Article
Multidisciplinary Sciences
Hailin Long, Kaihua Chen, Caixia Xu, Haoyu Li, Huimin Xie, Shaohua Yin, Yongmi Wang, Libo Zhang, Shiwei Li, Aiyuan Ma
Summary: In this study, the evolution of Ag and Cu in sintering dust was successfully extracted using chlorination roasting process, achieving high recovery rates. Thermodynamic analysis revealed that MgO and SiO2 promote the chlorination process, CuO can be chlorinated by Cl-2, and Ag is more easily chlorinated than CuO.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Environmental
Diana R. Lima, Eder C. Lima, Pascal S. Thue, Silvio L. P. Dias, Fernando M. Machado, Moaaz K. Seliem, Farooq Sher, Glaydson S. dos Reis, Mohammad Reza Saeb, Jorg Rinklebe
Summary: The study prepared four different magnetic biochars using a combination of Sappeli sawdust with NiCl2 or NiCl2 plus ZnCl2 solutions and a leaching process assisted by ultrasound. The biochars showed good magnetization saturation and lower leaching time compared to conventional methods. The addition of zinc chloride increased the surface areas of the biochars, influencing their sorption capacities for various sorbing species.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Anja Rietig, Thomas Langner, Joerg Acker
Summary: A characteristic of wet chemical etching of silicon in concentrated HF-HNO3 and HF-HNO3-H2SiF6 mixtures is the release of high reaction heat, leading to a significant temperature increase and changes in reaction process and etching rate. Various factors including transport phenomena and surface properties of Si contribute to the uncertainty of etching rate determination. This study proposes a new method using turnover-time curves calculated from temperature increase during dissolution process to accurately determine etching rates.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Engineering, Chemical
Thomas Neron, Laurent Cassayre, Xuan Zhuo, Marie-Helene Manero, Florent Bourgeois, Anne-Marie Billet, Carine Julcour
Summary: This paper introduces a study on the improvement of production processes for basic materials. By using alternative resources and innovative technological solutions, the aim is to reduce environmental costs. Specifically, the study focuses on the dissolution of anorthosite in concentrated hydrochloric acid and proposes a modelling strategy for predicting and evaluating the process.
MINERALS ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Honghu Tang, Lihua Zhao, Yue Yang, Haisheng Han, Li Wang, Wei Sun
Summary: This study designed an in-situ monitoring system to detect chloride ion water leaching behaviors and investigated various parameters influencing the kinetic behaviors. The results showed that at low solid/liquid ratio, the dissolution process was diffusion-controlled, while it shifted to surface chemical reaction-controlled as the ratio increased. Increasing temperature and stirring speed improved the chlorine removal speed.
Article
Food Science & Technology
Bifen Zhu, Chunli Fan, Chunsheng Cheng, Tianqin Lan, Lin Li, Yuyue Qin
Summary: The study examined the migration of nano-Ag from polylactic acid films treated with high-pressure food processing. The results showed that high-pressure processing resulted in a denser structure and higher crystallinity in the films, affecting the migration of AgNPs. The research indicated that high-pressure food processing could effectively suppress AgNPs migration from PLA-based film when in contact with acidic food simulant.
JOURNAL OF FOOD SCIENCE
(2021)
Article
Pharmacology & Pharmacy
Mangesh S. Bordawekar, Madhu Pudipeddi, Colleen E. Ruegger, Sundeep S. Dhareshwar
Summary: This technical note investigated the reduction of dissolution rate in a dry blend capsule formulation containing an amorphous salt of drug NVS-1 during accelerated stability studies. It was observed that at elevated temperature and humidity conditions, sintering of the amorphous drug particles occurred, resulting in slower dissolution rate. Formulation intervention improved dissolution performance, but sintering was still observed at high humidity. Future formulation efforts will focus on reducing the impact of moisture and optimizing disintegrant levels.
Article
Biotechnology & Applied Microbiology
Gabriela Gisela Lopez, Maria Marcela Brousse, Andres Ramon Linares
Summary: This study compared ultrasound-assisted extraction (UAE) and conventional extraction by agitation (AE) for total phenolic compounds (TPC) extraction from yerba mate leaves. Water and 50% aqueous ethanol solution were used as solvents, and the effects of solvent-to-solid ratio, particle size, stirring speed (AE), and ultrasound power amplitude (UAE) were examined. The experimental data were fitted well by the swelling/diffusion model, which considers two mechanisms coupled at different rates. The results provide valuable information for the industrial production of TPC from yerba mate leaves.
