Article
Engineering, Environmental
Ziang Su, Junting Zhao, Zheng Lu, Mengdan Wang, Congcong Guo, Xue Song, Xuebai Guo, Ming Cai, Zhenjun Wu
Summary: This study investigated the effects of different temperature conditions on nitritation denitrification. The results showed that stepwise cooling facilitated a faster start-up of the process and achieved higher nitrite accumulation compared to continuous low temperature conditions. Additionally, lower temperatures significantly inhibited denitrification activity.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
V Bakos, B. Gyarmati, P. Csizmadia, S. Till, L. Vachoud, P. Nagy Gode, G. M. Tardy, A. Szilagyi, A. Jobbagy, C. Wisniewski
Summary: The study aims to investigate the relationship between sludge floc structure and related rheological properties and develop a modeling protocol to improve energy efficiency of sludge pumping in different floc structure scenarios. The results identified the correlation between rheological properties and floc structure transformations, and the Herschel-Bulkley model was found to be the most appropriate for describing the behavior.
Article
Environmental Sciences
Chenyang Ma, Wei Zeng, Shuangshuang Li, Xiaojing Peng, Yongzhen Peng
Summary: The performance of thiosulfate-driven denitrification (TDD) granule reactor and the mechanism of granule sludge bulking were studied. The results showed that granule bulking occurred under high nitrogen loading rates, which led to changes in granule structure and decline in settling property, permeability, and nitrogen removal. By using an intermittent reduction strategy, excess amino acids in sulfur-oxidizing bacteria were consumed through microbial growth-related metabolism, resulting in increased nitrogen removal rate and stable performance in the long term. These findings provide insights for preventing granule bulking and guiding the practical application of the TDD process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Gang Guo, Tianwei Hao
Summary: The study aimed to optimize the granulation of SOAD sludge by adjusting reactor configuration and mixing mode. Results showed dense and compact granules developed in Reactor C, leading to better nitrate removal and sulfur conversion performance.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Engineering, Environmental
Xin Lu, Ge Yan, Liang Fu, Bin Cui, Jinfeng Wang, Dandan Zhou
Summary: This paper critically reviews the limitations of classical bulking hypotheses and traditional control methods in dealing with filamentous bulking issues. It provides an overview of recent studies on quorum sensing (QS) and quorum quenching (QQ) techniques to understand and control filamentous bulking. The paper also suggests further research and development of QQ strategies for precise bulking control.
Article
Environmental Sciences
Mingjing Zeng, Yu Zeng, Binchao Zhang, Yuanyuan Cheng, Bei Long, Junfeng Wu, Shuai Ren, Yong Liu
Summary: The performance of endogenous/exogenous nitrification and denitrification in treating inorganic wastewater with high ammonia nitrogen concentration was investigated. It was found that the addition of external carbon sources improved the adaptability of aerobic granules and increased the removal efficiency of total inorganic nitrogen (TIN). The coupling of endogenous/exogenous nitrification and denitrification reduced the consumption of aeration, saved external carbon source dosage, and decreased alkalinity consumption. This study provides an alternative option for treating wastewater from ionic rare earth mines.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Environmental Sciences
Jian Cheng, Liang Qiao, Wen Xu, Yulan Qian, Yiyang Ge, Ting Xia, Yan Li
Summary: This study found that a Ni2+ concentration of 0.5 mg/L is beneficial for the denitrification efficiency of Anammox bioreactors, but concentrations higher than 2 mg/L can lead to decreased removal efficiency of ammonia nitrogen and nitrite nitrogen. Additionally, Ni2+ concentration also influences microbial quantities, dehydrogenase activity, and bacterial community structure.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Engineering, Environmental
Sven Poelmans, Lennert Dockx, Karina Seguel Suazo, Dorothee Goettert, Jan Dries
Summary: This study investigated the implementation of an anaerobic feeding strategy for high-salinity petrochemical wastewater, resulting in the growth of storage-capable microorganisms and the formation of denser and better settling sludge particles.
