Article
Materials Science, Textiles
Tesfamariam Teklu Gebretsadik, Amanual Hadera Tesfay, Asfaw Gebretsadik Gebru, Elias Assayehegn, Ykalo Hadush Desta, Kalayou Hiluf Gebremedhin, Hagos Gebrehiwet, Taame Berhanu Teklemedhin
Summary: This work focuses on the characterization and comparative study of agave americana and agave sisalana leaf fibers as potential alternatives to synthetic fibers in engineering applications. The physical-chemical and mechanical properties of the fibers were determined using various analytical procedures and instruments. The results indicate that both agave fibers possess unique features that make them desirable as reinforcement fibers for composite engineering, with different compositions and microstructures.
JOURNAL OF NATURAL FIBERS
(2023)
Article
Materials Science, Textiles
P. Prabhu, A. Balaji, D. Jayabalakrishnan, N. Velmurugan, P. Vimalnathan, B. Karthikeyan, V Balaji, S. Dinesh
Summary: The influence of processing parameters on thrust force and delamination during drilling of GFRP, AFRP, and A/GFRP materials were investigated. Results showed that using appropriate processing parameters (lower feed rate and suitable rotation speed) can reduce delamination and improve drilling quality.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Environmental Sciences
Ilja Vuorinne, Janne Heiskanen, Petri K. E. Pellikka
Summary: Biomass estimation is crucial for crop monitoring and carbon cycling assessments. This study successfully used Sentinel-2 multispectral satellite imagery to model leaf biomass of sisal, demonstrating the suitability of multispectral data for assessing biomass at plantation and block levels. The study also highlights the importance of spectral vegetation indices for biomass estimation.
Article
Engineering, Environmental
Yen -Lin Cho, Yu-Min Tzou, Chun-Chieh Wang, Yao-Chang Lee, Liang-Ching Hsu, Shao-Lun Liu, Afifah Assakinah, Yu-Hsien Chen, Nhu Anh Thi Than, Yu-Ting Liu, Joerg Rinklebe
Summary: Thermoacidophilic Cyanidiales have a competitive advantage in extreme metal-rich environments. Cyanidioschyzon merolae (Cm), Cyanidium caldarium (Cc), and Galdieria partita (Gp) were found to effectively remove hexavalent chromium [Cr(VI)]. Cm and Gp could remove 168.1 and 93.7 mg g-1 of Cr(VI) at pH 2.0 and 7.0, with a significant portion being reduced to trivalent chromium [Cr(III)]. The presence of Cr(OH)3 was observed and correlated with the high sorption capacity of Cm and Cc at pH 2.0. These findings suggest that Cyanidiales have potential for environmentally-friendly and sustainable remediation of Cr(VI).
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Energy & Fuels
Naushad Edayadulla, Divya Divakaran, Shanmuga Sundari Chandraraj, Malinee Sriariyanun, Indran Suyambulingam, M. R. Sanjay, Suchart Siengchin
Summary: Traditional plasticizers are harmful to the environment and health, leading to the search for biodegradable alternatives. This study examined a green plasticizer extracted from Agave sisalana and investigated its structure and performance. The results showed that this novel bioplasticizer had better qualities than traditional ones and could be suitable for applications in the bioplastics sector.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Plant Sciences
Luisa Taynara Silverio da Costa, Julia Amanda Rodrigues Fracasso, Lucas Pires Guarnier, Gustavo Reis de Brito, Daniel Baldini Fumis, Renata Aparecida de Camargo Bittencourt, Aimee Maria Guiotti, Debora de Barros Barbosa, Isabel Cristina Cherici Camargo, Edislane Barreiros de Souza, Pedro de Oliva Neto, Lucineia dos Santos
Summary: This study investigated the acid hydrolysis extract from sisal juice and found that it has a powerful anti-inflammatory effect. It can be considered as a potential new anti-inflammatory drug or a source of steroidal glucocorticoids. However, further studies are needed to determine the chemical composition of sisal juice. Furthermore, the extract showed strong reproductive toxicity in rats.
