Ferric sulfate

The chemical reagents mainly included: sodium hydroxide (NaOH), potassium phosphate monobasic (KH₂PO₄), sulfuric acid (H₂SO₄), hydrogen chloride (HCl), ascorbic acid (C₆H₈O₆), ammonium molybdate ((NH₄)₆MO₇O₄·4H₂O), potassium antimony(III)oxide tartrate hemi-hydrate (C₄H₄KO₇Sb·1/2H₂O), ferric nitrate (Fe(NO)₃·9H₂O), ferric chloride (FeCl₃·6H₂O), sodium chloride (NaCl), sodium nitrate (NaNO₃), sodium sulfate (Na₂SO₄), ammonium chloride (NH₄Cl), sodium carbonate (Na₂CO₃), potassium persulfate (K₂S₂O₈), Ferric sulfate (Fe₂(SO₄)₃) and ferric reagent (LH-FE). Ferric sulfate was purchased from Xilong Chemical Co., Ltd, China, and LH-FE reagent was purchased from Beijing Lianhua Yongxing Technology Development Co., Ltd. The other reagents were purchased from Kelong Chemical Reagent Factory in Chengdu. All the chemicals were analytical grade. The simulated phosphorus-containing wastewater was prepared using potassium dihydrogen phosphate. The bamboo CNFs used in the experiment were provided by the State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, China, in a 1 wt% solution.

PSM was purchased from Tianhua Ecological Agriculture Development Co., Ltd. in October 2019. Hydrogen peroxide 30% was obtained from Tianli Chemical Reagent Co., Ltd. Salicylic acid was purchased from Baishi Chemical Co., Ltd. Ferric sulfate, ascorbic acid (Vc), and acetic acid were purchased from Xilong Chemical Co., Ltd. Hydrochloric acid and sulfuric acid were obtained from the Beijing Chemical Factory. Ethanol, ethyl acetate, sodium nitrite, and sodium hydroxide were purchased from Beilian Fine Chemicals Co., Ltd. DPPH and ABTS were obtained from Fuyang Manlin Biotechnology Co., Ltd. Chitosan and sodium alginate were purchased from Sinopharm Chemical Reagent Co., Ltd. Calcium carbonate was purchased from Fuchen Chemical Reagent Factory. Calcium chloride was obtained from Yongsheng Fine Chemical Co., Ltd. Potassium persulfate was purchased from Shengao Chemical Reagent Co., Ltd. Rutin was purchased from Nanjing Aoduofuni Biotechnology Co., Ltd. Aluminum nitrate was purchased from Chengdu Cologne Chemical Co., Ltd. AB‐8 MR was purchased from Guangfu Fine Chemical Research Institute. Water was purified by the Milli‐Q system (UPH‐II‐20T; Ulupure).