Article
Polymer Science
Amina Abbaz, Sihem Arris, Gianluca Viscusi, Asma Ayat, Halima Aissaoui, Yasser Boumezough
Summary: Water pollution is a pressing issue that requires immediate attention. This study developed hydrogel beads made from sodium alginate and pomegranate fruit peels for the purpose of adsorbing Safranin O dye in aqueous solutions. The results showed that the synthesized beads had favorable adsorption properties, with maximum adsorption capacity reaching 30.769 mg/g at 293 K. The study also provided insights into the adsorption kinetics, concentration dependence, and thermodynamics of the dye adsorption process.
Article
Polymer Science
Nihal Yasir, Amir Sada Khan, Muhammad Faheem Hassan, Taleb H. Ibrahim, Mustafa I. Khamis, Paul Nancarrow
Summary: In this study, agar-alginate beads impregnated with [P-66614][Br] ionic liquid were synthesized and characterized for wastewater treatment containing low concentrations of phenolic compounds. The adsorbent showed enhanced thermal stability and porous surface. Optimum conditions for phenol removal were determined, and the adsorption process followed pseudo-second order kinetics and fitted the Freundlich isotherm model. The adsorbent could be regenerated and reused for at least four cycles without significant loss in adsorption efficiency.
Article
Engineering, Chemical
Meenu Mariam Jacob, Muthamilselvi Ponnuchamy, Ashish Kapoor, Prabhakar Sivaraman
Summary: This study investigated the removal of chlorpyrifos from aqueous systems using a composite adsorbent prepared from sugarcane bagasse-derived biochar encapsulated in alginate. The biochar alginate beads showed 86% chlorpyrifos removal under optimized conditions.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Environmental Sciences
Jung-Weon Choi, Sang-June Choi
Summary: Graphene oxide/calcium alginate-polyacrylamide beads effectively removed the antibiotic ciprofloxacin. The adsorption isotherm data fit well with the Langmuir model.
Article
Environmental Sciences
Mian Fawaz Ahmed, Muhammad Asad Abbas, Azhar Mahmood, Nasir M. Ahmad, Hifza Rasheed, Muhammad Abdul Qadir, Asad Ullah Khan, Hazim Qiblawey, Shenmin Zhu, Rehan Sadiq, Niaz Ali Khan
Summary: Contaminated water with highly hazardous metals like arsenic poses a major challenge for humanity, hybrid beads synthesized with various concentrations of zero valent iron oxide nanoparticles impregnated into a polymer of chitosan show efficient removal of arsenic through adsorption and reduction processes. These novel beads of FeCh-40 are potent candidates for the treatment of water polluted with toxic arsenic metals.
Article
Engineering, Environmental
Nurul Syazana Fuzil, Nur Hidayati Othman, Nur Ain Shazwani Roslee Ab Jamal, Ana Najwa Mustapa, Nur Hashimah Alias, 'Aqilah Dollah, Nik Raikhan Nik Him, Fauziah Marpani
Summary: This study investigated the potential of graphene oxide-alginate beads as an adsorbent for bisphenol A removal from aqueous solution. Results showed that GO-AB had better adsorption performance at neutral condition and exhibited excellent reusability in consecutive adsorption-desorption cycles.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Engineering, Chemical
Yiqun Liu, Liuke Cai, Xiaoyu Wang, Zhihao Chen, Wenzhong Yang
Summary: To address arsenic contamination in groundwater, hydrated iron oxide gel beads (CS-HFO) and iron manganese oxide gel beads (CS-FMO) adsorbents were prepared. CS-FMO adsorbent showed better adsorption performance due to rich adsorption sites and oxidation capacity. Langmuir model calculations revealed the saturation adsorption of As(V) and As(III) by CS-FMO as 26.65 mg/g and 35.96 mg/g respectively. After 10 cycles of regeneration, CS-HFO and CS-FMO demonstrated excellent sustainable arsenic removal ability. The high selectivity of CS-HFO and CS-FMO adsorbents was confirmed through competing pollutants and fixed-bed column experiments, making them promising for future application in arsenic contamination removal.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Surbhi Lilhare, Sunitha B. Mathew, Ajaya Kumar Singh, Sonia A. C. Carabineiro
Summary: CABs, AVCABs, and AVMNCABs were developed as adsorbents for Cu(II) removal from aqueous solutions. Their characteristics and adsorption properties were studied.
