巴基斯坦是一个生产大量水果的农业国家,喜欢:芒果,香蕉,苹果,桃子,葡萄,李子,各种柑橘类水果,包括柠檬,葡萄柚,还有橘子.到目前为止,大多数水果的果皮通常都被浪费掉了,没有在任何地方得到适当的利用。在这项工作中,在受控的空气供应下,通过缓慢热解将香蕉和葡萄柚的果皮转化为生物炭,并在用ZnCl2和十二烷基硫酸钠(SDS)进行化学改性后,用于从水性介质中螯合氰根离子。通过各种仪器技术对改性生物炭进行了表征,喜欢:SEM,FTIR,TGA,和CHNS。不同的参数,喜欢:时间,温度,pH值,和影响氰离子吸附的吸附剂剂量,对制备的生物炭进行了优化,并了解了吸附现象,进行了动力学和热力学研究。通过使用标准离子选择电极系统估算氰根离子的浓度,发现十二烷基硫酸钠处理过的香蕉皮生物炭显示出更多的吸附能力,即,与所有样品相比:17.080mg/g。目前的工作表明,从水果废物产生的生物炭具有足够的潜力,以消除水中的痕量氰化物,特别是用十二烷基硫酸钠处理后。
亚洲和非洲国家的一个工业区使用传统技术进行采矿是废水中氰化物毒性的主要原因。所以,在这里,由香蕉和葡萄果皮制成的化学制造的生物炭用于去除氰离子,以绿色方式利用当地资源控制水生污染。良好的结果表明了该工艺的可行性,这是成本有效的,方便,生态友好,和可持续的。
Pakistan is an agricultural country producing plenty of fruits, like: mango, banana, apple, peaches, grapes, plums, variety of citrus fruits including lemon, grapefruit, and oranges. So far the peels of most of the fruits are usually wasted and not properly utilized anywhere. In this work, the peels of banana and grapefruit are converted into biochar by slow pyrolysis under controlled supply of air and used for sequestering cyanide ions from aqueous medium after chemical modification with ZnCl2 and sodium dodecyl sulfate (SDS). The modified biochar was characterized by various instrumental techniques, like: SEM, FTIR, TGA, and CHNS. Different parameters, like: time, temperature, pH, and dose of adsorbent affecting the adsorption of cyanide ions, onto prepared biochar were optimized and to understand the adsorption phenomenon, kinetic and thermodynamic studies were performed. Concentration of cyanide ions was estimated by employing standard ion selective electrode system and it is found that Sodium Dodecyl Sulfate treated biochar of banana peels shown more adsorption capacity, i.e.,: 17.080 mg/g as compared to all samples. Present work revealed that the biochar produced from the fruit waste has sufficient potential to eliminate trace quantities of cyanide from water, especially after treatment with sodium dodecyl sulfate.
An industrial area in Asian and African countries where mining is done using traditional techniques is the major cause of cyanide toxicity in wastewater streams. So, here chemically fabricated biochar made by peels of banana and grape fruit is employed for removal of cyanide ion for controlling aquatic pollution using local resources in green way. Favorable results indicated the feasibility of this process, which is cost effective, convenient, ecofriendly, and sustainable.