title: Anaerobic digestion of recalcitrant textile dyeing sludge with alternative pretreatment strategies.
abstract: Abundant organic compounds in textile dyeing sludge (TDS) provide possibility for its anaerobic digestion (AD) treatment. However, preliminary test showed little biogas generation in direct AD of the TDS during 20days. In order to improve the AD availability of TDS, alkaline, acid, thermal and thermal alkaline pretreatments were performed. Color and aromatic amines were specifically measured as extra characteristics for the AD of TDS. The rate-limiting steps of AD of TDS were slow hydrolysis rate and inhibited acidogenesis, which were somewhat overcome by pretreatments. Thermal alkaline pretreated TDS performed best enhancement on solubilisation. The biochemical methane potential tests revealed that thermal pretreated TDS showed highest total methane production of 55.9mL/gVSfedcompared to the control with little methane generation. However, thermal alkaline pretreated TDS did not perform well in BMP test as expected. Moreover, the hydrophilicity of reactive dyes in TDS could seriously affect dewaterability of TDS.
authors.affiliation: College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Xinyi
authors.initials: X
authors.lastname: Xiang
authors.affiliation: College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Shanghai 201620, China. Electronic address: cxg@dhu.edu.cn.
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Chen
authors.affiliation: College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Ruobin
authors.initials: R
authors.lastname: Dai
authors.affiliation: College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Luo
authors.affiliation: College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Puyue
authors.initials: P
authors.lastname: Ma
authors.affiliation: College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Shengsheng
authors.initials: S
authors.lastname: Ni
authors.affiliation: College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Shanghai 201620, China.
authors.forename: Chengyu
authors.initials: C
authors.lastname: Ma
mesh_terms: D000693:Anaerobiosis; D057919:Biological Oxygen Demand Analysis; D004396:Coloring Agents / Q000737:chemistry*; D005232:Fatty Acids, Volatile / Q000378:metabolism; D006851:Hydrochloric Acid / Q000494:pharmacology; D006868:Hydrolysis; D008697:Methane / Q000378:metabolism; D011134:Polysaccharides / Q000032:analysis; D011506:Proteins / Q000032:analysis; D012037:Refuse Disposal / Q000379:methods*; D012722:Sewage / Q000737:chemistry*; D012972:Sodium Hydroxide / Q000494:pharmacology; D012995:Solubility; D013696:Temperature; D013784:Textiles; D014835:Volatilization; D014867:Water
chemical_list: D004396:Coloring Agents; D005232:Fatty Acids, Volatile; D011134:Polysaccharides; D011506:Proteins; D012722:Sewage; D014867:Water; D012972:Sodium Hydroxide; D008697:Methane; D006851:Hydrochloric Acid
keywords: Aromatic amines; Dewaterability; Dyes; Thermal alkaline pretreatment; Thermal pretreatment