Cui, X., Hao, H., Zhang, C., He, Z., Yang, X. (2016). Capacity and mechanisms of ammonium and cadmium sorption on different wetland-plant derived biochars. Science of the total environment, 539, 566-75.
 Yang, P., Guo, D., Chen, Z., Cui, B., Xiao, B., Liu, S. (2017). Removal of Cr (VI) from aqueous solution using magnetic biochar synthesized by a single-step method. Journal of dispersion science and technology, 38(11), 1665-–74.
 Ismail, Z. Z., Hameed, B. B. (2014). A new application of giant reed waste material for ammonium removal. International journal of environmental studies, 71(2), 122-138.
 Zhang, M., Wang, Z., Xu, J., Liu, Y., Ni, L., Cao, T., Xie, P. (2011). Ammonium, microcystins, and hypoxia of blooms in eutrophic water cause oxidative stress and C–N imbalance in submersed and floating-leaved aquatic plants in Lake Taihu, China. Chemosphere, 82(3), 329-339.
 Richardson, S. D., DeMarini, D. M., Kogevinas, M., Fernandez, P., Marco, E., Lourencetti, C., Villanueva, C. M. (2010). What’s in the pool? A comprehensive identification of disinfection by-products and assessment of mutagenicity of chlorinated and brominated swimming pool water. Environmental health perspectives, 118(11), 1523-1530.
 Hafizur, R. M., Nuralam, H. M., Rumainul, I. M. (2017). Investigation of physicochemical parameter, heavy metal in Turag river water and adjacent industrial effluent in Bangladesh. Journal of science, technology and environment informatics, 5(1), 347-360.
 Bhatnagar, A., Kumar, E., Sillanpää, M. (2010). Nitrate removal from water by nano-alumina: Characterization and sorption studies. Chemical engineering journal, 163(3), 317-323.
 Ding, W. C., Zeng, X. L., Hu, X. B., Deng, Y., Hossain, M. N., Chen, L. (2018). Characterization of dissolved organic matter in mature leachate during ammonia stripping and two-stage aged-refuse bioreactor treatment. Journal of environmental engineering, 144(1), 04017082.
 Moradzadeh, M., Moazed, H., Sayyad, G., Khaledian, M. (2014). Transport of nitrate and ammonium ions in a sandy loam soil treated with potassium zeolite–evaluating equilibrium and non-equilibrium equations. Acta ecologica sinica, 34(6), 342-350.
 Samatya, S., Kabay, N., Yüksel, Ü., Arda, M., Yüksel, M. (2006). Removal of nitrate from aqueous solution by nitrate selective ion exchange resins. Reactive and functional polymers, 66(11), 1206-1214.
 Hu, Q., Chen, N., Feng, C., Hu, W. (2015). Nitrate adsorption from aqueous solution using granular chitosan-Fe3+ complex. Applied surface science, 347, 1-9.
 Schoeman, J. J., Steyn, A. (2003). Nitrate removal with reverse osmosis in a rural area in South Africa. Desalination, 155(1), 15-26.
 Ahmad, M., Ahmad, M., Usman, A. R., Al-Faraj, A. S., Abduljabbar, A. S., Al-Wabel, M. I. (2018). Biochar composites with nano zerovalent iron and eggshell powder for nitrate removal from aqueous solution with coexisting chloride ions. Environmental science and pollution research, 25(26), 25757-25771.
 Adeleye, A. S., Conway, J. R., Garner, K., Huang, Y., Su, Y., Keller, A. A. (2016). Engineered nanomaterials for water treatment and remediation: Costs, benefits, and applicability. Chemical engineering journal, 286, 640-662.
 Tyagi, S., Rawtani, D., Khatri, N., Tharmavaram, M. (2018). Strategies for nitrate removal from aqueous environment using nanotechnology: a review. Journal of water process engineering, 21, 84-95.
 Zhang, H., Xiao, R., Huang, H., Xiao, G. (2009). Comparison of non-catalytic and catalytic fast pyrolysis of corncob in a fluidized bed reactor. Bioresource technology, 100(3), 1428-1434.
 Saltalı, K., Sarı, A., & Aydın, M. (2007). Removal of ammonium ion from aqueous solution by natural Turkish (Yıldızeli) zeolite for environmental quality. Journal of hazardous materials, 141(1), 258-263.
