Article
Environmental Sciences
Li Jia, Peng Cheng, Yue Yu, Shi-hu Chen, Chen-xing Wang, Ling He, Hao-tian Nie, Jian-cheng Wang, Jian-chun Zhang, Bao-guo Fan, Yan Jin
Summary: To solve the low adsorption efficiency and ineffective recycling of biochar obtained by pyrolysis, various processes such as chemical coprecipitation, sol-gel, multimetal multilayer loading, and biomass pyrolysis coking have been integrated to design a high-performance biochar adsorbent. The effects of O2 concentration and temperature on regeneration characteristics were explored, and an optimal regeneration method and conditions were proposed. The microscopic characteristics of the regenerated samples were revealed, along with the mechanism of Hg0 removal and regeneration. The results show that doping multiple metals enhances the oxidative activity of biochar carriers and improves Hg0 removal efficiency.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Energy & Fuels
Xiangwen Xing, Xiaoyang Zhang, Jiyun Tang, Lin Cui, Yong Dong
Summary: Fe2O3/TiO2 sorbents synthesized by the sol-gel method exhibited excellent mercury capture efficiency in simulated syngas, with sensitivity to H2S and reusability.
Article
Engineering, Environmental
Juan L. Obeso, Herlys Viltres, Catalina Flores, Alfredo Lopez-Olvera, Amin Reza Rajabzadeh, Seshasai Srinivasan, Ilich A. Ibarra, Carolina Leyva
Summary: This study reports on the exceptional adsorption properties of Al(III)-based MOFs such as DUT-5 and MOF-303 for diclofenac sodium (DCF) remediation. Both MOFs exhibited high chemical stability and a maximum adsorption capacity of 334.89 and 103.36 mg g-1, respectively. The adsorption mechanisms were proposed to involve physicochemical forces such as metal & pi;, & pi;-& pi; stacking, and electrostatic interaction.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Ruize Sun, Guangqian Luo, Mingyu Yu, Li Wang, Xinpei Lu, Xian Li, Hong Yao
Summary: Adsorbents injection technology is an effective strategy for controlling mercury emission from flue gas. This study proposed a novel method for synthesizing nano-sulfur adsorbent and demonstrated its higher efficiency compared to micron-sized elemental sulfur adsorbent. Furthermore, the research revealed the differences in sulfur allotropes' reactions with mercury.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Environmental Sciences
Xiang Cheng, Ting Luo, Feiyi Chu, Bin Feng, Shibo Zhong, Fei Chen, Jie Dong, Wenbin Zeng
Summary: This review summarizes the recent advances in multifunctional materials for detection, detoxification, adsorption, and removal of mercury ions, discusses the advantages and disadvantages of different types of sensors, and points out the future development direction.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Engineering, Chemical
L. P. Teh, H. D. Setiabudi, S. N. Timmiati, M. A. A. Aziz, N. H. R. Annuar, N. N. Ruslan
Summary: Mitigating CO2 and CH4 emissions by converting them into valuable syngas through DRM is feasible, but catalyst deactivation has hindered industrial application. Developing effective catalysts, with ceria showing high potential as both support and active site, is crucial. Material properties, such as redox and acid/base properties, greatly impact catalytic behavior and performance in DRM.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Engineering, Environmental
Baihe Guo, Yanlin Wang, Xiaolei Qiao, Xin Shen, Jingnan Guo, Jun Xiang, Yan Jin
Summary: Utilizing power plant fly ash to prepare CO2 adsorbent can achieve waste utilization and low-carbon power generation. By studying the performance and regeneration kinetics under different regeneration conditions, optimal regeneration conditions can be identified to achieve the recycling of adsorbent efficiently.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Zhuang Liu, Yiman Cai, Jinsong Zhou, Qixin Zhou, Lingtao Zhou, Yang Lu, Bohao Li, Tang Wang
Summary: This study investigated the performance of CuCl2 solution in the regeneration of activated carbon (AC) for mercury removal. It was found that CuCl2 solution exhibited excellent synergy in elution of mercury-containing compounds, restoration of pore structure, and promotion of mercury removal. The optimal impregnation content of CuCl2 was 10%, which achieved a high and stable mercury removal efficiency above 99%.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Environmental Sciences
Xianfei Huang, Xianliang Wu, Xiangchen Tang, Zhenming Zhang, Jianrong Ma, Jiachun Zhang, Huijuan Liu
