Article
Multidisciplinary Sciences
Nitish Semwal, Divya Mahar, Manjunath Chatti, Anirban Dandapat, Mahesh Chandra Arya
Summary: In this study, Ag-Cu-CeO2 nanocomposites were synthesized and investigated as adsorbents for the removal of Congo Red dye from water. The 15:15:70 composition of the nanocomposites showed the highest adsorption capacity and removal rate, and exhibited excellent performance under different conditions. The results indicate that Ag-Cu-CeO2 nanocomposites have great potential as effective and eco-friendly adsorbents for the removal of Congo Red dye from water.
Article
Environmental Sciences
Carina D. Schonsee, Felix E. Wettstein, Thomas D. Bucheli
Summary: This study investigated the sorption behavior of 52 major phytotoxin compounds on kaolinite and montmorillonite clay minerals, revealing significant cooperative sorption of certain cationic phytotoxins within a limited concentration range. The results suggest that clay minerals have the potential to decrease the environmental mobility of cationic phytotoxins in soils.
ENVIRONMENTAL SCIENCES EUROPE
(2021)
Article
Materials Science, Multidisciplinary
Ramesh Vinayagam, Sandhya Kandati, Gokulakrishnan Murugesan, Louella Concepta Goveas, Aishwarya Baliga, Shraddha Pai, Thivaharan Varadavenkatesan, K. Kaviyarasu, Raja Selvaraj
Summary: Hydroxyapatite nanoparticles (HAp NPs) were synthesized using Muntingia calabura leaf extract and eggshell waste. The synthesized HAp NPs were irregular rod-like in shape and showed the formation of hydroxyapatite. XRD and TGA studies confirmed their polycrystalline nature and high thermostability. The coated plant phytochemicals onto HAp NPs were stable according to FTIR analysis. The optimized adsorption of Congo red using HAp NPs showed high efficiency, following a pseudo-secondorder model and Freundlich isotherm indicating chemical adsorption. Thermodynamic studies suggested that the adsorption process was feasible, exothermic, and spontaneous. The maximum adsorption capacity of HAp NPs was superior to other reported adsorbents. The results indicate that the synthesized HAp NPs have great potential in developing novel adsorbents for dye removal from wastewater streams.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Chemical
Muhammad Imran Khan, Abdallah Shanableh, Noureddine Elboughdiri, Suryyia Manzoor, Sidra Mubeen, Aziz Ur Rehman
Summary: This study investigated the use of modified rice husk (MRH) as an efficient adsorbent for the removal of Congo red (CR) dye from aqueous solution. The results showed that CR adsorbed onto MRH followed the Freundlich isotherm and the adsorption process was exothermic. The maximum adsorption capacity of MRH for CR was found to be 10.13 mg/g.
DESALINATION AND WATER TREATMENT
(2022)
Article
Chemistry, Analytical
Mohammed A. Al-Anber, Wala Al-Qaisi, Idrees F. Al-Momani, Dinara Sobola, Ahmed K. Hijazi, Marwan S. Mousa, Mazen A. Madanat
Summary: In this study, silica gel nanoparticles (SGNPs) were successfully prepared and found to have high efficiency in capturing hexavalent uranium (VI) ions. The maximum efficiency of SGNPs for adsorbing UO22+ ions was found to be 99% under certain conditions, in accordance with the Freundlich isotherm model and pseudo-second-order kinetic model.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Engineering, Chemical
Bhanuka P. K. Ekanayake, H. E. Darshi Tharika, A. D. L. Chandani Perera, Nilwala Kottegoda
Summary: Activated coconut coir showed high efficacy in removing Cd(II) from aqueous solutions, achieving rapid adsorption equilibrium within 10 minutes. The maximum Cd(II) adsorption capacity of ACC was found to be 45.02 mg g(-1).
