Article
Engineering, Chemical
Yahya Sahari, Mohd Shamsul Anuar, Mohd Zuhair Mohd Nor, Nur Hamizah Abdul Ghani
Summary: A novel hybrid dryer was used to dry desiccated coconut in both single and hybrid mode. The effects of different drying modes and methods on drying time, specific energy consumption, moisture diffusivity, color change, whiteness index, oil content, free fatty acid, peroxide value and microstructure of desiccated coconut were investigated and analyzed. The results showed that increasing drying temperature reduced drying time and increased moisture diffusivity, while hybrid mode IR-IRCD had the best color retention and lowest energy consumption.
JOURNAL OF FOOD ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Jun Tao, Xuexiang Fu, Chengchun Du, Dengfeng Zhang
Summary: This study introduced a method for preparing activated carbon from tea residue, and investigated the physicochemical properties and adsorption performance of the obtained activated carbon. The optimal activation conditions for the activated carbon samples were found to be 900 degrees C activation temperature, 60 minutes activation time, and a char to KOH mixture ratio of 3:2. Adsorption experiments showed that the activated carbon had a high adsorption capacity for o-cresol and followed a pseudo-second-order adsorption kinetics model. Additionally, the adsorption process was found to be spontaneous and endothermic, with physisorption and chemisorption interactions playing a role.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Muhammad Fakhri Zainuddin, Chong Kar Fai, Mohd Shamzi Mohamed, NorAini Abdul Rahman, Murni Halim
Summary: The replacement of petro-diesel with biodiesel has raised concerns about feedstocks and cost. This study explores the production of single cell oil (SCO) from lignocellulosic biomass hydrolysates using Yarrowia lipolytica JCM 2320. Inhibitors formed during acid pretreatment of biomass can have detrimental effects on the fermentation process, so detoxification methods were examined. The results show that using adsorption resins can effectively remove inhibitors and increase SCO yield.
Article
Chemistry, Multidisciplinary
C. Madhusha, T. Jayasundara, I. Munaweera, C. Perera, G. Wijesinghe, M. Weerasekera, C. Sandaruwan, A. Meiyazhagan, F. C. Robles Hernandez, P. M. Ajayan, N. Kottegoda
Summary: Modifying and functionalizing activated carbon using metal nanoparticles have gained significant attention as a means to enhance its properties. This study successfully synthesized copper-doped activated carbon from coconut coir (Cu-ACC) and confirmed the incorporation of copper nanoparticles into the carbon matrix. The Cu-ACC nanohybrid material exhibited excellent fluoride and hardness removal capabilities and demonstrated enhanced antimicrobial activity against water pathogens.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Engineering, Chemical
Meltem Sirazi, Sibel Aslan
Summary: Using olive pomace as a precursor for activated carbon production by chemical activation with KOH showed that the specific surface area and micropore volume of the resulting activated carbons can be significantly increased by adjusting the activation temperature and impregnation ratio.
CHEMICAL ENGINEERING COMMUNICATIONS
(2021)
Article
Physics, Condensed Matter
Belal Abu Tarboush, Farouq S. Mjalli, Mohammed Abdulhakim Alsaadi, Mustafa Mohammed Aljumaily
Summary: In this study, powder activated carbon treated with KOH was used to synthesize multiwall carbon nanotubes using CVD. The concentration of KOH was found to affect the quantity and size of CNT, as well as the uniformity of distribution. A proposed mechanism suggests that high temperatures in the CVD reaction lead to the formation and aggregation of K atoms, acting as seeds for carbon nanotube assembly.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Green & Sustainable Science & Technology
Daisuke Higai, Zhebin Huang, Eika W. Qian
Summary: Activated carbon was produced from coconut shell through a process of chemical activation with phosphoric acid. The study investigated the effects of various preparation parameters on porous texture and surface characteristics, as well as the adsorption capacities of activated carbon for chromium, lithium, and cesium. Surface modification using nitric acid was found to enhance adsorption capacities, with oxygen-containing functional groups playing a key role in the adsorption of metal ions, particularly cesium ions.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2021)
Article
Engineering, Chemical
Ndifreke Etuk Williams, Nur Pasaoglulari Aydinlik
Summary: The study showed that increasing the potassium hydroxide (KOH) ratio can improve the removal efficiency and surface area of activated carbon, with different ratios having significant differences in the adsorption of methylene blue (MB).
