4.7 Article

Experimental and theoretical study to control the heavy metals in solid waste and sludge during pyrolysis using modified expanded vermiculite

Related references

Note: Only part of the references are listed.
Article Environmental Sciences

Experiment and mechanism study on enrichment of heavy metals during MSW pyrolysis by modified kaolin

Jiefei Li et al.

Summary: The enrichment of Pb, Cd, Zn, As, and Cr by modified kaolin during MSW pyrolysis was investigated. Different modified kaolin showed selective adsorption for different heavy metals, and the thermal stability and active components of modified kaolin played important roles in the enrichment of heavy metals. The physical mixing of different modified kaolin achieved complementary advantages on the retention capacity of heavy metals.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2023)

Article Green & Sustainable Science & Technology

Efficient removal of heavy metals from aqueous solutions by Mg/Fe bimetallic oxide-modified biochar: Experiments and DFT investigations

Song Cheng et al.

Summary: Mg/Fe bimetallic oxide-modified biochar (Fe/Mg-BC) derived from Eupatorium adenophorum was prepared for effective removal of Pb(II) and Cd(II) from wastewater. Various characterization methods were employed to analyze the physicochemical properties of Fe/Mg-BC. The results showed that Fe/Mg-BC had higher adsorption capacity for Pb(II) and Cd(II) in monometallic systems due to competitive adsorption. The adsorption mechanism involved ion exchange and mineral precipitation. Density functional theory calculations indicated that Fe/Mg-BC had a stronger affinity for Pb(II) than for Cd(II). The reusability test demonstrated the excellent adsorption performance of Fe/Mg-BC for Pb(II) and Cd(II). This study highlights the potential application of Fe/Mg-BC in heavy metal wastewater treatment.

JOURNAL OF CLEANER PRODUCTION (2023)

Article Engineering, Environmental

In-silico analysis of atmospheric diffusion, crop planting degrading scheme and health risk of dioxins from a domestic waste incineration plant

Qing Li et al.

Summary: This study investigated the dioxin emissions, phytoextraction, and microbial degradation of dioxins, as well as reducing human health risks in a domestic waste incineration power generation project using in-silico methods. Planting schemes were designed based on predicted dioxin concentrations in soil and economic benefits, enhancing degradation rates of dioxins by rhizosphere microorganisms. Healthy dietary plans were developed to reduce dioxin exposure risks for sensitive populations. The systematic approach provided theoretical support for soil remediation and human health risk control.

WASTE MANAGEMENT (2023)

Article Environmental Sciences

The Fate of Heavy Metals and Risk Assessment of Heavy Metal in Pyrolysis Coupling with AcidWashing Treatment for Sewage Sludge

Zhiwei Li et al.

Summary: This study investigated the fate of heavy metals in sewage sludge during pyrolysis coupled with acid washing treatment. Phosphoric acid was found to effectively remove most of the heavy metals, including copper, zinc, and chromium. The optimal washing conditions for heavy metal removal were determined, achieving a removal efficiency of 95.05%. After acid washing, the leaching concentrations of heavy metals in the solid residue were below the USEPA limit, indicating a low environmental risk.

TOXICS (2023)

Review Thermodynamics

A review on catalytic pyrolysis of plastic wastes to high-value products

Yujie Peng et al.

Summary: With the increasing plastic waste and decreasing fossil energy, pyrolysis has emerged as a promising technology for converting plastic waste into fuels and chemicals. This review discusses the properties of common plastics, the pyrolysis mechanism, and the product distribution. Catalysts, such as zeolites, base catalysts, and clays, have shown advantages over thermal cracking. Upgrading and further utilization of the liquid fuels and non-condensable gas co-product are necessary before commercial application. The review emphasizes the importance of techno-economic assessment and aims to inspire research efforts in creating a circular economy.

ENERGY CONVERSION AND MANAGEMENT (2022)

Article Energy & Fuels

Fabrication of Al2O3/CaO with anti-sintering for efficient removal of As2O3 in simulated flue gas: Experimental and DFT study

Jiandong Hong et al.

Summary: In this study, an anti-sintering Al2O3/CaO sorbent was synthesized and applied for the adsorption of As2O3, showing improved performance compared to untreated CaO due to enhanced anti-sintering ability with the addition of Al2O3. The adsorption mechanism of As2O3 on Al2O3/CaO was proposed based on experimental and theoretical analysis, with the Al site identified as the main adsorption active site and electron transfer channel.
Article Engineering, Environmental

Co-pyrolysis of sludge and kaolin/zeolite in a rotary kiln: Analysis of stabilizing heavy metals

Qian Li et al.

