UNMUL Hebat, Kaltim Berdaulat, IKN Kuat: Kontribusi Pemikiran Universitas Mulawarman di Usia 60 Tahun (Volume 1)

Abstract

Increasing frequency of flood and un-treatment domestic water waste during pandemic COVID 19 are potential risk factors contamination of pathogen microorganism on the drainage. Water waste treatment had not access in urban and rural areas in East Kalimantan. Kutai soil has high clay content (40.9%-55.9%) and high cation exchange capacity/CEC (16.61-16.95 Meq/100gr). The study would be explored the effective clay Kutai for Escherichia coli/E. Coli reducing. In this research was used Most Probable Number (MPN) was for Escherichia coli/E. Coli diagnosing, with the third stage of the technique is the presumptive test, confirmed test, and completed test on control formula and experimental formulas to add clay Kutai and white cement in the samples. The highest effective formula was clay Kutai with white cement addition, the composition of the formula is 3:1 (7.5 g clay Kutai and 2.5 g white cement. The CEC (Capacity exchange of cations ) 16.95 Meq/100gr and clay content 55.9%, the formula has the high reduction of E. coli, in control 9,2 X 104 E. coli dan 150 E. coli after the experiment, with the degree of effectively 99.82%. Using Clay Kutai with high clay content and high CEC for reducing E. coli in water waste with to adding white cement in the formula have increased bacteria reduction. Clay Kutai has potential for water treatment application consist in rural or urban domestic water waste including for industry and hospital waste water treatment.