Article
Engineering, Chemical
I. M. Ahmed, A. A. Nayl
Summary: The use of mustard seeds functionalized with TOA as an adsorbent (TOA-M)-BR effectively removed Cr(VI) from sulfate media. The process followed pseudofirst-order rate and complied with Langmuir isotherm, demonstrating feasible, spontaneous, and endothermic adsorption. Operating conditions also allowed efficient separation of Cr(VI) from other fission products.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Materials Science, Multidisciplinary
Uttam Kumar Sahu, Ying Zhang, Wei Huang, Hui Ma, Sandip Mandal, Sumanta Sahu, Manoj Kumar Sahu, Raj Kishore Patel, Shengyan Pu
Summary: In this study, a tea waste/CeO2 bio-composite was synthesized and evaluated for the remediation of Cr(VI) in contaminated water. The bio-composite demonstrated high removal efficiency, with 96% of Cr(VI) being removed under optimized conditions. The material also showed good reusability, with 85% removal efficiency in the fourth consecutive cycle.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Environmental
Changwoo Kim, Seung Soo Lee, Anushree Ghosh, Junseok Lee, John D. Fortner
Summary: In this study, photoactive cetyltrimethylammonium bromide-oleic acid (CTAB-OA) bilayer coated iron oxide nanocrystals (IONCs) were synthesized and used for photo-enhanced hexavalent chromium (Cr(VI)) treatment. The CTAB layer had specific affinity for Cr(VI), while the IONC surface participated in Fe(II)/Fe(III) redox cycling. The OA layer at the coating-particle interface significantly enhanced Cr(VI) reduction through a ligand-to-metal charge transfer mechanism. The research provides a clear understanding of the physical and mechanistic properties of CTAB-OA bilayer IONCs and their efficacy for Cr(VI) treatment under UVA irradiation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Zhenhui Li, Xiaoxuan Zhang, Jinyi Chen, Xing Fang, Wenying Yuan, Junxia Yu, Xinhong Qiu
Summary: The powdered layered double hydroxide (LDH) synthesized by hydrothermal coprecipitation was compounded with sodium alginate to form microspheres (LDH-AL). The characterizations of the LDH-AL show that the microspheres were successfully prepared. The immobilization experiments of hexavalent chromium (Cr(VI)) demonstrated the effectiveness of LDH-AL microspheres in the immobilization of Cr(VI) in soil.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Genetics & Heredity
Xinli Yang, Xing Huang, Shibei Tan, Tao Chen, Xu Qin, Helong Chen, Jingen Xi, Kexian Yi
Summary: The study successfully sequenced and assembled the chloroplast genome of Agave sisalana, revealing its genome structure, gene annotation, and phylogenetic relationship with Agave americana and Agave H11648.
MITOCHONDRIAL DNA PART B-RESOURCES
(2021)
Article
Biotechnology & Applied Microbiology
Gabriel Quintanilha-Peixoto, Marina Pupke Marone, Fabio Trigo Raya, Juliana Jose, Adriele Oliveira, Paula Luize Camargos Fonseca, Luiz Marcelo Ribeiro Tome, Dener Eduardo Bortolini, Rodrigo Bentes Kato, Daniel S. Araujo, Ruth B. De-Paula, Yesid Cuesta-Astroz, Elizabeth A. A. Duarte, Fernanda Badotti, Vasco Ariston de Carvalho Azevedo, Bertram Brenig, Ana Cristina Fermino Soares, Marcelo Falsarella Carazzolle, Goncalo Amarante Guimaraes Pereira, Eric Roberto Guimaraes Rocha Aguiar, Aristoteles Goes-Neto
Summary: Aspergillus welwitschiae is a pathogenic fungus causing bole rot disease in sisal, affecting the fiber production in Brazil. Comparative genomics analysis reveals the conflicting molecular identity of this species and identifies genes potentially associated with the pathogenicity in sisal.
