COMMON STOCK	12 Months Ended
Dec. 31, 2018
Equity [Abstract]
COMMON STOCK	COMMON STOCK The total number of authorized shares of the Company’s common stock is 750,000,000 shares, $0.001 par value per share. As of December 31, 2018 and December 31, 2017, there were 40,174,821 and 32,658,176, respectively, shares of common stock issued and outstanding. Each share of the Company's common stock is entitled to equal dividends and distributions per share with respect to the common stock when, as and if declared by the Company's board of directors. No holder of any shares of the Company's common stock has a preemptive right to subscribe for any of the Company's securities, nor are any shares of the Company's common stock subject to redemption or convertible into other securities. Upon liquidation, dissolution or winding-up of the Company and after payment of creditors and preferred shareholders of the Company, if any, the assets of the Company will be divided pro rata on a share-for-share basis among the holders of the Company's common stock. Each share of the Company's common stock is entitled to one vote. Shares of the Company's common stock do not possess any cumulative voting rights. During the year ended December 31, 2018, the Company issued 7,199,774 shares of common stock in connection with the conversion of Series B1, Series B, Series C, and Series A Convertible Preferred Stock, pursuant to the terms of such securities. In addition, the Company issued 150,000 shares of common stock pursuant to the earnout provisions of the Nickco acquisition agreement. Also, the Company issued 241 shares of common stock in connection with the cashless exercise of options. Finally, the Company issued 166,630 shares of common stock in lieu of cash dividends which accrued on the Series B1 Preferred Stock During the year ended December 31, 2017, the Company issued 115,713 shares of common stock in connection with the conversion of Series B1 and Series A Convertible Preferred Stock, pursuant to the terms of such securities. In addition, the Company issued 500,000 shares of common stock in connection with the Nickco acquisition, and the Company received and cancelled 1,108,928 shares of common stock previously held in escrow as part of the escrow fulfillment of the sale of the Vertex Refining NV assets to Safety-Kleen System, Inc.

COMMON STOCK

The total number of authorized shares of the Company’s common stock is 750,000,000 shares, $0.001 par value per share. As of December 31, 2018 and December 31, 2017, there were 40,174,821 and 32,658,176, respectively, shares of common stock issued and outstanding.

Each share of the Company's common stock is entitled to equal dividends and distributions per share with respect to the common stock when, as and if declared by the Company's board of directors. No holder of any shares of the Company's common stock has a preemptive right to subscribe for any of the Company's securities, nor are any shares of the Company's common stock subject to redemption or convertible into other securities. Upon liquidation, dissolution or winding-up of the Company and after payment of creditors and preferred shareholders of the Company, if any, the assets of the Company will be divided pro rata on a share-for-share basis among the holders of the Company's common stock. Each share of the Company's common stock is entitled to one vote. Shares of the Company's common stock do not possess any cumulative voting rights.

During the year ended December 31, 2018, the Company issued 7,199,774 shares of common stock in connection with the conversion of Series B1, Series B, Series C, and Series A Convertible Preferred Stock, pursuant to the terms of such securities. In addition, the Company issued 150,000 shares of common stock pursuant to the earnout provisions of the Nickco acquisition agreement. Also, the Company issued 241 shares of common stock in connection with the cashless exercise of options. Finally, the Company issued 166,630 shares of common stock in lieu of cash dividends which accrued on the Series B1 Preferred Stock

During the year ended December 31, 2017, the Company issued 115,713 shares of common stock in connection with the conversion of Series B1 and Series A Convertible Preferred Stock, pursuant to the terms of such securities. In addition, the Company issued 500,000 shares of common stock in connection with the Nickco acquisition, and the Company received and cancelled 1,108,928 shares of common stock previously held in escrow as part of the escrow fulfillment of the sale of the Vertex Refining NV assets to Safety-Kleen System, Inc.