FOOD AND BIOPRODUCTS PROCESSING
(2023)
Article
Energy & Fuels
J. Narendranath, J. Manokaran, S. Shanmuga Sundar, R. Muruganantham, Ahmed Al Shoaibi, C. Srinivasakannan, N. Balasubramanian
Summary: Despite large investments in industries, energy conservation methods are lagging behind and industries are still searching for alternatives. This study presents an effective method of recovering sulfur and hydrogen from hydrogen sulfide using indirect electrolysis, with graphite as both anode and cathode and calomel as a reference electrode. The recovered sulfur showed a crystalline orthorhombic structure, and the maximum current density achieved was 0.41 A/cm(2). The quantity of sulfur recovered by indirect electrolysis was 2.9 mg with an efficiency of 90.44%.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Materials Science, Multidisciplinary
Junping Meng, Jingxuan Peng, C. Srinivasakannan, Xinhui Duan, Jinsheng Liang
MATERIALS RESEARCH EXPRESS
(2020)
Article
Metallurgy & Metallurgical Engineering
Guo Lin, Hongtao Qu, Tingfang Xie, Likun Gu, Jian Liu, Shixing Wang, Wei Wang, Libo Zhang, Tian Wang, Haokai Di, Jun Chang, C. Srinivasakannan
Article
Chemistry, Analytical
Peng Lv, Liangjing Zhang, C. Srinivasakannan, Shiwei Li, Yuan He, Kaihua Chen, Shaohua Yin
MICROCHEMICAL JOURNAL
(2020)
Article
Chemistry, Multidisciplinary
Zhiwei Sun, Yanhua Liu, Chandrasekar Srinivasakannan
Article
Engineering, Environmental
Omar Khalifa, Fawzi Banat, C. Srinivasakannan, Jelena Radjenovic, Shadi W. Hasan
JOURNAL OF WATER PROCESS ENGINEERING
(2020)
Article
Engineering, Chemical
Guo Lin, Chen Wang, Xiteng Li, Yunhao Xi, Wei Wang, Libo Zhang, Jun Chang
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2020)
Article
Chemistry, Multidisciplinary
Hailin Long, Haoyu Li, Jiannan Pei, C. Srinivasakannan, Shaohua Yin, Libo Zhang, Aiyuan Ma, Shiwei Li
Summary: In this study, a process for the clean recovery of multiple valuable metals from cyanide tailings was proposed using chlorination roasting, achieving high recovery rates. Experiments identified optimal conditions, such as chlorinated agent dosage and roasting temperature, for maximum recovery of valuable metals.
SEPARATION SCIENCE AND TECHNOLOGY
(2021)
Article
Electrochemistry
Lei Guo, Mengyue Zhu, Jun Chan, Renjith Thomas, Renhui Zhang, Pengjie Wang, Xingwen Zheng, Yuanhua Lin, Riadh Marzouki
Summary: An imidazoline based ionic liquid MTOI was synthesized using a simple synthesis route, and its corrosion inhibition behavior on N80 steel in 15% HCl solution was explored. The results showed that MTOI exhibited high inhibition efficiency as a mixed-type inhibitor.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2021)
Article
Engineering, Chemical
Asma Moradi, Zahra Ranjbar, Lei Guo, Sirous Javadpour, Jun Chang
Summary: This study evaluated the synergistic action of Achillea Millefolium Extract with zinc ion for carbon steel corrosion, showing a high inhibition efficiency. The effectiveness of the mixed inhibitor was validated through electrochemical testing and surface analysis, providing insights into the inhibition mechanism at the atomic level.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Crystallography
Zhanyong Guo, Fachuang Li, Qian Zhang, Guang Su, Jun Chang, Huilin Zhou
Summary: A new method of oxygen-enriched microwave roasting has been proposed to improve the dechlorination process of CuCl waste residue. The results show that microwaves can promote the dechlorination reaction by significantly improving the dechlorination efficiency and reducing the activation energy.
Article
Nanoscience & Nanotechnology
Biao Zeng, Wei Wang, Sijin He, Guo Lin, Wenjia Du, Jun Chang, Zhao Ding
Summary: By synthesizing a novel adsorbent Zn-AHMT, a method with strong adsorption capacity for wastewater containing Hg ions was successfully discovered, demonstrating promising application prospects for this adsorbent.
NANO MATERIALS SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Guang Su, Zhanyong Guo, Ping Guo, Fachuang Li, Qian Zhang, Huilin Zhou, Jun Chang
Summary: Microwave roasting pretreatment can improve the nickel leaching rate from the residue and reduce the weight of the material. The effect of roasting temperature on the nickel leaching rate was found to be more significant than those of roasting time and microwave power.
GREEN PROCESSING AND SYNTHESIS
(2021)
Article
Electrochemistry
Zinan Xie, Jun Chang, Changyuan Tao, Li Li, Jinhua Luan, Zuohua Liu
Summary: This study utilized an original PAN-based carbon fiber as an anode material, showing excellent electrocatalytic activity in manganese electrolysis with reduced energy consumption and pollution emissions. The growth of manganese dendrites on the cathode edge was effectively controlled, contributing to improved electrolytic efficiency.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)