The aim of the present research work is to produce the activated carbon from raw jamun fruit seeds through physical, chemical and combined physico-chemical treatment for the removal of Fe (II) ions from contaminated water. The surface functionalized and surface modified adsorbents were characterized using different analytical techniques. The surface morphology of sorbents possesses rough surface that are amorphous in nature filled with pores that are obtained due to thermal and chemical treatments. The presence of functional groups in sorbents indicates the effective interaction with Fe (II) ions in water. The parameters influencing the adsorption studies like initial Fe (II) ion concentration, contact time, pH, adsorbent dosage and temperature were optimised. The results of the isotherm and kinetic studies revealed that the sulphuric acid modified followed by thermal treatment of raw jamun fruit seed showed maximum Langmuir adsorption capacity of 266.9 mg/g, following Pseudo first order kinetics. The thermodynamic separation of Fe (II) ion by adsorbents were exothermic, feasible and spontaneous process. Hence, the raw jamun fruit seeds can be modified into useable carboneous product through suitable techniques for eradicating water pollutants.

本研究工作的目的是通过物理、化学和物理-化学联合处理从生果核中生产活性炭，以去除污染水中的 Fe (II) 离子。使用不同的分析技术表征表面官能化和表面改性的吸附剂。吸附剂的表面形态具有粗糙的表面，本质上是无定形的，充满了由于热处理和化学处理而获得的孔隙。吸附剂中官能团的存在表明与水中的 Fe (II) 离子有效相互作用。对影响吸附研究的参数如初始 Fe (II) 离子浓度、接触时间、pH、吸附剂剂量和温度进行了优化。等温线和动力学研究的结果表明，按照伪一级动力学，对未加工的贾蒙果种子进行热处理后的硫酸改性显示出最大的朗缪尔吸附容量为 266.9 mg/g。吸附剂对Fe(II)离子的热力学分离是放热、可行和自发的过程。因此，通过合适的消除水污染物的技术，可以将未加工的火龙果种子改造成可用的碳质产品。