Dr. Ok is a full professor at and global research director of Korea University in Seoul, Korea. His academic background covers waste management, the bioavailability of emerging contaminants, and bioenergy and value-added products (such as biochar). Professor Ok also has experience in fundamental soil science and the remediation of various contaminants in soils and sediments. Together with graduate students and colleagues, Professor Ok has published over 600 research papers, 70 of which have been ranked as Web of Science ESI top papers (67 nominated as “highly cited papers” [HCPs] and 3 nominated as “hot papers”) since 2009. He has been a Web of Science Highly Cited Researcher (HCR) since 2018. In 2019, he became the first Korean to be selected as an HCR in the field of Environment and Ecology. He maintains a worldwide professional network through his service as an Editor (former Co-Editor in Chief) of the Journal of Hazardous Materials, Editor (former Co-Editor) of the Critical Reviews in Environmental Science and Technology, and Editor of the Environmental Pollution and as a member of the editorial boards of Renewable and Sustainable Energy Reviews, Chemical Engineering Journal, Chemosphere, and Journal of Analytical and Applied Pyrolysis, along with several other top journals. Professor Ok has served in a number of positions worldwide including as honorary professor at the University of Queensland (Australia), visiting professor at Tsinghua University (China), adjunct professor at the University of Wuppertal (Germany), and guest professor at Ghent University (Belgium). He currently serves as Director of the Sustainable Waste Management Program for the Association of Pacific Rim Universities (APRU). He has served as chairman of numerous major conferences such as Engineering Sustainable Development 2019, organized by the APRU and the Institute for Sustainability of the American Institute of Chemical Engineers (AIChE).

Highly Cited Papers (Data from Essential Science Indicators. As of 1st June 2020, these highly cited papers received enough citations to place them in the top of the academic fields of engineering, environment/ ecology, biology and biochemistry, and agricultural science based on a highly cited threshold for the field and publication year)

  1. Ahmad, M., Rajapaksha, A.U., Lim, J.E., Zhang, M., Bolan, N., Mohan, D., Vithanage, M., Lee, S.S. and Ok, Y.S.* (2014). Biochar as a sorbent for contaminant management in soil and water: A review. Chemosphere, 99:19-33 (*Corresponding Author)
  2. Mohan, D., Sarswat, A., Ok, Y.S. and Pittman, C.U. (2014). Organic and inorganic contaminants removal from water with biochar, a renewable, low cost and sustainable adsorbent-A critical review. Bioresource Technology, 160:191-202
  3. Ahmad, M., Lee, S.S., Dou, X., Mohan, D., Sung, J.K., Yang, J.E. and Ok, Y.S.* (2012). Effects of pyrolysis temperature on soybean stover- and peanut shell-derived biochar properties and TCE adsorption in water. Bioresource Technology, 118:536-544 (*Corresponding Author)
  4. Rajapaksha, A.U., Chen, S.S., Tsang, D.C.W., Zhang, M., Vithanage, M., Mandal, S., Gao, B., Bolan, N.S. and 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 (*Corresponding Author)
  5. Inyang, M.I., Gao, B., Yao, Y., Xue, Y., Zimmerman, A., Mosa, A., Pullammanappallil, P., Ok, Y.S. and Cao, X. (2016). A review of biochar as a low-cost adsorbent for aqueous heavy metal removal. Critical Reviews in Environmental Science and Technology, 46(4):406-433
  6. Yang, Y., Ok, Y.S., Kim, K.H., Kwon, E.E., Tsang, Y.F. (2017). Occurrences and removal of pharmaceuticals and personal care products (PCPPs) in drinking water and water/sewage treatment plants: A Review. Science of the Total Environment, 596: 303-320.