Article
Engineering, Environmental
Ying-heng Fei, Manzhi Li, Zhuofeng Ye, Jieyang Guan, Zhenhong Huang, Tangfu Xiao, Ping Zhang
Summary: The study found that sludge derived biochar plays an important role in the remediation of Cr(VI), but its alkalinity can inhibit the sorption process, affecting the overall removal ratio. The results suggest that sludge derived biochar removes Cr(VI) through the processes of sorption, reduction, and immobilization.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Dan Luo, Shao-zhong Hu, Ting Huang, Nan Zhang, Yan-zhou Lei, Yong Wang
Summary: This paper presents the development of an efficient, economical, and environmentally friendly monolithic adsorbent for the removal of toxic hexavalent chromium. The study successfully prepared cellulose acetate and polyethylenimine blended porous fiber membranes with high porosity using electrospinning. The adsorption behavior and eliminating mechanism of the membranes towards Cr(VI) were comprehensively explored. The maximum adsorption capacity was higher than most biomass-based adsorbents, and the membrane effectively reduced the concentration of Cr(VI) to a level much lower than the drinking water standard.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Biotechnology & Applied Microbiology
Talam E. Kibona, Debora J. Mahushi, Godlisten N. Shao
Summary: Nanostructured electrodes with large surface area derived from Agave sisalana sisal waste were prepared through carbonization and chemical activation with ZnCl2. The microstructure and composition of the as-prepared microporous carbon materials were influenced by adjusting the ZnCl2 to the carbon mass ratio. The fabricated electrodes exhibited high specific capacitances, indicating the strong potential of the carbon materials for use in high-performance supercapacitors.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2023)
Article
Chemistry, Inorganic & Nuclear
Hadjer Mamine, Hacene Bendjeffal, Abdelkrim Djebli, Toufek Metidji, Mathieu Marchivie, Guillaume Chastanet, Nacer Rebbani, Yacine Bouhedja
INORGANIC AND NANO-METAL CHEMISTRY
(2020)
Article
Chemistry, Inorganic & Nuclear
Abdelkrim Djebli, Amel Boudjemaa, Hacene Bendjeffal, Hadjer Mamine, Toufek Metidji, Hamida Bekakria, Yacine Bouhedja
INORGANIC AND NANO-METAL CHEMISTRY
(2020)
Article
Chemistry, Inorganic & Nuclear
Hamida Bekakria, Hacene Bendjeffal, Abdelkrim Djebli, Hadjer Mamine, Toufek Metidji, Zahia Benrdjem
Summary: This study focuses on the use of Fe2O3-Al2O3-Ga2O3 as a new photocatalyst for the sono-photo-Fenton degradation of Methyl violet 10B. The optimal parameters were identified through full factorial design, resulting in efficient degradation of Methyl violet 10B.
INORGANIC AND NANO-METAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Hacene Bendjeffal, Mounir Ziati, Amel Aloui, Hadjer Mamine, Toufek Metidji, Abdelkrim Djebli, Yacine Bouhedja
Summary: This study investigated the feasibility of using Algerian kaolin as an adsorbent for the removal of hydroxychloroquine from water. The optimal operating parameters were determined, and the adsorption mechanism and isotherm models were validated. The results showed that kaolin was effective in removing hydroxychloroquine.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Mourad Boukachabia, Hacene Bendjeffal, Louisa Aribi-Zouioueche, Olivier Riant, Yacine Bouhedja
Summary: The highly chemoselective protection of various aldehydes using natural kaolin as a catalyst is reported in this study. The reaction proceeds in ethanol solvent and produces the corresponding acetals with moderate to excellent yields and high chemoselectivity. The kaolin catalyst can be used on a gram scale for the reaction.
Article
Chemistry, Inorganic & Nuclear
H. Bendjeffal, H. Mamine, T. Metidji, A. Djebli, R. Diaf, Y. Bouhedja
Summary: The aim of this study was to evaluate the adsorption of phosphate ions using Punica granatum shells as a sorbent material. The PGS powder was characterized and its adsorption capacity for PO43- was evaluated. A chemometric method based on the Box-Behnken design was applied to optimize the operating factors. The best adsorption amount was obtained at specific conditions and the process followed the pseudo-second-order model with a maximum adsorbent quantity.
