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Content Provider | World Health Organization (WHO)-Global Index Medicus |
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Author | Xu, Qiang Xu, Mingyu Yin, Ping Chen, Hou Qu, Rongjun Liu, Xiguang Zhang, Jiang |
Description | Author Affiliation: Yin P ( School of Chemistry and Materials Science, Ludong University, Yantai 264025, PR China. yinping426@163.com) |
Abstract | Novel biomass-based adsorbents organophosphonic acid functionalized spent buckwheat hulls (OPA-BH) with 60 mesh were successfully employed to adsorb Au(III) ions from simulated wastewater. The adsorption kinetics and isotherms both in unary ion system and in ternary ions system were investigated, and the applicability of the Langmuir, Freundlich and extended Langmuir isotherm models has been tested for the equilibrium. The process optimization was also conducted by using response surface methodology (RSM), and the maximum adsorption capacities reached 2.84 ± 0.01 mmol/g under the optimum process conditions. Furthermore, the regeneration capacities of OPA-BH were investigated by using the eluent solutions of 0.0-5.0% thiourea in 0.1 mmol/L HCl, and the results showed that the adsorption capabilities for OPA-BH were ranged between 0.77 mmol/g and 0.85 mmol/g after three cycles of adsorption-desorption processes. The research results showed that OPA-BH was favorable and useful for gold adsorption, and the high adsorption capacity and good reproducibility make it a good promising material for the precious metal uptake. |
ISSN | 09608524 |
Volume Number | 128 |
e-ISSN | 18732976 |
Journal | Bioresource Technology |
Language | English |
Publisher | Elsevier |
Publisher Date | 2013-01-01 |
Publisher Place | Great Britain (UK) |
Access Restriction | Subscribed |
Subject Keyword | Etidronic Acid Chemistry Fagopyrum Gold Isolation & Purification Seeds Waste Water Water Pollutants, Chemical Adsorption Biodegradation, Environmental Biomass Industrial Waste Prevention & Control Water Purification Journal Article Research Support, Non-u.s. Gov't Discipline Bioresource |
Content Type | Text |
Resource Type | Article |
Subject Domain (in MeSH) | Plant Structures Eukaryota Inorganic Chemicals Organic Chemicals Complex Mixtures Chemical Actions and Uses Physical Phenomena Biological Phenomena Environment and Public Health |
Subject | Bioengineering Renewable Energy, Sustainability and the Environment Waste Management and Disposal Environmental Engineering Medicine |
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