  7. Stefaniuk, M., Oleszczuk, P. and Ok, Y.S. (2016). Review on nano zerovalent iron (nZVI): From synthesis to environmental applications. Chemical Engineering Journal, 287:618-632
  8. Park, J.H., Ok, Y.S., Kim, S.H., Cho, J.S., Heo, J.S., Delaune, R.D. and Seo, D.C. (2016) Competitive adsorption of heavy metals onto sesame straw biochar in aqueous solutions. Chemosphere, 142:77-83
  9. Lu, K., Yang, X., Gielen, G., Bolan, N., Ok, Y.S., Niazi, N.K., Xu, S., Yuan, G., Chen, X., Zhang, X., Liu, D., Song, Z., Liu, X. and Wang, H. (2017). Effect of bamboo and rice straw biochars on the mobility and redistribution of heavy metals (Cd, Cu, Pb and Zn) in contaminated soil. Journal of Environmental Management, 186(2):285-292
  10. Antoniadis, V., Levizou, E., Shaheen, S.M., Ok, Y.S., Sebastian, A., Baum, C., Prasad, M.N.V., Wenzel, W.W., Rinklebe, J. (2017). Trace Elements in the soil-plant interface: Phytoavailability, translocation, and phytoremediation-A Review. Earth Science Reviews 171: 621-645.
  11. Rizwan, M., Ali, S., Abbas, T., Zia-ur-Rehman, M., Hannan, F., Keller, C., Al-Wabel, M.I. and Ok, Y.S. (2016). Cadmium minimization in wheat: A critical review. Ecotoxicology and Environmental Safety, 130:43-53
  12. Choppala, G., Saifullah, Bolan, N., Bibi, S., Iqbal, M., Rengel, Z., Kunhikrishnan, A., Ashwath, N. and Ok, Y.S. (2014). Cellular mechanisms in higher plants governing tolerance to cadmium toxicity. Critical Reviews in Plant Sciences, 33:374-391
  13. Abbas, T., Rizwan, M., Ali, S., Zia-ur-Rehman, M., Qayyum, M.F., Abbas, F., Hannan, F., Rinklebe, J. and Ok, Y.S. (2017). Effect of biochar on cadmium bioavailability and uptake in wheat (Triticum aestivum L.) grown in a soil with aged contamination. Ecotoxicology and Environmental Safety, 140:37-47
  14. Rajapaksha, A.U., Vithanage, M., Ahmad, M., Seo, D.C., Cho, J.S., Lee, S.E., Lee, S.S. and Ok, Y.S.* (2015). Enhanced sulfamethazine removal by steam-activated invasive plant-derived biochar. Journal of Hazardous Materials, 290:43-50 (*Corresponding Author)
  15. Rizwan, M., Ali, S., Qayyum, M.F., Ok, Y.S., Adrees, M., Ibrahim, M, Zia-ur-Rehman, M., Farid, M. and Abbas, F. (2017). Effect of metal and metal oxide nanoparticles on growth and physiology of globally important food crops: A critical review. Journal of Hazardous Materials, 322:2-16
  16. Xiong, X., Yu, I.K.M., Cao, L., Tsang, D.C.W., Zhang, S. and Ok, Y.S.* (2017) A review of biochar-based catalysts for chemical synthesis, biofuel production, and pollution control. Bioresource Technology, 246:254-270 (*Corresponding Author)
  17. Rizwan, M., Ali, S., Adrees, M., Ibrahim, M., Tsang, D.C.W., Zia-ur-Rehman, M., Zahir, Z.A., Rinklebe, J., Tack, F.M.G. and Ok, Y.S.* (2017). A critical review on effects, tolerance mechanisms and management of cadmium in vegetables. Chemosphere, 182:90-105 (*Corresponding Author)
  18. Hussain, M., Farooq, M., Nawaz, A., Al-Sadi, A.M., Solaiman, Z.M., Alghamdi, S.S., Ammara, U., Ok, Y.S. and Siddique, K.H.M. (2017) Biochar for crop production: Potential benefits and risks. Journal of Soils and Sediments, 17:685-716
  19. Ali, S., Rizwan, M., Qayyum, M.F., Ok, Y.S., Ibrahim, M., Riaz, M., Arif, M.S., Hafeez, F., Al-Wabel, M.I. and Shahzad, A.N. (2017). Biochar soil amendment on alleviation of drought and salt stress in plants: a critical review. Environmental Science and Pollution Research, 24(14):12700-12712
  20. Beiyuan, J., Awad, Y.M., Beckers, F., Tsang, D.C.W., Ok, Y.S. and Rinklebe, J. (2017) Mobility and phytoavailability of As and Pb in a contaminated soil using pine sawdust biochar under systematic change of redox conditions. Chemosphere, 178:110-118.
