An laboratory-scale experimental study has been performed to evaluate the physicochemical characterization and exhaust gas emissions of algal oil methyl ester blends (biodiesel + diesel) and pure diesel fuel on a single cylinder, VCR diesel engine at varying load (0, 3, 6, 9 and 12 Kg) and CRs (13, 14, 15, 16 and 17) conditions. The algal oil obtained was transesterified using previously reported efficient catalyst potassium impregnated zinc oxide 60 K/ZnO-900 and methanol to synthesize methyl esters (AOMEs). Different AOMEs blends such as AB5, AB10, AB15, AB20, AB25, AB30, and AB50 were prepared with diesel fuel on the volume basis. All blended fuels were tested for important physicochemical properties such as density, calorific value, flash point and fire point as per ASTM standards and these blended fuels showed the comparable results within the test limit. Furthermore, exhaust emission analysis of HC, NOx, CO, CO₂ and O₂ gases of the prepared blends were performed and results were compared with baseline diesel fuel. Results showed that the AB30 blend exhibited the minimum exhaust emissions of pollutant gases. It reduces the emission of HC and CO gases up to 35.13 and 30%, respectively with an increase in NOx up to 25–30% due to presence of unsaturation moiety. The increased emissions of CO₂ and O₂ gases up to 9–20% and 8–20% were also observed due to oxygen content present in the blended fuel. In general trend, improved exhaust emissions were observed for AB30 at optimum parameter of 9 Kg load and CR 16 conditions that closely followed the standard diesel.

已经进行了实验室规模的实验研究，以评估单缸VCR柴油机在变化的负载（0、3、6）下的藻油甲酯混合物（生物柴油+柴油）和纯柴油的理化特性和废气排放。 ，9和12 Kg）和CRs（13、14、15、16和17）条件。使用先前报道的高效催化剂钾浸渍的氧化锌60 K / ZnO-900和甲醇将获得的藻油进行酯交换，以合成甲酯（AOMEs）。用柴油按体积计制备了不同的AOMEs混合物，例如AB5，AB10，AB15，AB20，AB25，AB30和AB50。对所有混合燃料进行了重要的理化性质测试，例如密度，热值，闪点和着火点符合ASTM标准，这些混合燃料在测试极限内显示出可比的结果。此外，HC，NOx，CO，CO的废气排放分析进行了所制备的混合物的₂和O ₂气体，并将结果与​​基准柴油进行了比较。结果表明，AB30共混物表现出最小的污染物排放。由于不饱和部分的存在，它可以将HC和CO气体的排放量分别减少多达35.13和30％，同时将NOx的排放增加多达25–30％。由于混合燃料中存在的氧气含量，还观察到CO ₂和O ₂气体排放量分别增加了9–20％和8–20％。总的趋势是，在最佳参数9 Kg和紧随标准柴油的CR 16条件下，AB30的废气排放得到改善。