Article
Chemistry, Physical
Bouhadjar Boukoussa, Adel Mokhtar, Anouar El Guerdaoui, Mohammed Hachemaoui, Hassan Ouachtak, Soumia Abdelkrim, Abdelaziz Ait Addi, Soumia Babou, Bouchra Boudina, Abdelkader Bengueddach, Rachida Hamacha
Summary: This paper presents the fabrication of composite beads based on functionalized SBA-15 materials encapsulated in calcium alginate for methylene blue removal. The study found that hydrogel beads with pure SBA-15 have a negative surface, leading to a higher adsorption capacity for cationic dye.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
Sudeshna Saha, Hirakendu Basu, Manisha Venkatesh, Shweta Singh, Rakesh Kumar Singhal
Summary: For a sustainable future, new technologies and methods are needed for the recovery and recycling of electronic waste, especially with the rapid increase in the use of electrical and electronic devices. In this study, a novel method using amine-functionalized reduced graphene oxide impregnated in calcium alginate matrix was developed for the selective extraction of gold from e-waste. The method showed high efficiency and selectivity in batch sorption investigations.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Environmental Sciences
Sudan Lin, Yongzhi Xu, Chen Fu, Haifeng Zhang, Qiaoping Kong, Haoran He, Siyuan Liu, Xueqing Shi, Dandan Zhao
Summary: A novel Y2O3/SA beads with high stability and selectivity towards phosphate was synthesized and characterized. The Y2O3/SA beads exhibited excellent adsorption performance over a wide pH range and showed a high selectivity among co-existing anions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Polymer Science
A. M. Hezma, Walaa A. Shaltout, Hoda A. Kabary, Gamal S. El-Bahy, Abdelrazek B. Abdelrazzak
Summary: Alginate-zinc oxide (Alg-ZnO) biocomposite was synthesized and tested as an adsorbent for chromium ions Cr(VI) in environmental applications. The biocomposite was prepared by interaction between sodium alginate biopolymer and zinc oxide nanoparticles (ZnO-NPs). The adsorption characteristics of the synthesized Alg-ZnO biocomposite were analyzed using various techniques and isotherm models, showing favorable adsorption capacity and dominance of monolayer and physisorption.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Biotechnology & Applied Microbiology
Nevena Pantic, Radivoje Prodanovic, Karla Ilic Durdic, Natalija Polovic, Milica Spasojevic, Olivera Prodanovic
Summary: Removal of phenolic compounds from water is a major concern, with horseradish peroxidase being a commonly studied biocatalyst for this purpose. Immobilization of HRP on tyramine-alginate microbeads showed promising results in terms of phenol removal efficiency and reusability. Internal generation of hydrogen peroxide using glucose and glucose oxidase enhanced the phenol removal process with immobilized HRP.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Environmental
Ting Lv, Beigang Li
Summary: The novel magnetic sodium alginate-based biopolymer Fe3O4@SA-Fe was successfully prepared and demonstrated excellent adsorption properties and stability, suitable for efficient purification of high-concentration dye wastewater.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Chemistry, Analytical
Dianxin Li, Peng Zhang, Yiqing Yang, Yuqi Huang, Tao Li, Junwei Yang
Summary: Graphene oxide encapsulated in sodium alginate was used to prepare a composite hydrogel for U(VI) adsorption, showing a high adsorption capacity which remained above 85% after multiple desorption and reuse cycles.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
