Enhanced Adsorption of Cu2+ from Aqueous Solution by Sludge Biochar Compounded with Attapulgite-Modified Fe

Article Environmental Sciences

Adsorption and immobilization of phosphorus from eutrophic seawater and sediment using attapulgite - Behavior and mechanism

Chenglong Xu et al.

Summary: The study found that attapulgite has good adsorption behavior for phosphorus and can improve the adsorption capacity of phosphorus in mariculture pond sediments, reducing the risk of phosphorus release.

CHEMOSPHERE (2023)

添加到收藏夹

Article

Sorption treatment of water from chromium using biochar material

Vasily Sergeev et al.

Arab Journal of Basic and Applied Sciences (2023)

添加到收藏夹

Article Environmental Sciences

Unveiling the role of biochar in simultaneous removal of hexavalent chromium and trichloroethylene by biochar supported nanoscale zero-valent iron

Linbo Qian et al.

Summary: In this study, the removal of hexavalent chromium (Cr(VI)) and Trichloroethylene (TCE) by rice straw pyrolysis biochar supported nanoscale zero-valent iron (nZVI) was investigated. The results showed that biochar supported nZVI effectively removed Cr(VI) and TCE in single pollutant system, but mutual inhibition occurred when both contaminants were present. Therefore, the mutual inhibition effect should be evaluated in the remediation of combined contaminated groundwater.

SCIENCE OF THE TOTAL ENVIRONMENT (2023)

添加到收藏夹

Article Chemistry, Multidisciplinary

Adsorption of phosphorus in water by metal-modified large-size biochar: Realizing the recovery and recycling of phosphorus

Ziwan Hu et al.

Summary: Biochar plays a significant role in wastewater treatment, but faces limitations in phosphorus adsorption capacity and recycling. Metal-modified large-size biochars have shown improved phosphorus adsorption capabilities, yet challenges remain in enhancing desorption efficiency for practical fertilizer application.

SUSTAINABLE CHEMISTRY AND PHARMACY (2023)

添加到收藏夹

Article Agricultural Engineering

Enhancing anaerobic digestion of pharmaceutical industries wastewater with the composite addition of zero valent iron (ZVI) and granular activated carbon (GAC)

Chenbo Dai et al.

Summary: The combination of ZVI and GAC was found to enhance anaerobic digestion of pharmaceutical wastewater, increasing COD removal and methane production while reducing the levels of toxic compounds and biotoxicity. This was attributed to the establishment of direct interspecies electron transfer (DIET), which also led to changes in microbial community composition and pathways of methane production.

BIORESOURCE TECHNOLOGY (2022)

添加到收藏夹

Article Environmental Sciences

Rice Straw Biochar and Magnetic Rice Straw Biochar for Safranin O Adsorption from Aqueous Solution

Do Thi My Phuong et al.

Summary: This study investigates the adsorption capacity of rice straw biochar and magnetic rice straw biochar for Safranin O in water. The results show that magnetic biochar can enhance the adsorption capacity of its precursor biochar and can be easily separated using an external magnet.

WATER (2022)

添加到收藏夹

Article Environmental Sciences

Calcium-modified granular attapulgite removed phosphorus from synthetic wastewater containing low-strength phosphorus

Na Lv et al.

Summary: This study proposes the use of a simple and recyclable adsorbent to remove low-concentration phosphorus from water. The adsorption mechanism was investigated, and it was found that Ca-GAT performed well in removing phosphorus when the solution pH was in the range of 5-10. The presence of competing anions did not significantly affect the adsorption capacity of Ca-GAT. The phosphorus was mainly removed through the formation of Ca-phosphorus precipitation.

CHEMOSPHERE (2022)

添加到收藏夹

Article Environmental Sciences

Study on the SBA-15 Silica and ETS-10 Titanosilicate as Efficient Adsorbents for Cu(II) Removal from Aqueous Solution

Doina Humelnicu et al.

Summary: The efficiency of Cu(II) removal from aqueous solution by silica SBA-15 and titanosilicate ETS-10 was investigated. The maximum adsorption capacity of both adsorbents was determined by studying various experimental parameters. The Langmuir model was found to be the best fit to describe the equilibrium adsorption, with ETS-10 having a higher adsorption capacity than SBA-15. Pseudo-first-order and pseudo-second-order kinetic models were the most applicable to describe the adsorption kinetics. Thermodynamic parameters indicated that the adsorption of Cu(II) onto the two adsorbents is spontaneous and endothermic.

WATER (2022)

添加到收藏夹

Article Multidisciplinary Sciences

Optimization of target biochar for the adsorption of target heavy metal ion

Runjuan Zhou et al.