 Halim, A. A., Latif, M. T., Ithnin, A. (2013). Ammonia removal from aqueous solution using organic acid modified activated carbon. World applied sciences journal, 24(1), 1-6.
 Long, X. L., Cheng, H., Xin, Z. L., Xiao, W. D., Li, W., Yuan, W. K. (2008). Adsorption of ammonia on activated carbon from aqueous solutions. Environmental progress, 27(2), 225-233.
 Zhao, Y., Yang, Y., Yang, S., Wang, Q., Feng, C., & Zhang, Z. (2013). Adsorption of high ammonium nitrogen from wastewater using a novel ceramic adsorbent and the evaluation of the ammonium-adsorbed-ceramic as fertilizer. Journal of colloid and interface science, 393, 264-270.
 Sharifnia, S., Khadivi, M. A., Shojaeimehr, T., Shavisi, Y. (2016). Characterization, isotherm and kinetic studies for ammonium ion adsorption by light expanded clay aggregate (LECA). Journal of saudi chemical society, 20, S342-S351.
 Tian, J., Miller, V., Chiu, P. C., Maresca, J. A., Guo, M., Imhoff, P. T. (2016). Nutrient release and ammonium sorption by poultry litter and wood biochars in stormwater treatment. Science of the total environment, 553, 596-606.
 Kizito, S., Wu, S., Kirui, W. K., Lei, M., Lu, Q., Bah, H., Dong, R. (2015). Evaluation of slow pyrolyzed wood and rice husks biochar for adsorption of ammonium nitrogen from piggery manure anaerobic digestate slurry. Science of the total environment, 505, 102-112.
 Yang, H. I., Lou, K., Rajapaksha, A. U., Ok, Y. S., Anyia, A. O., Chang, S. X. (2018). Adsorption of ammonium in aqueous solutions by pine sawdust and wheat straw biochars. Environmental science and pollution research, 25(26), 25638-25647.
 Li, B., Yang, L., Wang, C. Q., Zhang, Q. P., Liu, Q. C., Li, Y. D., Xiao, R. (2017). Adsorption of Cd (II) from aqueous solutions by rape straw biochar derived from different modification processes. Chemosphere, 175, 332-340.
 Tong, X. J., Li, J. Y., Yuan, J. H., Xu, R. K., Zhou, L. X. (2012). Adsorption of Cu (II) on rice straw char from acidic aqueous solutions. Environmental. chemistry, 31(1), 64-68.
 Yargicoglu, E. N., Sadasivam, B. Y., Reddy, K. R., Spokas, K. (2015). Physical and chemical characterization of waste wood derived biochars. Waste management, 6, 256-268.
 Cao, X., Ma, L., Gao, B., Harris, W. (2009). Dairy-manure derived biochar effectively sorbs lead and atrazine. Environmental science and technology, 43(9), 3285-3291.
 Ahmad, M., Upamali, A., Eun, J., Zhang, M., Bolan, N. (2014). Biochar as a sorbent for contaminant management in soil and water: A review. Chemosphere, 99, 19-33.
 Tan, X., Liu, Y., Zeng, G., Wang, X., Hu, X., Gu, Y. (2015). Application of biochar for the removal of pollutants from aqueous solutions. Chemosphere, 125(10), 70-85.
 Takaya, C.A., Fletcher, L.A, Singh, S., Anyikude, K.U, Ross, A.B. (2016). Phosphate and ammonium sorption capacity of biochar and hydrochar from different wastes. Chemosphere, 145, 518-27.
 Zeng, Z., Zhang, S. D., Li, T. Q., Zhao, F. L., He, Z. L., Zhao, H. P., Rafiq, M. T. (2013). Sorption of ammonium and phosphate from aqueous solution by biochar derived from phytoremediation plants. Journal of Zhejiang university science B, 14(12), 1152-1161.
 Hale, S.E., Alling, V., Martinsen, V., Mulder, J., Breedveld, G.D., Cornelissen, G. (2013). The sorption and desorption of Phosphate-P, Ammonium-N and Nitrate-N in cacao shell and corn cob biochars. Chemosphere, 91(11), 1612–9.
 Yao, Y., Gao, B., Chen, J., Yang, L. (2013). Engineered biochar reclaiming phosphate from aqueous solutions: mechanisms and potential application as a slow-release fertilizer. Environmental science and technology, 47(15), 8700-8708.
