Article
Energy & Fuels
Dorcas Linda Ernesto Uaciquete, Takahiro Kato, Hirokazu Okawa, Katsuyasu Sugawara, Risehiro Nonaka
Summary: This study investigated the elution pattern and dissolvable amount of mercury in desulfurization gypsum through batch and semi-batch elution tests. The results revealed that the semi-batch method is more accurate for evaluating mercury elution from desulfurization gypsum.
Review
Engineering, Environmental
Ting Liu, Zhuo Xiong, Peng Ni, Zizhen Ma, Yan Tan, Zishun Li, Shengnan Deng, Yincui Li, Qirong Yang, Huawei Zhang
Summary: This review focuses on the current situation of Hg0 removal on different kinds of adsorbents in coal combustion flue gas, smelting flue gas, and natural gas. Hydrophobic groups, hydrophobic materials, and modification of sulfur/selenium pretreatment and metals loading can effectively overcome the problem of H2O and SO2. Additionally, separation, regeneration, and recovery aspects are explored and summarized, with thermal treatment accompanied by different components being widely adopted as an efficient approach to recover the adsorption ability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Feng Xin, Rihong Xiao, Yongchun Zhao, Junying Zhang
Summary: This research proposes a method to reduce elemental mercury emission from coal-fired power plants by modifying magnetospheres with H2S as a sorbent. The modified magnetospheres show high affinity towards Hg-0 and can achieve over 80% adsorption efficiency. The technology has low cost, high recyclability, and minimal impact on environmental mercury pollution.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Jianping Yang, Yuanyuan Na, Yingchao Hu, Penglin Zhu, Fanyue Meng, Qingjie Guo, Zequn Yang, Wenqi Qu, Hailong Li
Summary: Circulating adsorbents integrating elemental mercury adsorption and oxidized mercury decomposition/desorption processes were used for simultaneous adsorbent recycling and mercury recovery. The formation of granulated adsorbent pellets reduced elutriation in the system. La0.8Ce0.2MnO3 perovskite adsorbent was molded into pellets using an extrusion-spheronization method with microcrystalline cellulose (MC) as a pore-creating template. The pellets showed excellent Hg0 removal efficiency and durability in a wide temperature range, with slight interference from SO2 and H2O and enhancement from O2 and NO. The presence of pore channels in the pellets allowed for efficient Hg0 diffusion and in-situ retention during high-temperature burning.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Environmental Sciences
Sen Liu, Wei Liu, Fen Jiao, Wenqing Qin, Congren Yang
Summary: This article reviews the production and beneficial utilizations of FGD gypsum in China, where the government has implemented numerous desulfurization measures since 2006 to address serious SO2 emissions. With production exceeding 108 tons and continually increasing energy consumption, the properties and applications of FGD gypsum are summarized here.
ENVIRONMENTAL POLLUTION
(2021)
Article
Energy & Fuels
Qingfeng Wang, Dan Wang, Zhonggen Li, Leiming Zhang, Xinbin Feng
Summary: The study revealed that the mercury content in flue gas desulfurization gypsum of coal-fired power plants primarily originates from the flue gas, with a lesser contribution from limestone. The mercury content in gypsum correlates positively with chlorine content and mercury content in coal, while coal characteristics play a significant role in influencing mercury contents in gypsum.
Article
Energy & Fuels
Jianping Yang, Qin Li, Wenbing Zhu, Wenqi Qu, Min Li, Zhengyong Xu, Zequn Yang, Hui Liu, Hailong Li
Summary: This study utilized the abundant mineral chalcopyrite as an efficient trap for Hg-0 sequestration, showing excellent removal performance in a wide temperature range and minimal interference from typical flue gas components. The adsorption capacity and rate of CuFeS2 were significantly higher than commercial activated carbons, attributed to the oxidizing and immobilizing abilities of disulfide ligands, and the sorbent could be regenerated through thermal decomposition, saving operation costs. CuFeS2 is identified as a potential, cost-effective trap for efficient remediation of Hg-0 from coal combustion flue gas.
