Abstract

In this study, acid treated Punica granatum (PG) peels were used for effective removal of Diamond green (DG) dye, commonly found in textile industry waste. Acid treatment enhanced the efficiency of this process along with increasing shelf life and stability of bio-adsorbent by reducing fungal attack risk. Optimized operational parameters for removing DG dye using PG peels powder were: 35-minute contact time, 75 rpm agitation speed, 50°C temperature and pH of 2. Isothermal study results showed that maximum dye removing capacity was 29.08 mg/g. ΔG and ΔH values were −6.384 and −0.05 kJ/mol, respectively indicating that DG dye adsorption on acid treated PG peels is spontaneous and exothermic in nature. It was found that for batch scale adsorptive removal of basic dyes like DG, acid treated Punica granatum peels were effective bio-waste that can be used from our indigenous sources in an effective way.

摘要

在这项研究中，酸处理石榴(PG) 果皮用于有效去除钻石绿 (DG) 染料，这种染料常见于纺织工业废料中。酸处理通过降低真菌侵袭风险提高了该过程的效率，同时增加了生物吸附剂的保质期和稳定性。使用 PG 果皮粉末去除 DG 染料的优化操作参数为：35 分钟接触时间、75 rpm 搅拌速度、50°C 温度和 2 的 pH 值。等温研究结果表明，最大染料去除能力为 29.08 mg/g。ΔG 和 ΔH 值分别为 -6.384 和 -0.05 kJ/mol，表明 DG 染料在酸处理的 PG 果皮上的吸附本质上是自发的和放热的。据发现，对于碱性染料（如 DG）的批量吸附去除，酸处理石榴皮是有效的生物废物，可以有效地从我们的本土资源中使用。