 Fornes, F., Belda, R. M., Lidón, A. (2015). Analysis of two biochars and one hydrochar from different feedstock: focus set on environmental, nutritional and horticultural considerations. Journal of cleaner production, 86, 40-48.
 Xiang, J., Liu, D., Ding, W., Yuan, J., Lin, Y. (2015). Effects of biochar on nitrous oxide and nitric oxide emissions from paddy field during the wheat growth season. Journal of cleaner production, 104, 52-58.
 Lou, K., Rajapaksha, A. U., Ok, Y. S., Chang, S. X. (2016). Pyrolysis temperature and steam activation effects on sorption of phosphate on pine sawdust biochars in aqueous solutions. Chemical speciation and bioavailability, 28(1-4), 42-50.
 Rajapaksha, A. U., Chen, S. S., Tsang, D. C., Zhang, M., Vithanage, M., Mandal, S., Ok, Y. S. (2016). Engineered/designer biochar for contaminant removal/immobilization from soil and water: potential and implication of biochar modification. Chemosphere, 148, 276-291.
 Mittal, A., Mittal, J., Malviya, A., Kaur, D., Gupta, V. K. (2010). Adsorption of hazardous dye crystal violet from wastewater by waste materials. Journal of colloid and interface science, 343(2), 463-473.
 Foo, K. Y., Hameed, B. H. (2010). Insights into the modeling of adsorption isotherm systems. Chemical engineering journal, 156(1), 2-10.
 Chen, X., Chen, G., Chen, L., Chen, Y., Lehmann, J., McBride, M. B., Hay, A. G. (2011). Adsorption of copper and zinc by biochars produced from pyrolysis of hardwood and corn straw in aqueous solution. Bioresource technology, 102(19), 8877-8884.
 Silber, A., Levkovitch, I., Graber, E. R. (2010). pH-dependent mineral release and surface properties of cornstraw biochar: agronomic implications. Environmental science and technology, 44(24), 9318-9323.
 Chun, Y., Sheng, G., Chiou, C. T., Xing, B. (2004). Compositions and sorptive properties of crop residue-derived chars. Environmental science and technology, 38(17), 4649-4655.
 Harvey, O. R., Herbert, B. E., Kuo, L. J., Louchouarn, P. (2012). Generalized two-dimensional perturbation correlation infrared spectroscopy reveals mechanisms for the development of surface charge and recalcitrance in plant-derived biochars. Environmental science and technology, 46(19), 10641-10650.
 Spokas, K. A. (2010). Review of the stability of biochar in soils: predictability of O: C molar ratios. Carbon management, 1(2), 289-303.
 Thangalazhy-Gopakumar, S., Adhikari, S., Ravindran, H., Gupta, R. B., Fasina, O., Tu, M., Fernando, S. D. (2010). Physiochemical properties of bio-oil produced at various temperatures from pine wood using an auger reactor. Bioresource technology, 101(21), 8389-8395.
 Williams, P. T., Nugranad, N. (2000). Comparison of products from the pyrolysis and catalytic pyrolysis of rice husks. Energy, 25(6), 493-513.
 Shabangu, S., Woolf, D., Fisher, E. M., Angenent, L. T., Lehmann, J. (2014). Techno-economic assessment of biomass slow pyrolysis into different biochar and methanol concepts. Fuel, 117, 742-748.
 Aysu, T., Küçük, M.M. (2014). Biomass pyrolysis in a fixed-bed reactor: Effects of pyrolysis parameters on product yields and characterization of products. Energy, 64, 1002–25.
 Méndez, A., Tarquis, A.M., Saa-Requejo, A., Guerrero, F., Gascó, G. (2013). Influence of pyrolysis temperature on composted sewage sludge biochar priming effect in a loamy soil. Chemosphere, 93(4), 668–76.
 Yuan, H., Lu, T., Wang, Y., Huang, H., Chen, Y. (2014). Influence of pyrolysis temperature and holding time on properties of biochar derived from medicinal herb (radix isatidis) residue and its effect on soil CO2 emission. Journal of analytical and applied pyrolysis, 110, 277-284.