WATER SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Mengfei Wu, Meijia Zhang, Liguo Shen, Xinhua Wang, Deng Ying, Hongjun Lin, Renjie Li, Yanchao Xu, Huachang Hong
Summary: This study compared the fouling behaviors of a membrane bioreactor (MBR) operated at normal and sludge bulking stages, and explored the different mechanisms behind these behaviors. The results showed that the MBR could be stably operated for about 60 days without membrane cleaning in the normal stage, while daily membrane cleaning was required in the sludge bulking stage. Further characterizations revealed that the bulking sludge had lower dewaterability, smaller particle size, higher fractal dimension, higher viscosity, abundant filamentous bacteria, and different types of extracellular polymer substances (EPS). It was suggested that microbial community transition was responsible for the occurrence of sludge bulking, which in turn affected membrane fouling. Based on these findings, it was proposed that providing extra force to offset a chemical potential gap caused by foulant layer structure transition during sludge bulking is necessary to sustain filtration and prevent extremely high specific filtration resistance (SFR).
Article
Environmental Sciences
K. Bernat, M. Zaborowska, M. Zielinska, I. Wojnowska-Baryla, W. Ignalewski
Summary: The study found that sequencing batch biofilm reactors are effective in removing pollutants when treating real leachate from biodegradable municipal solid waste, with the type of carriers impacting the occurrence of denitrification phases.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Youqi Tao, Linjing Li, Jianyong Ning, Wenlai Xu
Summary: In this study, the feasibility of fast start-up of PDGS was explored by controlling nitrogen load rate and electron donor starvation. PD-UASB reactor was successfully initiated within 48 days, achieving good sludge granulation and reducing the concentration of ammonia nitrogen and nitrite.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Engineering, Environmental
Itay Keisar, Chaitanyakumar Desitti, Michael Beliavski, Razi Epsztein, Sheldon Tarre, Michal Green
Summary: This study demonstrated the successful removal of high nitrate concentrations from groundwater using a novel pressurized hydrogenotrophic denitrification reactor, while preventing nitrogen gas accumulation in the reactor's headspace. By connecting the main reactor to an external degassing unit and implementing liquid recirculation, steady-state nitrogen and hydrogen gas partial pressures were maintained, achieving nitrate removal rates over 97% with denitrifying rates up to 6 g N/L-reactor/d under both freshwater and brine conditions. The dynamic conditions in the reactor system led to reduced external recirculation flow requirements and greater than expected hydrogen utilization rates of over 93%.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Agricultural Engineering
Xiangchen Li, Rui Du, Jingwen Zhang, Shuying Wang, Yongzhen Peng
Summary: This study combined nitrogen conversion, granular characteristics, and microbial dynamics to reveal the longitudinal heterogeneity of anammox-UASB. It was found that the bottom zone had larger and more mineralized granules, while the middle zone had smaller and more active granules. By combining partial denitrification and anammox, the performance in the top zone was improved.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Environmental
Zhengzhe Zhang, Yu Zhang, Zhijian Shi, Yinguang Chen
Summary: This study unraveled the accumulation of hydroxylamine in various nitrification systems and its potential mechanism in regulating the subsequent denitrification process. Hydroxylamine immediately induced nitrite accumulation by inhibiting the activities of nitrite reductases in activated sludge. Long-term exposure to hydroxylamine accelerated the functional transformation from denitrification to denitratation under low C/N conditions. Genomic analysis revealed the enrichment of a denitrifier species Thauera aminoaromatica TJ127, which was responsible for acetate storage and nitrate reduction. These findings suggest that hydroxylamine released during nitrification may interfere with denitrification metabolism, but its continuous accumulation is beneficial for achieving denitratation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Seow Wah How, Choo Xiang Ting, Jing Ying Yap, Ching Yi Kwang, Chee Keong Tan, Wilasinee Yoochatchaval, Kazuaki Syutsubo, Adeline Seak May Chua
Summary: This study determined the optimal C/N ratio for biological nitrate removal and successfully demonstrated high-rate nitrate removal using an USB reactor, providing a promising technology for DWTPs to pre-treat raw water contaminated with nitrate.