Summary: The purpose of this study was to investigate the pyrolysis conditions of biochar suitable for specific heavy metal ions, characterize the optimized biochar, and study its adsorption performance. The optimized pyrolysis conditions for Cu2+ and Zn2+ were determined through experimental design and optimization. The adsorption capacity of the optimized biochar for Cu2+ and Zn2+ was higher than that of the unoptimized biochar. The physical and chemical properties of the optimized biochar were analyzed. This study provides a new perspective for optimizing the production of biochar for specific environmental applications.

SCIENTIFIC REPORTS (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Analysis of the role of various biochar in the remediation of heavy metals in contaminated water and its kinetics study

Sara Tehreem et al.

Summary: This study examined the efficiency of corn cob and sugarcane bagasse-derived biochar for removing metals (Pb, Ni, and Cu) from water. The optimal adsorption conditions were determined, and it was found that corn cob biochar had better metal removal activity compared to sugarcane bagasse biochar. The results suggest that these biochars can be used as cost-effective bio-adsorbents for heavy metal removal from wastewater.

JOURNAL OF SAUDI CHEMICAL SOCIETY (2022)

添加到收藏夹

Article Engineering, Environmental

Enhanced removal of Cd2+ by nano zero-valent iron modified attapulgite from aqueous solution: Optimal design, characterization and adsorption mechanism

Liang Dai et al.

Summary: Nano zero-valent iron modified attapulgite composite showed excellent potential for the removal of Cd2+ from contaminated water. The composite material exhibited high removal efficiency for Cd2+ in aqueous solutions and outperformed attapulgite. The adsorption process followed the pseudo-second-order model, with chemisorption as the dominant mechanism. The removal process was spontaneous and endothermic, accompanied by an increase in entropy. The presence of other metal ions in the solution strongly inhibited the removal of Cd2+. The mechanism of Cd2+ removal involved surface-complexation adsorption and precipitation/coprecipitation.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2022)

添加到收藏夹

Article Engineering, Environmental

Immobilization of heavy metals in biochar derived from co-pyrolysis of sewage sludge and calcium sulfate

Liheng Liu et al.

Summary: The study showed that in the co-pyrolysis of sewage sludge and CaSO4 to produce biochar, appropriate dosage of CaSO4, high pyrolysis temperature, and suitable holding time can improve the immobilization rate of heavy metals. Suitable pyrolysis temperature and holding time promote the formation of crystals and particles in biochar, leading to the immobilization of more heavy metals.

JOURNAL OF HAZARDOUS MATERIALS (2021)

添加到收藏夹

Article Engineering, Environmental

Co-pyrolysis of sewage sludge and organic fractions of municipal solid waste: Synergistic effects on biochar properties and the environmental risk of heavy metals

Xingdong Wang et al.

Summary: The co-pyrolysis of organic fractions of municipal solid waste with sewage sludge can enhance biochar properties, increase pH values and carbon contents, and transform heavy metals into more stable forms, reducing their environmental risk in blended biochars. However, the addition of PVC hindered biochar properties and compromised heavy metals immobilization during sewage sludge pyrolysis.

JOURNAL OF HAZARDOUS MATERIALS (2021)

添加到收藏夹

Article Engineering, Environmental

KOH-activated porous biochar with high specific surface area for adsorptive removal of chromium (VI) and naphthalene from water: Affecting factors, mechanisms and reusability exploration

Jianhua Qu et al.

Summary: A high-performance porous biochar (PBCKOH) was successfully synthesized through KOH chemical activation, showing excellent adsorption performance for both Cr(VI) and NAP in water treatment. The PBCKOH achieved high uptake capacities for both contaminants and exhibited multiple kinetics during the adsorption process. The enhanced adsorption of Cr(VI) was mainly attributed to electrostatic attraction, complexation, ion exchange, and reduction actions, while the high NAP uptake was achieved through pore filling and π-π stacking interactions.

JOURNAL OF HAZARDOUS MATERIALS (2021)

添加到收藏夹

Article Chemistry, Physical

Equilibrium, kinetic and thermodynamic study of diazinon adsorption from water by clay/GO/Fe3O4: Modeling and optimization based on response surface methodology and artificial neural network

Negin Sohrabi et al.

Summary: A magnetic composite of clay/graphene oxide/Fe3O4 was used to remove Diazinon from aqueous solutions, with analysis showing well-synthesized structure and efficient adsorption process. Response surface methodology and artificial neural network methods were employed to study the impacts of various factors on adsorption efficiency, demonstrating high predictive ability of the composite.

JOURNAL OF MOLECULAR LIQUIDS (2021)

添加到收藏夹

Article Chemistry, Physical

Adsorption of antibiotics from water by using Chinese herbal medicine residues derived biochar: Preparation and properties studies

Honggang Wang et al.