 Li, M., Huang, H., Yu, S., Tian, N., Dong, F., Du, X., Zhang, Y. (2016). Simultaneously promoting charge separation and photoabsorption of BiOX (X= Cl, Br) for efficient visible-light photocatalysis and photosensitization by compositing low-cost biochar. Applied surface science, 386, 285-295.
 Gai, X., Wang, H., Liu, J., Zhai, L., Liu, S., Ren, T., Liu, H. (2014). Effects of feedstock and pyrolysis temperature on biochar adsorption of ammonium and nitrate. PloS one, 9(12), e113888.
 Crombie, K., Mašek, O. (2014). Investigating the potential for a self-sustaining slow pyrolysis system under varying operating conditions. Bioresource technology, 162, 148-156.
 Song, W., Guo, M. (2012). Quality variations of poultry litter biochar generated at different pyrolysis temperatures. Journal of analytical and applied pyrolysis, 94, 138-145.
 Sica, M., Duta, A., Teodosiu. C., Draghici, C. (2014). Thermodynamic and kinetic study on ammonium removal from a synthetic water solution using ion exchange resin. Clean technologies environmental policy, 16(2), 351–359.
 Huang, H., Xiao, X., Yan, B., Yang, L. (2010). Ammonium removal from aqueous solutions by using natural Chinese (Chende) zeolite as adsorbent. Journal of hazardous materials, 175(1-3), 247-252.
 Kong, Y., Wang, Z.L., Wang, Y., Yuan, J., Chen, Z.D. (2011). Degradation of methyl orange in artificial wastewater through electrochemical oxidation using exfoliated graphite electrode. Xinxing tan cailiao/new carbon mater, 26(6), 459-64.
 Zhu, K., Fu, H., Zhang, J., Lv, X., Tang, J., Xu, X. (2012). Studies on removing NH4+-N from aqueous solution by using the activated carbons derived from rice husk. Biomass and bioenergy, 43, 18-25.
 Kučić, D., Ćosić, I., Vuković, M., Briški, F. (2013). Sorption kinetic studies of ammonium from aqueous solution on different inorganic and organic media. Acta chimica slovenica, 60(1), 109-119.
 Baocheng, Q. U., Jiti, Z. H. O. U., Xiang, X., Zheng, C., Hongxia, Z. H. A. O., Xiaobai, Z. H. O. U. (2008). Adsorption behavior of Azo Dye CI Acid Red 14 in aqueous solution on surface soils. Journal of environmental sciences, 20(6), 704-709.
 Wang, B., Lehmann, J., Hanley, K., Hestrin, R., Enders, A. (2015). Adsorption and desorption of ammonium by maple wood biochar as a function of oxidation and pH. Chemosphere, 138, 120-6.
 Liu, N., Sun, Z. T., Wu, Z. C., Zhan, X. M., Zhang, K., Zhao, E. F., Han, X. R. (2013). Adsorption characteristics of ammonium nitrogen by biochar from diverse origins in water. In advanced materials research 664, 305-312.
 Hou, J., Huang, L., Yang, Z., Zhao, Y., Deng, C., Chen, Y., Li, X. (2016). Adsorption of ammonium on biochar prepared from giant reed. Environmental science and pollution research, 23(19), 19107-19115.
 Wahab, M. A., Jellali, S., Jedidi, N. (2010). Ammonium biosorption onto sawdust: FTIR analysis, kinetics and adsorption isotherms modeling. Bioresource technology, 101(14), 5070-5075.
 Jellali, S., Wahab, M.A., Anane, M., Riahi, K., Jedidi, N. (2010). Biosorption characteristics of ammonium from aqueous solutions onto Posidonia oceanica (L.) fibres. Desalination, 270(1–3), 40-9.
 Wang, M., Liao, L., Zhang, X., Li, Z., Xia, Z., Cao, W. (2011). Adsorption of low-concentration ammonium onto vermiculite from Hebei province, China. Clays clay miner, 59(5), 459-65.
 Cui, X., Hao, H., Zhang, C., He, Z., Yang, X. (2016). Capacity and mechanisms of ammonium and cadmium sorption on different wetland-plant derived biochars. Science of the total environment, 539, 566-575.
 Abdolali, A., Guo, W. S., Ngo, H. H., Chen, S. S., Nguyen, N. C., Tung, K. L. (2014). Typical lignocellulosic wastes and by-products for biosorption process in water and wastewater treatment: a critical review. Bioresource technology, 160, 57-66.