[Research on sorption and transport characteristics of ligninolytic enzymes in different compost substances].
To understand the characteristics of ligninolytic enzymes sorption and transport in different compost substances, ligninolytic enzymes adsorption on soil, vegetable leaf, rice straw and chaff was comparatively studied through batch jar tests and relevant kinetics and isotherm equilibrium were discussed as well as a column experiment was performed to study the process of transport. The results showed that the sorption efficiency was depended on the sorts of substances. The adsorptive capacities of soil, vegetable leaf, rice straw and chaff to lignin peroxidase (LiP) were 1.22 U x g(-1), 1.27 U x g(-1), 1.13 U x g(-1), 1.22 U x g(-1) and to manganese peroxidase (MnP) were 5.09 U x g(-1), 4.88 U x g(-1), 4.43 U x g(-1), 3.95 U x g(-1), respectively. Comparing the kinetic models of LiP and MnP adsorption, the pseudo-second-order reaction model (R2 0.973-0.999 7) was the best of the models. Elovich equation was a bit better than pseudo-first-order kinetic which was the worst. The equilibrium data could be fitted well with Langmuir model while it could not satisfied with Freundlich model. The adsorptive saturation of soil, vegetable leaf, rice straw and chaff to LiP were 1.23 U x g(-1), 1.30 U x g(-1), 1.17 U x g(-1), 1.14 U x g(-1) and to MnP were 5.70 U x g(-1), 5.19 U x g(-1), 4.73 U x g(-1), 4.14 U x g(-1). LiP and MnP had good transport capability in straw and chaff to move to the deepest layer of 10 mL while remained in the superficial layers in soil and vegetable leaf.
Zhao
Mei-Hua
MH
College of Environmental Science and Engineering, Hunan University, Changsha 410082, China. bflower1221@163.com
Zeng
Guang-Ming
GM
Huang
Dan-Lian
DL
Feng
Chong-Ling
CL
Huang
Chao
C
Hu
Shuang
S
Su
Feng-Feng
FF
Lai
Cui
C
Wei
Zhen
Z
D000327:Adsorption; D010544:Peroxidases / Q000378:metabolism*; D018515:Plant Leaves / Q000378:metabolism; D012037:Refuse Disposal / Q000379:methods*; D012987:Soil / Q000737:chemistry*; D014675:Vegetables / Q000378:metabolism
D012987:Soil; D010544:Peroxidases; C042858:lignin peroxidase; C051129:manganese peroxidase