Article
Environmental Sciences
Muniandy Gayathiri, Thiruchelvi Pulingam, K. T. Lee, Kumar Sudesh
Summary: The use of activated carbon is increasing in various industrial applications, and its production from biomass waste requires further research on key factors and mechanisms. Optimizing key parameters and understanding the characteristics and mechanisms of activated carbon are important for its effective production and application.
Article
Chemistry, Multidisciplinary
Azeem Sarwar, Majid Ali, Asif Hussain Khoja, Azra Nawar, Adeel Waqas, Rabia Liaquat, Salman Raza Naqvi, Muhammad Asjid
Summary: In this study, activated carbon based adsorbents were synthesized from hydro-char through modified hydrothermal carbonization and thermochemical activation methods, exhibiting high specific surface area and microporous volume with notable CO2 adsorption capacity. The experimental data fit various adsorption isotherm models, and the adsorption of CO2 was found to be spontaneous and exothermic on the adsorbent.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Chemistry, Physical
Elena David
Summary: Activated biochars were developed and evaluated for their adsorption performance in VOC capture. The adsorption capacities of activated biochars were significantly higher than non-activated biochars, with the biochars activated with H2SO4 showing the highest adsorption capacity. The activated biochar adsorbent could be used effectively in air purification filters to remove VOCs.
Article
Engineering, Environmental
Gozde Duman
Summary: High-performance activated carbons derived from textile wastes were successfully developed for the removal of oxytetracycline from aqueous solution. Different activation agents and textile waste types had significant effects on the properties of activated carbons and their efficacy in oxytetracycline removal, with ZnCl2 activation of Co and Co/PE activated carbons demonstrating the best adsorption performance.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Intan Syafiqah Ismail, Nor Adilla Rashidi, Suzana Yusup
Summary: Bamboo, as the fastest-growing plant abundant in Malaysia, is utilized as a starting material for activated carbon production and shows promising potential in CO2 capture. The bamboo-based activated carbons prepared through H3PO4 activation exhibit high BET surface area and CO2 adsorption capacity. Therefore, the H3PO4 activation method for converting bamboo waste into activated carbon is highly effective and promising.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Biotechnology & Applied Microbiology
Rodrigo Nunes Oss, Ricardo Franci Goncalves, Servio Tulio Cassini, Miguel Angelo Schettino Junior, Daniel Fernandes Cipriano, Jair Carlos Checon de Freitas
Summary: This study investigated the production of activated carbon using microalgae biomass from a wastewater treatment plant as a precursor. The results showed that the carbonization and physical activation process can be done in a single step using water vapor. The best condition for the production of activated carbon was carbonization at 800 degrees C and activation with water vapor in a ratio of 4 g water per gram of sample.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Chemistry, Analytical
Ran Bi, Siu-Kwong Pang, Kam-Chuen Yung, Li-Kun Yin
Summary: This study successfully prepared porous activated carbon electrodes from used cigarette filters, showing excellent capacitive performance and cycling stability, along with high energy density and commercial potential.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Environmental
Xiaochen Liu, Jun Lu, Minghao Fu, Hua Zheng, Quanyuan Chen
Summary: Powdered activated carbon (PAC) was used as a catalyst for hydrothermal carbonization (HTC) of cotton pulp black liquor (CPBL). The results showed that PAC-HTC could effectively decontaminate CPBL and had excellent reusability.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
K. R. Deepak, Sooraj Mohan, P. Dinesha, Rajasekhar Balasubramanian
Summary: For the first time, activated hydrochar was prepared from orange peel waste using KOH for potential environmental applications. The impact of hydrothermal carbonization temperature on the CO2 adsorption capacity of the activated hydrochar was investigated. The results showed that the activated hydrochar had high microporosity and various functional groups, making it suitable for effective adsorption. The highest CO2 uptake was observed for the hydrochar produced at a temperature of 220°C.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Agricultural Engineering
Mohd Rafein Zakaria, Mohammad Abdillah Ahmad Farid, Yoshito Andou, Irmawati Ramli, Mohd Ali Hassan
Summary: The palm oil industry has abundant biomass residues that can be used to produce valuable products. The carbon content of oil palm biomass is high, making it a promising source for carbonaceous materials. Pyrolysis is the most commonly used technique to convert the biomass into carbon-rich by-products, but there is a lack of precise definition and methods for carbon materials. This review compares biochar and activated carbon generated from oil palm biomass and emphasizes the importance of sustainable development and circular bioeconomy in the industry.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Energy & Fuels
Heri Rustamaji, Tirto Prakoso, Hary Devianto, Pramujo Widiatmoko, Wibawa Hendra Saputera
Summary: This study synthesized urea nitrogenated activated carbon (N-ACU) from oil palm empty fruit bunches and investigated its performance as a supercapacitor electrode. The results showed that the urea to hydrochar impregnation ratio affected the characteristics of N-ACU and the performance of supercapacitors. Urea nitrogenated treatment on activated carbon reduced resistance and maintained the stability of the supercapacitor. This study suggests that synthesizing nitrogenated activated carbon from biomass waste is a promising method for producing electrode materials.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Engineering, Environmental
K. K. Kishibayev, J. Serafin, R. R. Tokpayev, T. N. Khavaza, A. A. Atchabarova, D. A. Abduakhytova, Z. T. Ibraimov, J. Srenscek-Nazzal
Summary: Highly microporous inexpensive activated carbons were prepared using a physical activated method based on biomass and shungite minerals, and investigated for CO2 adsorption. Birch activated carbon showed the highest CO2 capture capacity and good selectivity for CO2-N2 separation, with easy regeneration after multiple cycles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Jaegwan Shin, Jinwoo Kwak, Yong-Gu Lee, Sangwon Kim, Minhee Choi, Sungjun Bae, Sang-Ho Lee, Yongeun Park, Kangmin Chon
Summary: This study investigated the competitive adsorption mechanisms of pharmaceuticals on pristine and NaOH-activated biochars from spent coffee wastes in lake water and wastewater effluent. The results showed that the NaOH-activated biochar had a higher adsorption capacity for pharmaceuticals due to its enhanced aromatic structure, facilitating pi-pi interactions. The thermodynamic calculations demonstrated that the competitive adsorption on NaOH-activated biochar occurred more spontaneously over a wide range of pH and ionic strength compared to pristine biochar.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Physical
Wenwen Tu, Yucheng Liu, Zhengfeng Xie, Mingyan Chen, Lili Ma, Guoyong Du, Meng Zhu
Summary: A novel activation-hydrochar with rich-pore structure was successfully prepared using a two-stage method, showing promising adsorption performance on Methylene Blue and Congo Red. The research highlighted the potential of utilizing waste materials for effective adsorption applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Qiuyun Pu, Jirui Zou, Junya Wang, Shijian Lu, Ping Ning, Liang Huang, Qiang Wang
Summary: In this study, biomass wastes were used to prepare activated carbons with high micropore percentage for CO2 capture. The AC derived from walnut shells showed superior CO2 uptake, and the micropore percentage was found to have a significant influence on the CO2 capture performance of AC.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
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)