1. S. Wijetunga, X. Li, C. Jian, Effect of organic load on decolourization of textile wastewater containing acid dyes in upflow anaerobic sludge blanket reactor, J. Hazard. Mater., 177 (2010) 792–798.
  2. B. Manu, S. Chaudhari, Anaerobic decolorization of simulated textile wastewater containing azo dyes, Bioresour. Technol., 82 (2002) 225–231.
  3. A. Verma, P. Bhunia, R. Dash , R. Tyagi, R. Surampalli, Effects of physico-chemical pre-treatment on the performance of an upflow anaerobic sludge blanket (UASB) reactor treating textile wastewater: application of full factorial central composite design, Canad. J. Chem. Eng., 93 (2015) 808–818.
  4. W. Somasiri, X. Li, W. Ruan, C. Jian, Evaluation of the efficacy of upflow anaerobic sludge blanket reactor in removal of colour and reduction of COD in real textile wastewater, Bioresour. Technol., 99 (2008) 3692–3699.
  5. C. Couras, V. Louros, T. Gameiro, N. Alves, A. Silva, M. Capela, L. Arroja, H. Nadias, Anaerobic degradation of dairy wastewater in intermittent UASB reactors: influence of effluent recirculation, Environ. Technol., 36 (2015) 2227–2238.
  6. S. Farajzadehha, S. Mirbagheri, S. Farajzadehha, J. Shayegan, Lab-scale study of HRT and OLR optimization in UASB reactor for pretreating fortified wastewater in various operational temperatures, APCBEE Procedia, 1 (2012) 90–95.
  7. A. dos Santos, F. Cervantes, J. van Lier, Review paper on current technologies for decolourisation of textile wastewaters: perspectives for anaerobic biotechnology, Bioresour. Technol., 98 (2007) 2369–2385.
  8. G.A. Amin, L. Vnens, Optimization of up-flow anaerobic sludge blanket reactor for treatment of composite fermentation and distillation wastewater, Afr. J. Biotechnol., 13 (2014) 1136–1142.
  9. P. Firmino, M. da Silva, F. Cervantes, A. dos Santos, Colour removal of dyes from synthetic and real textile wastewaters in one- and two-stage anaerobic systems, Bioresour. Technol., 101 (2010) 7773–7779.
  10. A. Tawkif, D. Zaki, M. Zahran, Combination of Up-flow Anaerobic Sludge Blanket and Down-flow Hanging Sponge System for Removal of Color from Reactive Dyes Wastewater, 17th International Water Technology Conference, Istanbul, 2013.
  11. K. Muda, A. Aris, M. Salim, Z. Ibrahim, A. Yahya, M. van Loosdrecht, A. Ahmad, M. Nawahwi, Development of granular sludge for textile wastewater treatment, Water Res., 44 (2010) 4341–4350.
  12. M. Işik, D. Sponza, Anaerobic/aerobic treatment of a simulated textile wastewater, Sep. Purif. Technol., 60 (2008) 64–72.
  13. C. Couras, V. Louros, A. Grilo, J. Leitao, M. Capela, L. Arroja, M. Nadais, Effects of operational shocks on key microbial populations for biogas production in UASB (Upflow Anaerobic Sludge Blanket) reactors, Energy, 73 (2014) 866–874.
  14. G. Lettinga, L. Hulshoff Pol, UASB-process design for various types of wastewaters, Water Sci. Technol., 24 (1991) 87–107.
  15. H. Nadais, I. Capela, L. Arroja, A. Duarte, Optimum cycle time for intermittent UASB reactors treating dairy wastewater, Water Res., 39 (2005) 1511–1518.
  16. APHA/AWWA/WEF, Standard Methods for the Examination of Water and Wastewater, 2012, 541 p.
  17. N. Coelho, A. Rodrigues, L. Arroja, I. Capela, Effect of non-feeding period length on the intermittent operation of UASB reactors treating dairy effluents, Biotechnol. Bioeng., 96 (2007) 244–249.
  18. W. Somasiri, W. Ruan, L. Xiufen, C. Jian, Decolourization of textile wastewater containing acid dyes in UASB reactor system under mixed anaerobic granular sludge, Electron. J. Environ. Agric. Food Chem., 5 (2006) 1224–1234.
  19. S. Ong, E. Toorisaka, M. Hirata, T. Hano, Decolorization of azo dye (Orange II) in a sequential UASB-SBR system, Sep. Purif. Technol., 42 (2005) 297–302.
  20. M. Latif, R. Ghufran, Z. Wahid, A. Ahmad, Integrated application of upflow anaerobic sludge blanket reactor for the treatment of wastewaters, Water Res., 45 (2011) 4683–4699.
  21. H. Nadais, M. Barbosa, A. Almeida, A. Cunha, I. Capela, L. Arroja, Intermittent Operation of UASB Reactors as a Strategy to Enhance Anaerobic Degradation of Dairy Wastewaters, Proc. 6th WSEAS International Conference on Environment, Ecosystem and Development, 2008, pp. 38–43.
  22. M. Senthilkumar, G. Gnanapragasam, V. Arutchelvan, S. Nagarajan, Treatment of textile dyeing wastewater using two-phase pilot plant UASB reactor with sago wastewater as co-substrate, Chem. Eng. J., 166 (2011) 10–14.
  23. N. Lourenço, J. Novais, H. Pinheiro, Effect of some operational parameters on textile dye biodegradation in a sequential batch reactor, J. Biotechnol., 89 (2001) 163–174.
  24. H. Hendriken, B. Ahring, Integrated removal of nitrate and carbon in an upflow anaerobic sludge blanket (UASB) reacctor: operating performance, Water Res., 30 (1996) 1451–1458.
  25. J. de Sousa, K. Santos, I. Henrique, D. Brasil, E. Santos, Anaerobic digestion and the denitrification in UASB reactor, J. Urban Environ. Eng., 2 (2008) 63–67.
  26. P. Ndegwa, D. Hamilton, J. Lalman, H. Cumba, Effects of cyclefrequency and temperature on the performance of anaerobic sequencing batch reactors (ASBRs) treating swine waste, Bioresour. Technol., 99 (2008) 1972–1980.
  27. G. Yilmaz, R. Lemaire, J. Keller, Z. Yuan, Simultaneous Nitrification, Denitrification, and phosphorus removal from nutrient-rich industrial wastewater using granular sludge, Biotechnol. Bioeng., 100 (2008) 529–541.