Review
Environmental Sciences
N. Nirmala, V Shriniti, K. Aasresha, J. Arun, K. P. Gopinath, S. S. Dawn, A. Sheeladevi, P. Priyadharsini, Kathirvel Birindhadevi, Nguyen Thuy Lan Chi, Arivalagan Pugazhendhi
Summary: Access to clean water has reduced in recent years due to pollution and man-made activities. The adsorption method has advantages in wastewater treatment. Graphene-based adsorbents can adsorb and catalyze reactions simultaneously. Graphene aerogels are effective in removing heavy metals and dyes. Graphene composites have mesoporous and microporous structures with good adsorption efficiency.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Seema Kumari, Rahul Sharma, Nitika Thakur, Asha Kumari
Summary: The removal of water pollutants, such as methylene blue dye and heavy metals, was successfully achieved using zinc/manganese-doped nickel ferrites. The dye degradation was achieved under natural solar light illumination, and the adsorption of dye followed pseudo-first-order kinetics and Langmuir isotherm model. The doping of nickel ferrites not only increased the removal percentage of pollutants but also improved the band gap energy, pore radius, and specific surface area. Overall, the synthesized nanoparticles showed potential for efficient removal of effluents from wastewater under optimum parameters, along with recyclability, reusability, and separation under the influence of a magnetic field.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Chaamila Pathirana, Abdul M. Ziyath, Prasanna Egodawatta, Nilanthi J. G. J. Bandara, K. B. S. N. Jinadasa, Erick R. Bandala, Buddhi Wijesiri, Ashantha Goonetilleke
Summary: This study identifies a method for determining the breakthrough time of a column sorption system used in industrial water treatment. Laboratory column set-up requires significant resources, so a more resource-efficient batch experiment can be used to estimate the breakthrough time of a column system.
Article
Chemistry, Applied
Rahmat Basuki, Bambang Rusdiarso, Sri Juari Santosa, Dwi Siswanta
Summary: The magnetite-functionalized horse dung humic acid (HDHA) has been successfully prepared and applied for removing toxic Pb(II) in artificial wastewater. The adsorbent showed good stability and regeneration performance, with efficient adsorption capacity and easy handling.
ADSORPTION SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Ataollah Babakhani, Majid Sartaj
Summary: This study successfully removed cadmium from aqueous solution using Cd(II)-imprinted chitosan hydrogel beads. The synthesis was confirmed through various analyses, and the adsorption process parameters and mechanisms were determined through batch adsorption tests and isotherm investigations.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Water Resources
Theresa C. Umeh, John K. Nduka, Kovo G. Akpomie
Summary: The study measured the lead and cadmium contents in soil from a farming site in Enugu, Nigeria using atomic absorption spectrophotometer, and found that the soil can be utilized as a low cost-effective adsorbent to minimize the environmental risk impact of these metal ions. The results showed a satisfactory correlation for Langmuir model with better linear regression coefficients for both Pb2+ and Cd2+, indicating the soil's potential as an effective adsorbent.
APPLIED WATER SCIENCE
(2021)
Article
Polymer Science
David Choque-Quispe, Carlos A. Ligarda-Samanez, Betsy S. Ramos-Pacheco, Aydee M. Solano-Reynoso, Justiniano Quispe-Marcatoma, Yudith Choque-Quispe, Diego E. Peralta-Guevara, Edgar L. Martinez-Huaman, Odilon Correa-Cuba, Mery Luz Masco-Arriola, Washington Julio Lechuga-Canal, Fred Montalvo Amanca
Summary: This study introduced a novel composite material for the removal of heavy metals from wastewater. The composite, made of activated nanoclay and hydrocolloid, demonstrated a high adsorption capacity and chelating ability. Experimental results showed that the composite achieved a removal percentage of over 99% for lead, and also exhibited good performance in removing arsenic, cadmium, and zinc.
