Aug 10 (Reuters) - Colombia's Grupo Argos reported a 36% increase in second-quarter net profit on Thursday, as each of the industrial conglomerate's units saw year-over-year growth.

Net profit totaled 313 billion pesos ($77.6 million) in the April-to-June period, up from 229 billion pesos, Argos said in a statement.

Revenue for the company, with units in the energy, cement and airport operation sectors, grew 8% from the year-earlier quarter to 6.39 trillion pesos.

The company's earnings before interest, taxes, depreciation and amortization (EBITDA), or core earnings, grew 12% in the quarter to 1.55 trillion pesos.

Cementos Argos saw revenues grow steadily in the first half of the year, particularly in the United States, where commercial and infrastructure construction demand increased.

Energy subsidiary Celsia also increased profits in the half, Argos said, and expects to close the sale of some Central America assets in the third quarter to strengthen its liquidity position and reduce consolidated debt.

Airport operator Odinsa, meanwhile, moved 12% more passengers year-on-year in the half.

In June, Argos said it would "seriously" focus on finding a strategic partner for its operations once it concludes a share exchange in the country's largest producer of processed foods, Grupo Nutresa.

The share exchange with businesses forming part of Grupo Gilinski, owned by billionaire Jaime Gilinski, could end the magnate's attempts to seize a stake in Argos via a public takeover bid, according to analysts. ($1 = 4,031.65 Colombian pesos) (Reporting by Nelson Bocanegra; writing by Kylie Madry and Valentine Hilaire; editing by Jonathan Oatis)