Jing Qian , Qingsong Cai , Tao Zheng , Jizi Wu , Fuwei Sun , Rui He , Muhammad Aqeel Kamran , Jing Zhan , Xianhuai Huang
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引用次数: 0
Abstract
In this study, a composite-modified sludge-based biochar (Mn-P-SBC) was synthesized from municipal sludge using phosphoric acid and manganese oxides, and its effectiveness for adsorbing co-pollutants Congo red (CR) and cadmium (Cd) from wastewater was evaluated. Characterization confirmed successful integration of phosphoric acid and manganese oxide modifications, with notable improvements in pore structure and surface functional groups, facilitating Cd(II) and CR adsorption. Experimental results demonstrated that Mn-P-SBC had substantial adsorption capacity across a pH range of 3–12, achieving maximum capacities of 128.4 mg g−1 for CR and 26.3 mg g−1 for Cd(II), as determined by isothermal adsorption models. In a co-adsorption system, competitive effects were observed at low pollutant concentrations; however, at higher CR or Cd(II) concentrations, the material's adsorption capacity for the other pollutant increased, indicating a synergistic effect. This enhanced adsorption is likely due to electrostatic interactions, A-type ternary surface complex formation, and surface precipitation. This study presents an innovative approach for the simultaneous treatment of CR and Cd(II) in contaminated water.
本研究以城市污泥为原料，以磷酸和锰氧化物为原料合成了复合改性污泥基生物炭（Mn-P-SBC），并对其吸附废水中共污染物刚果红（CR）和镉（Cd）的效果进行了评价。表征证实磷酸和氧化锰修饰成功整合，孔隙结构和表面官能团显著改善，促进了Cd（II）和CR的吸附。实验结果表明，Mn-P-SBC在3-12的pH范围内均具有可观的吸附能力，等温吸附模型测定的CR和Cd（II）的最大吸附容量分别为128.4 mg g - 1和26.3 mg g - 1。在共吸附系统中，在低污染物浓度下观察到竞争效应；然而，当CR或Cd（II）浓度较高时，材料对其他污染物的吸附能力增加，表明存在协同效应。这种增强的吸附可能是由于静电相互作用、a型三元表面络合物的形成和表面沉淀。本研究提出了一种同时处理污染水中CR和Cd（II）的创新方法。
期刊介绍：
The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies
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