Article
Environmental Sciences
V Jayakumar, S. Govindaradjane, P. Senthil Kumar, N. Rajamohan, M. Rajasimman
Summary: This study demonstrated the feasibility of cadmium removal using green algae, Caulerpa scalpelliformis, under controlled environmental conditions. The optimized conditions for maximum cadmium uptake were determined to be pH 4.9, adsorbent mass 2.1 gL-1, and shaking speed 90 rpm. The biosorption process was found to be endothermic, with a maximum cadmium uptake of 111.11 mg g-1 achieved at optimal conditions.
ENVIRONMENTAL RESEARCH
(2021)
Review
Environmental Sciences
Sumona Show, Prasenjit Chakraborty, Bisheswar Karmakar, Gopinath Halder
Summary: The continuous discharge of ibuprofen in local water systems has become a growing concern due to its adverse environmental effects. In order to prevent further pollution, adsorption and bioremediation are considered more cost-effective and energy efficient methods for ibuprofen removal.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Mohini Singh, Mohd. Rayaz, Arti Rao
Summary: This study explores the potential of Prosopis cineraria leaf powder (PCLP) as a biosorbent for removing heavy metal ions (HMIs) from aqueous solutions. The results demonstrate that PCLP follows Langmuir isotherm for adsorption and pseudo-second-order (PSO) model for kinetics. Nonlinear regression analysis shows better fitting for equilibrium modeling, while the PSO model performs comparably to linear analysis for kinetics. PCLP shows promise as an environmentally friendly and cost-effective biosorbent for removing toxic HMIs.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2023)
Article
Environmental Sciences
Hongjie Sheng, Yuan Yin, Leilei Xiang, Ziquan Wang, Jean Damascene Harindintwali, Jinjin Cheng, Jing Ge, Leigang Zhang, Xin Jiang, Xiangyang Yu, Fang Wang
Summary: This study investigated the mechanisms of interactions between N-acyl homoserine lactones (AHLs) and two maize straw-derived biochars (MBs) with different pyrolysis temperatures. It was found that biochar had the ability to adsorb AHLs, with higher sorption capacity observed in biochar pyrolyzed at 600 degrees C. The findings suggest that biochar can be specially prepared to mediate soil processes related to microbial communication.
Article
Ecology
Sugandha Aachhera, Shatakshi Tiwari, Shubhangini Singh, Neha Nagar, Himanshi Garg, Chandra Sekhar Gahan
Summary: The natural biosorption capacity of Acacia nilotica sawdust for the removal of copper (Cu) and zinc (Zn) heavy metal ions was studied in this research. The process was optimized for factors like pH, contact time, biomass amount, and metal ion concentration. Experimental data analysis indicated that the Freundlich isotherm model showed the best fit for Zn while the Langmuir isotherm model gave a favorable fit for Cu metal ion adsorption. Both metal ions followed pseudo-second-order kinetics during the adsorption process.
Review
Chemistry, Physical
Efstathios Liakos, Despina A. Gkika, Athanasios C. Mitropoulos, Kostas A. Matis, George Z. Kyzas
Summary: This review paper examines the modern trends of sorption, focusing on the use of sorbents for removing dyes and heavy metal ions, as well as estimating cost implications. Various synthetic routes and materials were explored for their feasibility, with comparisons made on adsorption capacity and costs.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
V Jayakumar, S. Govindaradjane, M. Rajasimman
Summary: The sorption efficiency of marine green macro algae Caulerpa scalpelliformis for heavy metal zinc from aqueous and industrial wastewater was explored in this study. The characteristics of the sorbent prepared, optimum operating conditions, and equilibrium studies were investigated. Results showed that the sorption mechanism followed pseudo-second order kinetics, with the Langmuir isotherm model fitting the data well and showing a maximum uptake of 83.3 mg/g of zinc. Overall, the sorption of zinc on green biomass was found to be feasible, spontaneous, and endothermic.
