Article
Engineering, Environmental
Charles Chinyere Dike, Leadin S. Khudur, Ibrahim Gbolahan Hakeem, Alka Rani, Esmaeil Shahsavari, Aravind Surapaneni, Kalpit Shah, Andrew S. Ball
Summary: This study investigates the effects of biosolids-derived biochar on the remediation and ecotoxicity of diesel-contaminated soil, as well as the impacts of biochar pyrolysis temperature, biochar dose, and fertiliser addition on soil remediation. The results suggest that adding biochar prepared at 900 degrees C, at a dose of 10% with 1% fertiliser, to contaminated soil can reduce the concentration of total petroleum hydrocarbons below the maximum threshold set by the EPA Victoria. Additionally, most of the biochar treatments resulted in lower soil ecotoxicity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Zhou Zhou, Xitao Liu, Jun Ma, Jun Huang, Chunye Lin, Mengchang He, Wei Ouyang
Summary: Steroid hormones in the environment have high endocrine-disrupting activity, even at low levels of exposure, attracting public attention. Excessive hormones in the soil from intensive farming can pose a potential threat to ecology and human health. Researchers have found that using vanadium oxide modified carbon nanotubes as an activator can effectively degrade 17β-estradiol in soil, suggesting the potential of this technology in removing excessive steroid hormones from soil around large-scale livestock and poultry farms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Green & Sustainable Science & Technology
Pankaj Kumar Gupta, Hassana Ibrahim Mustapha, Bhaskar Singh, Yogesh Chandra Sharma
Summary: This paper reviews the feasibility of using neat biodiesel as a biostimulator in the treatment of diesel and biodiesel blends contaminated soil and groundwater resources. It suggests that the successive bioaugmentation with neat biodiesel as a biostimulant can achieve more than 98% degradation for petroleum compounds.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Seyedeh Pegah Jalilian Ahmadkalaei, Suyin Gan, Hoon Kiat Ng, Suhaimi Abdul Talib
Summary: This study investigated the role of humic acid in Fenton reaction for the degradation of diesel in soil, finding that the impact varies depending on the molecular weight of the contaminants. Increasing humic acid dosage enhances the positive effects on total TPH degradation, with an optimal dosage of 150 mg/l. Removal efficiencies at higher pH levels depend on the molecular weight of TPH contaminants.
ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY
(2021)
Article
Environmental Sciences
Jorge Vinicius Fernandes Lima Cavalcanti, Tiago Jose Marques Fraga, Mirella de Andrade Loureiro Leite, Daniella Fartes dos Santos e Silva, Valmir Felix de Lima, Alexandre Ricardo Pereira Schuler, Clistenes Williams Araujo do Nascimento, Mauricio Alves da Motta Sobrinho
Summary: In this study, sodium percarbonate was utilized as an oxidant to treat diesel-contaminated soil, and the photo-Fenton reaction was effective in degrading polycyclic aromatic hydrocarbons. The initial concentration of Fe2+ had the most significant impact on the decrease in total organic carbon in the soil.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Zhijie Shang, Pan Xu, Zhenyu Ke, Meiling Yao, Xinxue Li
Summary: This study proposes a novel method for simultaneous diesel removal and recovery from heavily diesel-contaminated soil by washing. The experiment demonstrated high removal efficiency and recovery rate, while avoiding solution purification and complicated separation process. The treated soil is suitable for plant cultivation and the recovered diesel can be reused.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Yan Li, Annapaola Giordano, Franco Ajmone-Marsan, Elio Padoan
Summary: Lead contamination is a significant health hazard, and reducing lead mobility and bioavailability through the addition of phosphorus-containing materials can be effective. However, the effectiveness varies depending on soil type and particle size, with particular attention needed on the impact of remediation activities on fine soil particles for the environment and human health.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Arpna Kumari, Poonam Kumari, Vishnu D. Rajput, Svetlana N. Sushkova, Tatiana Minkina
Summary: This review discusses the use of metal(loid) NMs as nanosorbents for soil remediation, focusing on their effectiveness and importance in adsorbing contaminants in polluted soil.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2022)
Review
Environmental Sciences
Sabrina A. Beker, Ivan Cole, Andrew S. Ball
Summary: Water pollution caused by dyes is a serious global concern, especially in developing countries. Nanomaterials, specifically carbon dots, show promise as a water treatment technology due to their unique properties and advantages. However, there is limited research on the ecotoxicity and fate of carbon dots in the environment. This review aims to summarize recent advancements in water remediation using carbon dots, discuss important factors for optimized catalytic remediation, and critically analyze the ecotoxicity issues and environmental fate of these nanoparticles.
