Article
Engineering, Environmental
Xiaoqing Dong, Bin Ye, Huiqiang Xiang, Meng Yao
Summary: Heavy metal pollution is a significant public health hazard during industrialization, with various toxicological manifestations. Conventional remediation methods for heavy metal pollution control are limited due to cost and toxic by-products. In this study, autoclaved Saccharomyces cerevisiae was used as a biosorbent for the removal of Cd2+ and Pb2+ from aqueous solutions. The results showed that S. cerevisiae had stronger competitive adsorption ability for Pb2+ compared to Cd2+. The adsorption of metal ions on S. cerevisiae followed a pseudo-second-order kinetic model and Langmuir isotherms model. Autoclaved S. cerevisiae is a rapid and favorable biosorbent for Pb2+ and Cd2+.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Environmental Sciences
Evgenia Savastru, Dumitru Bulgariu, Citalin-Ioan Zamfir, Laura Bulgariu
Summary: Yeast biomass is an effective and low-cost material for biosorption of Co(II), Zn(II), and Cu(II) ions from aqueous solution. The optimal conditions for biosorption experiments were identified and the kinetics and equilibrium data were analyzed using various models, with the Dubinin-Radushkevich isotherm and pseudo-second order model showing the best fit. Structural characteristics of metal ions play a significant role in the biosorption process.
Article
Engineering, Chemical
Fatemeh Kariminejad, Samira Baghchevan Ghadimi, Farhad Rahmani, Mohsen Haghighi, Rojiar Akbari Sene, Mohammad Ali Zazouli, Elham Sadat Heydari
Summary: The study evaluated the biosorption of Cr(VI) by biomass of dried sludge from synthetic and real industrial effluents. The prepared biosorbent showed potent adsorptive functional groups, heterogeneous characteristics, and a porous surface conducive for Cr(VI) biosorption. With key parameters tested, kinetic models analyzed, and isotherms conducted, the results confirmed high efficiency in removing Cr(VI) from wastewater.
DESALINATION AND WATER TREATMENT
(2021)
Article
Engineering, Chemical
Naima Bouchemal, Fatima Boumechhour, Imad Eddine Issolah, Hadjer Itbaren
Summary: The purpose of this study is to evaluate the possibility of using peanut shell powder (PSP) as an adsorbent for the removal of hexavalent chromium from wastewater. The study investigates the adsorption of chromium(VI) under various parameters and finds that PSP achieves 99% removal rate under optimal conditions. The surface of PSP contains functional groups suitable for biosorption and the experimental results fit well with Langmuir and Freundlich adsorption models.
DESALINATION AND WATER TREATMENT
(2023)
Article
Microbiology
Deen Dayal Giri, Maulin Shah, Neha Srivastava, Abeer Hashem, Elsayed Fathi Abd Allah, Dan Bahadur Pal
Summary: This study aimed to develop a cost-effective method for efficiently recovering hexavalent chromium from wastewater. Utilizing biosorbents derived from fruit kernels, specifically mango and jackfruit, efficient removal of metal ions was achieved. The biosorption process followed specific kinetic models, indicating potential for scalable and eco-friendly applications in water treatment.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Environmental Sciences
Patritsia M. Stathatou, Christos E. Athanasiou, Marios Tsezos, John W. Goss, L. Camron Blackburn, Filippos Tourlomousis, Andreas Mershin, Brian W. Sheldon, Nitin P. Padture, Eric M. Darling, Huajian Gao, Neil Gershenfeld
Summary: Traces of heavy metals, such as lead, in water resources pose a global threat. Conventional treatment processes are ineffective in removing low concentrations of toxic heavy metals. However, using Saccharomyces cerevisiae, it is possible to efficiently remove trace lead from water through biosorption.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Chemistry, Physical
Lacramioara Rusu, Cristina-Gabriela Grigoras, Elena Mirela Suceveanu, Andrei-Ionut Simion, Andreea Veronica Dediu Botezatu, Bogdan Istrate, Ioan Doroftei
Summary: In this study, biosorbents were developed by immobilizing Saccharomyces cerevisiae, Saccharomyces pastorianus and Saccharomyces pastorianus residual biomass on natural polymers for the removal of pharmaceuticals and dyes from water. The synthesized biosorbents showed promising removal efficiency for drugs and dyes in aqueous solutions, depending on the type of polymer used for immobilization.
