Oil-polluted Sea Water Purification by Carbonized Rice Hull

Cui Y Li J

doi:10.4172/2375-4397.1000122

Abstract

In recent years, marine oil pollution resulting from exploitation spills and accidents during oil transportation and use has affected the marine ecosystem safety, and oil polluted sea water remediation becomes a global problem. Rice hull possesses a good property of adsorption pollutants and it can be easily obtained from the abundant produce of rice all around the world. This experiment used carbonized rice hull (CRH) as adsorbent, aiming to purify oil polluted sea water and explore optimal adsorption conditions and effects. Six sets of experiments were done under the initial oil concentration of 1.35 mg/L and CRH dosages of 0, 6.67, 13.33, 20, 26.67, 33.33 g/L, separately. Seventy percent of oil was removed under the ideal dosage of 13.33 g/L, getting the minimum oil concentration of 0.39 mg/L. Another six sets of experiments were also done under the adsorption time of 0 h, 1 h, 2 h, 3 h, 4 h, 5 h and the same CRH dosage of 13.33 mg/L. The ideal removals of COD (35.5%) and oil (71%) were obtained after 3 hours adsorption, while the highest COD removal gets to 47.5%.

Highlights

IntroductionOil industry has developed so fast that it has become a crucial part of the world
In the latest decades, oil industry has developed so fast that it has become a crucial part of the world
No obvious oil concentration decrease occurs as the carbonized rice hull (CRH) dosages increase further, the lowest oil concentration is 0.22 mg/L under the experimental conditions

Summary

Introduction

Oil industry has developed so fast that it has become a crucial part of the world. China is the largest developing country and has a huge quantity of oil production and consumption in the world. The problem of oil pollution is even more serious due to the lagging productive conditions and environmental technology and low public awareness of environment protection. Of the harm of marine oil pollution, there is not room to fully speak. It affects the growth of marine life, reduces the use value of coastline areas, damages coastal infrastructure and even destructs the self-purification ability of the ocean, destroying the marine ecosystem [3]

Methods

Results

Conclusion