Abstract Waste newspapers as absorbents to remove contaminant are limit to the extracting fibers from the newspaper at present, which lead to a complicated preparation and a difficult separation at the end of adsorption. In this study, we reported a simple, effective and renewable adsorption material assembled with waste newspaper and graphene oxide (GO). The adsorption and durability of the GO/paper have been evaluated using heavy metal ions solution and industrial effluent from the bleaching plant of paper industry, and the adsorption isotherm and kinetics are also valuated. The results indicate that the maximum adsorption capacities of GO/paper are 75.41 mg/g, 29.04 mg/g and 31.35 mg/g for Pb2+, Ni2+, and Cd2+, respectively, and the regeneration efficiency of the adsorbent to each ion is reduced by less than 10% within three testing cycles. Moreover, the GO/paper has a superior performance of removing the residual lignin and Chemical Oxygen Demand of the bleaching effluent, the adsorption of which are 64.4 mg/g and 225.7 mg/g, respectively. All these results highlight that the GO/paper as an environment-friendly, renewable and low-cost material possess an excellent adsorption capacity for both heavy metal ions and industrial wastewater.

中文翻译：

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氧化石墨烯改性废报纸去除重金属离子及其在工业废水中的应用

摘要 废报纸作为吸附剂去除污染物，目前仅限于从报纸中提取纤维，制备复杂，吸附末期分离困难。在这项研究中，我们报道了一种由废报纸和氧化石墨烯（GO）组装而成的简单、有效且可再生的吸附材料。使用重金属离子溶液和造纸工业漂白厂的工业废水评估了GO/纸的吸附性和耐久性，还评估了吸附等温线和动力学。结果表明，GO/纸对Pb2+、Ni2+和Cd2+的最大吸附容量分别为75.41 mg/g、29.04 mg/g和31.35 mg/g，吸附剂对各离子的再生效率降低了在三个测试周期内小于 10%。此外，GO/纸具有优异的去除漂白废水中残留木质素和化学需氧量的性能，其吸附量分别为64.4 mg/g和225.7 mg/g。所有这些结果都表明，GO/纸作为一种环境友好、可再生和低成本的材料，对重金属离子和工业废水都具有出色的吸附能力。