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Article
Environmental Sciences
Xiaohui Liu et al.
Summary: This study investigated the potential of thermophilic anaerobic digestion combined with thermal hydrolysis pretreatment for maximizing biogas yield from swine manure. The results showed that the combined treatment significantly increased methane production and ensured a sustainable digestion process with microbial diversity. Improving the energetic efficiency of the pretreatment units is crucial for the development of this treatment mode.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Engineering, Environmental
Lingling Xu et al.
Summary: This study found that Cd can improve the heat resistance of the hyperaccumulator plant Sedum alfredii. Cd penetrates the guard cells, restores stomatal function, and mitigates water loss under heat stress. Additionally, Cd activates antioxidant enzymes, promotes phytohormone biosynthesis, and upregulates a series of genes, enhancing the heat resistance of S. alfredii.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Xiaohou Zhou et al.
Summary: This study successfully prepared a new biochar material with sustained nutrient release characteristics and chromium removal potential. The biochar and polyphosphate were formed simultaneously and tightly intertwined during one-step pyrolysis. The batch experiments showed that the biochar material continuously released multiple nutrients and had a high removal rate for chromium.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Huabin Wang et al.
Summary: Red mud (RM) and iron-salt-modified biochar (Fe/BC) are functional materials with significant attention in waste reutilization. This study synthesized and characterized RM/BC and Fe/BC, and analyzed their environmental behaviors with natural soil aging treatment. The results showed a decrease in Cd(II) adsorption capacity for both materials after aging. The main removal mechanisms were co-precipitation, chemical reduction, surface complexation, ion exchange, and electrostatic attraction.
Article
Agricultural Engineering
Dylan Mariuzza et al.
Summary: Hydrothermal carbonization (HTC) is a promising strategy for converting wet biomass wastes into carbon-condensed solid hydrochars. Co-hydrothermal carbonization of cow manure with grape marc and corn stover did not enhance solid yield or higher heating value synergistically, but it did increase the electrical conductivity of hydrochars. Hydrochars have higher fixed carbon content and lower H/C and O/C atomic ratios than their parent feedstocks, reducing their susceptibility to thermal degradation and decreasing the bioavailability of heavy metals. The land application of hydrochars could potentially reduce phosphorous run-off and eutrophication compared to raw manure.
BIOMASS & BIOENERGY
(2022)
Article
Agricultural Engineering
Renisha Karki et al.
Summary: Anaerobic mono- and co-digestion of coffee pulp, cattle manure, food waste, and dewatered sewage sludge were evaluated using biochemical methane potential tests. Mono-digestion of coffee pulp and food waste yielded higher methane yields compared to the co-digestion ratios examined, with no synergistic or antagonistic effects observed. Nine different kinetic models were compared, with cone and modified Gompertz models identified as best-fit for mono- and co-digestion of coffee pulp and cattle manure, and superimposed model for food waste and dewatered sewage sludge.
BIORESOURCE TECHNOLOGY
(2022)
Article
Computer Science, Artificial Intelligence
Yaru Liu et al.
Summary: A novel method based on Artificial Neural Network (ANN) and Bayesian probability framework (BPF) is proposed to address the multi-source uncertainty factors in engineering structures. The method reconstructs dynamic forces using supervised learning and Bayesian theorem, and the reconstructed results are evaluated using various indices.
KNOWLEDGE-BASED SYSTEMS
(2022)
Article
Engineering, Chemical
Yacine Khetib et al.
Summary: The study forecasted the thermal conductivity of Fe3O4/water nanofluid using artificial neural network (ANN) and response surface method (RSM), finding that ANN had better efficacy compared to RSM in predicting all data points accurately.
CHEMICAL ENGINEERING COMMUNICATIONS
(2022)
Article
Environmental Sciences
Jia Fu Chin et al.
Summary: This review evaluates the feasibility of chitosan-modified magnetic biochar for heavy metal removal, by critically analyzing the existing research and reviewing the methods of modification, physicochemical changes, and adsorption performances. It also analyzes kinetic and isotherm models, as well as the operating parameters that affect the adsorption process.
Article
Environmental Sciences
Wen-Tao Tan et al.
Summary: Metal oxide-modified biochar showed excellent adsorption performance in wastewater treatment. In this study, iron-manganese (Fe-Mn) oxide-modified biochar (BC-FM) was synthesized using rice straw biochar, and its adsorption process, removal effect, and mechanism of cadmium (Cd) adsorption in wastewater treatment were investigated. The results demonstrated that BC-FM had a significantly higher adsorption capacity for Cd compared to other modified biochars mentioned in the literature. The Cd adsorption by BC-FM followed a spontaneous chemical adsorption mechanism. Additionally, BC-FM exhibited good reusability and stability. Therefore, metal oxide-modified biochar can be an efficient adsorbent for treating Cd-contaminated wastewater.
