Article
Environmental Sciences
Yuchao Song, Hanyu Tang, Yanjun Yan, Yajie Guo, Hui Wang, Zhaoyong Bian
Summary: This study evaluated the effects of sulfidation and emulsification treatment on the performance of nanoscale zero-valent iron in the reductive dechlorination of trichloroethylene (TCE) in groundwater. The sulfidized and emulsified zero-valent iron (S-EZVI) can sequestrate unreacted TCE and reduce the corrosion of iron. The electric-field-enhanced S-EZVI technology showed improved performance in removing TCE under different pH conditions.
Article
Environmental Sciences
Alena Pavelkova, Vendula Cencerova, Josef Zeman, Vojtech Antos, Jaroslav Nosek
Summary: Electric field assisted remediation using nano iron has shown significant results and economic benefits during pilot applications. This method is based on donating electrons to zero-valent iron with strong reductive capacity. Experimental results demonstrated the generation of ethene and ethane near the anode due to the presence of dissolved Fe2+ ions.
Article
Environmental Sciences
Peng Wang, Zhiqiang Xu, Guilu Zeng, Shuguang Lyu
Summary: This study investigated the degradation of trichloroethylene (TCE) using peroxymonosulfate (PMS) activated by nano-zero-valent iron (nZVI) in the presence of tween-80 (TW-80) or sodium dodecyl sulfate (SDS). Results showed that 87.6% of TCE (with 1.3 g L-1 TW-80) and 89.7% of TCE (with 2.3 g L-1 SDS) were degraded by PMS/nZVI, with significant dechlorination.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Jun Hou, Anqi Wang, Lingzhan Miao, Jun Wu, Baoshan Xing
Summary: This study systematically investigated the effect of NO3- on the degradation of TCE by S-ZVI and its mechanism. The results showed that NO3- did not affect the degradation pathway of TCE, but at high concentrations, it competed for electrons and led to an increase in the production of acetylene. Additionally, the presence of NO3- promoted the formation of Fe3O4, which improved the degradation efficiency of TCE.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Yi Jin, Yaxuan Wang, Xi Li, Ting Luo, Yongsong Ma, Bing Wang, Hong Liang
Summary: This study synthesized the biochar and bentonite-supported nano zero-valent iron (BC-BE-nZVI) composite by the liquid-phase reduction method. The composite was then used to immobilize cadmium, chromium, and lead in simulated contaminated soil. The immobilization efficiencies of the metals were high and their mobility and bioavailabilities were significantly decreased. Stabilized metal species were formed and the soil metabolic function was enhanced.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Song Guo, Huifen Yang, Qiwei Sun, Ge Zhang, Tong Zhao, Yichen Zhou, Xuan Li, Pu Gao
Summary: The novel carbonaceous material (ZVI\NCM) containing micro-nano zero-valent iron was prepared using oily sludge (OS) and iron ore concentrate (IOC) and successfully applied for the remediation of As, Cd, Cu, Pb, and Zn in soil near a smelter. The results showed that the prepared material had high stability and effectively immobilized the heavy metals in the soil. Characterization studies indicated that As was primarily immobilized through complexation and adsorption, while cations were immobilized through chemical precipitation, ion exchange, and reduction. Sequential extraction procedures confirmed the conversion of unstable heavy metal components in the soil to stable ones. This study demonstrates the feasibility of ZVI\NCM prepared using OS for the remediation of soil contaminated with heavy metals.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Tielong Li, Xiao Li, Yaxin Teng, Haitao Wang, Hongwen Sun
Summary: Phosphorus-doped microscale zero-valent iron (P-mZVI) was prepared using ball milling, which significantly enhanced the dechlorination of trichloroethylene (TCE). The degradation rate of TCE doubled with P-mZVI, and the dechlorination pathway shifted towards hydrogenolysis, producing non-toxic products such as cyclohexene and phosphate. These products can potentially stimulate the growth and metabolism of microorganisms.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Biotechnology & Applied Microbiology
Ping Wang, Feng Shen, Ronghua Li, Di Guo, Wen Liang, Tao Liu, Zengqiang Zhang
Summary: This study used zero valent iron (Fe-0) for in-situ remediation of contaminated soil. The results showed that Fe-0 treatment reduced the levels of Cd and Zn in the soil and increased the biomass of soybean and rape. The separated iron-rich substances adsorbed Cd and Zn and generated new iron oxides. This study suggests the feasibility of Fe-0 for soil remediation, and the use of retrievable materials from soil for permanent pollutant removal should be considered in future remediation practices.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Engineering, Environmental
Qing Zhao, Xiaomin Li, Shengtao Xiao, Weihua Peng, Wenhong Fan
