Biodiesel Production from the Lipid of Wastewater Sludge Using an Acidic Heterogeneous Catalyst

Abstract

The production of biodiesel from the lipid of wastewater sludge was studied using SBA-15 impregnated with the heteropolyacid H 3 PO 4 ·12WO 3 ·xH 2 O (PW 12 ) as a mesoporous heterogeneous catalyst. X-ray diffraction, Brunauer-Emmett-Teller surface area, thermalgravimetric analysis, and scanning electron microscopy were applied to characterize the prepared catalysts. Catalytic performances were evaluated in a microreactor setup under different experimental conditions. The biodiesel yield for a sample impregnated with 15 % PW 12 was 30.14 wt-% at a temperature of 135°C and a pressure of 135 psi for 3 h reaction time.

Using Coal Fly Ash and Wastewater for Microwave Synthesis of LTA Zeolite

“…The abundance of amorphous aluminosilicate in fly ash as a by‐product of coal‐fired power stations makes it an important source material for synthetic zeolites. Zeolitic aluminosilicates are valuable inorganic porous materials that can be synthesized by various techniques and serve for a wide range of diverse applications as adsorbent, catalyst, adsorbent in the form of powder, formed particulates, and membranes 1–6. Over the last few decades, the synthesis of different zeolites from fly ash has been of great interest to many researchers.…”

Production characterization and efficiency of biodiesel: a review

“…Biodiesel from the lipids of wastewater sludge was studied using SBA‐15 impregnated with the heteropoly acid (HPA) H 3 PO 4 · 12WO 3 · H 2 O (PW 12 ). The biodiesel yield was 30.14% wt for 15% PW 12 at 135 °C and 135 psi in 3 h . Transesterification of waste cooking oil with high acid value was investigated using H 3 PW 12 O 40 · 6H 2 O as catalyst.…”

A Review on the Recent Breakthrough Methods and Influential Parameters in the Biodiesel Synthesis and Purification

“…Furthermore, the use of a solid catalyst can lead to faster and less expensive separation procedures, minimum wastewater discharge, lower production and energy expenditures (Rezania et al, 2022;Siddiquee et al, 2011). Solid catalysts can be carried out in the packed bed reactors as the catalyst bed that simultaneously perform catalytic reaction and separation.…”

“…Heterogeneous catalysts are also less harsh and are used in fixed-bed reactors, leading to a safer, better cost-effective, and eco-friendly process. Their advantage is that they consume less energy during the transesterification process (Awogbemi et al, 2021;Jayakumar et al, 2021;Rezania et al, 2022;Siddiquee et al, 2011). In this process, 10 tons of sodium hydroxide are needed to make 1,000 tons of biodiesel, while the heterogeneous requires only 0.7 tons of magnesium oxide solid catalysts to make 12,500 tons of biodiesel (Jayed et al, 2009).…”