Summary: The study found that increasing pyrolysis temperature helps stabilize heavy metals in pyrolysis biochar, while adding kaolin/zeolite can further reduce the risk index of heavy metals. The characterization of biochar shows that raising pyrolysis temperature and incorporating additives are conducive to the formation of stable heavy metal-inorganics.

FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING (2022)

Review Environmental Sciences

Current solid waste management strategies and energy recovery in developing countries-State of art review

Afzal Husain Khan et al.

Summary: Solid waste generation has increased rapidly due to population growth, urbanization, and industrialization. Solid waste management is a significant challenge with local and global consequences. Developed countries have successful waste recycling strategies, while developing countries face challenges in waste sorting and handling due to high population density and economic instability.

CHEMOSPHERE (2022)

Review Environmental Sciences

Chemical stabilization of heavy metals in municipal solid waste incineration fly ash: a review

Xin-Yue Zhao et al.

Summary: Attention should be given to the management of fly ash containing toxic heavy metals generated from municipal solid waste incineration. Chemical stabilization is a practical and cost-effective treatment technology for heavy metals in fly ash, with potential for broad application and resource utilization.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2022)

Review Environmental Sciences

Heavy metal and metalloid-induced reproductive toxicity

Anirban Goutam Mukherjee et al.

Summary: Studies have shown that heavy metals and metalloids have severe adverse effects on the human reproductive system, potentially leading to infertility. Moderate to minute quantities of lead may affect several reproductive parameters and even semen quality. Ecological and industrial exposures to heavy metals and metalloids have disastrous effects on the reproductive system.

ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY (2022)

Article Green & Sustainable Science & Technology

Formation mechanism and influencing factors of dioxins during incineration of mineralized refuse

Pengtao Cai et al.

Summary: The study investigated the impact of external chlorine sources, temperature, atmosphere, and metal catalysts on the formation of dioxins during the incineration of mineralized refuse in landfills, finding that CuCl2 had the strongest catalytic effect. It also compared the abilities of dioxin re-synthesis from different fly ashes through in situ XPS and heavy metal morphology analysis, showing that mineralized refuse ash had a higher dioxin synthesis capacity due to stronger oxidation and chlorination of carbon and the interaction between copper and iron. Additionally, the concentration of gaseous dioxins produced during mineralized refuse incineration was directly proportional to the amount of CuCl2.

JOURNAL OF CLEANER PRODUCTION (2022)

Review Chemistry, Multidisciplinary

Recent Advances in Single-Junction Organic Solar Cells

Huifeng Yao et al.

Summary: Single-junction organic solar cells (OSCs) have achieved significant progress with power conversion efficiencies over 19%, thanks to innovations in material design and device optimization. This Minireview discusses molecular design strategies to improve absorption spectrum, energy level, and intermolecular aggregation in OSCs, as well as the role of molecular electrostatic potential in reducing energy loss. The review also introduces the latest advances in four types of OSCs composed of different donor:acceptor combinations, but practical challenges such as material cost, stability, and multi-function integration still need to be addressed.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

Review Environmental Sciences

An overview of the environmental pollution and health effects associated with waste landfilling and open dumping

Ayesha Siddiqua et al.

Summary: Landfilling is a common waste management method used globally, but it is associated with environmental pollution and health issues. Landfills can cause groundwater pollution, air pollution, odor pollution, and marine pollution. These pollution problems can have carcinogenic and non-carcinogenic health effects on nearby populations.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2022)

Review Environmental Sciences

Heavy metals removal/stabilization from municipal solid waste incineration fly ash: a review and recent trends

Mojtaba Ajorloo et al.

Summary: This article reviews the latest advances in fly ash treatment methods, including physical separation, leaching or extraction, thermal treatment, and solidification/chemical stabilization. Simultaneously considering economic and environmental factors can achieve efficient removal/stabilization of heavy metals.

JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT (2022)

Article Engineering, Chemical

Understanding Cd2+ Adsorption Mechanism on Montmorillonite Surfaces by Combining DFT and MD

Jia Du et al.

Summary: The adsorption mechanism of Cd2+ on different cleavage planes of montmorillonite has been investigated. The results show that the adsorption energies of Cd2+ on the (001) and (010) surfaces are -88.74 kJ/mol and -283.55 kJ/mol, respectively, and the adsorption mechanism is related to the electrostatic interactions and the interactions between orbitals. Upon the partial substitution of Na+, Cd2+ is adsorbed as inner-sphere surface complexes, while when Cd2+ completely replaces Na+, part of it moves to outer-sphere surface complexes.

PROCESSES (2022)

Article Engineering, Environmental

Hydrothermal treatment coupled with pyrolysis and calcination for stabilization of electroplating sludge: Speciation transformation and environmental risk of heavy metals

Mingzhe Li et al.