  21. Rehman, M.Z., Rizwan, M., Ali, S., Fatima, N., Yousaf, B., Naeem, A., Sabir, M., Ahmad, H.R. and Ok, Y.S. (2016) Contrasting effects of biochar, compost and farm manure on alleviation of nickel toxicity in maize (Zea mays L.) in relation to plant growth, photosynthesis and metal uptake. Ecotoxicology and Environmental Safety, 133:218-225
  22. Yang, X., Wan, Y., Zheng, Y., He, F., Yu, Z., Huang, J., Wang, H., Ok, Y., Jiang, Y. and Gao, B. (2019). Surface functional groups of carbon-based adsorbents and their roles in the removal of heavy metals from aqueous solutions: A critical review. Chemical Engineering Journal, 366:608-621
  23. Sun, Y., Yu, I.K.M., Tsang, D.C.W., Cao, X., Lin, D., Wang, L., Graham, N.J.D., Alessi, D.S., Komarek, M., Ok, Y.S.*, Feng, Y. and Li, X.D. (2019). Multifunctional iron-biochar composites for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater. Environment International, 124:521-532. (*Corresponding Author)
  24. Igalavithana, A.D., Lee, S.E., Lee, Y.H., Tsang, D.C., Rinklebe, J., Kwon, E.E. and Ok, Y.S.* (2017). Heavy metal immobilization and microbial community abundance by vegetable waste and pine cone biochar of agricultural soils. Chemosphere, 174:593-603 (*Corresponding Author)
  25. Fang, J., Zhan, L., Ok, Y.S. and Gao, B. (2017) Minireview of potential applications of    hydrochar derived from hydrothermal carbonization of biomass. Journal of Industrial and Engineering Chemistry, 57: 15-21
  26. Niazi, N.K., Bibi, I., Shahid, M., Ok, Y.S., Burton, E.D., Wang, H.I., Shaheen, S.M., Rinklebe, J., Luttge, A. (2018). Arsenic Removal by Perilla Leaf Biochar in Aqueous Solutions and Groundwater: An Integrated Spectroscopic and Microscopic Examination. Environmental Pollution 232: 31-41.
  27. Chen, S.S., Maneerung, T., Tsang, D.C.W., Ok, Y.S and Wang, C.H. (2017). Valorization of biomass to hydroxymethylfurfural, levulinic acid, and fatty acid methyl ester by heterogeneous catalysts. Chemical Engineering Journal, 328:246-273
  28. Ahmad, M., Ok, Y.S.*, Rajapaksha, A.U., Lim, J.E., Kim, B.Y., Ahn, J.H., Lee, Y.H., Al-Wabel, M.I., Lee, S.E. and Lee, S.S. (2016). Lead and copper immobilization in a shooting range soil using soybean stover- and pine needle-derived biochars: Chemical, microbial and spectroscopic assessments. Journal of Hazardous Materials, 301:179-186 (*Corresponding Author)
  29. Ahmad M., Lee, S.S., Lee, S.E., Al-Wabel, M.I., Tsang, D.C.W. and Ok, Y.S.* (2017) Biochar-induced changes in soil properties affected immobilization/mobilization of metals/metalloids in contaminated soils. Journal of Soils and Sediments, 17:717-730 (*Corresponding Author)
  30. Vikrant, K., Kim, K.H., Ok, Y.S.*, Tsang, D.C.W., Tsang, Y.F., Giri, B.S. and Singh, R.S. (2017) Engineered/designer biochar for the removal of phosphate in water and wastewater. Science of The Total Environment, 616-617:1242-1260 (*Corresponding Author)
  31. Lee, J., Yang, X., Cho, S.H., Kim, J.K., Lee, S.S., Tsang, D.C.W., Ok, Y.S.* and Kwon, E.E. (2017). Pyrolysis process of agricultural waste using CO2 for waste management, energy recovery, and biochar fabrication. Applied Energy, 185:214-222 (*Corresponding Author)
  32. Sarkar, B., Mandal, S., Tsang, Y.F., Kumar, P., Kim, K.H. and Ok, Y.S.* (2018). Designer carbon nanotubes for contaminant removal in water and wastewater: A critical review. Science of the Total Environment, 612:561-581 (*Corresponding Author)
