Modeling methylene blue removal using magnetic chitosan carboxymethyl cellulose multiwalled carbon nanotube composite with genetic algorithms and regression techniques.

The purpose of this study was to model and optimize the removal of methylene blue using a novel magnetic chitosan-carboxymethyl cellulose/multiwalled carbon nanotubes and to identify the most significant parameters influencing the adsorption efficiency. Genetic Algorithm and other statistically advanced techniques such as Gradient Boosting Regressor, and Maximum Likelihood Estimation were used to extract the necessary process parameters and the factors that posed a major impact on the adsorption efficiency. The following metrics showed the secondary model, trained using the Gradient Boosting Regressor technique, had a slightly better accuracy of 0.

Health risk assessment of toxic elements in Kashan drinking water reservoirs using Monte Carlo simulation and sensitivity analysis.

In today's world, given the industrialization of societies and the water scarcity crisis, the issue of water resource protection has gained attention. Among water pollutants, toxic elements are among the most significant. Therefore, this study was conducted with the aim of assessing the health risk posed by exposure to toxic elements in the drinking water of Kashan, Iran.

Evaluating food contact surface and its influence on restaurant health ratings.

Controlling and maintaining the cleanliness of the working environment in restaurants is crucial. The aim of this study was to determine the level of contamination on food contact surfaces in restaurants. A total of 28 restaurants were surveyed, and 500 samples were taken from food contact surfaces that appeared clean and ready for use.

Facile fabrication of novel magnetic chitosan-alginate @ pomegranate peel extract nanocomposite for the adsorptive removal of naphthalene from aqueous solutions.

The prevalent presence of naphthalene contamination in aquatic ecosystems is a significant concern due to its carcinogenic and priority pollutant properties. This study focuses on the synthesis of magnetized chitosan/alginate/pomegranate peel extract nanocomposites (FeO/PPE/Cs-Alg), was characterized by Zeta potential, vibrating sample magnetometer (VSM), Field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) analyses. The results predicted that the successfully synthesis of Fe3O4/PPE/Cs-Alg.

Application of nanomaterials for determination and removal of polycyclic aromatic hydrocarbons in food products: A review.

Polycyclic aromatic hydrocarbons (PAHs), toxic persistent pollutants, result in adverse impacts to human being health. Among the variety contaminant remediation approaches, nanotechnology was found promising in terms of its efficiency and exceptional size-dependent properties. Nanomaterials also possess high particular surface area, rapid dissolution characteristics, high sorption, magnetic -properties and quantum confinement.

Removal of aflatoxin M in milk using magnetic laccase/MoS/chitosan nanocomposite as an efficient sorbent.

The current study tries to find the impact of the integration of laccase enzyme (Lac) onto magnetized chitosan (Cs) nanoparticles composed of molybdenum disulfide (MoS NPs) (FeO/Cs/MoS/Lac NPs) on the removal of AFM in milk samples. The FeO/Cs/MoS/Lac NPs were characterized by FT-IR, XRD, BET, TEM, FESEM, EDS, PSA, and VSM analysis. The cytotoxic activity of the synthesized nanoparticles in different concentrations was evaluated using the MTT method.

The spinning disc reactor for photocatalytic degradation: A systematic review.

In recent years, the use of a horizontal spinning disc reactor (SDR) as a photocatalytic reactor for the degradation of various pollutants in aqueous solutions has increased. This study was searched based on the PRISMA method. Two autonomous researchers carried out for the relevant studies using Scopus, Web of Science (WOS), and Science Direct databases.

Employing a magnetic chitosan/molybdenum disulfide nanocomposite for efficiently removing polycyclic aromatic hydrocarbons from milk samples.

This study aimed to develop a highly efficient nanocomposite composed of magnetic chitosan/molybdenum disulfide (CS/MoS/FeO) for the removal of three polycyclic aromatic hydrocarbons (PAHs)-pyrene, anthracene, and phenanthrene. Novelty was introduced through the innovative synthesis procedure and the utilization of magnetic properties for enhanced adsorption capabilities. Additionally, the greenness of chitosan as a sorbent component was emphasized, highlighting its biodegradability and low environmental impact compared to traditional sorbents.

