Efektivitas Ampas Tahu Sebagai Adsorben Logam Tembaga Pada Air Limbah Industri

Dahlia Rosma Indah, Husnul Hatimah, Hulyadi Hulyadi
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Abstract

Copper is one of the toxic metals for health and the environment. In humans, high doses of copper metal can cause vomiting, dizziness, weakness, kidney and liver symptoms, anemia, to coma, and in severe cases, the patient can die. Judging from the dangers, proper waste management is needed to reduce the side effects of these pollutants. A practical and inexpensive technology is an adsorption adsorption technique using an efficient and easily available natural adsorbent, namely tofu dregs. The protein contained in tofu is one of the reasons for using tofu waste as an adsorbent. The absorption of amino acids that form two-charged ions (zwitter ions) is owned by proteins. Toxic metal can be bound to protein as metallotionein. The study consisted of four stages, namely (1) Analysis of initial copper content in silver craft waste; (2) Preparation of tofu waste adsorbent; (3) Characterization of tofu dregs adsorbent; and (4) variation of adsorption contact time. The study used a laboratory-scale experimental method. The adsorbent was contacted with the sample using a magnetic stirrer at various times. Instrument Atomic Absorption Spectrometer was used for the analysis of copper metal content and identification of its functional groups using an infrared spectrometer with the result that tofu waste has functional groups -OH, NH (stretching), CH (aliphatic), C=O, -OH (bending vibrations). , and CO. Copper metal content obtained is 19.5979 ppm. The optimum adsorption time was reached at 120 minutes with an optimum adsorption efficiency of 54.88%.
在工业废水中铜废料的作用
铜是对健康和环境有害的金属之一。对人类来说,高剂量的铜金属会导致呕吐、头晕、虚弱、肾脏和肝脏症状、贫血、昏迷,严重的病人可能会死亡。从危险来看,需要适当的废物管理来减少这些污染物的副作用。利用高效易得的天然吸附剂,即豆腐渣,进行吸附吸附是一种实用而廉价的技术。豆腐中所含的蛋白质是利用豆腐渣作为吸附剂的原因之一。氨基酸的吸收形成双电荷离子(两性离子)是由蛋白质拥有的。有毒金属可以以金属蛋白的形式与蛋白质结合。研究分为四个阶段,即:(1)工艺废铜初始含量分析;(2)豆腐渣吸附剂的制备;(3)豆腐渣吸附剂的表征;④吸附接触时间的变化。这项研究采用了实验室规模的实验方法。吸附剂在不同时间用磁力搅拌器与样品接触。采用仪器原子吸收光谱仪对豆腐渣中的铜金属含量进行分析,并用红外光谱仪对其官能团进行鉴定,发现豆腐渣中有官能团-OH、NH(拉伸)、CH(脂肪族)、C=O、-OH(弯曲振动)。铜金属含量为19.5979 ppm。最佳吸附时间为120 min,最佳吸附效率为54.88%。
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