  33. El-Naggar, A’, Lee, S.S., Rinklebe, J., Farooq, M., Song, H., Sarmah, A.K., Zimmerman, A.R., Ahmad, M., Shaheen, S.M. and Ok, Y.S.* (2019). Biochar application to low fertility soils: A review of current status, and future prospects. Geoderma, 337: 536-554. (* Corresponding author)
  34. Rizwan, M., Ali, S., Rehman, M.Z., Rinklebe, J., Tsang, D.C.W., Bashir, A., Maqbool, A., Tack, F. M. G., Ok, Y.S.*. (2018). Cadmium phytoremediation potential of Brassica crop species: A review. 631-632: 1175-1191. Science of The Total Environment (*Corresponding author)
  35. Rajapaksha, A. U., Alam, M.S., Chen N., Alessi D. S., Igalavithana, A.D., Tsang, D.C.W., Ok, Y.S.* (2018) Removal of hexavalent chromium in aqueous solutions using biochar: Chemical and spectroscopic investigations. Science of the Total Environment, 612:103-110 (*Corresponding author)
  36. Wang, L., Cho, D.-W., Tsang, D.C.W., Cao, X., Hou, D., Shen, Z., Alessi, D.S., Ok, Y.S., Poon, C.S. (2019). Green remediation of As and Pb contaminated soil using cement-free clay-based stabilization/solidification. Environment International. 126:336-345
  37. El-Naggar, Ali, Shaheen, S.M., Ok, Y.S.* and Rinklebe, J. (2018). Biochar affects the dissolved and colloidal concentrations of Cd, Cu, Ni, and Zn and their phytoavailability and potential mobility in a mining soil under dynamic redox-conditions. Science of The Total Environment, 624, 1059-1071 (* Corresponding author)
  38. Yoo, J.C., Beiyuan, J., Wang, L., Tsang, D.C.W., Baek, K., Bolan, N.S., Ok, Y.S. and Li, X.D. (2017) A combination of ferric nitrate/EDDS-enhanced washing and sludge-derived biochar stabilization of metal-contaminated soils. Science of The Total Environment, 616-617:572-582
  39. Qin, Y.X., Li, G.Y., Gao, Y.P., Zhang, L.Z., Ok, Y.S., An, T.C. (2018). Persistent free radicals in carbon-based materials on transformation of refractory organic contaminants (rocs) in water: A critical review. Water Research, 137: 130-143
  40. Yu, I.K.M., Xiong, X., Tsang, D.C.W., Wang, L., Hunt, A.J., Song, H., Shang, J., Ok, Y.S. and Poon, C.S. (2018). Aluminium-Biochar Composites as Sustainable Heterogeneous Catalysts for Glucose Isomerisation in a Biorefinery. Green Chemistry, 21:1267-1281
  41. Nie, C.R., Yang, X., Niazi, N.K., Xu, X.Y., Wen, Y.H., Rinklebe, J., Ok, Y.S., Xu, S., Wang, H.L. (2018). Impact of sugarcane bagasse-derived biochar on heavy metal availability and microbial activity: A field study. Chemosphere, 200:274-282.
  42. Niazi, N.K., Bibi, I., Shahid, M., Ok, Y.S., Shaheen, S.M., Rinklebe, J., Wang, H., Murtaza, B., Islam, E., Nawaz, M.F. and Lüttge, A. (2017). Arsenic removal by Japanese oak wood biochar in aqueous solutions and well water: Investigating arsenic fate using integrated spectroscopic and microscopic techniques.  Science of the Total Environment 621:1642-1651
  43. El-Naggar, A., Leed, S.S., Awad, Y.M., Yang, X., Ryu, C., Rizwang, M., Rinklebeh, J., Tsangj, D.C.W., Ok, Y.S.* (2018). Influence of soil properties and feedstocks on biochar potential for carbon mineralization and improvement of infertile soils. Geoderma, 332: 100-108 (*Corresponding author)
  44. Shaheen, S.M., Niazi, N.K., Hassan, N.E., Bibi, I., Wang, H., Tsang, D.C., Ok, Y.S., Bolan, N. and Rinklebe, J., (2018). Wood-based biochar for the removal of potentially toxic elements in water and wastewater: a critical review. International Materials Reviews, 64 (4): 216-247
  45. Cao, L., Yu, I.K.M., Chen, S.S., Tsang, D.C.W., Wang, L., Xiong, X., Zhang, S., Ok, Y.S., Kwon, E.E., Song, H. and Poon, C.S. (2018) Production of 5-hydroxymethylfurfural from starch-rich food waste catalyzed by sulfonated biochar. Bioresource Technology, 252, 76-82.
