Abbott T, Eskicioglu C (2015) Effects of metal addition on odor and process stability during the anaerobic digestion of municipal waste sludge. Waste Manag 46:449–458. https://doi.org/10.1016/j.wasman.2015.07.050
Abdelsalam E, Samer M, Attia YA, Abdel-Hadi MA, Hassan HE, Badr Y (2017) Effects of co and ni nanoparticles on biogas and methane production from anaerobic digestion of slurry. Energy Convers Manage 141:108–119. https://doi.org/10.1016/j.enconman.2016.05.051
Ackman RG (1972) The analysis of fatty acids and related materials by gas-liquid chromatography. Prog Chem Fats Other Lipids 12:165–284. https://doi.org/10.1016/0079-6832(72)90003-1
Akgul D, Abbott T, Eskicioglu C (2017) Assessing iron and aluminum-based coagulants for odour and pathogen reductions in sludge digesters and enhanced digestate dewaterability. Sci Total Environ 598:881–888. https://doi.org/10.1016/j.scitotenv.2017.04.141
APHA (2005) Standard methods for the examination of water and wastewater. USA, Washington DC
Appels L, Baeyens J, Degrève J, Dewil R (2008) Principles and potential of the anaerobic digestion of waste-activated sludge. Prog Energy Combust Sci 34:755–781. https://doi.org/10.1016/j.pecs.2008.06.002
ASTM - American Society for Testing and Materials (2012) ASTM E2456, 2006 - standard terminology relating to nanotechnology. Am Soc Test Mater. https://doi.org/10.1520/E2456-06R12.2
Benn TM, Westerhoff P (2008) Nanoparticle silver released into water from commercially available sock fabrics. Environ Sci Technol 42:4133–4139. https://doi.org/10.1021/es7032718
Cervantes-Avilés P, Ida J, Toda T, Cuevas-Rodríguez G (2018) Effects and fate of TiO2 nanoparticles in the anaerobic treatment of wastewater and waste sludge. J Environ Manage 222:227–233. https://doi.org/10.1016/j.jenvman.2018.05.074
Chen Y, Cheng JJ, Creamer KS (2008) Inhibition of anaerobic digestion process: a review. Bioresour Technol 99(10):4044–4064. https://doi.org/10.1016/j.biortech.2007.01.057
Chen JL, Steele TWJ, Stuckey DC (2018) The effect of Fe2NiO4 and Fe4NiO4Zn magnetic nanoparticles on anaerobic digestion activity. Sci Total Environ 642:276–284. https://doi.org/10.1016/j.scitotenv.2018.05.373
Choi S, Johnston MV, Wang G, Huang CP (2017) Looking for engineered nanoparticles (ENPs) in wastewater treatment systems: qualification and quantification aspects. Sci Total Environ 590-591:809–817. https://doi.org/10.1016/j.scitotenv.2017.03.061
Gottschalk F, Sonderer T, Scholz RW, Nowack B (2009) Modelled environmental concentrations of engineered nanomaterials (TiO2, ZnO, Ag, CNT, Fullerenes) for different regions. Environ Sci Technol 43(24):9216–9222. https://doi.org/10.1021/es9015553
Hassanein A, Lansing S, Tikekar R (2019) Impact of metal nanoparticles on biogas production from poultry litter. Bioresour Technol 275:200–206. https://doi.org/10.1016/j.biortech.2018.12.048
Kaegi R, Ulrich A, Sinnet B, Vonbank R, Wichser A, Zuleeg S, Simmler H, Brunner S, Vonmont H, Burkhardt M, Boller M (2008) Synthetic TiO2 nanoparticle emission from exterior facades into the aquatic environment. Environ Pollut 156:233–239. https://doi.org/10.1016/j.envpol.2008.08.004
Kiser MA, Westerhoff P, Benn T, Wang Y, Pérez-Rivera J, Hristovski K (2009) Titanium nanomaterial removal and release from wastewater treatment plants. Environ Sci Technol 43:6757–6763. https://doi.org/10.1021/es901102n
Kor-Bicakci G, Ubay-Cokgor E, Eskicioglu C (2019) Effect of dewatered sludge microwave pretreatment temperature and duration on net energy generation and biosolids quality from anaerobic digestion. Energy 168:782–795. https://doi.org/10.1016/j.energy.2018.11.103