Review
Environmental Sciences
Motasem Y. D. Alazaiza, Ahmed Albahnasawi, Gomaa A. M. Ali, Mohammed J. K. Bashir, Nadim K. Copty, Salem S. Abu Amr, Mohammed F. M. Abushammala, Tahra Al Maskari
Summary: Nanotechnology is widely used in soil and groundwater remediation, with nanomaterials like nanoscale zero-valent iron, carbon nanotubes, and metallic nanoparticles being extensively researched for their efficiency. The combination of nanoremediation with other technologies shows promise for sustainable and environmentally-friendly soil remediation practices.
Review
Green & Sustainable Science & Technology
Mehul Tiwari, Divya Bajpai Tripathy
Summary: This review provides a comprehensive analysis of the effectiveness of surfactants in enhancing the remediation of contaminated soils. The study examines recent and older research on the use of surfactants for soil reclamation purposes and evaluates their potential benefits and limitations. Surfactants have shown great potential in enhancing the remediation of contaminated soils by improving the solubility and mobility of hydrophobic contaminants. However, the effectiveness of surfactant-based remediation methods depends on several factors, and further research is needed to optimize their use.
Article
Engineering, Environmental
Yujie Yan, Zhang Ling, Wen Shu, Tao Huang, Rich Crane
Summary: A novel 3D electrokinetic remediation (3D EKR) system using FeOx/granular activated carbon (GAC) composite as a third electrode was studied for Cr removal from contaminated soil. The inclusion of third electrode particles in the soil improved the current density and reduced polarization compared to the conventional 2D EKR system. The enhanced oxidation of Cr(III) to Cr(VI) and electromigration towards the anode contributed to higher Cr removal.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Environmental
Muhammad Usman, Salah Jellali, Ioannis Anastopoulos, Yassine Charabi, Bassim H. Hameed, Khalil Hanna
Summary: Fenton-based treatments have gained considerable attention as viable strategies for soil decontamination, particularly in historically contaminated soils. The efficiency of remediation in these soils is significantly affected by various factors, making it challenging to treat them effectively. This review critically evaluates the applications, limitations, and implications of Fenton-based processes in historically contaminated soils, and identifies future research directions for promoting the upscaling of this technique for practical field application.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Jingyi Zhao, Ai Zhang, Paul Heroux, Zhuyu Sun, Yanan Liu
Summary: The study found that under certain conditions, dielectric barrier discharges (DBD) can efficiently degrade diesel-fuel-polluted soil, potentially becoming an effective remediation method. The degradation efficiency of diesel fuel is affected by factors such as soil depth and moisture, with high concentrations of diesel fuel being effectively removed through the action of alkyl radicals.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Xiru Chen, Xinyue Gu, Chao Wang, Liuqing Huang, Dingding Wu, Hao Wu, Sijia Liang, Jingyi Ling, Cheng Gu
Summary: Phthalic acid esters (PAEs), commonly used as plasticizers to improve the flexibility of materials, are widely distributed in soil and wastewater, raising public concerns due to their endocrine-disrupting effects. A ferrihydrite-H2O2-bisulfite ternary system was developed for efficient degradation of dimethyl phthalate (DMP) in this study. Hydroxyl radical (・OH) was identified as the dominant reactive species for DMP degradation. The study also showed that bisulfite-assisted heterogeneous Fenton-like reactions could be a potential in-situ soil remediation technology for efficient degradation of PAEs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Francisco J. Garcia-Mateos, Ramiro Ruiz-Rosas, Juana Ma Rosas, Jose Rodriguez-Mirasol, Tomas Cordero
Summary: Phosphorus-containing carbon fibers prepared by electrospinning of lignin solutions exhibit excellent acid properties and catalytic activity, achieving good performance in isopropanol decomposition and other reactions.
