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Compost humic acid-like isolates from composting process as bio-based surfactant: Properties and feasibility to solubilize hydrocarbon from crude oil contaminated soil
Journal of Environmental Management ( IF 8.7 ) Pub Date : 2018-08-06 , DOI: 10.1016/j.jenvman.2018.08.010
Gina Lova Sari , Yulinah Trihadiningrum , Dwiyanti Agustina Wulandari , Ellina Sitepu Pandebesie , I.D.A.A. Warmadewanthi

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.



中文翻译:

堆肥过程中作为生物基表面活性剂的堆肥腐殖酸状分离物:从原油污染土壤中溶解碳氢化合物的性质和可行性

堆肥过程中有机固体废物的生物分解产生堆肥类腐殖酸样(cHAL),被归类为生物基表面活性剂。本研究旨在通过表面张力下降(ΔST)和乳化活性(EA)表征原油污染土壤堆肥过程中形成的cHAL物质的特性,并评估其溶解碳氢化合物的能力。在好氧条件下,将来自印度尼西亚Bojonegoro Wonocolo分区的一个公共油田的原油污染土壤与不同的可生物降解废物(庭院废物和瘤胃残渣)分别堆放在堆中。从堆肥(Y 100),瘤胃残渣(R 100),控制污染土壤(S)的堆肥产品中分离出cHAL化合物100),并混合受污染的土壤和可生物降解的废物(S 50 YR 50)。结果表明,cHAL分离株的ΔST为6.65至21.50 mN / m。cHAL分离株的EA在7.35–38.01%的范围内。cHAL分离物能够溶解99至10,710μg/ g的碳氢化合物。来自R 100和S 50 YR 50的cHAL分离株 具有作为烃的表面张力降低剂和乳化剂的潜力,这些分离物的值接近0.50%Tween 80特性,并且溶解烃的能力可与1.00%Tween 80相媲美。50%原油污染土壤和50%原油组成建议使用可生物降解的废物(庭院废物和瘤胃残渣)堆肥原油污染的土壤。

更新日期:2018-08-06
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