Article
Environmental Sciences
Yongxing Chen, Haochuan Chen, Zhenguo Chen, Haolin Hu, Cuilan Deng, Xiaojun Wang
Summary: A novel two-stage partial nitritation-anammox process was investigated to achieve high efficiency and save operational costs for high-concentration urea wastewater treatment. The results showed that intracellular hydrolysis and persistent free ammonia inhibition on nitrite-oxidizing bacteria were key mechanisms for efficient urea removal and stable nitrogen removal. The proposed process demonstrated promising potential for sustainable development in the urea industry.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Zhuocheng Shi, Jie Chen, Kejian Li, Yangyang Liu, Yun Tang, Liwu Zhang
Summary: Flue gas has significantly harmed the environment and human health. Current flue gas treatment methods are expensive and result in immense resource loss. To address this, we proposed a method to utilize flue gas rich in NOx, SO2, and CO2 to produce valuable fertilizer, urea. We found that HCOOH can be obtained through CO2 reduction using the hydrated electron generated by irradiated SO32- produced during flue gas SO2 removal. Urea can then be synthesized through the electrochemical coupling of HCOOH and NO using a Ag-Cu Janus nanoparticle electrocatalyst. This approach provides a feasible solution for the resource utilization of flue gas.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Crystallography
Gerard Serge Bruno Lebon, Jayesh B. Patel, Zhongyun Fan
Summary: High shear melt conditioning (HSMC) technology can refine grain size, reduce defects, and improve mechanical properties in the casting process of aluminum alloy billets without the use of polluting and expensive chemical grain refiners. The design of the rotor-stator affects the distributive mixing of particles, but has insignificant impact on their disintegration.
Article
Green & Sustainable Science & Technology
Jerzy Gagan, Kamil Smierciew, Michal Lukaszuk, Andrzej Pawluczuk, Dariusz Butrymowicz, Mateusz Kedzierski, Tadeusz Zielinski
Summary: This paper presents the motivations for developing innovative jet ejector scrubbers to reduce sulfur oxide emissions in marine engineering. Experimental investigations showed that the proposed jet ejector scrubber can effectively reduce SO2 emissions without additional filters, and can also reduce other chemical compounds in the exhaust gas. The results demonstrate the potential of this scrubber for marine applications.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Chemical
Kai Han, Shaohua Ju, Yu Zhou, Jingxi Zhang, Xiaoxi Wan, Na Li, Yongwan Gu
Summary: Compared with conventional reactors, the use of 3D-printing technology to manufacture multichannel large-volume microchannel reactors for wet NOX removal is simple, convenient, and cost-effective. The best removal efficiency of 100% was achieved by using a mixed solution of (NH2)(2)CO and H2O2, with flow rates of 100 mL/min each for gas and liquid, under specific experimental conditions. Increasing oxygen content and microchannel parameters further enhanced NOX removal efficiency, making microchannel reactors a promising method for improving air quality and reducing environmental pollution.
Article
Energy & Fuels
Hao Xiao, Hao Ma, Lei Wang, Zhibang Liu, Zhenjun Yang, Jinghui Dong, Lei Shao
Summary: This study investigated the intensification of HCl removal in a rotor-stator reactor, which showed better mass-transfer performance and potential economic advantages compared to conventional columns. The comparison experiments indicated that the rotor-stator reactor had a superior capability for HCl removal in flue gas, with higher KGa and lower height of a transfer unit compared to a rotating packed bed. An artificial neural network model was established to predict the KGa, demonstrating the rotor-stator reactor as an effective process intensification technology for HCl removal from flue gas.
Article
Engineering, Environmental
Wenhao Huang, Zhenshan Huang, Zhuoyao Chen, Zuotong Wu, Zaishan Wei
Summary: Flue gas cadmium is a persistent and toxic pollutant that can pose a threat to human health and the environment. A study investigated the use of a sulfate reducing membrane biofilm reactor (MBfR) for removing cadmium from flue gas. The reactor achieved a high removal efficiency of 95.1% and Desulfovibrio was found to be the dominant genus. The biofilm formation involved the conversion of cadmium into cadmium sulfide (CdS) and complexation with humic acids, resulting in bio-stabilization of the cadmium-containing flue gas.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Environmental Sciences
Ansley Hamid, Alan E. Wilson, H. Allen Torbert, Dengjun Wang
Summary: Phosphorus over-loading, linked to harmful algal blooms and wastewater treatment, has prompted immediate remediation attempts. However, conventional techniques are expensive and ineffective. This study demonstrates that flue gas desulfurization gypsum can efficiently remove phosphorus from water, suggesting its potential for large-scale practical applications.
Article
Engineering, Chemical
Mukhtar Nuhu Yahya, Huseyin Gokcekus, Derin Orhon, Bulent Keskinler, Ahmet Karagunduz, Philip Isaac Omwene
Summary: This study investigated the enzymatic hydrolysis of urea using urease enzyme in a membrane reactor, finding that higher ionic strength and concentrations of NH4SO2 and ammonium nitrogen inhibit urea hydrolysis over time. A sustainable alternative for converting urea to ammonia by utilizing urease in an EMR was demonstrated.
