Interfacial integration of zirconium components with amino-modified lignin for selective and efficient phosphate capture

Robust and multifunctional natural polyphenolic composites for water remediation

“…9b). 155 The obtained LIG-based adsorbent exhibited an adsorption amount of 167.7 mg g À1 for phosphate, in which the ligand exchange and electrostatic attraction were responsible for the whole adsorption process. Although boron is an essential micronutrient, an excessive increase of boron concentration has been observed recently in irrigation and drinking water, probably due to some natural and anthropogenic factors (e.g., deposits leaching and industrial activity).…”

Hybrid amino-terminated lignin microspheres loaded with magnetite and manganese oxide nanoparticles: An effective hazardous oxyanions adsorbent

“…The capacity of non-activated lignin for adsorption is reasonably low and, generally, in a comparison with activated carbon lignin is showing significantly lower efficiency of hazardous ion removal [57]. Having the fitting activation conditions of lignin-based materials (amino-modified [43,60,62,72], carboxy-methylated [71], triethylenetetramine activated [18], various hybrid materials ( [22]; [36]), modified lignin-gels [37] etc., it is feasible to obtain adsorbents with the solid capacities for the removal of hazardous species from the water. Researchers also explored several nanoparticles for additional functionalization of biosorbents due to their large active surface in comparison to the volumetric and specific features (e.g.…”

Reusable Hyperbranched Polyethylenimine-Functionalized Ethyl Cellulose Film for the Removal of Phosphate with Easy Separation

“…14−20 Although great achievements on phosphate capture have been made, most of the reported adsorption materials may have some drawbacks that restrict their application in wastewater treatment, such as relatively high cost, nonrecoverability, and nonbiodegradability. 21 Thus, it is extremely urgent to develop a cost-effective, sustainable adsorbent for phosphate removal using an abundant, sustainable, and environmentally benign material.…”

“…47 The adsorption capacity decreased with increasing pH value, and the maximum adsorption amount of phosphate was 16.23 mg g −1 at a pH of around 3. This high phosphate adsorption performance is attributed to the fact that under acidic conditions, amino groups on the HPEI-EC film surface can be protonated to produce positively charged active adsorption sites like −NH 3 + , which can form electrostatic interactions with negatively charged PO 4 3− ions, 21 leading to an increase in the adsorption amount of phosphate. On the other hand, at a pH above 6, increasing the solution pH value not only reduces the protonation of the amino groups on the surface of the HPEI-EC film, but also improves the concentration of hydroxyl groups in solution.…”

“…Various methods have been developed to effectively remove phosphate from water, such as chemical precipitation, biological decomposition, membrane separation, ion exchange, and physical adsorption. Among these methods, adsorption has been recommended because of its operational simplicity, low cost, high removal efficiency, and ability to remove phosphate at a low concentration. − To date, many adsorption materials have been reported, which include metal organic frameworks, mesoporous silica, activated carbon nanofibers, graphene, graphite oxide, layered double hydroxides, and their composites. − Although great achievements on phosphate capture have been made, most of the reported adsorption materials may have some drawbacks that restrict their application in wastewater treatment, such as relatively high cost, nonrecoverability, and nonbiodegradability . Thus, it is extremely urgent to develop a cost-effective, sustainable adsorbent for phosphate removal using an abundant, sustainable, and environmentally benign material.…”