Contaminated water represents a significant threat to public health, with heavy metals present in industrial effluents constituting a particular hazard. Conventional heavy metal removal processes are often expensive and rely on synthetic materials. Renewable adsorbents or filters, such as chitosan, provide a low-cost, simple alternative for treatment of water. Fungal chitin and hence fungal chitosan is a cheap, renewable, easily isolated, and abundant alternative to crustacean chitin. This study investigated the water treatment potential of chitosan-glucan nanopapers derived from common white-button mushroom (A. bisporus) extract as adsorptive filter. These nanopapers completely rejected 10 nm gold nanoparticles, indicating potential for virus filtration. They had copper ion (2 mM) adsorption capacities (up to 120 mg g⁻¹) increasing with degree of deacetylation of fungal chitin on par with or even outperforming current chitosan membranes with the advantage of simpler production, not requiring further crosslinking. In order to improve the performance of fungal chitosan-glucan filters, hybrid filters with cellulose microfibres from fibre sludge were prepared. Hybrid nanopapers exhibited significantly increased copper ion adsorption (162 mg g⁻¹) in conjunction with high water permeances (63,000 to 121,000 L h⁻¹ m⁻² MPa⁻¹). The simple manufacturing process and impressive filtration/adsorbent properties of these renewable filters make them a viable option for water treatment helping to reduce the ecological impact of traditional water treatment processes.

受污染的水对公众健康构成重大威胁，工业废水中的重金属构成特别的危害。常规的重金属去除工艺通常很昂贵并且依赖于合成材料。可再生的吸附剂或过滤器（例如壳聚糖）为水的处理提供了一种低成本，简单的替代方法。真菌几丁质，因此是真菌几丁质，是甲壳类甲壳质的廉价，可再生，易于分离和丰富的替代品。这项研究调查了来自普通白纽扣蘑菇（A. bisporus）的壳聚糖-葡聚糖纳米纸的水处理潜力。）提取作为吸附过滤器。这些纳米纸完全排斥了10 nm金纳米颗粒，表明存在病毒过滤的潜力。它们具有的铜离子（2 mM）吸附能力（高达120 mg g ^-1）随着真菌几丁质的脱乙酰化程度与目前的壳聚糖膜相提并论，甚至表现优于目前的壳聚糖膜，从而具有生产简单，无需进一步交联的优势。为了改善真菌壳聚糖-葡聚糖过滤器的性能，制备了具有来自纤维污泥的纤维素微纤维的杂化过滤器。混合纳米纸表现出显著增加铜离子吸附（162毫克克^-1在具有高水渗透率一起）（63000至121000 L H ^-1 米^-2 兆帕^-1）。这些可再生过滤器的简单制造过程和令人印象深刻的过滤/吸附性能使其成为水处理的可行选择，有助于减少传统水处理工艺的生态影响。