AC (particle size: 4–6
mm) and biochar were obtained from Henan province, China. Zeolite
(particle size: 2–4 mm) was obtained from Hebei province. Coal
ash (Shanxi province, China) and clay (Beijing local soil) were washed
with deionized water, dried at 100 °C for 24 h, and then sieved
through 180 mesh before use (particle size < 90 μm). Na2SO3 and diatomite were purchased from Beijing Chemical
Works (Beijing, China). Pure oxygen (99.99%) was used in this experiment.
All chemicals were analytical grade and used without further purification.
Water was obtained from a Milli-Q system (Millipore Corp., Boston,
MA).
mm) and biochar were obtained from Henan province, China. Zeolite
(particle size: 2–4 mm) was obtained from Hebei province. Coal
ash (Shanxi province, China) and clay (Beijing local soil) were washed
with deionized water, dried at 100 °C for 24 h, and then sieved
through 180 mesh before use (particle size < 90 μm). Na2SO3 and diatomite were purchased from Beijing Chemical
Works (Beijing, China). Pure oxygen (99.99%) was used in this experiment.
All chemicals were analytical grade and used without further purification.
Water was obtained from a Milli-Q system (Millipore Corp., Boston,
MA).