Ball milling boosted the activation of peroxymonosulfate by biochar for tetracycline removal

H2O2 activated moxa ash via ball milling for ultrafast removal of mitoxantrone

“…2h, indicating that the defect degree of moxa ash increases through sacrificing the degree of graphitization after ball milling. 34 The zeta potential of moxa ash shows a similar declining trend with pH value for the four samples (Fig. 2i).…”

Preparation and characterisation of graphitic biochar materials derived from rose oil industry waste via different pyrolysis durations and ball milling for advanced composites

“…Four distinct peaks were observed, with peak centres of 1326 cm −1 , 1624 cm −1 (, 2326 cm −1 and 2931 cm −1 . The peak at 1326 cm −1 is attributed to the OH in-plane bending, which corresponds to the presence of a tertiary alcohol or phenol [57]; the 1624 cm −1 peak indicates the presence of C=C stretching, which indicates the presence of lignin in the biochar [58]; 2326 cm −1 indicates the presence of groups with triple bond structures such as C ≡ N (nitriles) and C ≡ C (alkynes) groups on biochar [59]; and 2931 cm −1 is assigned to the hydrogen-bonded OH groups of dimeric COOH groups [60].…”

Solvent-Free Synthesis of MgO-Modified Biochars for Phosphorus Removal from Wastewater

“…The result of the adsorption experiment (Figure 1d) showed that 2MgO/BC-450-0.5 had the maximum phosphorus adsorption capacity (176.42 mg g −1 ). The morphologies (Figure S5) of MgOmodified biochars demonstrated that ball milling treatment for a short time could break the samples into small particles, but milling for a longer time could cause the samples to agglomerate together, due to the compaction of ball milling [45]. This was the probable reason why 2MgO/BC-450-2 and 2MgO/BC-450-10 had lower specific surface areas and smaller pore volumes (Table 1).…”