CHEMICAL ENGINEERING COMMUNICATIONS
(2021)
Article
Engineering, Chemical
Sarmad A. Rashid, Tariq M. Naife, Badoor M. Kurji
Summary: In this study, the potential of using prepared activated carbon (AC) from sunflower seed hulls (SSH) for adsorption of amoxicillin antibiotic (AMOX) from aqueous solutions was investigated. The prepared AC exhibited a high removal percentage of AMOX and was characterized by various analysis techniques. Langmuir isotherm model fitted well with the experimental data, indicating the maximum AMOX adsorption capacity of the prepared AC. The pseudo-first-order equation provided a better fit for the kinetic data obtained. The proposed adsorption mechanism suggests the involvement of p-p interactions. Overall, the prepared SSHAC showed promising potential as an efficient adsorbent for AMOX removal from aqueous solutions.
DESALINATION AND WATER TREATMENT
(2022)
Article
Materials Science, Multidisciplinary
Pingqiang Gao, Yan Zhang, Jinze Du, Hong Sui, Lin He
Summary: Porous carbons (PCs) were prepared using the heavy fraction of phenolic distillation residue as raw materials, and synthesized through a carbonize-activated one-step method with different templates. PCs prepared with Al2O3 and MgO templates demonstrated higher specific surface area and abundant pores, showing promising potential for the adsorption of VOCs and wastewater treatment.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Engineering, Chemical
Alaa K. Mohammed, Hadeel Faroak Hameed, Israa M. Rashid
Summary: This study focuses on improving the physicochemical properties of water samples from the Tigris River using biologically produced activated carbon. An eco-friendly and low-cost activated carbon was prepared from the Alhagi plant, and the optimal conditions for preparation were determined.
DESALINATION AND WATER TREATMENT
(2023)
Article
Water Resources
Davidson Egirani, Mohd T. Latif, Napoleon Wessey, Nanfe . R. Poyi, Nabila Shehata
Summary: Two forms of activated carbon, granular and powdered, were tested for mercury removal in solution using African palmae shell as precursor. The results showed that powdered activated carbon demonstrated the highest adsorption efficiency with 93%, while granular activated carbon showed 92% efficiency in terms of contact time.
APPLIED WATER SCIENCE
(2021)
Review
Polymer Science
Yoon-Ji Yim, Byung-Joo Kim
Summary: Activated carbon (AC) and activated carbon fibers (ACFs) are materials with a large specific surface area and excellent physical adsorption properties, which can be used as electrode materials to improve the performance of adsorbents or capacitors. Recent studies have confirmed the applicability of AC/polymer composites in various fields by exploiting the unique physical and chemical properties of AC. These composites have demonstrated excellent mechanical properties, stability, antistatic and electromagnetic interference (EMI) shielding functions, making activated carbon an ideal reinforcing material for low-cost polymer composites.
Article
Chemistry, Analytical
Junfeng Feng, Huimin Zhu, Yangyang Xu, Jianchun Jiang, Hui Pan
Summary: The study focused on producing high-performance activated carbon using crude commercial Indulin C kraft lignin isolated from pulping black liquor, resulting in high yield, low-cost activated carbon with superior adsorption capacity compared to other commercial lignins. This approach shows promising potential in terms of technical, economic, and environmental feasibility for increasing profit and reducing carbon emissions.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Materials Science, Paper & Wood
Qingsong Ji, Haichao Li, Jingjing Zhang
Summary: This study aimed to prepare activated carbons containing nitrogenous functional groups from nitrogen-containing raw materials using a chemical method. Fish scales were used as the raw material, resulting in the successful production of nitrogen-functional groups with acid-base amphoteric adsorbent properties.
