Research Roadmap Of Bioremediation: Review Of In Situ Method On Land Bioremediation

The existence of a study that can map various existing research topics with the intention of providing information to researchers about the research gap in order to determine the position of research is needed. This study was conducted by analyzing the theme of 250 bioremediation scopus indexed international journals from 1980s until 2015 to obtain the distribution of research, trending topic, hot topic, and potential topics in the future. The distribution of research is grouped based on bioremediation objectives, type of pollutants, type of research, aspects of study and bioremediation techniques used. The results showed that 84.5% of the bioremediation researchs were land bioremediation and 34% were heavy metal bioremediation. Those studies are still dominated by laboratory research (75.9%), mainly microbial aspects (59%) and 82.9% using bioreactor as bioremediation techniques in the laboratory. In situ research still had a small portion (12.9%). The trending topic of the last ten years was the land bioremediation with hydrocarbons contamination and the hot topic was the land bioremediation with heavy metal contamination. Bioremediation of polluted groundwater by in situ various pollutants will become a potential topic in the future.