In present research report four types of biocomposites were synthesized and characterized by surface area analysis (SEM–EDX); porosity (BET), X-Ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). These synthesized bio-composites were further examined for Zn(II) removal and recovery in batch reactors followed by column experiments using industrial effluent. The Aspergillus flavus NA9 immobilized glutaraldehyde cross-linked calcium alginate beads (FGCAB) proved as a novel biosorbent with maximum uptake capacity of (324 ± 2.1) mg Zn(II)/g in the studied concentration range (100–600 mg of Zn(II)/L). The chemistry of Zn and FGCAB interaction was studied using SEM–EDX and XRD analysis. Isotherm models used to analyze the data generated in batch bioreactors showed a best fit to Freundlich isotherm. Column studies depicted maximum 89.6% Zn(II) recovery with FGCAB using 0.01 M HCl. The column containing 1.5 g dry weight of FGCAB purified 5.25 L of paint industry effluent (9.58 mg Zn(II) /L before breakthrough occurred and became saturated after 11 L of influent, which revived upto three sorption–desorption cycles. Thus, A. flavus NA9 immobilized glutaraldehyde cross-linked alginate beads could be promising sorbent for treatment of Zn(II) contaminated industrial waste stream.

在本研究报告中，合成了四种类型的生物复合材料，并通过表面积分析（SEM-EDX）对其进行了表征。孔隙率（BET），X射线衍射（XRD）和傅立叶变换红外光谱（FTIR）。在分批反应器中进一步检查了这些合成的生物复合材料中Zn（II）的去除和回收，然后使用工业废水进行了柱实验。在黄曲霉NA9固定的戊二醛交联海藻酸钙珠（FGCAB）是一种新型生物吸附剂，在所研究的浓度范围内（100–600 mg Zn（II）/）的最大吸收量为（324±2.1）mg Zn（II）/ g。 L）。使用SEM–EDX和XRD分析研究了Zn和FGCAB相互作用的化学反应。用于分析分批生物反应器中生成的数据的等温线模型显示出最适合Freundlich等温线。色谱柱研究显示，使用FGCAB和0.01 M HCl回收的锌（II）最多可达到89.6％。含FGCAB 1.5克干重的柱纯化5.25大号涂料工业流出物（9.58毫克的Zn（发生II）/突破之前L和后11升进水，其恢复高达3吸附-解吸循环的达到饱和，因此，A. av NA9固定的戊二醛交联藻酸盐微珠可能是有前途的吸附剂，用于处理受Zn（II）污染的工业废水。