Article
Engineering, Environmental
Yi Wang, Binjuan Li, Furong Xue, Wenhuai Wang, Xiaozhong Huang, Zhen Wang
Summary: This study investigated the performance of a continuous tower biofilter reactor (TBFR) with a large height-to-diameter ratio of 13 in treating landfill leachate. The results showed high removal rates of total nitrogen and chemical oxygen demand, with optimal reaction conditions in different zones along the reactor. The TBFR demonstrated effective treatment of landfill leachate by creating distinct aerobic and anaerobic zones in a single reactor.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Jingang Qiu, Xiyao Li, Yongzhen Peng, Hao Jiang
Summary: This study established a two-stage combined process of partial nitrification-Anammox (PNA) and partial denitrification-Anammox (PDA) for advanced nitrogen removal from landfill leachate. The system achieved high nitrogen removal efficiency (NRE), with PNA and PDA contributing significantly. The study provides valuable insights for the practical application of PNA-PDA processes in landfill sites.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Gamal K. Hassan, Fatma A. El-Gohary
Summary: A proposed combined process of partial nitritation followed by anammox was used to treat high-pollution municipal landfill leachate, showing potential advantages in increasing treatment capacity. Studies revealed ammonia reduction up to 85% and nitrite reduction almost 99% in the anammox reactor, with Broccadia species responsible for the anammox process.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Agricultural Engineering
Xiaowu Huang, Wenkui Mi, Hiroaki Ito, Yasunori Kawagoshi
Summary: Partial nitritation/Anammox was effectively applied to treat NaCl-amended landfill leachate, achieving robust nitrogen removal at varying salinities. The dynamics of Anammox bacteria were influenced by salinity variations, with different genera exhibiting dominance under different salinity levels. Key factors such as high nitrite affinity and specific functionalities facilitated certain bacteria's dominance in saline environments, enhancing the efficiency of nitrogen removal processes. Co-occurrence networks indicated beneficial symbiotic relationships contributing to the dominance of specific genera.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Zhizhan Luo, Yong Li, Bohan Chen, Mengen Lei, Naixin Zhang, Xiaolei Zhang, Ji Li
Summary: Partial denitrification (PD) is a stable and effective approach for NO2-N accumulation, and PD/Anammox (PD/A) is a promising nitrogen removal process. This study investigated the effects of free ammonia (FA) on PD bacteria and revealed that low FA concentration enhanced NO2-N reduction rate, while high FA level inhibited PD bacteria. The results confirmed the feasibility of PD/A process in high FA wastewater treatment.
Article
Agricultural Engineering
Hao Jiang, Pei Yang, Zhong Wang, Shang Ren, Jingang Qiu, Haoran Liang, Yongzhen Peng, Xiyao Li, Qiong Zhang
Summary: The study utilized a novel PnA/PdA SBBR to achieve efficient nitrogen removal from landfill leachate, by increasing DO and continuous carbon source feeding. The combined partial nitrification and partial denitrification processes synergized to significantly enhance nitrogen removal efficiency. Ammonia oxidation bacteria and Anammox bacteria showed comparable activities during aerobic period, while organic carbon redirection from complete denitrification to partial denitrification occurred during anoxic period.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Hao Jiang, Xiyao Li, Fangzhai Zhang, Zhong Wang, Shang Ren, Jingang Qiu, Shuying Wang, Yongzhen Peng
Summary: This study established a novel step-draining based partial nitrification-denitrification and Anammox system for advanced nitrogen removal from mature landfill leachate. By separating partial nitrification and denitrification through step-draining, a high nitrogen removal rate was achieved. The NH4+ to NO2- ratio could be easily controlled by adjusting the volume ratio of effluents from the PND reactor. The presence of Brocadia, Kuenenia, and Jettenia in the AMX reactor contributed significantly to nitrogen removal.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Shenhua Yang, Yongzhen Peng, Shujun Zhang, Xiaoyu Han, Jialin Li, Liang Zhang
Summary: This study analyzed and compared the biofilm structure, performance, and nitrogen removal pathways of microporous and macroporous carriers from a full-scale partial nitritation/anammox reactor. Microporous carriers had thicker biofilms, higher biomass, and nitrogen removal efficiency due to the integration of denitrifying and anammox bacteria, while macroporous carriers had thinner biofilms, lower microbial richness, but strong network correlation among genera.
