Insight into metal binding properties of biochar-derived DOM using EEM-PARAFAC and differential absorption spectra combined with two-dimensional correlation spectroscopy.

A large amount of biochar-derived dissolved organic matter (BDOM) will be released into the environment with biochars application into repairing soil/water, which may alter the fate and transport of contaminants. In this study, four DOM samples were extracted from cauliflower root biochar (CRBC), reed straw biochar (RSBC), corn stalks biochar (CSBC), and potato stalk biochar (PSBC). Excitation-emission matrix combined with parallel factor (EEM-PARAFAC) analysis, differential absorbance spectra (DAS), and two-dimensional correlation spectroscopy (2D-COS) analysis were applied to explore the complexation property of BDOM with metals.

Effective removal of carbamazepine and diclofenac by CuO/CuO/Cu-biochar composite with different adsorption mechanisms.

In this study, the CuO/CuO/Cu-biochar composite (CBC) was fabricated by calcining Cu-loaded cauliflower root at 500 °C. The CBC displayed the higher specific surface area and total pore volume than raw biochar, which attributed to Cu acting as a pore-forming agent in the synthesis process. The adsorption experiments indicated that CBC could remove 88.

Fabrication of vessel-like biochar-based heterojunction photocatalyst BiS/BiOBr/BC for diclofenac removal under visible LED light irradiation: Mechanistic investigation and intermediates analysis.

In this work, a novel, economical and effective vessel-like biochar-based photocatalyst BiS/BiOBr/BC was synthesized by a facile one-pot solvothermal method for the first time. A series of characterization analyses demonstrated the successful preparation of photocatalyst BiS/BiOBr/BC. Furthermore, diclofenac (DCF) as the target contaminant was applied to elucidate the enhanced photocatalytic performance (93.

Effective removal of two fluoroquinolone antibiotics by PEG-4000 stabilized nanoscale zero-valent iron supported onto zeolite (PZ-NZVI).

In this work, nanoscale zero-valent iron (NZVI) was synthesized via liquid phase reduction method with surfactant polyethylene glycol (PEG-4000) modified and supported onto zeolite to prepare PZ-NZVI composite. SEM-EDS, XPS, BET.etc.

Coating magnetic biochar with humic acid for high efficient removal of fluoroquinolone antibiotics in water.

As antibiotics are widely consumed, fluoroquinolones (FQs) behave to have huge hidden danger to human health. Various agricultural residues have potential to produce biochar rich in porous structure for adsorption of contaminants. In this study, potato leaves and stems were pyrolyzed at 500 °C under anoxic condition for biochar (BC) preparation.

Efficient removal of oxytetracycline from aqueous solution using magnetic montmorillonite-biochar composite prepared by one step pyrolysis.

Three adsorbents, namely, original biochar (CLB), montmorillonite (MMT)-biochar composite (MBC), and magnetic MMT-biochar composite (MMBC) were successfully fabricated by one step pyrolysis of original cauliflower (Brassica oleracea L.) leaves, mixture of cauliflower leaves and MMT, and FeCl-laden mixture of cauliflower leaves and MMT under limited oxygen atmosphere, respectively. The characterizations of samples indicated that substantial MMT mineral particles and FeO nanoparticle were dispersed on the surface of MMBC.

Efficient removal of oxytetracycline from aqueous solution by a novel magnetic clay-biochar composite using natural attapulgite and cauliflower leaves.

A novel magnetic attapulgite-biochar composite (MABC) derived from natural attapulgite, cauliflower leaves, and FeCl was successfully prepared as a low-cost adsorbent for oxytetracycline (OTC) removal from aqueous solution. Characterization experiments by different techniques suggested that attapulgite clay particles and FeO nanoparticles were successfully covered on the MABC surface. Compared with the pristine biochar (CLB) and attapulgite-biochar composite (ABC), MABC had the largest surface area, well-developed pore structure, and more surface oxygen-containing functional groups which could interact with organic pollutant via hydrogen bonding, π-π electron coupling, complexation, and ion exchange.