ENVIRONMENTAL POLLUTION
(2022)
Article
Chemistry, Applied
Bo Peng et al.
Summary: This study focuses on the co-pyrolysis of sludge and biomass to produce biochar with solidification of heavy metals. The study investigates the synergistic coupling mechanism, surface functional groups, and pore structure characteristics of the co-pyrolytic biochar. It also examines the solidification characteristics and mechanism of heavy metals. The results show that co-pyrolysis prolongs the decomposition process and enhances the solidification effect of heavy metals, leading to a high-quality biochar with lower heavy metal risk.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Marwa A. Hassan et al.
Summary: This study investigated the lead and cadmium exposure in Barki rams and the beneficial effects of 4% dietary supplement of Nannochlorposis oculata (N. oculata) in improving performance, biochemical markers, and antioxidant activity. The results showed that lead and cadmium exposure led to lower weight gain and feed conversion ratio, as well as decreased thyroid hormone activity and biochemical markers. However, the dietary supplement of 4% N. oculata improved these parameters and reduced the endocrine disrupting effects of lead and cadmium.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2022)
Article
Environmental Sciences
Lijuan Sun et al.
Summary: Biochar modified with different materials showed improved adsorption capacity for Cd2+. The Cd2+ adsorption kinetics followed a chemisorption process. The Cd2+ adsorption capacity of the modified biochars was higher than that of the pristine biochar. The modified biochars also showed increased contributions of precipitation, complexion, and metal-Cr coordination in Cd2+ adsorption.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Xuan Guo et al.
Summary: This study explored the competitive or synergetic adsorption mechanism of phosphate and antibiotics using chestnut shell-derived biochar. Modified biochar containing Fe and Mn ions showed high adsorption capacities for phosphate and oxytetracycline. The adsorption processes followed the pseudo-second-order kinetic model, with phosphate fitting better to the Langmuir isotherm and oxytetracycline fitting better to the Freundlich isotherm. Solution pH and cation strength significantly influenced the adsorption.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Nisar Muhammad et al.
Summary: This study investigated the effects of different pyrolysis temperatures on the properties and performance of biochars derived from green waste. The results showed that increasing the pyrolysis temperature led to changes in physicochemical and structural properties, as well as improved adsorption performance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Yi-bo Hu et al.
Summary: The effect of oxygen on the removal of Cd(II) by nanoscale zero-valent iron (NZVI) has been investigated. It was found that Cd(II) adsorbed on the surface of NZVI can be reduced to Cd(0) under anaerobic conditions. However, the presence of oxygen significantly decreases the Cd(II) removal efficiency and inhibits Cd(II) reduction due to the thickened surface gamma-FeOOH layer. Moreover, oxygen intrusion corrodes Cd(0) and leads to the leaching of Cd(II) ions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Multidisciplinary Sciences
Huabin Wang et al.
Summary: This study prepared integrated micro-electrolysis composites (IMC) using red mud and rice straw and explored their application in the removal of heavy metal contaminants. The results showed that IMC exhibited a good removal capacity for Cr(VI) and the removal mechanisms involved chemical reduction, complexation, co-precipitation, and physical adherence.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Environmental
Christopher Chiedozie Obi et al.
Summary: This study focuses on the multi-characteristic optimization and modeling analysis of electrocoagulation treatment of abattoir wastewater using iron-iron electrodes. The research applied Response Surface Methodology (RSM) and Artificial Intelligent (AI) modeling tools such as Artificial Neural Network (ANN) and Adaptive Neuro-Fuzzy Inference System (ANFIS) for modeling and optimization. The results showed that all models had high determination coefficients, indicating their accuracy. However, the performance error indices revealed that the ANFIS model had the best prediction accuracy. The validated optimization results confirmed the reliability of the models.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Water Resources
Nabila S. Ammar et al.
Summary: Modified activated carbon sorbents were prepared from the activation of corn husks precursor to increase the chemical activity of resulting adsorbents. The presence of acidic functional groups like -OH and -COOH improved the removal efficiency of the sorbents. The ACP-Zn-Fe and ACP-Zn showed similar removal efficiency for hexavalent chromium ions, with the sorption process following a pseudo-second-order model.
APPLIED WATER SCIENCE
(2021)
Article
Green & Sustainable Science & Technology
Haimeng Sun et al.
Summary: A novel iron based solid carbon source composite was prepared by solid carbon sources and zero-valent iron for advanced simultaneous removal of nitrate and phosphate. The composite with 30% zero-valent iron weight ratio showed the best simultaneous removal performance, with the fastest phosphate concentration decline observed at initial pH = 5.5.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Ning Wang et al.
