The potential of an agro-based industrial waste, dry empty oil palm bunch (DEOPB), obtained from a local oil palm processing mill was explored to treat effluent from a petrochemical plant. The adsorbent was subjected to pyrolysis and chemically activated using a 0.1mol hydrochloric acid (HCl). The adsorption behaviors of iron, copper and cadmium were found to obey Pseudo Second Order kinetic model, Brunauer, Emmet and Teller (BET) and the Langmuir isotherm models were used to fit the iron, copper and cadmium adsorption isotherm onto the DEOPB activated carbon with their equilibrium capacities agreeing with experimental data except for the lead component that showed no effect. The heavy metals contaminants investigated using this technique was found to have been removed from the wastewater stream in the following percentage efficiency: iron; 57%, copper; 99.6% and cadmium; 90% but was ineffective in the removal of the lead component as its concentration remained unchanged throughout the experiment. The locally produced activated carbon was subjected to laboratory analysis and its properties (Density; 0.369g/m 3 , Particle Size; 0.18mm, Ash Content; 5.73%ww, Porosity; 90%, Surface Area; 691.85 m 2 /g) were found to favorably compare with commercial activated carbon.
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机译：探索了从当地油棕加工厂获得的以农业为基础的工业废料，干空油棕束（DEOPB）的潜力，以处理石化厂的废水。吸附剂进行热解，并使用0.1 mol盐酸（HCl）进行化学活化。发现铁，铜和镉的吸附行为符合伪二级动力学模型，Brunauer，Emmet和Teller（BET），并用Langmuir等温线模型将铁，铜和镉的吸附等温线拟合到DEOPB活性炭上。它们的平衡容量与实验数据一致，除了铅成分没有显示效果。发现使用该技术研究的重金属污染物已按以下百分比效率从废水中去除：铁; 57％，铜; 99.6％和镉; 90％，但在去除铅组分方面无效，因为在整个实验中其浓度保持不变。对本地生产的活性炭进行实验室分析，其性能（密度; 0.369g / m 3;粒度; 0.18mm;灰分; 5.73％ww;孔隙率; 90％;表面积; 691.85 m 2 / g）为被发现与商业活性炭相比具有优势。
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