Article
Biotechnology & Applied Microbiology
Masoumeh Bayat, Ehsan Salehi, Majid Mahdieh
Summary: In this study, the microalgae Chromochloris zofingiensis was used as a biosorbent to remove methylene blue from water. The optimal conditions for maximum removal were determined using response surface methodology, with a removal percentage of 97%. The biosorption process was found to be spontaneous, exothermic, and best described by the Langmuir isotherm model.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Food Science & Technology
Valeria Rampazzo Ribeiro, Giselle Maria Maciel, Mariana Millan Fachi, Roberto Pontarolo, Isabela de Andrade Arruda Fernandes, Ana Paula Stafussa, Charles Windson Isidoro Haminiuk
Summary: The bioaccessibility of bioactive compounds in white and green teas can be increased by combining tea extracts with Saccharomyces cerevisiae during the biosorption process, especially with alkaline treatments. Over 50% of phenolic compounds in both extracts were found to be biosorbed on yeast, leading to higher bioaccessibility compared to pure extracts during in vitro gastrointestinal digestion tests (38% for white tea and 61% for green tea). The results suggest the potential of this application for improving the absorption of bioactive compounds.
Article
Engineering, Environmental
Mengmei Zhang, Yunling Wen, Xiaoli Luo, Xingjie Wang, Jianlong Li, Aiping Liu, Li He, Shujuan Chen, Xiaolin Ao, Yong Yang, Likou Zou, Shuliang Liu
Summary: Cypermethrin removal by Saccharomyces cerevisiae strains YS81 and HP was found to be rapid and effective, with YS81 strain showing better performance. The yeast cells survived in simulated gastrointestinal conditions and the biosorption kinetics followed pseudo-second-order model and Langmuir model. The main yeast cell components involved in cypermethrin binding were identified as cell walls and protoplasts, with specific functional groups playing a major role in the binding process.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Water Resources
Asha Singh, Sunil Kumar, Vishal Panghal
Summary: This study evaluated the adsorption of Cr6+ from aqueous solution using dead biomass of aquatic plants Salvinia molesta and Typha latifolia. Both adsorbents showed good results for Cr6+ removal under certain conditions, and Fourier transform infrared spectroscopy and scanning electron microscopy were used for characterization and analysis.
APPLIED WATER SCIENCE
(2021)
Article
Engineering, Environmental
L. Muthulakshmi, J. B. Mathangi, R. P. Suryasankar, V. C. Padmanaban, M. Helen Kalavathy, M. R. Sanjay, Suchart Siengchin
Summary: Microbial polymeric flocculants are eco-friendly biosorbent materials used in industrial dye removal. This study evaluated the dye adsorption efficiency of a bioflocculant extracted from soil bacterium Enterobacter sp, which consists of 88% carbohydrate and 11% protein. The bioflocculant showed high efficiency in removing a cationic dye, malachite green, and the adsorption process followed Langmuir isotherm and pseudo-second-order kinetics.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Environmental Sciences
Usman Khalil, Muhammad Bilal Shakoor, Shafaqat Ali, Sajid Rashid Ahmad, Muhammad Rizwan, Abdulaziz Abdullah Alsahli, Mohammed Nasser Alyemeni
Summary: Rice husk was found to be an efficient adsorptive material for Cr(VI) removal from wastewater, with high adsorption capacity and potential environmental and economic benefits. Studies showed that physical and monolayer adsorption were the dominant mechanisms, with a fast adsorption rate of Cr(VI) onto rice husk mainly attributed to -OH and C-H groups.
Article
Chemistry, Physical
Pawel Staron, Jaroslaw Chwastowski
Summary: This study focused on obtaining a raphia-microorganism composite for lead ion removal from water solutions. The biocomposite showed higher removal capacity than raphia fibers alone, with a maximum adsorption capacity of 94.8 mg/g. Modeling indicated that the Temkin isotherm model best described the lead ion sorption, while kinetic studies supported the chemical nature of the sorption process.
Article
Chemistry, Analytical
Sheetal Kumari, Nitin Kumar Agrawal, Animesh Agarwal, Anil Kumar, Neeraj Malik, Dinesh Goyal, Vishnu D. Rajput, Tatiana Minkina, Pinki Sharma, Manoj Chandra Garg
Summary: Traditional freshwater sources have been over-abstracted, resulting in a worldwide water scarcity crisis. An investigation found that industrial wastewater samples contained high concentrations of Zn2+ and Pb2+, which are known to be highly harmful to humans and wildlife. This study used Streptomyces sp. as a biosorbent to effectively extract Zn2+ and Pb2+ from single and binary metal aqueous solutions. The biosorbent demonstrated high adsorption capacity and followed Freundlich isotherm, making it a potential alternative for removing Zn2+ and Pb2+ from aqueous solutions.
