STUDY ON THE EFFECTIVENESS OF TEXTILE DYING SLUDGE BIOCHAR IN TREATING REFRACTORY ORGANIC WASTEWATER

JIANG Yuzhu; HUI Helong; LIU Hongyi; DING Guangchao; LU Wenyi; LI Songgeng

doi:10.13205/j.hjgc.202210005

Volume 40 Issue 10

Oct. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(10): 32-39

JIANG Yuzhu, HUI Helong, LIU Hongyi, DING Guangchao, LU Wenyi, LI Songgeng. STUDY ON THE EFFECTIVENESS OF TEXTILE DYING SLUDGE BIOCHAR IN TREATING REFRACTORY ORGANIC WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(10): 32-39. doi: 10.13205/j.hjgc.202210005

Citation:

JIANG Yuzhu, HUI Helong, LIU Hongyi, DING Guangchao, LU Wenyi, LI Songgeng. STUDY ON THE EFFECTIVENESS OF TEXTILE DYING SLUDGE BIOCHAR IN TREATING REFRACTORY ORGANIC WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(10): 32-39. doi: 10.13205/j.hjgc.202210005

Citation:

JIANG Yuzhu, HUI Helong, LIU Hongyi, DING Guangchao, LU Wenyi, LI Songgeng. STUDY ON THE EFFECTIVENESS OF TEXTILE DYING SLUDGE BIOCHAR IN TREATING REFRACTORY ORGANIC WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(10): 32-39. doi: 10.13205/j.hjgc.202210005

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STUDY ON THE EFFECTIVENESS OF TEXTILE DYING SLUDGE BIOCHAR IN TREATING REFRACTORY ORGANIC WASTEWATER

doi: 10.13205/j.hjgc.202210005

1. State Key Lab of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2. School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100190, China;
3. Binzhou Institute of Technology, Binzhou 256600, China

Received Date: 2022-01-16

Abstract

Abstract

The sludge-based carbon (SC) was prepared from textile dyeing sludge, and the impact of carbonization temperature and reaction time on the adsorption capacity of SC treating refractory industrial wastewater were investigated. Simultaneously the adsorption preference of SC and commercial activated carbon (CAC) was compared and studied. The results indicate that the SC derived from higher carbonization temperature can own more specific surface area, pore volume and deeper graphitization degree which facilitate its adsorption capacity. The SC-900℃ owns more than 90% mesoporous pore volume and it's specific surface area reaches 140.65 m²/g. The chemical oxygen demand (COD) removal rate of SC-900℃ treating coking wastewater and digest filtrate is as effective as 70% that of CAC. Besides, the SC-900℃(89.56%)present superior decolorizing effect than CAC(16.70%)when treating high chromaticity digestion filtrate. The macromolecular pollutants can be rapidly adsorbed by SC, the adsorption equilibrium time of SC-900℃(≤ 120 min) treating digestion filtrate is significantly lower than that of CAC(>24 h); Especially, the humus-like macromolecular compounds containing chromogenic functional groups could be selectively absorbed in the mesoporous (3.8~5.4 nm) of SC. At last, some guidance suggestions for industrialization application of SC to treat refractory industrial wastewater are put forward based on above research results.
- textile dyeing sludge,
- biochar,
- refractory industrial wastewater,
- adsorption

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References(18)

References

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