DESALINATION AND WATER TREATMENT
(2021)
Article
Environmental Sciences
Sorth Ansari, Naveed Ahmed, Rasool Bux Mahar, Zeeshan Khatri, Muzamil Khatri
Summary: The research focuses on using zein/nylon-6 nanofiber membrane for Cr(VI) adsorption, showing promising results in terms of adsorption capacity under optimized experimental parameters. The composite membrane demonstrated good stability and effectiveness in removing chromium pollutants, with potential applications in environmental remediation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Metallurgy & Metallurgical Engineering
Barsharani Priyadarshini, Tanaswini Patra, Tapas Ranjan Sahoo
Summary: MgO nanoparticles in cubic phase synthesized by microwave-assisted combustion demonstrated high efficiency in removing toxic dyes, with maximum removal efficiency achieved at specific conditions. Thermodynamic parameters and isotherm analysis provided insight into the adsorption mechanism, while kinetic data revealed a pseudo 2nd order rate for the process.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Multidisciplinary Sciences
Asmaa Ragab Dryaz, Mohamed Shaban, Hamad AlMohamadi, Khulood A. Abu Al-Ola, Ahmed Hamd, N. K. Soliman, Sayed A. Ahmed
Summary: The study investigated the use of a zeolite-algae composite for removing congo red dye from industrial wastewater, showing higher efficiency than zeolite alone. Computational and experimental results demonstrated the energetic favorability of adsorption and the effectiveness of the composite at low dye concentrations. The field experiments confirmed the composite's potential for eco-friendly removal of dyes from industrial wastewater.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Soumiya Sukumar, Santhiagu Arockiasamy, Manjusha Chemmattu Moothona
Summary: Gellan gum was synthesized and employed for the decolorization of dye effluent. The adsorption capacity of GG-MgO nanoparticles for malachite green dye was investigated. The physio-chemical characteristics of the GG-MgO nanoadsorbent were analyzed and optimized parameters were used to achieve maximum malachite green removal. Isotherm examinations showed Langmuir fit with the highest monolayer adsorption observed. This research demonstrates the potential of biopolymeric incorporation for enhancing nanoadsorbent adsorption capacity.
Article
Materials Science, Multidisciplinary
Rohollah Ezzati, Saeid Ezzati, Maryam Azizi
Summary: This study demonstrates the accuracy of the Langmuir adsorption rate equation in calculating the adsorption rate constant. It also investigates the derivation conditions of the pseudo-first-order and pseudo-second-order kinetics models from Langmuir kinetics.
Article
Chemistry, Analytical
Jose Alejandro Ricardo-Garcia, Yusleydi Enamorado-Horrutiner, Gerardo Rodriguez-Fuentes, Mario Simeon Pomares-Alfonso, Margarita Edelia Villanueva-Tagle
Summary: This study aimed to investigate the use of clinoptilolite zeolite as a sorbent for Ni(II) from aqueous solutions. The results showed that NaCl-treated zeolite had the highest sorption capacity and potential for improving detection limits and remediation of Ni-contaminated waters.
MICROCHEMICAL JOURNAL
(2021)
Article
Engineering, Mechanical
Mattia Cera, Marco Cirelli, Luca Colaiacovo, Pier Paolo Valentini
Summary: This paper presents a novel pseudo-rigid model for describing the elasto-kinematic behavior of circular arc flexure hinges under a pure moment. The proposed model, based on kinematic study and second-order motion invariants, accurately describes the relative motion between the connected bodies. The model has been compared with analytical formulas and finite element models, showing good accordance even for large deflections.
MECHANISM AND MACHINE THEORY
(2022)
Article
Biotechnology & Applied Microbiology
Simran Takkar, Bhawna Tyagi, Naveen Kumar, Taruna Kumari, Khushboo Iqbal, Ajit Varma, Indu Shekhar Thakur, Arti Mishra
Summary: This study reports the degradation of methyl red dye by an actinobacterium, Zhihengliuella sp. ISTPL4, which showed high degradation efficiency within 12 hours. The research also optimized the efficient decolorization by the strain and explained the adsorption and degradation pathway of the dye.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Automation & Control Systems
Ze Zhu, Zhanxia Zhu
Summary: This paper proposes a backstepping model-free adaptive control algorithm for trajectory tracking control of second-order nonlinear systems. The algorithm combines model-free adaptive control with backstepping control and achieves asymptotic and stable convergence of system velocity error. The algorithm also possesses advantages such as simple structure, model independence, and strong robustness. Simulation results on a planar two-link space robot arm model verify the efficacy of the algorithm in achieving trajectory tracking control.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2023)