comprehensive environmental management strategies. This study investigates the effectiveness of sand crusts induced by Na₂CO₃-activated materials in mitigating soil erosion during various rainfall and windstorm events. The study evaluates the erodibility of Na₂CO₃-activated crusts under varying wind speeds (30, 60, 90, and 120 km/h) and rainfall intensities (30, 60, 90, and 120 mm/h) across 1 to 15 events. Surface strength is measured using penetrometer tests, and the microstructure of the formed crusts is examined through X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and energy-dispersive X-ray spectroscopy (EDS). The results underscore the effectiveness of Na₂CO₃-activated crusts in erosion control, with treated soil showing significantly reduced erosion compared to untreated soil under both wind and rainfall conditions. Penetrometer tests revealed a significant increase in surface strength, and microstructural analysis identified the formation of albite, anorthite, and brucite crystals, as well as various forms of calcite and portlandite phases in the treated soil. This study endorses Na₂CO₃-activated materials as a superior method for mitigating wind and rainfall erosion, highlighting their remarkable efficacy, eco-friendly properties, abundance of raw materials, straightforward implementation, and cost-effectiveness.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"13 ","pages":"Article 100264"},"PeriodicalIF":0.0,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000480/pdfft?md5=c4a3c3cf129f8bda9e3eb51485fbf826&pid=1-s2.0-S2772397624000480-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141848358","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":"Improvement of natural fiber cement composite for roofing applications through addition of waste tire rubber: An investigation of the physical, mechanical, thermal, and acoustic properties","authors":"Kanokon Hancharoen ,&nbsp;Parames Kamhangrittirong ,&nbsp;Pimsiree Suwanna","doi":"10.1016/j.clema.2024.100265","DOIUrl":"10.1016/j.clema.2024.100265","url":null,"abstract":"<div><p>In this research, a new type of natural fiber-rubber-cement (FRC) composite for roofing applications is presented. This composite was made with Portland cement, coated oil palm fibers, and modified waste tire rubber powders. The implementation of fiber coating and rubber modification methods has resulted in a more effective blending and binding of the fibers and rubber powders with the cement paste. This has notably improved the adhesion between the fibers and cement, as well as between the rubber powders and cement within the composite. The FRC composite demonstrated significantly lower water absorption and thermal conductivity, with reductions of 85% and 18%, respectively, compared to the fiber-cement (FC) composite lacking rubber powders. Additionally, the FRC composite exhibited improvements in flexural strength and noise reduction coefficient by 10% and 20%, respectively, in comparison to the FC composite. Thus, incorporating rubber powders can enhance the properties of the FC composite. Consequently, the FRC composite is proposed as a viable alternative roofing material suitable for use in energy-efficient buildings.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"13 ","pages":"Article 100265"},"PeriodicalIF":0.0,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000492/pdfft?md5=01937450bf58fc7f3e2e578f54e976c3&pid=1-s2.0-S2772397624000492-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141844585","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":"A critical review: Recent developments of natural fiber/rubber reinforced polymer composites","authors":"Dominick Wong ,&nbsp;Gio Fabito ,&nbsp;Sujan Debnath ,&nbsp;Mahmood Anwar ,&nbsp;Ian J. Davies","doi":"10.1016/j.clema.2024.100261","DOIUrl":"10.1016/j.clema.2024.100261","url":null,"abstract":"<div><p>Recent advancements in the development of low-emission materials have become a global imperative to achieve net-zero emissions in efforts to limit the effects of climate change. The materials transition agenda not only aims to substitute emission-intensive materials but also incorporates emission reduction efforts into goods and applications. Natural fiber composites have received attention from both commercial and research communities because of their inherent eco-friendliness, lower cost, and lower energy consumption during processing than their synthetic counterparts. Additionally, rubber-reinforced polymer composites have generally shown promising results, particularly in resisting sudden deformation. Although studies combining waste rubber with natural fibers in polymer composites are nascent, with limited existing literature, this area demonstrates remarkable potential for the substitution of traditional synthetic composites. Therefore, this review outlines the recent developments in polymer composites incorporating the use of natural fibers and rubber in various forms. The use of rubber as a filler has been shown to enhance tensile strength and impact performance while enhancing the surface finish, however, conflicting studies were identified. Hybridizing waste rubber and natural fibers presents a promising path to further enhance the mechanical performance of composite materials. Emphasis has been placed on the use of fillers in various forms and on their inclusion in thermoset matrices. The future outlook and research opportunities are also presented in this review.</p></div>","PeriodicalId":100254,"journal":{"name":"Cleaner Materials","volume":"13 ","pages":"Article 100261"},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772397624000455/pdfft?md5=229eaa4ce131410c9b4416aa72e5256c&pid=1-s2.0-S2772397624000455-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141851354","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}