Article
Environmental Sciences
Xiaoxue He, Xuexue Chen, Xinran Wang, Li Jiang
Summary: Waste management and valorization is a global issue. Low-cost and renewable adsorbent activated carbon (AC) from agriculture residues is a focus. Microwave heating is an efficient technology for production of AC. CCAC was synthesized from corn cob via microwave vacuum pyrolysis under ambient vacuum, and the optimization process for maximized yield and iodine number was developed using response surface methodology (RSM).
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Wen-Hui Kuan, Yi-Show Hu, Chen-Yi Chiu, Kuo-Yung Hung, Shan-Shan Chou
Summary: The study focused on the influences of reactive and dielectric characteristics of activators in the microwave-catalyzed conversion of phenolic resin waste to activated carbon. It was found that H3PO4-activated wastes exhibited more pronounced functionalized properties, leading to the production of a more effective adsorbent.
Article
Environmental Sciences
Wenya Ao, Junshen Qu, Hejie Yu, Yang Liu, Chenglong Liu, Jie Fu, Jianjun Dai, Xiaotao Bi, Yanxin Yuan, Yajie Jin
Summary: A furfural residue-derived activated carbon supported black-TiO2 photocatalyst was successfully prepared and characterized. The addition of activated carbon into black TiO2 reduced the recombination of photogenerated electrons, thus enhancing the degradation efficiency of tetracycline hydrochloride.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
Wei Hu, Yaolan Niu, Kun Dong, Dunqiu Wang
Summary: This study developed a highly efficient and low-cost activated carbon (BAC-600) derived from bagasse, which was used for the removal of sulfamethoxazole (SMZ) from water. The adsorption conditions were optimized using response surface methodology (RSM) with a Box-Behnken design (BBD). BAC-600 exhibited excellent adsorption performance, fitting well with the pseudo-second-order model. The adsorption mechanism of SMZ on BAC-600 involved hydrogen bonding, electrostatic interaction, and p-p interaction. This research provides a potential solution for eliminating environmental pollution caused by antibiotics in water.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Y. C. Xie, K. Kang, C. Zheng, L. Lan, H. Song, H. L. Li, J. Kang, S. P. Bai
Summary: This paper optimized the synthesis parameters of SFEACs using response surface methodology, and obtained a high loading rate of activated carbon composites under the optimized conditions. The carbon loss rate was only 2.28% under these conditions, with a tensile strength of 0.31 MPa and shear strength up to 0.035 MPa.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Energy & Fuels
Zhuo-ran Zhang, Shao-hua Luo, Jia-chen Wang, Meng-yao Sun, Sheng-xue Yan, Qing Wang, Ya-hui Zhang, Xin Liu, Xue-fei Lei
Summary: In this study, coal-based activated carbon (CBAC) was prepared from lignite and its synthesis process was optimized using response surface methodology. The optimal conditions resulted in a product with high specific surface area and large pore volume, and the CBAC-based supercapacitor exhibited high specific capacitance and excellent capacity retention at high current density.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Environmental Sciences
Wei Wang, Shaoqing Li, Pengyuan Yin, Jiaxiong Li, Yi Tang, Min Yang
Summary: In this study, N, S-codoped fluorescent carbon dots were rapidly fabricated and used for the detection of tetracyclines. The synthesis parameters were optimized using response surface methodology, and the as-synthesized NSCDs exhibited superior photoluminescence stability and high quantum yield. The fluorescence intensity of the NSCDs could be effectively quenched by tetracyclines through the inner filter effect and photoinduced electron transfer.
Article
Energy & Fuels
Moina Athar, Sameer Imdad, Sadaf Zaidi, Mohammad Yusuf, Hesam Kamyab, Jirf Jaromfr Klemes, Shreeshivadasan Chelliapan
Summary: In this study, biodiesel was produced using microwave heating and an acidic catalyst. The optimum design conditions for the transesterification reaction were determined using response surface methodology and confirmed through experiments. The study found that microwave heating can efficiently yield high biodiesel from low-cost, high-FFA feedstock.
