"This report covers our progress in this area since our last report, issued in early 1983. A Final Technical Report will be transmitted shortly after the expiration date of the contract (September 30, 1984). The objective of this report is to summarize experimental work carried out in our small-scale glass venturi scrubber system on gases containing H2S (plus preliminary work carried out on gas streams containing S02). The effects of various operating parameters on scrubber performance were evaluated. These parameters were: (1) Scrubbing liquid pH and buffer capacity. (2) Liquid-to-gas ratio (L/G ratio). (3) Venturi scrubber throat length. (4) Gas velocity in the scrubber. (5) Effect of CO2 in the gas. Our work clearly showed that the liquid pH and buffer capacity was by far the most important factor in determining SO2 or H2s absorption efficiency."