果以擬二級動力學的R!最高，分別為：0.9992、0.9993、0.9988，表明 了該吸附過程主要為化學吸附。
5. 在pH 的影響實驗中，當初始 pH 較低時，細胞吸附位點被質子化吸附 效果較差；當初始pH 較高時，促進藻類活性，且細胞表面官能團去質 子化，吸附效果好。Qmax（Nd3+）=97.26 mg/g，Qmax（Eu3+）=122.31 mg/g，Qmax（Gd3+）=108.11 mg/g。證明了吸附過程涉及了靜電吸附機 制、主動運輸等。
11. 批次解吸實驗中，可以發現 0.01 M EDTA 溶液具有良好的解吸效果且對 吸附劑不造成明顯的破壞。對Nd3+、Eu3+、Gd3+解吸率可達97.66%、
98.12%、98.01%。
5.2 建議
1. 在現實情況中，稀土廢水污染往往是存在多種稀土離子，具有復合性和 多樣性，當多種稀土離子共同作用於微藻細胞時，其效果與單一稀土離 子暴露有很大的不同，因此可以開展研究四尾柵藻對混合稀土離子溶液 的吸附效果。
2. 從吸附等溫模型擬合結果可以看出，雖然擬合Langmuir 等温吸附平衡 模型效果較好，但對於平衡濃度較低時的qe的擬合結果與實際量有所偏 差。因此可以研究等溫模型，對參數進行修正，建立成功的吸附模式。
3. 本研究對吸附劑的預處理僅使用了普通清洗以去除雜質，為了有效地改 善和提高吸附效果，可以增添吸附劑預處理步驟。
4. 對解吸後的微藻細胞可作表征分析，並做復吸實驗，能更加具體的判斷 吸附劑的再生結果。
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