SURFACES AND INTERFACES
(2021)
Article
Green & Sustainable Science & Technology
Daniel Ballesteros-Plata, Yue Zhang, Enrique Rodriguez-Castellon, Thierry Vincent, Eric Guibal
Summary: In this study, brown algal biomass residue obtained after bio-stimulant extraction was used for the removal of hazardous metals, including Ni(II), Cd(II), and La(III), from aqueous solutions. The residue showed a strong affinity for metal cations and achieved equilibrium within 180-240 min. This research demonstrates the potential valorization of industrial waste for the recovery of hazardous and strategic metal ions.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Chemistry, Multidisciplinary
Maryam Keshavarz, Rauf Foroutan, Fatemeh Papari, Laura Bulgariu, Hossein Esmaeili
Summary: The CaO/Fe(2)O(3) nanocomposite showed efficient adsorption of chromium (III) from aqueous media, with a sorption efficiency of 97.53% and a maximum adsorption capacity of 60.60 mg/g. The adsorption data best fit the pseudo-second-order kinetic model and Langmuir isotherm model. The adsorption process was spontaneous and exothermic in nature.
SEPARATION SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Cezar Doru Radu, Liliana Verestiuc, Eugen Ulea, Florin Daniel Lipsa, Vasile Vulpe, Corneliu Munteanu, Laura Bulgariu, Sorin Pasca, Camelia Tamas, Bogdan Mihnea Ciuntu, Madalina Ciocan, Ionela Sirbu, Elena Gavrilas, Ciprian Vasile Macarel, Bogdan Istrate
Summary: This study introduces the preparation and characterization of new scaffolds based on bacterial cellulose and keratin hydrogel seeded with adipose stem cells. The scaffolds showed regenerative potential and good biocompatibility after cell seeding.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
Vineet Kumar, Sushil Kumar Shahi, Luiz Fernando Romanholo Ferreira, Muhammad Bilal, Jayanta Kumar Biswas, Laura Bulgariu
Summary: The study identified the presence of refractory organic and inorganic pollutants in bio-methanated distillery effluent, which exceeded permissible limits and posed potential risks to the environment. The effluent showed phytotoxic, cytotoxic, and genotoxic effects on plants and cells, indicating serious health threats upon exposure.
ENVIRONMENTAL RESEARCH
(2021)
Article
Engineering, Environmental
Sameh Samir Ali, Haixin Jiao, Ahmed M. Mustafa, Eleni Koutra, Shimaa El-Sapagh, Michael Kornaros, Tamer Elsamahy, Maha Khalil, Laura Bulgariu, Jianzhong Sun
Summary: This study demonstrates the successful degradation of birchwood sawdust using a novel bacterial consortium SST-4, which can concurrently remove lignocellulose and creosote compounds, leading to efficient bioenergy production.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Laura Bulgariu, Daniela Ionela Fertu, Irina Gabriela Cara, Maria Gavrilescu
Summary: In this study, soy waste biomass was treated to obtain a biosorbent (Na-SW) for the removal of Pb(II), Cd(II), and Zn(II) ions. The biosorbent showed high reusability and efficiency in removing heavy metal ions from aqueous media, indicating its potential for large-scale wastewater treatment.
Article
Polymer Science
Alina-Roxana Lucaci, Dumitru Bulgariu, Laura Bulgariu
Summary: In this study, alginate extracted from marine algae biomass was used to functionalize iron oxide particles, resulting in the preparation of a new biosorbent. The obtained Alg-Fe3O4-MPs showed high biosorption capacity for Cu(II), Co(II) and Zn(II) ions. The Langmuir model was found to be the best fitted model for the equilibrium data, and biosorption kinetics followed the pseudo-second order model.
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
Daniela Ionela Fertu, Elena Niculina Dragoi, Laura Bulgariu, Silvia Curteanu, Maria Gavrilescu
Summary: This paper focuses on the modeling and optimization of the biosorption process of heavy metal ions using soybean biomass and soybean waste biomass. By applying a methodology based on Artificial Neural Networks (ANNs) and evolutionary algorithms (EAs), the authors developed optimal models for the biosorption process. The results show high accuracy and identify the input parameters that lead to optimal biosorption capacity and efficiency.
