Technology Reports of Kansai University (ISSN: 04532198) is a monthly peer-reviewed and open-access international Journal. It was first built in 1959 and officially in 1975 till now by kansai university, japan. The journal covers all sort of engineering topic, mathematics and physics. Technology Reports of Kansai University (TRKU) was closed access journal until 2017. After that TRKU became open access journal. TRKU is a scopus indexed journal and directly run by faculty of engineering, kansai university.
Technology Reports of Kansai University (ISSN: 04532198) is a peer-reviewed journal. The journal covers all sort of engineering topic as well as mathematics and physics. the journal's scopes are
in the following fields but not limited to:
Zhonghua er bi yan hou tou jing wai ke za zhi = Chinese journal of otorhinolaryngology head and neck surgery
Interventional Pulmonology (middletown, de.)
Biodiesel is one of the best choices for fuel alternatives. This is mainly due to its lower production value as it can easily be procured from cheap natural sources. It also has low emission of pollutant. However, some issues in regard to the production of biodiesel is that most production processes use homogeneous catalyst which is irretrievable and has expensive separation procedures. There is a method conducted to negates the outcomes stated above such as transesterification in supercritical conditions. But this method of transesterification also has its downside, high temperature and pressure processes indirectly will lead to higher cost and higher energy wastage. Therefore presently, using heterogeneous catalyst are the way to go, especially catalyst derived from green resources. These types of catalyst are being extensively researched on due to its versatility, wide range of resources and promising results. Thus, this paper illustrates the compressive studies of biodiesel synthesis and assesses the latest achievement involved in heterogeneous catalyst derived from waste specifically waste from animal sources. Experimental data from great number of papers are reviewed thoroughly to provide an easier framework in producing biodiesel. Most importantly this review aims to diminish problems associated with heterogeneous catalyst while helping the industry to sustain the environment while still meeting energy demands.
The Bengawan Solo River is the largest river on the island of Java and flows water from the river basin area (DPS) covering an area of ± 16,100 km2 starting from the Sewu Mountains in the west-south of Surakarta to the Java Sea north of Surabaya through a ± 600 km long channel. Wonogiri Reservoir as a reservoir in the upstream area of the Bengawan Solo River with a watershed (DAS) covering an area of 1350 km2 is still operating well since 1981 as a flood control raw water supply hydroelectric power river maintenance tourism and fisheries. With a river maintenance discharge from the reservoir of 2 m3/s the amount of river pollution load in the downstream area is still quite large with the highest amount of pollutant load found in the Kajangan segmentt in September 2019 with a BOD of 103 mg / L and COD of 441.7 mg / L.-133.254.59 kg / day for BOD parameters and -555.039.07 kg / day for COD parameters. After simulating the addition of discharge to the upstream different results are obtained. The most optimal dilution discharge was found to reduce the pollution load in the downstream area to comply with class II water quality standards with the lowest discharge of 23 m3 / s for April 2019 and the highest discharge of > 150 m3 / s for September 2019 to December 2019. Efforts to rely on the addition of upstream river discharge as a diluent to reduce pollutant loads in the downstream need to pay attention to the quality of water contained in the water discharge. If the water quality at the discharge used as a diluent is not too good it will not have a big effect in reducing the pollution load