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
(2023)
Article
Chemistry, Physical
Meriem Ferrah, Samia Guezane-Lakoud, Hacene Bendjeffal, Rym Aissa, Mounia Merabet-Khelassi, Martial Toffano, Louisa Aribi-Zouioueche
Summary: In this study, diphenylphosphinic acid was used as a catalyst for the synthesis of alpha-aminophosphonates in a one-pot reaction. By optimizing the catalyst amount, reaction time, and medium temperature, a high-yield and environmentally friendly synthesis method was achieved.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2023)
Article
Chemistry, Physical
Salah Rahmouni, Noureddine Boukhanoufa, Issam Tifouti, Hacene Bendjeffal, Brahim Mariane
Summary: The optical properties of porous silicon films on doped 100-oriented silicon substrates prepared by electrochemical etching were studied. Photoluminescence and ellipsometry measurements were performed to investigate the effects of etching current densities and contact times. The results showed that the ellipsometry measurements were in good agreement with the photoluminescence intensity, thickness, and porosity obtained from FTIR and SEM measurements. The absorption coefficient decreased with increasing porosity, while the penetration factor increased with increasing current density. The data presented in this study are promising for the development of photovoltaic applications.
Article
Chemistry, Applied
Mourad Boukachabia, Hacene Bendjeffal, Mounia Merabet Khelassi, Olivier Riant
Summary: A statistical approach was used to optimize the acylation of l-menthol using natural kaolin as a catalyst. The main operational parameters, such as solvent volume, acyl donor amount, temperature, and catalytic rate of kaolin, were studied. The results showed that temperature, acyl donor/acceptor ratio, kaolin mass, and solvent volume were significant factors affecting the acylation process. Optimal reaction conditions were determined and validated experimentally, achieving complete conversion after 30 minutes. The environmentally friendly process was also applied to other monoterpenic alcohols, yielding acetates with 45%-90% yield.
FLAVOUR AND FRAGRANCE JOURNAL
(2023)
Article
Chemistry, Physical
Rayane Diaf, Hacene Bendjeffal, Toufek Metidji, Atef Ali Ahmed, Hadjer Mamine, Yamina Berredjem, Zhour Hattab
Summary: This study investigates the elimination behavior of hexavalent chromium from aquatic media using dry Pomegranate peel powders (PGPs). Through various techniques, the well-prepared and characterized pomegranate peels powder was found to effectively remove Cr(VI) from water media. The study also determined the optimal conditions for adsorption and found that the process follows a pseudo-second order model. Thermodynamically, the removal process is exothermic, spontaneous, and stable.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
R. Diaf, H. Bendjeffal, A. Djebli, H. Mamine, T. Metidji, H. Bekakria, Z. Hattab, Y. Bouhedja
Summary: An α-FeOOH@Luffa composite was prepared using hydrothermal method, showing good adsorption performance for removing organic dyes from wastewater.
CHEMISTRY AFRICA-A JOURNAL OF THE TUNISIAN CHEMICAL SOCIETY
(2022)
Article
Engineering, Chemical
Amel Aloui, Nouzha Bouziane, Hacene Bendjeffal, Yacine Bouhedja, Abdennour Zertal
Summary: This study focused on the removal of DPP and PAR from aqueous solutions using Luffa cylindrica fibers as a biosorbent. The biosorption process was modeled using the Redlich-Peterson isotherm, with further analysis confirming a pseudo-second-order kinetics and intraparticle diffusion mechanism. The results showed spontaneous and exothermic adsorption of DPP and PAR molecules onto the Luffa cylindrica active sites.
DESALINATION AND WATER TREATMENT
(2021)
Article
Nanoscience & Nanotechnology
Hadjer Mamine, Hacene Bendjeffal, Toufek Metidji, Abdelkrim Djebli, Nacer Rebbani, Yacine Bouhedja
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2019)
Article
Materials Science, Biomaterials
Faouzi Dahdouh, Hacene Bendjeffal, Zakaria Nouacer, Walid Moumene, Mohamed El-Hadi Zeminour, Mohamed Naous, Houria Djebar
Article
Materials Science, Multidisciplinary
Mehdi Zeggar, Hacene Bendjeffal, Hadjer Mamine, Abdelkrim Djebli, Yacine Bouhedja