Sorption is an effective process for the remediation of mine water with low metal concentrations. To identify promising low-cost organic sorbents for nickel (Ni), adsorption and retention properties of peat, compost, brown algae, sawdust, and wood ash were compared. Batch adsorption and desorption experiments were conducted at pH 7 in 0.05 M NaNO₃ solutions to simulate the ionic strength and pH of a contaminated neutral drainage. Results of adsorption kinetic experiments were best represented by the Elovich model and the fastest rates were obtained with peat (796,075 mg g⁻¹ min⁻¹) and compost (791 mg g⁻¹ min⁻¹). Results of equilibration adsorption experiments were fitted to Langmuir and Freundlich isotherms and the highest adsorption capacities were observed for peat (around 22 mg g⁻¹) and compost (around 9 mg g⁻¹). Desorption experiments revealed that peat and compost adsorbed more Ni and also released a lower percentage of the adsorbed metal upon exposure to Ni-free solutions.

吸附是修复低金属浓度矿井水的有效方法。为了确定有前途的低成本有机镍吸附剂，比较了泥炭，堆肥，褐藻，锯末和木灰的吸附和保留特性。在pH值为7的0.05 M NaNO ₃溶液中进行分批吸附和解吸实验，以模拟受污染的中性排水的离子强度和pH。吸附动力学实验的结果最好用Elovich模型代表，用泥炭（796,075 mg g ^-1  min ^-1）和堆肥（791 mg g ^-1  min ^-1）可获得最快的吸附速率。）。平衡吸附实验的结果适用于Langmuir和Freundlich等温线，对泥炭（约22 mg g ^-1）和堆肥（约9 mg g ^-1）观察到最高吸附容量。解吸实验表明，泥炭和堆肥吸附更多的镍，并且在暴露于无镍溶液中也释放出较低百分比的吸附金属。