  46. Rai, P.K., Kumar, V., Lee, S., Raza, N., Kim, K.H., Ok, Y.S. and Tsang, D.C., (2018) Nanoparticle-plant interaction: Implications in energy, environment, and agriculture. Environment international, 119, 1-19
  47. Rai, P.K., Lee, J., Kailasa, S.K., Kwon, E.E., Tsang, Y.F., Ok, Y.S. and Kim, K.H. (2018) A critical review of ferrate (VI)-based remediation of soil and groundwater. Environmental Research, 160, 420-448
  48. O’Connor, D., Hou, D., Ok, Y. S., Song, Y.N., Sarmah, A.K., Li, X.R., Tack, F.M.G. (2018). Sustainable in situ remediation of recalcitrant organic pollutants in groundwater with controlled release materials: A review. Journal of Controlled Release, 283:200-213
  49. Jin, Y., O'Connor, D., Ok, Y.S., Tsang, D.C.W., Liu, A. and Hou, D. (2019). Assessment of sources of heavy metals in soil and dust at children's playgrounds in Beijing using GIS and multivariate statistical analysis. Environment International. 124: 320-328.
  50. Zou, W., Gao, B., Ok, Y.S. and Dong, L. (2019). Integrated adsorption and photocatalytic degradation of volatile organic compounds (VOCs) using carbon-based nanocomposites: A critical review. Chemosphere. 218. 845-859.
  51. Xia, S., Song, Z., Jeyakumar, P., Shaheen, S.M., Rinklebe, J., Ok, Y.S., Bolan, N. and Wang, H. (2019). A critical review on bioremediation technologies for Cr (VI)-contaminated soils and wastewater. Critical Reviews in Environmental Science and Technology, 49(12): 1027-1078
  52. Wang, S., Zhao, M., Zhou, M., Li, Y.C., Wang, J., Gao, B., Feng, K., Igalavithana, I.D., Oleszczuk, P., Wang, X., Ok, Y.S.* (2019). Biochar-Supported nZVI (nZVI/BC) for Contaminant Removal from Soil and Water: A Critical Review. Journal of Hazardous Materials, 373: 820-834 (*Corresponding author).
  53. O’Connor, D., Hou, D., Ok, Y.S., Mulder, J., Duan, L., Wu, Q., Wang, S., Tack, F.M.G., Rinklebe, J. (2019). Mercury speciation, transformation and transportation in soils, atmospheric flux, and implications for risk management: A critical review, Environment International, 126:747-761
  54. Yang, F.Zhang, S., Sun, Y., Tsang, D.C.W., Cheng, K. and Ok, Y.S. (2019). Assembling biochar with various layered double hydroxides for enhancement of phosphorus recovery. Journal of Hazardous Materials. 365: 665-673
  55. Cao, L. Yu, I.K.M., Cho, D-W., Tsang, D.C.W., Zhang, S., Ding, S., Wang, L., Ok, Y.S. (2019). Microwave-assisted low-temperature hydrothermal treatment of red seaweed (Gracilaria lemaneiformis) for production of levulinic acid and algae hydrochar. Bioresource Technology. 273: 251-258.
  56. Shen, Z., Zhang, J., Hou, D., Tsang, D.C.W., Ok, Y.S., Alessi, D.S. (2019). Synthesis of MgO-coated corncob biochar and its application in lead stabilization in a soil washing residue. Environment International, 122:357-362
  57. Antoniadis, V., Shaheen, S.M., Levizou, E., Shahid, M., Niazi, N.K., Vithanage, M., Ok, Y.S., Bolan, N., Rinklebe, J. (2019). A critical prospective analysis of the potential toxicity of trace element regulation limits in soils worldwide: are they protective concerning health risk assessment? - a review. Environment International. 127:819-847
  58. Khan, A., Szulejko, J.E., Kim, K.H., Sammadar, P., Lee, S.S., Yang, X.X. and Ok, Y.S. (2019) A comparison of figure of merit (FOM) for various materials in adsorptive removal of benzene under ambient temperature and pressure. Environmental Research, 168: 96-108.