Summary: The rapid increase in residue of Chinese herbs from Traditional Chinese Medicine has raised concerns over potential pollution to water and soil. This study demonstrates that biochar derived from Chinese herbal medicine residue can be effectively used as an adsorbent to remove antibiotics pollutants from wastewater.

JOURNAL OF MOLECULAR LIQUIDS (2021)

添加到收藏夹

Article Environmental Sciences

Magnetic biochar reduces phosphorus uptake by Phragmites australis during heavy metal remediation

Jingtao Wu et al.

Summary: Magnetic biochar can reduce available heavy metal concentrations in soil, inhibit heavy metal uptake by plants, but also decrease plant growth and soil microbial biomass. Phosphorus supplementation is recommended when applying magnetic biochar to maintain plant performance and soil health.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

添加到收藏夹

Review Environmental Sciences

Preparation of biochar and biochar composites and their application in a Fenton-like process for wastewater decontamination: A review

Xuqin Pan et al.

Summary: Biochar is a carbon-rich material obtained from solid waste pyrolysis, featuring low cost, large specific surface area, and strong adsorption capacity. Biochar composites, produced by loading nano particles onto biochar, have been widely applied in wastewater treatment to enhance the performance of advanced oxidation processes. However, due to the variety of biochar feedstocks and preparation methods, comparing the properties of different biochars can be challenging.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

添加到收藏夹

Article Environmental Sciences

Highly Efficient Removal of Cu(II) Ions from Acidic Aqueous Solution Using ZnO Nanoparticles as Nano-Adsorbents

Eduardo Leiva et al.

Summary: Water pollution by heavy metals, particularly copper, has significant impacts on aquatic ecosystems. This study explores the use of ZnO nanoparticles for removing Cu(II) ions from acidic waters, showing efficient removal at pH=4.8.

WATER (2021)

添加到收藏夹

Article Agricultural Engineering

Adsorption of copper (II) in aqueous solution using biochars derived from Ascophyllum nodosum seaweed

Ravi Katiyar et al.

Summary: This study found that seaweed-derived biochar showed high removal efficiency for Cu(II) in water, with Langmuir adsorption isotherm explaining the adsorption mechanisms. This indicates that waste biomass (seaweed) could be a valuable biological resource for removing heavy metals from various water bodies.

BIORESOURCE TECHNOLOGY (2021)

添加到收藏夹

Article Environmental Sciences

Strong adsorption of metolachlor by biochar prepared from walnut shells in water

Lu Liu et al.

Summary: This study compared the removal of metolachlor by biochars prepared from walnut shells, cow dung, and corn cobs, with walnut shell biochar showing the highest removal rate. The adsorption of metolachlor by biochars may be influenced by electron donor-acceptor interactions and pore filling. These findings could help further investigations into the adsorption mechanism and process optimization.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2021)

添加到收藏夹

Article Environmental Sciences

Single and Competitive Adsorption Behaviors of Cu2+, Pb2+ and Zn2+ on the Biochar and Magnetic Biochar of Pomelo Peel in Aqueous Solution

Qianlan Wu et al.

Summary: The study investigated the adsorption characteristics of Cu2+, Pb2+, and Zn2+ on biochars prepared from pomelo peel at different temperatures, revealing that pyrolysis temperature and magnetization can impact the adsorption capacity of biochar, and the adsorption isotherm types of Pb2+ and Zn2+ changed in binary metal conditions.

WATER (2021)

添加到收藏夹

Article Multidisciplinary Sciences

Fabrication of attapulgite/magnetic aminated chitosan composite as efficient and reusable adsorbent for Cr (VI) ions

Abdelazeem S. Eltaweil et al.

Summary: An efficient composite material was constructed for adsorptive removal of Cr(VI) ions, showing good adsorption performance and reusability.

SCIENTIFIC REPORTS (2021)

添加到收藏夹

Article Environmental Sciences

Nonlinear Isotherm and Kinetic Modeling of Cu(II) and Pb(II) Uptake from Water by MnFe2O4/Chitosan Nanoadsorbents

Manny Anthony M. Taguba et al.

Summary: Researchers have developed a magnetic chitosan-manganese ferrite for efficient removal of Cu(II) and Pb(II), demonstrating that chitosan enhances the performance of the adsorbent. The adsorption capacities for both metals were significantly higher compared to manganese ferrite, with higher affinity observed for Pb(II) due to inner-sphere complex formation. Their thermodynamic studies showed spontaneous and endothermic uptake of Pb(II) or Cu(II) by the magnetic adsorbent.

WATER (2021)

添加到收藏夹

Review Environmental Sciences