TY - JOUR
T1 - Compost humic acid-like isolates from composting process as bio-based surfactant
T2 - Properties and feasibility to solubilize hydrocarbon from crude oil contaminated soil
AU - Sari, Gina Lova
AU - Trihadiningrum, Yulinah
AU - Wulandari, Dwiyanti Agustina
AU - Pandebesie, Ellina Sitepu
AU - Warmadewanthi, I. D.A.A.
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/11/1
Y1 - 2018/11/1
N2 - Biodecomposition of organic solid waste during composting process produces compost humic acid-like (cHAL), which is classified as biobased surfactant. The present study aimed to characterize the properties of cHAL substance which was formed during the composting process of crude oil contaminated soil, in terms of surface tension decline (ΔST) and emulsification activity (EA), and evaluate the ability to solubilize hydrocarbons. Crude oil contaminated soil from a public oilfield in Wonocolo Sub-district, Bojonegoro, Indonesia, was composted under aerobic condition with varied biodegradable waste (yard waste and rumen residue) in separate reactors. The cHAL compounds were isolated from composting products from yard waste (Y100), rumen residue (R100), control of contaminated soil (S100), and mixed of contaminated soil and biodegradable waste (S50YR50). The results showed that ΔST of cHAL isolates were ranged from 6.65 to 21.50 mN/m. The EA of cHAL isolates were in the range of 7.35–38.01%. The cHAL isolates were capable to solubilize 99 to 10,710 μg/g of hydrocarbons. The cHAL isolates from R100 and S50YR50 are potential as surface tension reducer and emulsifier for hydrocarbon with values of those isolates were close to 0.50% Tween 80 characteristics, and the abilities to solubilize hydrocarbon were comparable to 1.00% Tween 80. A composition of 50% crude oil contaminated soil and 50% of biodegradable waste (yard waste and rumen residue) is recommended for composting crude oil contaminated soil.
AB - Biodecomposition of organic solid waste during composting process produces compost humic acid-like (cHAL), which is classified as biobased surfactant. The present study aimed to characterize the properties of cHAL substance which was formed during the composting process of crude oil contaminated soil, in terms of surface tension decline (ΔST) and emulsification activity (EA), and evaluate the ability to solubilize hydrocarbons. Crude oil contaminated soil from a public oilfield in Wonocolo Sub-district, Bojonegoro, Indonesia, was composted under aerobic condition with varied biodegradable waste (yard waste and rumen residue) in separate reactors. The cHAL compounds were isolated from composting products from yard waste (Y100), rumen residue (R100), control of contaminated soil (S100), and mixed of contaminated soil and biodegradable waste (S50YR50). The results showed that ΔST of cHAL isolates were ranged from 6.65 to 21.50 mN/m. The EA of cHAL isolates were in the range of 7.35–38.01%. The cHAL isolates were capable to solubilize 99 to 10,710 μg/g of hydrocarbons. The cHAL isolates from R100 and S50YR50 are potential as surface tension reducer and emulsifier for hydrocarbon with values of those isolates were close to 0.50% Tween 80 characteristics, and the abilities to solubilize hydrocarbon were comparable to 1.00% Tween 80. A composition of 50% crude oil contaminated soil and 50% of biodegradable waste (yard waste and rumen residue) is recommended for composting crude oil contaminated soil.
KW - Bio-based surfactant
KW - Compost humic acid-like (cHAL)
KW - Emulsification activity
KW - Hydrocarbon solubilization ability
KW - Surface tension decline
UR - http://www.scopus.com/inward/record.url?scp=85053132660&partnerID=8YFLogxK
U2 - 10.1016/j.jenvman.2018.08.010
DO - 10.1016/j.jenvman.2018.08.010
M3 - Article
C2 - 30119010
AN - SCOPUS:85053132660
SN - 0301-4797
VL - 225
SP - 356
EP - 363
JO - Journal of Environmental Management
JF - Journal of Environmental Management
ER -