SUSTAINABLE ENVIRONMENT RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Umair Azhar, Rimsha Yaqub, Huateng Li, Ghulam Abbas, Yongkang Wang, Jian Chen, Chuanyong Zong, Anhou Xu, Zhang Yabin, Shuxiang Zhang, Bing Geng
ARABIAN JOURNAL OF CHEMISTRY
(2020)
Article
Agricultural Engineering
Yanan Yin, Chao Yang, Jie Gu, Xiaojuan Wang, Wei Zheng, Ru Wang, Xiaochang Wang, Rong Chen
BIORESOURCE TECHNOLOGY
(2020)
Article
Physics, Multidisciplinary
G. Mustafa, G. Abbas, M. R. Shahzad, Xia Tie-Cheng
CANADIAN JOURNAL OF PHYSICS
(2020)
Article
Physics, Multidisciplinary
G. Abbas, M. R. Shahzad
CANADIAN JOURNAL OF PHYSICS
(2020)
Review
Engineering, Environmental
Shijie Li, Xiaoqing Dang, Xin Yu, Ghulam Abbas, Qian Zhang, Li Cao
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Agronomy
Zartash Fatima, Atique-ur-Rehman, Ghulam Abbas, Pakeeza Iqbal, Iqra Zakir, Muhammad Azam Khan, Ghulam Mujtaba Kamal, Mukhtar Ahmed, Shakeel Ahmad
Summary: Climate warming is impacting the phenology, growth and productivity of diverse cropping systems. Using the long-term observed phenological changes of chickpea-mungbean system (CMS) to determine strategies to minimize negative climate change impacts. Phenological stages and phases of both crops are negatively correlated with rising temperatures, with newly evolved cultivars of pulses showing potential to offset some of the temperature-induced changes in phenology.
INTERNATIONAL JOURNAL OF PLANT PRODUCTION
(2021)
Article
Agronomy
Ghulam Abbas, Muhammad Amjad, Muhammad Saqib, Behzad Murtaza, Muhammad Asif Naeem, Arslan Shabbir, Ghulam Murtaza
Summary: The study showed that soil sodicity has a greater impact on quinoa genotypes than salinity, with higher sodicity levels leading to more Na accumulation and oxidative damage. Genotypes A1 and A7 exhibited higher salt tolerance and better grain nutritional quality compared to Puno and Vikinga.
JOURNAL OF AGRONOMY AND CROP SCIENCE
(2021)
Article
Environmental Sciences
Ru Wang, Wen-yan Wang, Meng-yu Liu, Bibi Saima Zeb, Zhi-guo Zhao, Lan Wang
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2020)
Article
Engineering, Environmental
Da Kang, Yiyu Li, Dongdong Xu, Wenji Li, Wei Li, Aqiang Ding, Ru Wang, Ping Zheng
Article
Engineering, Environmental
Ru Wang, Meng-Yu Liu, Bing-Yin Liu, Ghulam Abbas, Miao Zhu, Lin-jiang Yuan
JOURNAL OF WATER PROCESS ENGINEERING
(2020)
Article
Environmental Sciences
Muhammad Kamran, Hifsa Ali, Muhammad Farhan Saeed, Hafiz Faiq Bakhat, Zeshan Hassan, Muhammad Tahir, Ghulam Abbas, Muhammad Asif Naeem, Muhammad Imtiaz Rashid, Ghulam Mustafa Shah
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2020)
Article
Environmental Sciences
Ru Wang, Li-ping Yu, Bibi Saima Zeb, Lin-jie Yuan, Meng-yu Liu, Lin-jiang Yuan
Summary: The wasted sludge from FeNiR process can be re-used as adsorbent with high efficiency in removing industrial pollutants. The adsorption process is mainly controlled by chemical adsorption, and the reactions proceed spontaneously.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Engineering, Environmental
Xiao'ai Huo, Linjiang Yuan, Qian Wang, Dacheng Luo, Ru Wang, Yaping Nan
Summary: A novel biological phosphorus removal process using starch as carbon source in anoxic-aerobic SBR was discovered, with nitrate playing a potentially beneficial role in promoting phosphorus uptake efficiency by enriching lactic acid-producing bacteria. Different bacterial community structures in the two systems also impacted phosphorus removal efficiency.
ENVIRONMENTAL ENGINEERING SCIENCE
(2021)
Review
Environmental Sciences
Zunaira Shabbir, Aneeza Sardar, Abrar Shabbir, Ghulam Abbas, Saliha Shamshad, Sana Khalid, Natasha, Ghulam Murtaza, Camille Dumat, Muhammad Shahid
Article
Astronomy & Astrophysics
A. Ditta, G. Abbas
Article
Engineering, Environmental
Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu
Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian
Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma
Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven
Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai
Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang
Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jinzhi Cai, Zhenshan Li
Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao
Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu
Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag
Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao
Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo
Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong
Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve
Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.
CHEMICAL ENGINEERING JOURNAL
(2024)