Kor-Bicakci G, Ubay-Cokgor E, Eskicioglu C (2020) Comparative analysis of bacterial and archaeal community structure in microwave pretreated thermophilic and mesophilic anaerobic digesters utilizing mixed sludge under organic overloading. Water 12(3):887. https://doi.org/10.3390/w12030887
Kumar A, Dixit CK (2017) Methods for characterization of nanoparticles. In: Nimesh S, Chandra R, Gupta N (eds) Advances in nanomedicine for the delivery of therapeutic nucleic acids. Woodhead Publishing, Sawston, CA, USA, pp 43–58
Labatut RA, Angenent LT, Scott NR (2014) Conventional mesophilic vs. thermophilic anaerobic digestion: a trade-off between performance and stability? Water Res 53:249–258. https://doi.org/10.1016/j.watres.2014.01.035
Lansdown AB (2004) A review of the use of silver in wound care: facts and fallacies. British Journal of Nursing. 13(1):6–19
Lee D, Lee Y (2019) Impact of adding metal nanoparticles on anaerobic digestion performance – A review. Bioresour Technol 292:121926. https://doi.org/10.1016/j.biortech.2019.121926
Lizama AC, Figueiras CC, Pedreguera AZ, Ruiz Espinoza JE (2019) Enhancing the performance and stability of the anaerobic digestion of sewage sludge by zero valent iron nanoparticles dosage. Bioresour Technol 275:352–359. https://doi.org/10.1016/j.biortech.2018.12.086
Lombi E, Donner E, Tavakkoli E, Turney T, Naidu R, Bradley W (2012) Fate of zinc oxide nanoparticles during anaerobic wastewater treatment and in the resulting sewage sludge. Environ Sci Technol 46(16):9089–9096. https://doi.org/10.1021/es301487s
Luna-delRisco M, Orupõld K, Dubourguier HC (2011) Particle-size effect of CuO and ZnO on biogas and methane production during anaerobic digestion. J Hazard Mater 189:603–608. https://doi.org/10.1016/j.jhazmat.2011.02.085
Mu H, Chen Y (2011) Long-term effect of ZnO nanoparticles on waste activated sludge anaerobic digestion. Water Res 45:5612–5620. https://doi.org/10.1016/j.watres.2011.08.022
Mu H, Chen Y, Xiao N (2011) Effects of metal oxide nanoparticles (TiO2, Al2O3, SiO2 and ZnO) on waste activated sludge anaerobic digestion. Bioresour Technol 102:10305–10311. https://doi.org/10.1016/j.biortech.2011.08.100
Mu H, Zheng X, Chen Y, Chen H, Liu K (2012) Response of anaerobic granular sludge to a shock load of zinc oxide nanoparticles during biological wastewater treatment. Environ Sci Technol 46(11):5997–6003. https://doi.org/10.1021/es300616a
Osmond-McLeod M, Oytam Y, Osmond RIW, Sobhanmanesh F, McCall MJ (2014) Surface coatings protect against the in vitro toxicity of zinc oxide nanoparticles in human hepatic stellate cells. J Nanomed Nanotechnol 5:232
Sarker NC, Rahman S, Borhan MS, Rajasekaran P, Santra S, Ozcan A (2019) Nanoparticles in mitigating gaseous emissions from liquid dairy manure stored under anaerobic condition. J Environ Sci 76:26–36. https://doi.org/10.1016/j.jes.2018.03.014
Sinha A, Sinha R, Karan R, Khare SK (2011) Interaction and nanotoxic effect of ZnO and Ag nanoparticles on mesophilic and halophilic bacterial cells. Bioresour Technol 102(2):1516–1520. https://doi.org/10.1016/j.biortech.2010.07.117
Song Y, Chai L, Tang C, Xiao R, Li B, Wu D, Min X (2018) Influence of ZnO nanoparticles on anammox granules: the inhibition kinetics and mechanism analysis by batch assays. Biochem Eng J 133:122–129. https://doi.org/10.1016/j.bej.2018.02.006
Turovskiy IS, Mathai PK (2006) Wastewater sludge processing. John Wiley & Sons