Summary: This study investigates the feasibility of hydrothermal treatment coupled with pyrolysis and calcination as a method for safe disposal of electroplating sludge. The results show that this method can effectively immobilize the soluble fractions of heavy metals in the sludge and reduce their environmental risk.

JOURNAL OF HAZARDOUS MATERIALS (2022)

Article Chemistry, Physical

DFT insight into Cd2+, Hg2+, Pb2+, Sn2+, As3+, Sb3+, and Cr3+ heavy metal ions adsorption onto surface of bowl-like B30 nanosheet

Sadegh Kaviani et al.

Summary: In this study, the interaction between different heavy metal ions and bowl-like B-30 nanosheet was analyzed using density functional theory calculations. The results showed that the bowl-like B-30 nanosheet exhibited better adsorption performance towards As3+ ion, indicating its potential application for heavy metal ion removal.

JOURNAL OF MOLECULAR LIQUIDS (2022)

Review Chemistry, Multidisciplinary

Municipal solid waste management and landfilling technologies: a review

Sonil Nanda et al.

Summary: The USA, China, and India are the top producers of municipal solid waste, with waste composition varying based on income levels. Municipal solid waste management options include recycling, incineration, waste-to-energy conversion, composting, or landfilling. Landfilling is a preferred method globally, with critical factors for sustainability including liners, soil cover thickness, leachate collection, and gas recovery facilities. Landfills act as ecological reactors undergoing various transformations, with bioreactor landfills emerging as a next-generation solution for efficient waste stabilization through controlled recirculation.

ENVIRONMENTAL CHEMISTRY LETTERS (2021)

Article Energy & Fuels

Experimental Study on Co-Pyrolysis Characteristics of Household Refuse and Two Industrial Solid Wastes

Hancheng Ma et al.

Summary: The calorific value of household refuse (HR) is greatly improved by classification and implementing sufficient pyrolysis conditions, resulting in better pyrolysis effects when co-pyrolyzing with industrial solid waste (ISW). The co-pyrolysis of HR and ISW has been found to lead to the formation of pyrolysis gas and pyrolysis oil as the main products.

ENERGIES (2021)

Review Environmental Sciences

Eco-friendly geopolymer prepared from solid wastes: A critical review

Bo Ren et al.

Summary: Solid wastes utilized in geopolymers have great potential in various applications and can contribute to sustainable development and environmental improvement; however, challenges in terms of technology, economy, and management need to be addressed for industrialization and commercialization.

CHEMOSPHERE (2021)

Article Engineering, Environmental

Sulfuric acid modified expanded vermiculite cover for reducing ammonia emissions from animal slurry storage

Yue Wang et al.

Summary: Animal slurry storage is a significant source of NH3 emission, and a novel method using H2SO4 modified expanded vermiculite cover was introduced to reduce NH3 emission effectively. Results showed that the NH3 mitigation rate reached 87% with the H2SO4-VM1 treatment, mainly due to conversion and adsorption processes, making it a potential alternative for NH3 emission control.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Energy & Fuels

Capture effect of Pb, Zn, Cd and Cr by intercalation-exfoliation modified montmorillonite during coal combustion

Zeyu Xue et al.

Summary: The study demonstrates that intercalation-exfoliation modification enhances the capture capacity of montmorillonite for heavy metals, especially showing significant improvements for Pb, Zn, and Cr, while having adverse effects on Cd in some cases. The modified MMT enhances the chemisorption of heavy metals by exposing more active sites.
Review Chemistry, Analytical

Pollutants formation, distribution, and reaction mechanism during WT pyrolysis: A review

Guanyi Chen et al.

Summary: Waste tire rubber can be reduced in volume and converted into fuel through pyrolysis technology, but it generates various pollutants. Process parameters such as temperature and heating rate affect the formation of pollutants.

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS (2021)

Article Chemistry, Physical

Boron nanocluster as a heavy metal adsorbent in aqueous environment: A DFT Study

Milon et al.

Summary: Boron nanoclusters show great adsorption properties for heavy metal ions in wastewater treatment, forming complex clusters through chemisorption process with high adsorption energies. Calculations were carried out using DFT and TD-DFT methods, considering solvation effects and different basis sets.

JOURNAL OF MOLECULAR STRUCTURE (2021)

Review Engineering, Environmental

Technological trends in heavy metals removal from industrial wastewater: A review

Rakesh Shrestha et al.

Summary: Rapid industrialization has led to heavy metal contamination in industrial wastewater, and traditional removal methods have limitations such as high sludge production and low removal efficiency. Newer, more efficient and innovative technologies are being investigated, with research evaluating the efficiency dependence on various parameters.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2021)

Review Toxicology

The effects of heavy metals on human metabolism

Zhushan Fu et al.

TOXICOLOGY MECHANISMS AND METHODS (2020)

Article Engineering, Environmental

Decomposition and reformation pathways of PCDD/Fs during thermal treatment of municipal solid waste incineration fly ash

Zhiliang Chen et al.

