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Byung-Moon Jun, Yejin Kim, Jonghun Han, Yeomin Yoon, Jeonggwan Kim and Chang Min Park
For this study, we applied activated biochar (AB) and its composition with magnetite (AB-Fe3O4) as adsorbents for the removal of polychlorophenols in model wastewater. We comprehensively characterized these adsorbents and performed adsorption tests under...
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Hicham Yazid, Taoufiq Bouzid, El mountassir El mouchtari, Lahoucine Bahsis, Mamoune El Himri, Salah Rafqah and Mohammadine El haddad
Walnut shells were used to produce highly microporous activated carbon. The prepared activated walnut shells were found to be an efficient adsorbent for removing Cr(VI). The study used the response surface methodology to investigate four independent vari...
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Tomasz Józwiak and Urszula Filipkowska
This study aimed to identify the possibility of using rapeseed husks (RH) as an unconventional sorbent for removing acidic (AR18, AY23) and basic (BR46, BV10) dyes from aqueous solutions. Its scope included, i.a.: sorbent characterization (FTIR, pHPZC), ...
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Chengmei Shang, Zhixi Geng, Yuanyuan Sun, Dongxue Che, Qingjiao Zhao, Ting Chen, Ming Tang and Lijuan Huo
With the development of industrial activities and the agricultural and mining industries, farmland soils are facing serious problems related to heavy metal contamination, especially cadmium (Cd) and arsenic (As) contamination. In this study, two industri...
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Xiancheng Gu, Linghua Dong, Tong Li and Weidong Yang
An active rotor with trailing-edge flaps (TEFs) is an effective active vibration control method for helicopters. Blade flapping dynamic characteristics have a significant effect on the active vibration control performance of an active rotor. In this stud...
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Juan Li, Zhenyang Tian, Gengshi Zhang and Wenbo Li
For the problem of hydroacoustic communication constraints in multi-AUV leader follower formation, this paper designs a formation control method combining CNN-LSTM prediction and backstepping sliding mode control. First, a feedback linearization method i...
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Hangli Zhang, Shujuan Wang, Ji Shu and Hongyu Wang
Doxycycline (DOX), a typical antibiotic, is harmful to aquatic ecosystems and human health. This study presents DOX removal by potassium ferrate (Fe(VI)) and montmorillonite and investigates the effect of Fe(VI) dosage, reaction time, initial pH value, m...
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Raid Alrowais, Noha Said, Muhammad Tariq Bashir, Ahmed Ghazy, Bandar Alwushayh and Mahmoud M. Abdel Daiem
The fabrication of carbon materials from biomass residues can be a promising economical approach for absorbing various target pollutants from aqueous phase. In the study, the adsorption of diphenolic acid (DPA) is investigated on activated carbons fabric...
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Zijian He, Chao Wang, Hongxia Cao, Jiaping Liang, Shuyao Pei and Zhijun Li
Biochar is a potential solution for addressing environmental problems related to excessive nitrogen (N). However, there is still some debate about the absorption and desorption of nitrate nitrogen (NO3--N). Therefore, this study investigated the NO3--N a...
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Wei Liu, Hui Ye and Xiaofei Yang
For an underactuated unmanned surface vehicle (USV), time-varying external disturbances affect the accuracy of trajectory tracking. To ensure trajectory tracking accuracy, in this paper the reduced-order extended state observer (ESO) and the super-twisti...
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