Ünşar EK, Perendeci NA (2018) What kind of effects do Fe2O3 and Al2O3 nanoparticles have on anaerobic digestion, inhibition or enhancement? Chemosphere 211:726–735. https://doi.org/10.1016/j.chemosphere.2018.08.014
van Huyssteen JJ (1967) Gas chromatographic separation of anaerobic digester gases using porous polymers. Water Res 1:237–242. https://doi.org/10.1016/0043-1354(67)90014-0
Veeken A, Kalyuzhnyi S, Scharff H, Hamelers B (2000) Effect of pH and VFA on hydrolysis of organic solid waste. J Environ Eng 126:1076–1081. https://doi.org/10.1061/(asce)0733-9372(2000)126:12(1076)
Vindis P, Mursec B, Janzekovic M, Cus F (2009) The impact of mesophilic and thermophilic anaerobic digestion on biogas production manufacturing and processing manufacturing and processing. J Achiev Mater Manuf Eng 36:192–198
Wahidunnabi AK, Eskicioglu C (2014) High pressure homogenization and two-phased anaerobic digestion for enhanced biogas conversion from municipal waste sludge. Water Res 66:430–446. https://doi.org/10.1016/j.watres.2014.08.045
Wang Y, Westerhoff P, Hristovski KD (2012) Fate and biological effects of silver, titanium dioxide, and C 60 (fullerene) nanomaterials during simulated wastewater treatment processes. J Hazard Mater 201:16–22. https://doi.org/10.1016/j.jhazmat.2011.10.086
Westerhoff P, Song G, Hristovski K, Kiser MA (2011) Occurrence and removal of titanium at full scale wastewater treatment plants: implications for TiO2 nanomaterials. J Environ Monit 13:1195–1203. https://doi.org/10.1039/c1em10017c
Wiench K, Wohlleben W, Hisgen V, Radke K, Salinas E, Zok S, Landsiedel R (2009) Acute and chronic effects of nano- and non-nano-scale TiO2 and ZnO particles on mobility and reproduction of the freshwater invertebrate daphnia magna. Chemosphere 76(10):1356–1365. https://doi.org/10.1016/j.chemosphere.2009.06.025
Yang Y, Zhang C, Hu Z (2013) Impact of metallic and metal oxide nanoparticles on wastewater treatment and anaerobic digestion. Environ Sci Processes Impacts 15(1):39–48. https://doi.org/10.1039/c2em30655g
Yung NMN, Fougeres PA, Leung YH, Liu F, Djurisic AB, Giesy JP, Leung KMY (2017) Physicochemical charateristics and toxicity of surface-modified zinc oxide nanoparticles to freshwater and marine microalgae. Scientific Reports 7(1):15909–15914. https://doi.org/10.1038/s41598-017-15988-0
Zhang Z, Xu J, Shi Z, Cheng Y, Ji Z, Deng R, Jin R (2017a) Short-term impacts of cu, CuO, ZnO and ag nanoparticles (NPs) on anammox sludge: CuNPs make a difference. Bioresour Technol 235:281–291. https://doi.org/10.1016/j.biortech.2017.03.135
Zhang Z, Zhang L, He X, Cang D, Nwe KA, Zheng L, Li Z, Cheng S (2017b) Evaluating the influences of ZnO engineering nanomaterials on VFA accumulation in sludge anaerobic digestion. Biochem Eng J 125:206–211. https://doi.org/10.1016/j.bej.2017.05.008
Zhao L, Ji Y, Sun P, Li R, Xiang F, Wang H, Ruiz-Martineza J, Yang Y (2018) Effects of individual and complex ciprofloxacin, fullerene C60, and ZnO nanoparticles on sludge digestion: methane production, metabolism, and microbial community. Bioresour Technol 267:46–53. https://doi.org/10.1016/j.biortech.2018.07.024
Zheng L, Zhang Z, Zhang L, Tian L, Cheng S, Li Z, Cang D (2019) Mechanistic investigation of toxicological change in ZnO and TiO2 multi-nanomaterial systems during anaerobic digestion and the microorganism response. Biochem Eng J 147:62–71. https://doi.org/10.1016/j.bej.2019.03.017
Zinder SH (1986) Thermophilic waste treatment systems. In: Brock TD (ed) Thermophiles: general molecular and applied biology. Wiley-Interscience, New York, pp 257–277