Summary: Supported metal catalysts prepared using impregnation method often suffer from poor dispersion and thermal stability. In this study, it was demonstrated that self-pillared MFI zeolite nanosheets are ideal supports for immobilizing ultrasmall metal clusters, exhibiting excellent catalytic performance in various reactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Agricultural Engineering
Yanglu Mei et al.
Summary: The study demonstrated that Fe-N modified biochar produced by mixing rice straw with FeCl3·6H2O and urea showed enhanced adsorption capacity for TC due to the presence of more functional groups and increased surface area and pore volume. The adsorption mechanism of TC on Fe-N-RSBC involved pore filling, hydrogen-bond interaction, surface complexation, and pi-pi interaction. Fe-N-RSBC can be effectively used as an adsorbent for TC removal from aqueous solution.
BIORESOURCE TECHNOLOGY
(2021)
Article
Computer Science, Artificial Intelligence
Rui Yan et al.
Summary: This study established a multi-time, multi-site forecasting model of Beijing's air quality using deep learning network models based on spatiotemporal clustering. The LSTM model was found to be the optimal model for multiple-hour forecasting. Seasonal forecasting did not show significant improvement.
EXPERT SYSTEMS WITH APPLICATIONS
(2021)
Article
Chemistry, Analytical
Bingbing Qiu et al.
Summary: This review summarizes the research progress on biochar as an adsorbent for heavy metal pollution water treatment, including the effects of its physicochemical properties on heavy metal adsorption, the effectiveness of modified biochar, and various factors influencing heavy metal adsorption. Additionally, different mechanisms of heavy metals adsorption based on different physicochemical properties are discussed.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Biology
Halil Erdem
Summary: The study found that application of biochar can reduce the uptake of cadmium by tobacco plants, with corn cob biochar showing more effectiveness in this aspect.
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
(2021)
Review
Engineering, Environmental
Xuerong Zhou et al.
Summary: Biochar, as an economical carbonaceous material, has emerged as an alternative candidate in catalysis field. Functional structures on biochar, such as oxygen-containing groups, defects, and persistent free radicals, have been identified as active sites in heterogeneous catalytic systems. Loaded metal components and doped heteroatoms can also act as active sites in the catalysis system.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Xiaona Yu et al.
Summary: Tobacco is a plant sensitive to Cd, but converting tobacco stalk to biochar for Cd sequestration in soils can enhance tobacco productivity. The addition of TS-biochar in red soil significantly increases soil pH and reduces exchangeable Cd fractions, improving tobacco growth under Cd stress. TS-biochar helps transform bioavailable Cd into less hazardous forms, repairing soils and enhancing tobacco productivity.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Xiaolong Li et al.
Summary: Magnetic measurement was used as a substitute for conventional methods in determining potentially toxic elements in aquatic products. The study found varying degrees of correlation between magnetic parameters and element concentrations in aquatic products, and identified SVM models as more effective in predicting certain elements compared to BP-ANN models. There were successful predictions for Cr and Ni concentrations, while predictions for Cd and Zn concentrations were less accurate using both models.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Ying Deng et al.
Summary: This study investigated the feasibility of different prediction models for estimating the occurrence of haloketones in water supply systems. The results showed that RBF and BP artificial neural networks outperformed linear/log linear models in terms of prediction ability, with RBF ANN demonstrating the capability to recognize complex nonlinear relationships between haloketones occurrence and water quality.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agricultural Engineering
Huabin Wang et al.
BIORESOURCE TECHNOLOGY
(2020)
Article
Environmental Sciences
Nahum Andres Medellin-Castillo et al.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2020)
Article
Microbiology
Yehao Liu et al.
Article
Environmental Sciences
Yufeng Du et al.
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Agronomy
Ariel A. Szogi et al.
Review
Engineering, Environmental
Ailin Zhang et al.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2020)
Article
Environmental Sciences
Mahesh R. Gadekar et al.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2019)
Article
Agricultural Engineering
Huabin Wang et al.
BIORESOURCE TECHNOLOGY
(2018)
Article
Engineering, Environmental
Yinhai He et al.
CHEMICAL ENGINEERING JOURNAL
(2018)
Article
Environmental Sciences
Qingqing Huang et al.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2018)
Article
Agronomy
Xiao Lin He et al.
Article
Agricultural Engineering
K. Thomas Klasson
BIOMASS & BIOENERGY
(2017)
Article
Agricultural Engineering
Anna Witek-Krowiak et al.
BIORESOURCE TECHNOLOGY
(2014)
Article
Environmental Sciences
Amanda D. Cuellar et al.
ENVIRONMENTAL RESEARCH LETTERS
(2008)
Article
Engineering, Environmental
Mario Plattes et al.
JOURNAL OF HAZARDOUS MATERIALS
(2007)