JOURNAL OF HAZARDOUS MATERIALS (2020)

Article Chemistry, Multidisciplinary

Enhancement and mechanism of vermiculite thermal expansion modified by sodium ions

Jinpeng Feng et al.

RSC ADVANCES (2020)

Review Environmental Sciences

Review on fate of chlorine during thermal processing of solid wastes

Peng Lu et al.

JOURNAL OF ENVIRONMENTAL SCIENCES (2019)

Article Chemistry, Multidisciplinary

Natural Vermiculite Enables High-Performance in Lithium-Sulfur Batteries via Electrical Double Layer Effects

Feixiang Wu et al.

ADVANCED FUNCTIONAL MATERIALS (2019)

Article Engineering, Environmental

Impact of a Coal-Fired Power Plant Shutdown Campaign on Heavy Metal Emissions in China

Sili Zhou et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2019)

Review Environmental Sciences

Heavy metal stress and responses in plants

N. -H. Ghori et al.

INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (2019)

Review Chemistry, Inorganic & Nuclear

Metal-organic frameworks for heavy metal removal from water

Paulina A. Kobielska et al.

COORDINATION CHEMISTRY REVIEWS (2018)

Article Chemistry, Multidisciplinary

Mussel-Inspired Adhesive and Conductive Hydrogel with Long-Lasting Moisture and Extreme Temperature Tolerance

Lu Han et al.

ADVANCED FUNCTIONAL MATERIALS (2018)

Article Engineering, Environmental

Selective and Fast Adsorption of Perfluorooctanesulfonate from Wastewater by Magnetic Fluorinated Vermiculite

Ziwen Du et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2017)

Article Engineering, Environmental

Mechanical and chemical recycling of solid plastic waste

Kim Ragaert et al.

WASTE MANAGEMENT (2017)

Article Chemistry, Multidisciplinary

Molecular electrostatic potentials and noncovalent interactions

Jane S. Murray et al.

WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE (2017)

Article Chemistry, Physical

Tuning the wettability of carbon nanotube arrays for efficient bifunctional catalysts and Zn-air batteries

Weiliang Tian et al.

JOURNAL OF MATERIALS CHEMISTRY A (2017)

Review Engineering, Environmental

Brominated flame retardants and the formation of dioxins and furans in fires and combustion

Mengmei Zhang et al.

JOURNAL OF HAZARDOUS MATERIALS (2016)

Article Green & Sustainable Science & Technology

Minimizing the increasing solid waste through zero waste strategy

Qingbin Song et al.

JOURNAL OF CLEANER PRODUCTION (2015)

Article Engineering, Environmental

Theoretical investigation of lead vapor adsorption on kaolinite surfaces with DFT calculations

Xinye Wang et al.

JOURNAL OF HAZARDOUS MATERIALS (2015)

Article Engineering, Environmental

Waste incineration industry and development policies in China

Yun Li et al.

WASTE MANAGEMENT (2015)

Article Chemistry, Physical

On the mechanism of exfoliation of 'Vermiculite'

S. Hillier et al.

CLAY MINERALS (2013)

Review Green & Sustainable Science & Technology

Enhanced Landfill Mining in view of multiple resource recovery: a critical review

Peter Tom Jones et al.

JOURNAL OF CLEANER PRODUCTION (2013)

Article Engineering, Chemical

The effect of interlayer cations on the expansion of vermiculite

Xiaoxu Huo et al.

POWDER TECHNOLOGY (2012)

Article Chemistry, Physical

Thermal properties of sodium-exchanged palabora vermiculite

Herminio F. Muiambo et al.

APPLIED CLAY SCIENCE (2010)

Article Engineering, Environmental

Spatial, sources and risk assessment of heavy metal contamination of urban soils in typical regions of Shenyang, China

Yuebing Sun et al.

JOURNAL OF HAZARDOUS MATERIALS (2010)

Article Chemistry, Physical

Theoretical Study of the Effect of (001) TiO2 Anatase Support on V2O5

Konstantinos Alexopoulos et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2010)

Article Environmental Sciences

Assessing the health risk of heavy metals in vegetables to the general population in Beijing, China

Song Bo et al.

JOURNAL OF ENVIRONMENTAL SCIENCES (2009)

Article Engineering, Environmental

Effect of ionic strength on the adsorption of copper and chromium ions by vermiculite pure clay mineral

A. A. El-Bayaa et al.

JOURNAL OF HAZARDOUS MATERIALS (2009)

Article Engineering, Environmental

Competitive sorption and desorption of heavy metals by individual soil components

E. F. Covelo et al.

JOURNAL OF HAZARDOUS MATERIALS (2007)