Evaluating and modeling the efficacy of for the phytoremediation of petroleum compounds in crude oil-contaminated soil.

This study focused on using for phytoremediation to eliminate total petroleum hydrocarbons (TPHs) and heavy metals (HMs) like cadmium (Cd), chromium (Cr), lead (Pb), and nickel (Ni) from oil-contaminated soil. Conducted over six months at a field-scale without artificial pollutants, soil samples were analyzed using gas chromatography‒mass spectrometry (GC‒MS) for TPHs and inductively coupled plasma-optical emission spectroscopy (ICP‒OES) for HMs. Results after six months revealed that plots with plants had significantly higher average removal percentages for TPHs (61.

Novel nanostructure approach for antibiotic decomposition in a spinning disc photocatalytic reactor.

Conventional wastewater treatment processes are often unable to remove antibiotics with resistant compounds and low biological degradation. The need for advanced and sustainable technologies to remove antibiotics from water sources seems essential. In this regard, the effectiveness of a spinning disc photocatalytic reactor (SDPR) equipped with a visible light-activated FeO@SiO-NH@CuO/ZnO core-shell (FSNCZ CS) thin film photocatalyst was investigated for the decomposition of amoxicillin (AMX), a representative antibiotic.

Enhanced photocatalytic degradation of amoxicillin using a spinning disc photocatalytic reactor (SDPR) with a novel FeO@void@CuO/ZnO yolk-shell thin film nanostructure.

Antibiotics are resistant compounds with low biological degradation that generally cannot be removed by conventional wastewater treatment processes. The use of yolk-shell nanostructures in spinning disc photocatalytic reactor (SDPR) enhances the removal efficiency due to their high surface-to-volume ratio and increased interaction between catalyst particles and reactants. The purpose of this study is to investigate the SDPR equipped to FeO@void@CuO/ZnO yolk-shell thin film nanostructure (FCZ YS) in the presence of visible light illumination in the photocatalytic degradation of amoxicillin (AMX) from aqueous solutions.

Ciprofloxacin degradation by catalytic activation of monopersulfate using Mn-Fe oxides: performance and mineralization.

In this work, MnO/FeO (MFO) was synthesized and used to activate monopersulfate (MPS) for the degradation of ciprofloxacin (CIP). The effect of several parameters was studied on CIP degradation. Under the optimum conditions (pH = 6.

Three-layer business model canvas (TLBMC) as a recycling support tool to achieve sustainable development goals in waste management systems.

Traditional strategies for waste management in developing countries face high-cost problems, severe pollution, limited viable data, lack of global coverage, inefficiency, and slowness. The rapid expansion of the Internet have made new opportunities in waste management, especially waste collection. Online waste management in developing countries can create a revolution and help the government and society to achieve the goals of sustainable development.

Effect of COVID-19 pandemic on medical waste management: a case study.

Covid-19 Pandemic leads to medical services for the society all over the world. The Covid-19 pandemic influence the waste management and specially medical waste management. In this study, the effect of the Covid-19 outbreak on medical waste was evaluated via assessing the solid waste generation, composition, and management status in five hospitals in Iran.

Degradation of furfural in aqueous solution using activated persulfate and peroxymonosulfate by ultrasound irradiation.

Furfural is a toxic compound that can cause many problems for human health and the environment. In this study, we addressed the degradation of furfural in aqueous solution using the activated persulfate (SPS) and peroxymonosulfate (PMS) through the ultrasonic (US) wave. Besides, the effect of various parameters (pH, oxidizing dose, initial furfural concentration, US frequency, Inorganic anions concentration, and scavenger) on SPS + US (SPS/US) and PMS + US (PMS/US) processes were examined.

Estimation of methane gas by LandGEM model from Yasuj municipal solid waste landfill, Iran.

CH has a high potential for energy production and by utilizing the proper technology, large amounts of energy can be extracted from it. This study aimed to estimate the amounts of methane emissions from the municipal solid waste landfill in Yasuj city using LandGEM software. The LandGEM model which is used for this aim is based on input data of open landfill year, land closure year, methane production rate, potential methane production capacity, and waste acceptance rate.