Article
Environmental Sciences
Raul Garcia-Cervilla, Aurora Santos, Arturo Romero, David Lorenzo
Summary: The research found that adding surfactant can enhance the ISCO process, however, in the presence of solubilized COCs, the concentration of surfactant will affect the efficiency of PS consumption.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Alicia Checa-Fernandez, Aurora Santos, Leandro O. Conte, Arturo Romero, Carmen M. Dominguez
Summary: The utilization of sonochemistry is a promising technology to enhance the decontamination of hydrophobic organic compounds (HOCs) in soil. Ultrasound (US) helps break down soil aggregates, facilitating the desorption of HOCs and their subsequent oxidation. Increasing US power accelerates the production of radicals and improves the degradation of pollutants.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Andres Sanchez-Yepes, Aurora Santos, Juana M. Rosas, Jose Rodriguez-Mirasol, Tomas Cordero, David Lorenzo
Summary: Chlorinated organic compounds (COCs) are commonly found in groundwater and industrial wastewaters. The in-situ regeneration of spent activated carbon using thermally activated sodium persulfate (TAP) was studied in this work. The physicochemical changes of the activated carbon before and after regeneration were investigated. The results showed that sulfate deposition on the activated carbon prevents the recovery of the initial adsorption capacity.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Environmental Sciences
Leandro O. Conte, Carmen M. Dominguez, Alicia Checa-Fernandez, Aurora Santos
Summary: Chlorinated organic compounds are commonly found toxic pollutants in soil and groundwater. In this study, an innovative process using hydrogen peroxide and ferrioxalate with visible light-emitting diode lamp was used to successfully oxidize and dechlorinate 124-trichlorobenzene in a saturated aqueous solution. The effects of hydrogen peroxide concentration, ferrioxalate dosage, and irradiation level on conversion and dechlorination were studied and optimized using experimental design and response surface methodology. The results showed that under the optimized conditions, the method achieved efficient conversion and dechlorination of 124-trichlorobenzene.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Environmental Sciences
Patricia Saez, Aurora Santos, Raul Garcia-Cervilla, Arturo Romero, David Lorenzo
Summary: Surfactant enhanced aquifer remediation using volatilization technique was studied in this work. The thermodynamic parameters of the volatilization process were validated through experiments. The results showed that volatilization can effectively remove VOCs and the surfactant solution can be recycled.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Chemistry, Physical
Andres Sanchez-Yepes, David Lorenzo, Patricia Saez, Arturo Romero, Aurora Santos
Summary: The study found that PS concentration, irradiance, temperature, as well as chloride and carbonates have an impact on the removal of NAP. The highest photon efficiency was observed at a specific irradiance level, while higher concentrations of PS led to a self-inhibitory effect.
Article
Chemistry, Physical
Salvador Asensio-Delgado, Fernando Pardo, Gabriel Zarca, Ane Urtiaga
Summary: The development of technology to reduce the environmental impact of fluorinated refrigerant gases is crucial. This study presents a prescreening tool based on artificial neural networks to predict the solubility of these gases in ionic liquids. The developed tool significantly reduces the experimental workload and demonstrates high predictive accuracy, facilitating the reduction and recovery of refrigerant gases.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Biochemistry & Molecular Biology
Aurora Santos, Raul Garcia-Cervilla, Alicia Checa-Fernandez, Carmen M. Dominguez, David Lorenzo
Summary: The discharge of lindane wastes in unlined landfills causes groundwater and soil pollution worldwide. In this study, the remediation of highly polluted soil using in situ chemical oxidation (ISCO) and simultaneous injection of surfactants and oxidants (S-ISCO) was investigated. The results showed that both treatments significantly reduced soil toxicity and organic extract toxicity, with the surfactant application proving to be suitable for full-scale applications.
