Aktar Kanij Fatema, Basak Rony, Ara Sabrin, Mahmud Asif
Department of Geography and Environment, Shahjalal University of Science and Technology, Sylhet, Bangladesh.
Department of Civil and Environmental Engineering, Shahjalal University of Science and Technology, Sylhet, Bangladesh.
Heliyon. 2024 Mar 15;10(6):e28032. doi: 10.1016/j.heliyon.2024.e28032. eCollection 2024 Mar 30.
Gas flaring, a common practice in many countries, has been associated with environmental and health concerns. A recent study in Bangladesh's largest gas field, Kailashtilla, assessed the influence of gas flaring on soil quality in the surrounding areas. Physical, chemical, and microbiological characteristics were assessed on soil samples collected from three union zones. Considerable influences have been found on soil quality, with several physical and chemical characteristics failing to meet the standards for healthy plant growth. Heavy metal contamination in the earth's soil was identified, specifically cadmium and lead, having a risk index indicating a moderate risk to the ecosystem in the future. Gas flaring also impacted the amount of bacteria in the soil, with the highest number being found farthest from the flaring zone. The soil was only marginally contaminated and potential health risks found. AAS and digestion methods were used to estimate the content of heavy metal contamination in the soil. To depict the geographically distributed abundance of heavy metals in the study area, the Kriging spatial interpolation procedure was utilized, and PCA and CA were used to assess the condition of soil. Findings indicate that particular gas flaring may have a deleterious influence on soil bacteria, which could have further consequences for the ecosystem. The study is likely to contribute to our understanding of the current state of soil's surrounding gas fields and serve as a platform for future research in this area emphasizing the necessity for sustainable energy methods and the importance of limiting environmental repercussions.
气体燃烧是许多国家的常见做法，它与环境和健康问题相关。最近在孟加拉国最大的气田凯拉什蒂拉进行的一项研究，评估了气体燃烧对周边地区土壤质量的影响。对从三个联合区采集的土壤样本的物理、化学和微生物特性进行了评估。研究发现气体燃烧对土壤质量有相当大的影响，一些物理和化学特性未能达到健康植物生长的标准。确定了土壤中的重金属污染，特别是镉和铅，其风险指数表明未来对生态系统有中度风险。气体燃烧还影响了土壤中的细菌数量，在离燃烧区最远的地方发现的细菌数量最多。土壤仅受到轻微污染，并发现了潜在的健康风险。采用原子吸收光谱法和消解方法来估计土壤中重金属污染的含量。为了描绘研究区域内重金属在地理上的分布丰度，使用了克里金空间插值程序，并采用主成分分析和对应分析来评估土壤状况。研究结果表明，特定的气体燃烧可能对土壤细菌产生有害影响，这可能对生态系统产生进一步的后果。该研究可能有助于我们了解气田周边土壤的现状，并为该领域未来的研究提供一个平台，强调可持续能源方法的必要性以及限制环境影响的重要性。