Article
Engineering, Environmental
Wei Zheng, Zequn Yang, Wenqi Qu, Jianwei Huang, Weizhen He, Jianping Yang, Wanliang Yang, Mengkui Tian, Zhengyong Xu, Hailong Li
Summary: In this study, a feasible synthesis strategy based on mechanical ball-milling procedure was proposed to synthesize (001) surface exposed CuS with high Hg0 adsorption capacity. The controllable nucleus formation and favorable crystalline growth manner under mechanochemical condition resulted in well-structured CuS nanosheets containing abundant under-coordinated sulfur ligands, ensuring the adequate exposure of active sites. The CuS nanosheets showed exceptional Hg0 adsorption capacity and uptake rate, surpassing previous benchmark metal sulfides.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Polymer Science
Mingjing Li, Guodong Huang, Bo Wang, Yi Cui, Binbin Chang, Qiaoqiao Yin, Ming Ge, Shuwei Zhang, Qi Wang, Jiacheng Feng
Summary: The addition of granulated blast furnace slag, fly ash, and solid sodium silicate can significantly improve the compressive strength and setting time of flue gas desulfurization gypsum polymer. Their incorporation promotes the formation of silicate and aluminosilicate minerals, which is the main reason for the increased strength and accelerated coagulation.
Article
Engineering, Environmental
Lu Dong, Hai Wang, Yaji Huang, Jianrui Zha, Haoqiang Cheng, Lingqin Liu, Zhicheng Zhu, Hao Chen, Shouyi Ding, Sheng Wang
Summary: A magnetically recoverable sorbent incorporating γ-Fe2O3 into attapulgite and loaded with CuCl2 was developed for efficient removal of Hg-0 from coal combustion flue gas. The sorbent showed promising results in Hg-0 removal at high temperature, with the mechanism involving O-2 regeneration and Cu/Fe re-oxidation. The sorbent was less affected by NO and SO2, and the presence of HCl and O-2 aided in regeneration for multiple cycles.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Engineering, Environmental
Wei Zheng, Hailong Li, Zequn Yang, Jianping Yang, Wenqi Qu, Fanyue Meng, Yong Feng, Zhengyong Xu, Xueyi Guo
Summary: This review highlights the global concerns over mercury contamination and the advantages of mineral chalcogenides in immobilizing gaseous elemental mercury. It provides an overview of research progress and application conditions of mineral chalcogenides for Hg-0 removal, as well as comparisons of their adsorption performance. Comprehensive discussions on influential factors and mechanisms for Hg-0 removal by different mineral chalcogenides are also presented to guide future research directions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Huan Liu, Zhuo Xiong, Rong Peng, Bengen Gong, Lin Chang, Jianping Yang, Yongchun Zhao, Junying Zhang
Summary: The study investigated the efficacy of CuBr2-TCS as an adsorbent for removing Hg-0 in simulated coal-fired flue gas, demonstrating high removal efficiency. The in-depth exploration of Hg-0 removal performance under different flue gas components proved that CuBr2-TCS has a good removal effect on Hg-0.
Article
Green & Sustainable Science & Technology
Jonghun Lim, Hyungtae Cho, Junghwan Kim
Summary: By optimizing the wet flue gas desulfurization system using recycled waste oyster shells as substitutes for high-grade limestone, efficiency can be improved, costs reduced, and reliance on limited resources decreased. Waste oyster shells can serve as excellent substitutes for high-quality limestone, offering significant environmental and economic benefits.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Horticulture
Dexter Brown Watts, George Brett Runion, Henry Allen Torbert
Summary: Efforts are being made to develop best management practices to reduce nutrient loss in surface water caused by agriculture. Adding flue gas desulfurization (FGD) gypsum as a horticultural media amendment can effectively control phosphorus (P) leaching. Mixing FGD gypsum with the growth medium is the most effective way to reduce P loss, especially when using fast-release fertilizer.