BIORESOURCE TECHNOLOGY
(2021)
Review
Engineering, Environmental
Peng Wu, Junjiang Chen, Vijay Kumar Garlapati, Xingxing Zhang, Francis Wani Victor Jenario, Xiang Li, Wenru Liu, Chongjun Chen, Tejraj M. Aminabhavi, Xiaonong Zhang
Summary: This study presents a comprehensive review of the anammox process, the advancements in nitritation and denitratation processes, and proposes a novel wastewater treatment method for efficient nitrogen removal.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Hao Jiang, Zhong Wang, Shang Ren, Jingang Qiu, Xiyao Li, Yongzhen Peng
Summary: Combining SFL-driven PD with two-stage Anammox process improved nitrogen removal efficiency and rate, with a high nitrate to nitrite transformation ratio achieved. Key genera related to degradation of SBO, PD, and Anammox were enriched, showing a novel insight for advanced nitrogen removal.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Agricultural Engineering
Eli Hendrik Sanjaya, Yujie Chen, Yan Guo, Jiang Wu, Hong Chen, Mohd Fadhil Md Din, Yu-You Li
Summary: The study successfully implemented the SNADCO method in an air-lift moving bed biofilm reactor for treating digested fish processing wastewater, showing advantages in handling high ammonia concentration and organic compounds. The nitritation and anammox route were predominant in nitrogen removal, while COD oxidation and microbe proliferation played the main role in COD removal.
BIORESOURCE TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Chihao Lin, Xiangmin Xiao, Yu-You Li, Jianyong Liu
Summary: Anaerobic ammonium oxidation (anammox) technology is seen as a promising alternative for wastewater treatment, with partial denitrification anammox (PDA) and partial nitritation anammox (PNA) being the mainstream processes. Comprehensive evaluation of their economic and environmental benefits is essential. The study proposed and analyzed two plant-wide processes, and showed that high rate activated sludge-PNA (HRAS-PNA) was more energy-efficient and cost-effective compared to chemically enhanced primary treatment-PDA (CEPT-PDA), with a significant decrease in total environmental impacts.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Environmental Sciences
Bo Wang, Xin Qiao, Feng Hou, Tao Liu, Hongtao Pang, Yuanyuan Guo, Jianhua Guo, Yongzhen Peng
Summary: A pilot-scale system integrating Partial Nitritation and simultaneous Anammox, Denitrification and Sludge Fermentation (PN + ADSF) process was developed to treat real municipal wastewater. The system achieved desirable total inorganic nitrogen (TIN) concentrations in the effluent and sludge reduction efficiency simultaneously. The characterization on microbial communities revealed the dominant functional bacteria for anammox and denitrification.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Yongyuan Yang, Chenjia Shao, Yaping Guo, Ze Liu, Kristof Demeestere, Stijn Van Hulle
Summary: The study demonstrated the potential of a one-stage partial nitrification-Anammox process (PNA) to effectively remove nitrogen and organics from leachate, with up to 96% of total nitrogen and 43% of COD being removed. Fluorescence analysis revealed insights into the dynamics of influent fluorophores, seasonal variations, and the preferential removal of protein-like compounds. Oxygen supply was found to promote the degradation of protein-like compounds, with potential implications for aerobic oxidation pathways. Additionally, fluorescence was suggested as a potential indicator for biodegradable organics, showing strong correlations with biodegradable chemical oxidation demand (BCOD).