Summary: Integrated-remediation technologies using sulfate reducing bacteria (SRB) and nano zero valent iron (nZVI) have shown great potential in immobilizing Cd in contaminated sediments, particularly with higher doses of nZVI. The study identified five typical SRBs that play a significant role in transforming Cd speciation and stabilizing it into sulfide precipitation through dissimilatory sulfate reduction (DSR). The results suggest that nZVI may stimulate SRB bio-immobilization by providing electrons and enhancing enzyme activities during DSR, leading to the formation of Cd-S-Fe complexes.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Engineering, Environmental
S. Krithika Shree, S. Karthick Raja Namasivayam, Arjun Pandian
Summary: Nanoscale zero-valent iron (nZVI) particles are superior nanomaterials that can undergo various chemical reactions, making them effective for removing toxic substances from water bodies. Antibiotics in pharmaceutical effluents are emerging pollutants, posing a threat to human health and the environment. Advanced methods, including the use of nZVI technology, can be employed to effectively remove drug contaminants and achieve sustainable and green wastewater treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Bo Chen, Zhongkuan Wu, Shasha Shi, Shichao Cai, Dezhi Yang, Liwei Yang, Feng He, Liyuan Liang, Zhenyu Wang
Summary: The effects of soil on the degradation of TCE by CMC-S-nZVI particles were studied, and it was found that soil sorption and clay minerals had different effects on iron corrosion and TCE dechlorination. These findings are important for optimizing engineering designs at TCE-contaminated sites.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jianwei Yang, Xiangpeng Tan, Muhammad Shaaban, Yajun Cai, Buyun Wang, Qi'an Peng
Summary: BC-nZVI composites are effective in removing Cr(VI) from contaminated soil while increasing microbial diversity and abundance, with no significant adverse effects on soil quality or microorganisms.
Article
Environmental Sciences
Xiaohui Wang, Jia Xin, Mengjiao Yuan, Fang Zhao, Litao Wang
Summary: This study compared the performance of microscale zero-valent iron, autotrophic hydrogen bacteria, and their coupling system in remediating chlorinated aliphatic hydrocarbon-contaminated groundwater. The results showed that the mZVI-AHB and mZVI systems were more efficient in dechlorination, while the H2-AHB system exhibited higher selectivity in reducing nitrate. After considering factors such as degradation efficiency, reaction products, electron efficiency, and cost, the mZVI-AHB system showed higher potential in sustainable remediation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Weiquan Li, Xueying Lin, Sihao Lv, Weizhao Yin, Zhanqiang Fang, Jingling Huang, Ping Li, Jinhua Wu
Summary: This study investigated the effect of hydrogenotrophic denitrification on cadmium (Cd(II)) removal and column life-span using hydrogen-autotrophic microorganisms and zero-valent iron (Fe-0) filled columns. The results showed that the nitrate-mediated bio-Fe-0 column had a higher Cd(II) removal efficiency and longer service life compared to the bio-Fe-0 and Fe-0 columns. This improvement was attributed to hydrogenotrophic denitrification, which caused more iron corrosion and more secondary mineral generation, providing more reaction sites for Cd(II) adsorption and immobilization. The distribution of reactive zone along the bio-Fe-0 column mediated by nitrate was found to be uneven, with the latter half part identified as a more active region for Cd(II) immobilization.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Ziyu Zou, Ercheng Zhao, Pingzhong Yu, Junjie Jing, Ying Li, Baotong Li, Junxue Wu
Summary: This study investigated the degradation of neonicotinoids in soil using a nanoscale zero-valent iron-activated persulfate process. The results showed that the neonicotinoids could be effectively degraded under optimal conditions, and the degradation pathways were proposed based on identified intermediates.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Engineering, Environmental
Xiaolan Zeng, Bo Li, Runqi Liu, Xiang Li, Tianle Zhu
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Environmental Sciences
Tariq Mehmood, Tianle Zhu, Ishaq Ahmad, Xinghua Li
Article
Chemistry, Physical
Shiyu Hou, Shuaijie He, Tianle Zhu, Jihui Li, Liqiang Ma, Hongda Du, Wanci Shen, Feiyu Kang, Zheng-Hong Huang
Summary: The traditional method of exfoliated graphite production faces challenges in energy conservation and pollution abatement. A new preparation method under room temperature conditions has been developed to acquire high-performance exfoliated graphite with significant potential for industrial applications.
JOURNAL OF MATERIOMICS
(2021)
Article
Chemistry, Physical
Wei Hong, Mingpan Shau, Tianle Zhu, Haining Wang, Ye Sun, Fangxia Shen, Xiang Li
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Environmental Sciences
Mutong Niu, Fangxia Shen, Feng Zhou, Tianle Zhu, Yunhao Zheng, Yi Yang, Ye Sun, Xinghua Li, Yan Wu, Pingqing Fu, Shu Tao
ENVIRONMENT INTERNATIONAL
(2020)
Article
Environmental Sciences
Runqi Liu, Hua Song, Bo Li, Xiang Li, Tianle Zhu
Summary: The simultaneous removal performances of toluene and styrene under non-thermal plasma and NTP-catalysis were studied, revealing that benzaldehyde from styrene inhibited the conversion of toluene. The introduction of Cu-doped MnO2 materials significantly improved VOCs removal efficiency and reduced O-3 generation.