Article
Engineering, Chemical
Daniela Ionela Fertu, Laura Bulgariu, Maria Gavrilescu
Summary: This study analyzed experimental data on the biosorption of heavy metal ions from aqueous media using soybean and soybean waste biomasses through modeling and optimization. The most probable mathematical relationship was established and optimized to maximize the efficiency of biosorption, with results confirming the performance of soybean waste biomass in removing heavy metal ions from polluted water.
Article
Chemistry, Physical
Iftikhar Ahmad, Umme Farwa, Zia Ul Haq Khan, Muhammad Imran, Muhammad Shafique Khalid, Bo Zhu, Atta Rasool, Ghulam Mustafa Shah, Muhammad Tahir, Munir Ahmed, Salar Rezapour, Laura Bulgariu
Summary: This study evaluated the sorption and removal capacity of cotton stalks derived biochar (CSB) for As(III) and determined the health risk assessment of treated water. The results showed that CSB had high sorption capacity but could potentially pose health risks.
SURFACES AND INTERFACES
(2022)
Article
Environmental Sciences
Teodora Arsenie, Irina Gabriela Cara, Maria-Cristina Popescu, Iuliana Motrescu, Laura Bulgariu
Summary: This study investigates the use of rapeseed waste biomass (RWB) as a biosorbent for removing toxic metal ions from aqueous media. Experimental results suggest that RWB is an effective biosorbent for environmental decontamination processes.
Article
Engineering, Chemical
Mariana Minut, Mariana Diaconu, Mihaela Rosca, Petronela Cozma, Laura Bulgariu, Maria Gavrilescu
Summary: In this study, bacteria from the genus of Azotobacter, Bacillus and Pseudomonas were isolated from Phaseolus vulgaris roots and used as plant growth-promoting bacteria for various plants. The results showed that different bacteria had different effects on plant growth in both sterile and non-sterile soil. Bacillus had the most influence on Sinapis alba in sterile soil, while Pseudomonas had the greatest effect on root and shoot length in non-sterile soil. Azotobacter stimulated the growth of Brassica napus in non-sterile soil, while Bacillus had a positive effect on Amaranthus retroflexus. Azotobacter also promoted the growth of Rumex patientia and Panicum miliaceum, while Pseudomonas enhanced the growth of Linum usitatissimum in non-sterile soil. However, not all differences observed in plants with the selected bacteria were statistically significant compared to the control.
Article
Polymer Science
Dumitru Bulgariu, Lacramioara (Negrila) Nemes, Iftikhar Ahmad, Laura Bulgariu
Summary: The presence of high concentrations of metal ions in industrial metal coatings effluents has negative effects on the environment. To minimize their impact, it is important to reduce the concentration of metal ions before discharging the effluents. Sorption is an effective and low-cost method for reducing the concentration of metal ions. In this study, mustard waste biomass functionalized with an industrial polymeric thiocarbamate was used as a sorbent to remove Cu(II), Zn(II), and Co(II) ions from aqueous media. The results demonstrated the potential of this sorbent in treating wastewater contaminated with metal ions.
Review
Environmental Sciences
Saravanan Praveen, Josephraj Jegan, Thillainayagam Bhagavathi Pushpa, Ravindiran Gokulan, Laura Bulgariu
Summary: This review summarizes the recent research on the use of biochar as a biosorbent for the removal of organic and inorganic pollutants, focusing on the dye removal field. The characteristics of biochar and the mechanisms of biosorption have been extensively studied, and biosorption models are useful for evaluating the efficiency of biochar as a biosorbent for dye removal techniques.
Proceedings Paper
Health Care Sciences & Services
Bianca Azanfire, Laura Bulgariu
Summary: Clay material is efficient in removing Pb(II) ions from aqueous solutions, with Dubinin-Radushkevich model showing a satisfactory fit for equilibrium adsorption data. Thermodynamic parameters indicate the adsorption process is spontaneous and endothermic. The experimental results suggest that clay adsorbent is a promising alternative for removing Pb(II) ions from industrial effluents.
2021 INTERNATIONAL CONFERENCE ON E-HEALTH AND BIOENGINEERING (EHB 2021), 9TH EDITION
(2021)