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Fangzhai Zhang, Yongzhen Peng, Zhong Wang, Hao Jiang, Shang Ren, Jingang Qiu
Summary: The study applied Partial Nitrification-Anammox/denitratation (PNAD) process to co-treat mature landfill leachate with municipal sewage for 300 days, achieving satisfactory effluent quality with Anammox and denitrification contributing to main nitrogen removal efficiency. The study also confirmed that nitrate generated during the process could be reduced to nitrite and reused, highlighting the potential for sustainable nitrogen removal.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xuexia Wang, Shaoqi Zhou, Xiangning Bu, Chao Ni, Guangyuan Xie, Yaoli Peng
Summary: The study demonstrated that coarse coal particles can greatly enhance the flotation of fine coal by accumulating or adhering to them, as the total interaction between the two types of particles was found to be attractive based on the theoretical calculation of EDLVO.
SEPARATION SCIENCE AND TECHNOLOGY
(2021)
Article
Ecology
Jing Li, Weixin Chen, Wei Zhou, Yao Wang, Maocheng Deng, Shaoqi Zhou
Summary: The study found that two pyrene-degrading strains could enhance the degradation efficiency of pyrene in co-incubation, with sodium citrate as a co-metabolic carbon source promoting the degradation process. The mixed bacteria had a better effect than any single bacteria, suggesting a synergistic enhancement of degradation efficiency.
Article
Polymer Science
Ke Zheng, Shaoqi Zhou, Zuqin Cheng, Guoru Huang
Summary: The study investigates the performance improvement of CC blend in FO membranes, showing enhanced porosity and hydrophilicity in substrates with the introduction of CC. The rejection layer presents better morphology, with the optimal blend ratio of 10% CC.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Environmental Sciences
Yimin Fan, Xiaojun Niu, Dongqing Zhang, Zhang Lin, Mingli Fu, Shaoqi Zhou
Summary: Phosphine production in anaerobic digestion was found to mainly occur during logarithmic microbial growth, with dehydrogenase and hydrogen playing key roles. The abundance of Ruminococcaceae and Escherichia was observed to promote phosphine generation. Metabolic pathway analysis revealed associations between phosphine formation and genetic information processing, biosynthesis of cofactors, prosthetic groups, electron carriers, and vitamins.
Article
Environmental Sciences
Jing Hu, Chengbin Zhu, Yunchuan Long, Qin Yang, Shaoqi Zhou, Pan Wu, Juan Jiang, Wei Zhou, Xuejun Hu
Summary: This study investigated the interaction between dissolved heavy metals and coexisting chemical factors in karst wetland waters by analyzing surface water samples from Caohai Wetland. Results indicated that pH, dissolved oxygen, electrical conductivity, SO42-, and HCO3- were the main factors influencing heavy metals. The main cations were Ca2+ and the main anion was HCO3-. These findings provide valuable geochemical information for assessing and managing heavy metal pollution in water.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Yunchuan Long, Juan Jiang, Xuejun Hu, Jing Hu, Chunguang Ren, Shaoqi Zhou
Summary: The study investigated the response of sediment microbial communities in Caohai Lake to anthropogenic activities and found that physicochemical changes caused by human activities may influence enzyme activities in a non-linear pattern. Although there were few differences in alpha diversity indices between high and low disturbed areas, clear disparities in microbial community composition and beta-diversity analysis were observed. The intensity of anthropogenic impacts in Caohai was found not to have reached potential thresholds, and the best distinguish biomarkers between the two areas were not necessarily the ones with high microbial abundance.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
D. Liu, S. Zhou
Summary: The study showed that phosphorus can be efficiently recovered from glyphosate-rich wastewater through chemical coagulation.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Wangde Deng, Dongqing Zhang, Xiaoxian Zheng, Xingyao Ye, Xiaojun Niu, Zhang Lin, Mingli Fu, Shaoqi Zhou
Summary: Marble waste, sepiolite, and agricultural waste were used to synthesize two modified-biochar composites for phosphate removal. These composites exhibited excellent adsorption performance and can be applied as fertilizer to increase soil fertility.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Chemical
Xuexia Wang, Xiangning Bu, Chao Ni, Shaoqi Zhou, Xiaolin Yang, Jing Zhang, Muidh Alheshibri, Yaoli Peng, Guangyuan Xie
Summary: Scrubbing is a suitable method for cleaning fine slime on microcrystalline graphite surface and improving its flotation performance. This study found that the particle size of the scrubbing medium is the most important factor influencing the enrichment efficiency of microcrystalline graphite. The optimal conditions for the scrubbing process were determined and confirmed through testing.