Summary: The study investigated heavy metal pollution and microbial diversity in the Wanshan mercury mine and its surroundings, revealing varying degrees of soil pollution with high mercury risk. Cultivated land displayed higher community richness compared to the mercury mining district and woodland.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Engineering, Environmental
Qian Li, Lang Liao, Rui Xu, Zhenguo Wu, Zhe Yin, Yuqi Han, Yan Zhang, Yongbin Yang, Tao Jiang
Summary: A multifunctional adsorbent FMHs was developed and successfully applied for the simultaneous removal of multiple potentially toxic elements (PTEs) from aqueous solution. FMHs exhibited high adsorption capacity and excellent performance in the presence of various environmental factors. Characterization results confirmed the involvement of various removal mechanisms in the capture of PTEs by FMHs.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Yukai Shen, Fenglian Fu, Bing Tang
Summary: A novel magnetic manganese ferrite@ferrihydrite nanocomposite, synthesized with ethylenediamine (EDA) via co-precipitation method, showed promising results in removing chromium contamination from water. The nanocomposite exhibited stable removal efficiency (& GE; 85.6%) at pH 2.0-9.0 and had a higher adsorption capacity compared to MnFe2O4 and ferrihydrite. The magnetic saturation of the nanocomposite allowed for easy separation and regeneration after the reaction. This research provides references and inspiration for the design of new MnFe2O4-based materials for heavy metal removal from wastewater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Kuo Yang, Jinzhe Li, Zhongkui Zhao, Zhongmin Liu
Summary: A capillary micro-reaction system was used to monitor the initial stage of methane oxidation over platinum catalyst, revealing the presence of oxygenated intermediates. Methane pre-treatment at 600 degrees C was found to shorten the induction period by generating highly active species. Based on these findings and in situ characterizations, a reaction pathway for methane oxidation over Pt was proposed.
Article
Energy & Fuels
Bo Xiong, Yingju Yang, Jing Liu, Junyan Ding, Yuchen Yang
Summary: A density functional theory study was conducted on Cu-M (M = Cd, Zn, Ni, Ag, and Pd) bimetal catalysts for CO2RR and HER, revealing that the Cu-Pd catalyst exhibited outstanding catalytic activity for both HER and CO2RR. The Cu-Cd catalyst at a low Cu/Cd ratio was found to be more favorable for CO2RR than HER. This study provides guidance for designing effective electrocatalysts for CO2RR and HER using Cu-based bimetal materials.
Article
Engineering, Environmental
S. Ambika, Manish Kumar, Lakshmi Pisharody, Milan Malhotra, Gopalakrishnan Kumar, Vandana Sreedharan, Lal Singh, P. Nidheesh, Amit Bhatnagar
Summary: This review comprehensively discusses the potential application of modified biochar in the remediation of Cr(VI) from different environmental matrices, along with its toxicology impacts, tailoring technology, adsorption mechanisms, factors, and the regeneration of spent adsorbents.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yu Li, Liyun Yang, Xinxue Li, Takahiro Miki, Tetsuya Nagasaka
Summary: The nanocomposite adsorbent ZnS-zeolite NaA prepared by ion exchange method showed high removal capacity for Hg2+ and stable adsorption of different ions, indicating its potential for broad application as a Hg2+ adsorbent.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Energy & Fuels
Yingna Du, Chen Huang, Wei Jiang, Qiangwei Yan, Yongfei Li, Gang Chen
Summary: In this study, anionic surfactants modified hydrotalcite was used as a flow improver for crude oil under low-temperature conditions. The modified hydrotalcite showed a significant viscosity reduction effect on crude oil. The mechanism of the modified hydrotalcite on viscosity and pour point of crude oil was explored through characterization and analysis of the modified hydrotalcite and oil samples.
Article
Energy & Fuels
Mohammad Saeid Rostami, Mohammad Mehdi Khodaei
Summary: In this study, a hybrid structure, MIL-53(Al)@MWCNT, was synthesized by combining MIL-53(Al) particles and -COOH functionalized multi-walled carbon nanotube (MWCNT). The hybrid structure was then embedded in a polyethersulfone (PES) polymer matrix to prepare a mixed matrix membrane (MMM) for CO2/CH4 and CO2/N2 separation. The addition of MWCNTs prevented MIL-53(Al) aggregation, improved membrane mechanical properties, and enhanced gas separation efficiency.