Article
Energy & Fuels
Zuotong Wu, Zhuoyao Chen, Wenhao Huang, Zaishan Wei
Summary: The sulfate-reducing membrane biofilm reactor (SRBR) was studied for removing arsenic trioxide (As2O3) from flue gas generated by sludge incineration. The reactor achieved a removal efficiency of 94.4%. Desulfovibrio, UC_Clostridiales, and Pseudodesulfovibrio were the dominant bacterial genera, with Desulfovibrio playing a key role in arsenite oxidation and sulfate reduction. The biofilm in the SRBR facilitated the stabilization of arsenic in the form of Fe-As-S and HA-As through biocomplexation, biosorption, and biodeposition.
Article
Energy & Fuels
Mariusz Tyranski, Jakub Michal Bujalski, Wojciech Orciuch, Lukasz Makowski
Summary: This manuscript focuses on the influence of catalyst bed parameters on the ammonia synthesis process and proposes modifications to the bed geometry. The results obtained through numerical methods can help improve the operation of existing devices and facilitate the design of new devices.
Review
Chemistry, Multidisciplinary
Yu Zhou, Jingxi Zhang, Ayonbala Baral, Shaohua Ju, Yongwan Gu
Summary: This study successfully enhances and maintains denitration efficiency using a printed three-dimensional large-flow microstructure reactor and urea solution, and outlines the optimal reaction conditions.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Agronomy
Xiuguo Zou, Siyu Wang, Yan Qian, Fei Gong, Shixiu Zhang, Jiangxue Hu, Wenchao Liu, Yuanyuan Song, Shikai Zhang, Jiawei Meng, Xinfa Qiu
Summary: This study improves the efficiency of broiler breeding through simulation of ammonia concentration distribution and structural modification.
Article
Engineering, Environmental
Lisheng Wang, Xiaofeng Kang, Yanchen Liu, Xia Huang
Summary: Stable partial nitrification was achieved in MABR using control strategies based on free ammonia (FA) and free nitrous acid (FNA), with low FA concentrations suppressing nitrite oxidizing bacteria (NOB) and FNA stabilizing partial nitrification by eliminating NOB.
Article
Green & Sustainable Science & Technology
Yongxing Chen, Haochuan Chen, Zhenguo Chen, Zijian Zhu, Xiaojun Wang
Summary: The proposed one-stage autotrophic nitrogen removal reactor (SABF) is an efficient and economical method for urea wastewater treatment, which can simultaneously achieve urea hydrolysis, partial nitritation, and anammox. It has low operational cost and high removal efficiency, and can enable the reuse of urea wastewater.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Biochemistry & Molecular Biology
A. Suely, H. Zabed, A. B. A. Ahmed, J. Mohamad, M. Nasiruddin, J. N. Sahu, P. Ganesan
FISH PHYSIOLOGY AND BIOCHEMISTRY
(2016)
Article
Chemistry, Multidisciplinary
N. M. Mubarak, J. N. Sahu, E. C. Abdullah, N. S. Jayakumar, P. Ganesan
RESEARCH ON CHEMICAL INTERMEDIATES
(2016)
Article
Thermodynamics
Manoj Tripathi, J. N. Sahu, P. Ganesan, J. Jewaratnam
APPLIED THERMAL ENGINEERING
(2016)
Article
Engineering, Environmental
H. Zabed, G. Faruq, J. N. Sahu, A. N. Boyce, P. Ganesan
CHEMICAL ENGINEERING JOURNAL
(2016)
Review
Green & Sustainable Science & Technology
H. Zabed, J. N. Sahu, A. N. Boyce, G. Faruq
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2016)
Review
Green & Sustainable Science & Technology
Manoj Tripathi, J. N. Sahu, P. Ganesan
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2016)
Article
Green & Sustainable Science & Technology
Lalatendu Pattanayak, Jaya Narayan Sahu, Pravakar Mohanty
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2017)
Article
Green & Sustainable Science & Technology
Hossain Zabed, Amru Nasrulhaq Boyce, J. N. Sahu, Golam Faruq
JOURNAL OF CLEANER PRODUCTION
(2017)
Article
Chemistry, Multidisciplinary
M. W. Yap, N. M. Mubarak, J. N. Sahu, E. C. Abdullah
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2017)
Article
Chemistry, Physical
Rama Rao Karri, N. S. Jayakumar, J. N. Sahu
JOURNAL OF MOLECULAR LIQUIDS
(2017)
Article
Chemistry, Multidisciplinary
N. M. Mubarak, A. Faghihzadeh, K. W. Tan, J. N. Sahu, E. C. Abdullah, N. S. Jayakumar
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
(2017)
Review
Engineering, Chemical
R. K. Thines, N. M. Mubarak, Sabzoi Nizamuddin, J. N. Sahu, E. C. Abdullah, P. Ganesan
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2017)
Review
Green & Sustainable Science & Technology
H. Zabed, J. N. Sahu, A. Suely, A. N. Boyce, G. Faruq
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2017)
Article
Construction & Building Technology
Shahriar Shams, J. N. Sahu, S. M. Shamimur Rahman, Amimul Ahsan
SUSTAINABLE CITIES AND SOCIETY
(2017)
Proceedings Paper
Engineering, Chemical
G. K. Gill, N. M. Mubarak, S. Nizamuddin, H. S. Al-Salim, J. N. Sahu
29TH SYMPOSIUM OF MALAYSIAN CHEMICAL ENGINEERS (SOMCHE) 2016
(2017)