MINERALS ENGINEERING
(2021)
Article
Engineering, Chemical
Meng Li, Juan Zhou, Yong-Guang Bi, Shao-Qi Zhou, Ce-Hui Mo
Summary: The polypyrrole/sewage sludge carbon electrode showed excellent electrochemical performance in removing Cr(VI) and releasing bio-energy in microbial fuel cells. It exhibited low charge transfer resistance and high electrochemical activity, leading to stable Cr(VI) removal and power production. This composite material can serve as an effective and low-cost catalyst for accelerating Cr(VI) reduction and enhancing bio-power production.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Yunchuan Long, Xuejun Hu, Juan Jiang, Jing Hu, Chengbin Zhu, Shaoqi Zhou
Summary: The cultivation of different aquatic plants in sediment can affect the sorption-desorption behaviors of phosphorus, with differences observed between submerged plants like Hydrilla verticillata and emerged plants like Scripus triqueter. The study suggests that the growth of submerged plants may enhance P retention capacity and reduce release risk in sediments.
Article
Engineering, Chemical
Ke Zheng, Shaoqi Zhou, Zuqin Cheng, Guoru Huang
Summary: The study shows that introducing QPPO into the substrate is a sensible strategy for fabricating high-performance TFC FO membranes, as it improves the structure and performance of the membranes and enhances FO performance.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Environmental Sciences
Yang Liu, Feiyan Liu, Kylie Fei Dong, Yongning Wu, Xingfen Yang, Jintao Yang, Hong Tan, Xiaojun Niu, Xinyuan Zhao, Gexin Xiao, Shaoqi Zhou
Summary: The blood lead levels of children in China are still notably high in many areas, primarily due to lead pollution from industries like lead mining and recovery. Some regions have children with blood lead levels exceeding the standard, which requires attention.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Runyuan Zhang, Xiaoxian Zheng, Dongqing Zhang, Xiaojun Niu, Jinlin Ma, Zhang Lin, Mingli Fu, Shaoqi Zhou
Summary: The study showed that the natural endogenous minerals in biochar can promote the formation of porous and defective structures, increase carbonization and graphitization degree, and exhibit higher catalytic efficiency in the activation of persulfate for tetracycline degradation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Xiaomin Xu, Yongqing Zhang, Shaoqi Zhou, Renfeng Huang, Shaobin Huang, Hainan Kuang, Xianlin Zeng, Shuaifei Zhao
Summary: The study investigated the use of manganese oxyhydroxide (MnOOH) as an activator for persulfate (PS) to degrade p-chloroaniline (PCA) from wastewater. Results showed that higher MnOOH and PS addition enhanced PCA degradation efficiency, while the degradation efficiency was slightly inhibited as the initial pH increased from 3 to 9. This research provides insights into the activation mechanism of PS by manganese oxide and supports the practical application of AOPs of manganese-based materials for wastewater treatment.