  59. Palansooriya, K.N., Ok, Y.S., Awad, Y.M., Lee, S.S., Sung, J-K., Koutsospyros, A. and Moon D.H. (2019). Impacts of biochar application on upland agriculture: A review. Journal of Environmental Management, 234: 52-64
  60. Khan, A., Szulejko, J.E., Samaddar, P., Kim, K-H., Liu, B., Maitlo, H.A., Yang, X. and Ok, Y.S.* (2019). The potential of biochar as sorptive media for removal of hazardous benzene in air. Chemical Engineering Journal, 361: 1576–1585 (*Corresponding Author)
  61. Zhang, Y.H., Hou, D., O’Connor, D., Shen, Z.T., Shi, P.L., Ok, Y.S., Tsng, D.C.W., Wen, Y., Luo, M.N. (2019) Lead contamination in Chinese surface soils: Source identification, spatial-temporal distribution and associated health risks. Critical Reviews in Environmental Science and Technoology, 49 (15): 1386-1423
  62. Deng, Y., Ok, Y.S., Mohan, D., Pittman, C.U. and Dou, X. (2019). Carbamazepine removal from water by carbon dot-modified magnetic carbon nanotubes. Environmental Research, 169: 434-444.
  63. Premarathna, K.S.D., Rajapaksha, A.U., Adassoriya, N., Sarkar, B., Sirimuthu, N.M.S., Cooray, A., Ok, Y.S., Vithanage, M. (2019). Clay-biochar composites for sorptive removal of tetracycline antibiotic in aqueous media. Journal of Environmental Management, 238: 315-322.
  64. Seneviratne, M., Rajakaruna, N., Rizwan, M., Madawala, H.M.S.P., Ok, Y.S.* and Vithanage M. (2017). Heavy metal-induced oxidative stress on seed germination and seedling development: a critical review. Environmental Geochemistry and Health, 41:1813-1831 (*Corresponding author)
  65. Ahmad, M., Ahmad, M., Usman, A.R.A., Al-Faraj, A.S., Abduljabbar, A., Ok, Y.S. and Al-Wabel, M.I. (2017). Date palm waste-derived biochar composites with silica and zeolite: synthesis, characterization and implication for carbon stability and recalcitrant potential. Environmental Geochemistry and Health, 41:1687-1704
  66. Shakoor, M.B., Niazi, N.K., Bibi, I., Shahid, M., Saqib, Z.A., Nawaz, M.F., Shaheen, S.M., Wang, H., Tsang, D.C.W., Bundschuh, J., Ok, Y.S. and Rinklebe, J. (2019). Exploring the arsenic removal potential of various biosorbents from water. Environment International. 123:567-579.
  67. El-Naggar, A., Shaheen, S.M., Hseu Z.Y., Wang, S., Ok, Y.S.* and Rinklebe, J. (2019). Release dynamics of As, Co, and Mo in a biochar treated soil under pre-definite redox conditions. Science of the Total Environment 657: 686–695. (*Corresponding Author)

Hot papers (Data from Essential Science Indicators. These hot papers were published in the last year and received enough citations in 1st June 2020 to place it in the top 0.1% of papers in the academic fields of Environment/Ecology and Engineering)

  1. Yang, X., Wan, Y., Zheng, Y., He, F., Yu, Z., Huang, J., Wang, H., Ok, Y., Jiang, Y., Gao, B. (2019). Surface functional groups of carbon-based adsorbents and their roles in the removal of heavy metals from aqueous solutions: A critical review. Chemical Engineering Journal, 366:608-621
  2. Sun, Y., Yu, I.K.M., Tsang, D.C.W., Cao, X., Lin, D., Wang, L., Graham, N.J.D., Alessi, D.S., Komarek, M., Ok, Y.S.*, Feng, Y. and Li, X.D. (2019). Multifunctional iron-biochar composites for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater. Environment International. 124:521-532. (*Corresponding Author)
  3. El-Naggar, A’, Lee, S.S., Rinklebe, J., Farooq, M., Song, H., Sarmah, A.K., Zimmerman, A.R., Ahmad, M., Shaheen, S.M. and Ok, Y.S.* (2019) Biochar application to low fertility soils: A review of current status, and future prospects. Geoderma, 337: 536-554. (*Corresponding author).