The Effect of Adding Probiotic Bacteria on Bauxite Waste Mud : Experimental Research Method

DSpace/Manakin Repository

Show simple item record Hariyani, Susi Wattini Zuraida, Ida Kurniawan, Pramudya Marini, Lely Rianty, Eva 2022-02-08T11:01:32Z 2022-02-08T11:01:32Z 2022-02-08
dc.identifier.issn 2632-945X
dc.description.abstract Bauxite waste sludge is quite dangerous when polluted into the surrounding environment. The number is increasing with the higher mining production. The utilization is still not maximized hence it is unbalanced to the increasing number; and it is necessary to use on a large scale. Sub-grade soil could use a lot of bauxite waste sludge but in reality, this waste is unsafe to use and its characteristics are mud the requirements of bearing capacity according to the AASHTO and USCS Classification unfulfilled. This study aims to determine the effect of the use of probiotic bacteria in bauxite waste on its physical characteristics and pH value. This experimental research method develops test objects according to ASTM standards with the same weight of bauxite waste and variations in the number of probiotic bacteria, namely 25 ml, 50 ml, 75 ml, and 100 ml and the incubation time of bacteria is 7 days, 14 days, 21 days, 28 days, 35 days, and 42 days. The results showed that the test specimens with more bacteria and longer incubation times resulted in lower pH values and physical characteristics that fulfilled the requirements for sub-grade soil. Based on the test results showed that due to the addition of probiotic bacteria, the bauxite sewage sludge increased to class A-4, namely silt with medium quality and a pH close to 8, eliminating the hazardous nature of the waste. en_GB
dc.subject bauxite waste sludge en_GB
dc.subject pH value en_GB
dc.subject physical characteristics en_GB
dc.subject probiotic bacteria en_GB
dc.subject subgrade en_GB
dc.title The Effect of Adding Probiotic Bacteria on Bauxite Waste Mud : Experimental Research Method en_GB

Files in this item

This item appears in the following Collection(s)

Show simple item record


Advanced Search


My Account