Article
Engineering, Environmental
Xingxing Hu, Lingjie Liu, Yanmeng Bi, Lu Li, Chunsheng Qiu, Jingjie Yu, Shaopo Wang
Summary: In this study, the impact of exogenous folate on the start-up process of single-stage partial nitritation-anammox (SPNA) was evaluated using two lab-scale reactors. The results showed that folate addition can enhance nitrogen removal rate, extracellular polymeric substances production, hydrazine oxidase and dehydrogenase activity, as well as the relative abundance of Candidatus Brocadia.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Shaocang He, Tingting Shen, Jing Sun, Haoqi Pan, Chenxu Sun, Tianpeng Li, Runyao Li, Enshan Zhang
Summary: A novel process of acid leaching neutralization was developed for the preparation of inorganic polymeric composite ferric aluminum silicate coagulant (CFAS) using solid waste coal gasification coarse slag (CGCS). The optimized preparation process was determined through single-factor experiment and the performance of CFAS was evaluated for domestic sewage treatment. The results showed that CFAS exhibited excellent coagulation ability and achieved significant removal efficiency for turbidity, ammonia nitrogen, and chemical oxygen demand.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Kinga Szatmari, Sandor Nemeth, Alex Kummer
Summary: In this article, a resilience-based reinforcement learning approach is proposed to address the potential thermal runaway issue in batch reactors. By calculating the resilience metric for reactors and utilizing Deep Q-learning to decide when to intervene in the system, resilient-based mitigation systems can be effectively developed.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Bingyou Jiang, Qi Yao, Mingqing Su, Jingjing Li, Kunlun Lu, Dawei Ding, Han Hong
Summary: This study investigates the inhibitory characteristics and mechanisms of ABC powder on coal powder explosion. The addition of ABC powder significantly decreases the maximum explosion pressure and can completely suppress coal dust explosions. The study also reveals the thermal decomposition characteristics and reaction kinetics of the mixed system.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Kubilay Bayramoglu, Mustafa Nuran
Summary: This study examines the feasibility of using pyrolytic oil from waste tires as fuel in diesel engines, and evaluates its energy, exergy, and sustainability. The results indicate that pyrolytic oil has potential as a renewable fuel source with relatively high thermal efficiency.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Xinru Duan, Yejia Lv, Jiaxing Hong, Jianzhong Wu, Jia Zhang, Yang Yue, Guangren Qian
Summary: This study successfully prepared a tube reactor with optimized catalyst formula, which showed good performance in removing dioxins and other pollutants in the experiments.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Jiaoyang Du, Xueming Dang, Xiaorong Gan, Xin Cui, Huimin Zhao
Summary: In this study, a photocatalyst-enzyme hybrid system was constructed, which solved the issue of enzyme inactivation caused by high concentration of H2O2 through photocatalytic in-situ H2O2 production, and improved the stability and catalytic efficiency of the enzyme. The effectiveness of the system in treating phenolic EDCs was confirmed through experiments.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Fu-Rong Xiu, Longsheng Zhan, Yingying Qi, Xinyue Lei, Jiali Wang, Haipeng Zhou, Wenting Shao
Summary: This study developed a synergetic and high-efficiency treatment of waste tantalum capacitors (WTCs) and polyvinyl chloride (PVC) using subcritical water process. The treatment significantly reduced the temperature and reaction time for metal tantalum recovery from WTCs, and improved the dechlorination efficiency of PVC. The optimized conditions resulted in 100% resin conversion efficiency of WTCs and 97.39% dechlorination efficiency of PVC. The interaction between decomposition products of WTCs and PVC produced a high level of benzoic acid.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Bingda Li, Jiaming Song, Yuting Li, Chaoying Meng, Shuxian Wang, Linghao Zong, Honggang Ye, Yishuai Jing, Feng Teng, Peng Hu, Haibo Fan, Guangde Chen, Xin Zhao
Summary: CdPS3 nanosheets, especially those exfoliated by sodium cholate, have shown highly efficient photocatalytic degradation performance. The strong dark adsorption and dye-sensitized photocatalytic properties of CdPS3 nanosheets contribute to high degradation efficiencies of various pollutants.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Dongxu Ouyang, Yimei Pang, Bo Liu, Zhirong Wang
Summary: This study investigates the thermal runaway features of lithium-ion cells under tunnel conditions, considering different states of charge and tunnel ceilings. The results show that the tunnel visibility is affected by the smoke generated during thermal runaway, and the shape of the tunnel ceiling influences the temperature rise differently.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)