Article
Energy & Fuels
Yunlong Li, Desheng Huang, Xiaomeng Dong, Daoyong Yang
Summary: This study develops theoretical and experimental techniques to determine the phase behavior and physical properties of DME/flue gas/water/heavy oil systems. Eight constant composition expansion (CCE) tests are conducted to obtain new experimental data. A thermodynamic model is used to accurately predict saturation pressure and swelling factors, as well as the phase boundaries of N2/heavy oil systems and DME/CO2/heavy oil systems, with high accuracy.
Article
Energy & Fuels
Morteza Afkhamipour, Ebad Seifi, Arash Esmaeili, Mohammad Shamsi, Tohid N. Borhani
Summary: Non-conventional amines are being researched worldwide to overcome the limitations of traditional amines like MEA and MDEA. Adequate process and thermodynamic models are crucial for understanding the applicability and performance of these amines in CO2 absorption, but studies on process modeling for these amines are limited. This study used rate-based modeling and Deshmukh-Mather method to model CO2 absorption by DETA solution in a packed column, validated the model with experimental data, and conducted a sensitivity analysis of mass transfer correlations. The study also compared the CO2 absorption efficiency of DETA solution with an ionic solvent [bmim]-[PF6] and highlighted the importance of finding optimum operational parameters for maximum absorption efficiency.
Article
Energy & Fuels
Arastoo Abdi, Mohamad Awarke, M. Reza Malayeri, Masoud Riazi
Summary: The utilization of smart water in EOR operations has gained attention, but more research is needed to understand the complex mechanisms involved. This study investigated the interfacial tension between smart water and crude oil, considering factors such as salt, pH, asphaltene type, and aged smart water. The results revealed that the hydration of ions in smart water plays a key role in its efficacy, with acidic and basic asphaltene acting as intrinsic surfactants. The pH also influenced the interfacial tension, and the aged smart water's interaction with crude oil depended on asphaltene type, salt, and salinity.
Article
Energy & Fuels
Dongao Zhu, Kun Zhu, Lixian Xu, Haiyan Huang, Jing He, Wenshuai Zhu, Huaming Li, Wei Jiang
Summary: In this study, cobalt-based metal-organic frameworks (Co-based MOFs) were used as supports and co-catalysts to confine the NHPI catalyst, solving the leaching issue. The NHPI@Co-MOF with carboxyl groups exhibited stronger acidity and facilitated the generation of active oxygen radicals O2•, resulting in enhanced catalytic activity. This research provides valuable insights into the selection of suitable organic linkers and broadens the research horizon of MOF hybrids in efficient oxidative desulfurization (ODS) applications.
Article
Energy & Fuels
Edwin G. Hoyos, Gloria Amo-Duodu, U. Gulsum Kiral, Laura Vargas-Estrada, Raquel Lebrero, Rail Munoz
Summary: This study investigated the impact of carbon-coated zero-valent nanoparticle concentration on photosynthetic biogas upgrading. The addition of nanoparticles significantly increased microalgae productivity and enhanced nitrogen and phosphorus assimilation. The presence of nanoparticles also improved the quality of biomethane produced.
Article
Energy & Fuels
Yao Xiao, Asma Leghari, Linfeng Liu, Fangchao Yu, Ming Gao, Lu Ding, Yu Yang, Xueli Chen, Xiaoyu Yan, Fuchen Wang
Summary: Iron is added as a flocculant in wastewater treatment and the hydrothermal carbonization (HTC) of sludge produces wastewater containing Fe. This study investigates the effect of aqueous phase (AP) recycling on hydrochar properties, iron evolution and environmental assessment during HTC of sludge. The results show that AP recycling process improves the dewatering performance of hydrochar and facilitates the recovery of Fe from the liquid phase.