Article
Engineering, Environmental
Changjin Guo, Lei Ding, Xiaopeng Jin, Huiwen Zhang, Dewei Zhang
Summary: This study optimized the removal of hexavalent chromium from aqueous solution using a new cassava sludge-based activated carbon through response surface methodology, revealing reliable results and high efficiency. The CSAC showed remarkable adsorption capacity for Cr(VI) and maintained a high removal efficiency even after multiple regeneration cycles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Thermodynamics
Shin Ying Foong, Rock Keey Liew, Peter Nai Yuh Yek, Chai Sean Han, Xue Yee Phang, Xiangmeng Chen, William Woei Fong Chong, Meenakshi Verma, Su Shiung Lam
Summary: Water shortage is a global issue due to a lack of clean potable water supply and inland freshwater resources. Traditional desalination methods are energy intensive and produce brine that harms soil and vegetation. This study explores the potential of microwave irradiation combined with activated carbon to enhance freshwater recovery from seawater. The addition of activated carbon significantly improves the heating rate and reduces energy consumption, resulting in the production of high-quality freshwater suitable for agriculture and industry. The microwave approach shows promise in resolving the water scarcity problem without environmental pollution.
Article
Biochemistry & Molecular Biology
Emmanuel Kweinor Tetteh, Elorm Obotey Ezugbe, Dennis Asante-Sackey, Edward Kwaku Armah, Sudesh Rathilal
Summary: This study focused on optimizing the photocatalytic degradation of Basic Blue 41 dye in an aqueous medium using an activated carbon (AC)-TiO2 photocatalyst. The results showed that the catalyst load was the most significant factor impacting the process, while the interactive effect of reaction time and pH had a positive influence. At optimal conditions, a desirability of 96% was achieved, representing significant removal of turbidity and color from the water.
Article
Engineering, Chemical
Zenan Wang, Xin Zheng, Yan Wang, Heng Lin, Hui Zhang
Summary: This study investigated the adsorptive removal of phenanthrene from synthetic soil washing effluent using activated carbon prepared from waste walnut shells. The effects of activated carbon dosage, Tween 80 concentration, and adsorption time on phenanthrene removal were studied using Box-Behnken statistical experiment design and response surface methodology. The results showed that the activated carbon dosage and adsorption time had a positive effect on phenanthrene removal, while the Tween 80 concentration had a negative effect.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Getasew Yirdaw, Awrajaw Dessie, Tsegaye Adane Birhan
Summary: Low-cost porous carbon material was prepared from agricultural byproduct Noug stalk through chemical activation, which showed great potential for wastewater treatment through adsorption process.
Article
Chemistry, Multidisciplinary
Danyun Lei, Xiang-Dan Li, Min-Jung Ma, Da-Young Kim, Jae-Hyun Noh, Byoung-Suhk Kim
Summary: In this study, core-sheath nanostructured carbon nanofibers (CNFs) derived from a phenolic resin (PR)/polyacrylonitrile (PAN) blend were fabricated via one-pot solution electrospinning and further treated by mixed salt activation process to develop activated porous CNFs (CNF-A). The activated PR/PAN blend with PR 20% (CNF28-A)-derived core-sheath nanostructured CNFs showed enhanced specific capacitance and long-term cycle stability in a supercapacitor device. The fabricated supercapacitor device exhibited a high energy density at a given power density.
Article
Green & Sustainable Science & Technology
Mohamed Romdhani, Afef Attia, Catherine Charcosset, Samia Mahouche-Chergui, Ayten Ates, Joelle Duplay, Raja Ben Amar
Summary: In this study, activated carbon produced from sawdust was used to remove PCT and CPL compounds from an aqueous solution. The removal efficiencies for PCT and CPL with the low-cost activated carbon were found to be 85% and 98% respectively, at the optimum dosage. The results suggest that activated carbon made from sawdust can be an effective alternative adsorbent for removing PCT and CPL in water environments.