Article
Environmental Sciences
Carmen M. Dominguez, Paula Ventura, Alicia Checa-Fernandez, Aurora Santos
Summary: This research investigates the acute toxicity of contaminated soils with hazardous chlorinated organic compounds. The study finds that the soils tested showed different levels of contamination and acute toxicity, highlighting the need for remediation. The researchers also observe that the concentration of COCs in the soil is related to their toxicity, and this relationship varies depending on the testing method used.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Chemical
Sergio V. Gutierrez-Hernandez, Fernando Pardo, Andrew B. Foster, Patricia Gorgojo, Peter M. Budd, Gabriel Zarca, Ane Urtiaga
Summary: PIM-1 membranes were tested for the separation of hydrofluorocarbons and hydrofluoroolefins, showing high permeability coefficients for difluoromethane (R-32) and high selectivity for F-gas pairs. The solubility of selected F-gases in PIM-1 was measured and fitted to sorption models. The potential of PIM-1 membranes for the recovery of high purity R-32 from refrigerant mixtures was demonstrated.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Behnam Hosseinzaei, Mohammad Jafar Hadianfard, Feridun Esmaeilzadeh, Maria del Carmen Recio-Ruiz, Ramiro Ruiz-Rosas, Juana M. Rosas, Jose Rodriguez-Mirasol, Tomas Cordero
Summary: The aim of this study was to synthesize chemically activated carbons from different agricultural residues and use them as supports for loading a Ni catalyst. The results showed that the activated carbons had considerable pore structures and the Ni/AC(PS) catalyst showed a superior catalytic activity. By raising the process temperature, the total amount of gas and hydrogen increased, and the highest total gas amount was achieved using Ni/AC(PS) at T = 550 degrees C.
Article
Engineering, Chemical
Fernando Pardo, Sergio Gutierrez-Hernandez, Paula Rodriguez-San Miguel, Gabriel Zarca, Ane Urtiaga
Summary: Difluoromethane (R-32), a hydrofluorocarbon (HFC), has been widely used as a primary component of refrigerant mixtures in refrigeration and air conditioning. The recovery of R-32 from depleted mixtures collected from end-of-life equipment is sought for synthesizing low-GWP refrigerant blends. Composite polymer/ionic liquid membranes based on poly-ether-block-amide have shown potential for separating R-32 from other fluorinated hydrocarbons. In this study, a spray coating technique was successfully applied to create defect-free thin selective layers of different coatings. The pilot results confirmed the superior performance and stability of [C2C1im] [SCN]-based membranes in recovering R-32 from refrigerant mixtures.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Miguel Viar, Salvador Asensio-Delgado, Fernando Pardo, Gabriel Zarca, Ane Urtiaga
Summary: In this study, the design of extractive distillation (ED) processes for separating the components of the R-410A mixture was evaluated by considering the influence of mass transfer phenomena and ionic liquid (ILs) properties. The results showed that solubility selectivity was the most influential IL property, and [C2C1im][SCN] was identified as a promising entrainer due to its high solubility selectivity and low viscosity, which allowed for operation at lower temperatures. The recovered R-32 can serve as a greener alternative to high-GWP R-410A and as a main component in the formulation of new low-GWP mixtures.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Polymer Science
Al Mamun, Francisco Jose Garcia-Mateos, Lilia Sabantina, Michaela Kloecker, Elise Diestelhorst, Ramiro Ruiz-Rosas, Juana Maria Rosas, Jose Rodriguez-Mirasol, Tomasz Blachowicz, Tomas Cordero
Summary: In this study, electrospun carbon fiber electrodes were prepared for use as catalysts in the oxygen reduction reaction. The results showed that these catalysts exhibited good activity and selectivity.