Article
Environmental Sciences
Mutong Niu, Feng Zhou, Yi Yang, Ye Sun, Tianle Zhu, Fangxia Shen
Summary: This study investigated the characteristics of airborne archaea in Beijing during springtime, revealing soil as the primary source for releasing archaea into the environment. It was found that air quality and sandstorms can impact the abundance of airborne archaea, and dispersal-related neutral processes play a crucial role in shaping the structure of the archaeal assembly.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Huifang Tian, Changzhi Chen, Tianle Zhu, Bingjun Zhu, Yifei Sun
Summary: A novel iron-based bimetallic nanoparticles supported on activated carbon were synthesized and employed as an activator in persulfate oxidation for PAH remediation. Characterizations of the synthetic material indicated excellent properties, and mechanisms of PAH oxidation were discussed in the reaction system of Fe-Ni/AC activated persulfate.
Article
Environmental Sciences
Yong Yin, Dong Lv, Tianle Zhu, Xinghua Li, Ye Sun, Shuaishuai Li
Summary: The study investigated the removal and transformation behaviors of unconventional air pollutants in various facilities of cement kiln-end, showing different impacts of each installation on the concentrations of PAHs, heavy metals, and carbonyl compounds. The results indicated that SP boiler significantly decreased the concentrations of PAHs and heavy metals, while raw mill and baghouse filter accelerated the volatilization and removal of compounds. Additionally, SCR-DeNO(x) system also played a role in removing some gas-phase PAHs and carbonyl compounds.
Article
Engineering, Chemical
Feng Zhou, Mutong Niu, Yunhao Zheng, Ye Sun, Yan Wu, Tianle Zhu, Fangxia Shen
Summary: Exposure to indoor airborne microbiomes is closely linked to human health. In this study, indoor bioaerosols in winter Beijing were characterized, showing lower concentrations compared to outdoor bioaerosols. The community structures of indoor bioaerosols were distinct from outdoor ones and were differently affected by ambient air pollution, with significant changes observed in indoor fungal community impacted by hazy air pollution.
JOURNAL OF AEROSOL SCIENCE
(2021)
Article
Chemistry, Physical
Wei Hong, Jinzhu Ma, Tianle Zhu, Hong He, Haining Wang, Ye Sun, Fangxia Shen, Xiang Li
Summary: An innovative Li-K-OMS-2 catalyst with specific non-oxygen vacancy sites was reported for improved water resistance in ozone decomposition applications. This catalyst showed superior performance with only a 10% decrease in ozone conversion after 6 hours of reaction under high humidity conditions, outperforming currently documented MnO2-based catalysts. The findings represent a critical step towards the rational design and synthesis of high water-resistant catalysts for ozone decomposition.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Shiyu Hou, Tianle Zhu, Wanci Shen, Feiyu Kang, Michio Inagaki, Zheng-Hong Huang
Summary: Exfoliated graphite (EG) blocks with high sorption capacities for diesel oil can be prepared by a specific method and can undergo adsorption-desorption cycles using compression-release, showing good performance compared to traditional methods. The blocks also have sufficient mechanical strength for continuous oil removal from water surfaces and can effectively remove high viscosity crude oil through Joule heating. The high hydrophobicity and lipophilicity of EG allows for selective oil removal from water.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Polymer Science
Yuan Zhao, Seyedarash Moshtaghibana, Tianle Zhu, Kehinde A. Fayemiwo, Adam Price, Goran T. Vladisavljevic
Summary: Monodispersed polymeric microcapsules loaded with CO2 solvents or chelating agents were successfully produced by capillary microfluidics. The poly(HDDA) shell exhibited better mechanical stability and resistance to shell buckling, while the NOA81 and PDMS shells underwent morphological changes during freeze drying. Embedding carbon-based nanomaterials into the PDMS matrix improved the storage stability and buckling resistance of PDMS shells. All fabricated shells showed thermal stability up to 300 degrees C.
JOURNAL OF POLYMER SCIENCE
(2022)
Article
Engineering, Environmental
Shiyu Hou, Yiliang Tang, Tianle Zhu, Zheng-Hong Huang, Yingshu Liu, Ye Sun, Xiang Li, Fangxia Shen
Summary: This study investigated the effects of pore size on the adsorption capacity and adsorption selectivity of toluene and naphthalene through molecular simulation and experimental investigation. The results showed that the adsorption capacity of both compounds increased and then decreased with increasing pore size. Naphthalene exhibited higher adsorption energy and stability compared to toluene.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Si Jiang, Teng Li, JiKai Zheng, Hao Zhang, Xiang Li, Tianle Zhu
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2020)