Article
Engineering, Environmental
Wan Yang, Zexin Yin, Lu Zhang
Summary: Through experiments on composting of green waste, it was found that adding silage and flue gas desulfurization gypsum can accelerate the composting process and improve the maturity and nutrient content of the compost product. According to the multi-index matrix analysis, the optimal combination is 45% silage and 2.5% flue gas desulfurization gypsum. This optimal treatment can complete the composting of green waste in 28 days and produce a stable and high-quality compost product.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Agricultural Engineering
Elbager M. A. Edreis, Xian Li, Guangqian Luo, S. W. Sharshir, Hong Yao
BIORESOURCE TECHNOLOGY
(2018)
Article
Energy & Fuels
Renjie Zou, Liang Cao, Guangqian Luo, Zehua Li, Ruize Sun, Xian Li, Hong Yao
Article
Engineering, Chemical
Long Wu, Wenjie Wan, Zhongsheng Shang, Xinyuan Gao, Noriyuki Kobayashi, Guangqian Luo, Zhanyong Li
SEPARATION AND PURIFICATION TECHNOLOGY
(2018)
Article
Thermodynamics
Shan Tong, Li Xiao, Xian Li, Xianqing Zhu, Huan Liu, Guangqian Luo, Nakorn Worasuwannarak, Somrat Kerdsuwan, Bundit Fungtammasan, Hong Yao
ENERGY CONVERSION AND MANAGEMENT
(2018)
Article
Energy & Fuels
Liangkui Jiang, Zehua Li, Juncheng Ouyang, Yuan Fang, Guangqian Luo, Hong Yao
Article
Engineering, Chemical
Zehua Li, Juncheng Ouyang, Guangqian Luo, Hong Yao
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2019)
Article
Energy & Fuels
Juncheng Ouyang, Dikun Hong, Liangkui Jiang, Zehua Li, Huan Liu, Guangqian Luo, Hong Yao
Article
Energy & Fuels
Zehua Li, Renjie Zou, Dikun Hong, Juncheng Ouyang, Liangkui Jiang, Huan Liu, Guangqian Luo, Hong Yao
Article
Engineering, Environmental
Renjie Zou, Guangqian Luo, Can Fang, Haoyu Zhang, Zehua Li, Hongyun Hu, Xian Li, Hong Yao
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2020)
Article
Engineering, Environmental
Yang Xu, Guangqian Luo, Qingzhu Zhang, Wei Cui, Zehua Li, Shibo Zhang
Summary: Novel waste-derived sorbents synthesized through one-step co-pyrolysis of wood and PVC have shown good stability in Hg and halogens removal, with Fe doping further enhancing the stability. Kinetic analysis revealed different rate-limiting steps before and after Fe doping, and water-washing pretreatment can remove loosely-bonded halogens while retaining essential halogens for Hg removal.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Xiaoyu Li, Juan Chen, Yi Xiao, Shouyan Chen, Chunmei Lu, Guangqian Luo, Hong Yao
Summary: Combining quantum chemistry, kinetic simulations, and DTF experiments, the research revealed the transformation behavior of chromium under oxy-coal combustion in the presence of steam and HCl. It was found that HCl promoted the oxidation of chromium to hexavalent CrO2Cl2, while the coexistence of HCl and steam divided the transition of chromium into two stages, ultimately leading to the formation of CrO2Cl2 as the predominant species. The introduction of HCl into the combustion atmosphere induced more chromium release, and the presence of steam reinforced the effect of HCl on chromium transformation.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Zehua Li, Renjie Zou, Yang Xu, Liang Cao, Guangqian Luo, Hong Yao
Summary: The study utilized a self-designed micro fluidized bed reactor and an online char particle sampling system to investigate the kinetics of coal char combustion and gasification. It was found that the reactivity of sampled char in oxy-fuel combustion followed a specific trend with sampling time, while the gasification reactivity increased gradually with sampling time.
Article
Energy & Fuels
Zehua Li, Renjie Zou, Yang Xu, Guangqian Luo, Hong Yao
Summary: This study reported a novel microfluidized bed reactor combined with a solid char particle online sampling system to investigate the effect of CO2/H2O on semi-char properties and reactivity. The results showed that the activation energy of the semi-char increases during oxy-steam combustion, and the reactivity of the semi-char is higher than that of the original coal char in the early combustion stage, with H2O having a greater influence on semi-char reactivity compared to CO2.
Article
Thermodynamics
Zehua Li, Renjie Zou, Yang Xu, Yuan Fang, Guangqian Luo, Hong Yao
Summary: In this study, coal chars with different cooling rates were prepared and characterized, showing that carbon structure tends to be graphitized during cooling and in-situ char has the lowest carbon graphitization. The reactivity of chars decreases with cooling rate, with in-situ char having the highest carbon defects and most active surface area.
COMBUSTION AND FLAME
(2022)
Article
Thermodynamics
Ping Xu, Guangqian Luo, Bi Zhang, Xiaobo Zeng, Yang Xu, Renjie Zou, Rongli Gan, Hong Yao
APPLIED THERMAL ENGINEERING
(2017)
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.