Article
Energy & Fuels
He Liang, Tao Wang, Zhenmin Luo, Jianliang Yu, Weizhai Yi, Fangming Cheng, Jingyu Zhao, Xingqing Yan, Jun Deng, Jihao Shi
Summary: This study investigated the influence of inhibitors (carbon dioxide, nitrogen, and heptafluoropropane) on the lower flammability limit of hydrogen and determined the critical inhibitory concentration needed for complete suppression. The impact of inhibitors on explosive characteristics was evaluated, and the inhibitory mechanism was analyzed with chemical kinetics. The results showed that with the increase of inhibitor quantity, the lower flammability limit of hydrogen also increased. The research findings can contribute to the safe utilization of hydrogen energy.
Article
Energy & Fuels
Zonghui Liu, Zhongze Zhang, Yali Zhou, Ziling Wang, Mingyang Du, Zhe Wen, Bing Yan, Qingxiang Ma, Na Liu, Bing Xue
Summary: In this study, high-performance solid catalysts based on phosphotungstic acid (HPW) supported on Zr-SBA-15 were synthesized and evaluated for the one-pot conversion of furfural (FUR) to γ-valerolactone (GVL). The catalysts were characterized using various techniques, and the ratio of HPW and Zr was found to significantly affect the selectivity of GVL. The HPW/Zr-SBA-15 (2-4-15) catalyst exhibited the highest GVL yield (83%) under optimized reaction conditions, and it was determined that a balance between Bronsted acid sites (BAS) and Lewis acid sites (LAS) was crucial for achieving higher catalytic performance. The reaction parameters and catalyst stability were also investigated.
Article
Energy & Fuels
Michael Stoehr, Stephan Ruoff, Bastian Rauch, Wolfgang Meier, Patrick Le Clercq
Summary: As part of the global energy transition, an experimental study was conducted to understand the effects of different fuel properties on droplet vaporization for various conventional and alternative fuels. The study utilized a flow channel to measure the evolution of droplet diameters over time and distance. The results revealed the temperature-dependent effects of physical properties, such as boiling point, liquid density, and enthalpy of vaporization, and showed the complex interactions of preferential vaporization and temperature-dependent influences of physical properties for multi-component fuels.
Article
Energy & Fuels
Yuan Zhuang, Ruikang Wu, Xinyan Wang, Rui Zhai, Changyong Gao
Summary: Through experimental validation and optimization of the chemical kinetic model, it was found that methanol can accelerate the oxidation reaction of ammonia, and methanol can be rapidly oxidized at high concentration. HO2 was found to generate a significant amount of OH radicals, facilitating the oxidation of methanol and ammonia. Rating: 7.5/10.
Article
Energy & Fuels
Radwan M. EL-Zohairy, Ahmed S. Attia, A. S. Huzayyin, Ahmed I. EL-Seesy
Summary: This paper presents a lab-scale experimental study on the impact of diethyl ether (DEE) as an additive to waste cooking oil biodiesel with Jet A-1 on combustion and emission features of a swirl-stabilized premixed flame. The addition of DEE to biodiesel significantly affects the flame temperature distribution and emissions. The W20D20 blend of DEE, biodiesel, and Jet A-1 shows similar flame temperature distribution to Jet A-1 and significantly reduces UHC, CO, and NOx emissions compared to Jet A-1.
Article
Energy & Fuels
Jiang Bian, Ziyuan Zhao, Yang Liu, Ran Cheng, Xuerui Zang, Xuewen Cao
Summary: This study presents a novel method for ammonia separation using supersonic flow and develops a mathematical model to investigate the condensation phenomenon. The results demonstrate that the L-P nucleation model accurately characterizes the nucleation process of ammonia at low temperatures. Numerical simulations also show that increasing pressure and concentration can enhance ammonia condensation efficiency.
Article
Energy & Fuels
Shiyuan Pan, Xiaodan Shi, Beibei Dong, Jan Skvaril, Haoran Zhang, Yongtu Liang, Hailong Li
Summary: Integrating CO2 capture with biomass-fired combined heat and power (bio-CHP) plants is a promising method for achieving negative emissions. This study develops a reliable data-driven model based on the Transformer architecture to predict the flowrate and CO2 concentration of flue gas in real time. The model validation shows high prediction accuracy, and the potential impact of meteorological parameters on model accuracy is assessed. The results demonstrate that the Transformer model outperforms other models and using near-infrared spectral data as input features improves the prediction accuracy.