Article
Engineering, Environmental
Ruize Sun, Guangqian Luo, Mingyu Yu, Li Wang, Xinpei Lu, Xian Li, Hong Yao
Summary: Adsorbents injection technology is an effective strategy for controlling mercury emission from flue gas. This study proposed a novel method for synthesizing nano-sulfur adsorbent and demonstrated its higher efficiency compared to micron-sized elemental sulfur adsorbent. Furthermore, the research revealed the differences in sulfur allotropes' reactions with mercury.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
So Yeon Yoon, Seok Byum Jang, Kien Tiek Wong, Hyeseong Kim, Min Ji Kim, Choe Earn Choong, Jae-Kyu Yang, Yoon-Young Chang, Sang-Eun Oh, Yeomin Yoon, Min Jang
Summary: This study demonstrates that sulfur-anchored palm shell waste activated carbon powder (PSAC-S) has high Hg(II) adsorption capacity and stable adsorption behavior in water solutions. PSAC-S prepared using a one-pot wet impregnation method is suitable for a wide range of solution pH values.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Energy & Fuels
Weixiong Lin, Haiqi Gu, Jiali Zhou, Ziwei Ye, Fan Yang, Hua Li, Shuiyu Sun
Summary: A novel CaO-AS bio-adsorbent was prepared for Cd(II) adsorption, with optimal conditions and mechanisms identified through experiments and analysis. The study provides theoretical and data support for industrial application of CaO-AS bio-adsorbent, reducing preparation costs of biomass-based adsorbents and enhancing their future potential.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Chemistry, Physical
Yong Fu, Chengyue Yang, Yutong Zheng, Jinwen Jiang, Yu Sun, Feng Chen, Jianshe Hu
Summary: The study utilized sulfur to prepare a polysulfide complex material for capturing Hg(II) and converting the Hg(II)-containing spent adsorbent into a catalyst. Characterization results demonstrated that the composite material exhibited good adsorption and regeneration performance, as well as excellent selectivity and catalytic activity.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Chemical
Meng Du, Yueyan Zhang, Zeyi Wang, Mengran Lv, Qian Xu, Zhiqiang Chen, Qinxue Wen, Ang Li
Summary: Phosphorus removal and recovery are important for water pollution control. In this study, La-doped activated carbon adsorbents were prepared, which exhibited high phosphorus adsorption capacities and enhanced mass transfer rate. The adsorbents maintained excellent performance at low phosphorus concentrations and can be applied in actual wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jiwon Chung, Neha Sharma, Minyoung Kim, Kyusik Yun
Summary: The study investigated the adsorption of methylene blue from wastewaters using activated carbon derived from sucrose and melamine. The synthesized adsorbent showed high specific surface area and fast adsorption rate, making it effective in removing methylene blue from wastewater.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Mohammad Reza Khosravi-Nikou, Mohammad Hadi Safari, Amir Asadi Rad, Pouya Hassani, Mohammad Mohammadian, Maryam Ahmadi, Negin Ghafari, Maryam Naseri
Summary: In this study, a modified mesoporous adsorbent impregnated with aluminum was used to remove aromatic sulfur compounds from a model fuel. Through various analytical methods, it was found that the Temkin model and pseudo-second-order model were most suitable for describing the adsorption equilibrium and kinetics, respectively.
SCIENTIFIC REPORTS
(2021)
Review
Energy & Fuels
Chinenye Adaobi Igwegbe, Joshua O. Ighalo, Soumya Ghosh, Shahin Ahmadi, Victor Ugonabo
Summary: Adsorbent materials developed from pistachio waste have shown high removal efficiencies for various pollutants, with Iran being a major source country. Studies have found that the adsorption behavior of pistachio adsorbents often align well with the Langmuir and Freundlich models, as well as the pseudo-second-order kinetics model.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Engineering, Environmental
Yao Huang, Yingmei Huang, Liping Fang, Bin Zhao, Yufan Zhang, Yiwen Zhu, Zongwu Wang, Qian Wang, Fangbai Li
Summary: This study reveals the key molecular mechanisms of thiol-modified biochar in mercury removal and confirms its potential for remediation of mercury-contaminated surface and groundwater.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Ruize Sun, Biao Fu, Guangqian Luo, Xian Li, Hong Tian, Hong Yao
Summary: Halogenated activated carbon adsorbents demonstrate superior mercury capture performance in flue gas. This study investigated the bonding nature of spent halogenated activated carbon adsorbents at the atomic level, revealing that mercury attaches to the carbonaceous surface with a weak interaction in certain cases, providing insights for fabricating more environmentally friendly mercury removal adsorbents in the future.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Green & Sustainable Science & Technology
Isabelle Jones, Mingming Zhu, Juan Zhang, Zhezi Zhang, Jorge Preciado-Hernandez, Jian Gao, Dongke Zhang
Summary: Spent tyre activated carbon (STAC) shows excellent performance in dye adsorption, heavy metal removal and flue gas cleaning, outperforming commercial activated carbon (CAC) in certain applications despite lower surface areas. STAC's enhanced performance is attributed to high mesoporosity, low surface pH, and acidic surface functional groups. Steam activated STAC has comparable results to CAC in terms of surface area and pore volume, making them cleaner and sustainable alternatives to conventional products.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Haiqi Gu, Weixiong Lin, Shuiyu Sun, Chun Wu, Fan Yang, Ye Ziwei, Nanwei Chen, Jie Ren, Shilin Zheng
Summary: In this study, a low-cost and environmentally friendly sludge-based adsorbent modified by calcium oxide (CaO) was prepared. The CaO modification was found to enhance the adsorption capacity and mechanical strength of the adsorbent. Optimal conditions for Cd(II) adsorption were identified as 5% CaO dosage and 60 degrees C drying temperature, with a Cd(II) adsorption rate of 99.74% achieved under these conditions.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
Ye Qiu, Zhanhua Zhang, Tong Zhang, Ping Zhang
Summary: This study investigates the sorptive behaviors of Hg(II) by sulfur-aged microplastics in anaerobic environments. The results show that the sulfur aging process greatly enhances the MP's sorption capacity of Hg(II). Thiol groups play a dominant role in enhancing the adsorption capacity of microplastics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Mohamad Razif Mohd Ramli, Noor Fazliani Shoparwe, Mohd Azmier Ahmad
Summary: In this study, a dynamic model was used to simulate and validate the adsorption of methylene blue (MB) dye by jengkol peel-based activated carbon (JPAC) in aqueous solution. The results showed that JPAC synthesized under microwave activation conditions of 400 Watt and 4 minutes achieved favorable properties for MB dye removal, with a high BET surface area and pore volume. The adsorption capacity of MB on JPAC increased as the initial concentration of MB dye increased. The calculated R-2 values indicated a good fit between the model and experimental data, and the mass transfer coefficient decreased with an increase in MB dye initial concentration.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Kahina Annane, Wahiba Lemlikchi, Sophie Tingry
Summary: This study investigates the adsorption of cadmium ions from aqueous solution using eggshell waste. The results show that the physico-chemical properties of eggshell and experimental parameters significantly affect the adsorption performance of cadmium ions.
BIOMASS CONVERSION AND BIOREFINERY
(2023)