Table 1 Formulation of enablers for the processing of biodiesel from waste cooking oil

1

Awareness to used cooking oil as biodiesel

Used cooking oil drained or repetitive use, main culprit

[58, 62, 66]

2

Human health concern

Used cooking oil misleading human health since is it used as edible oil

[52, 58]

3

Used cooking oil collection center

The collection centers are most influenced by biodiesel production using waste/used cooking oil. To enhance biodiesel production, a sufficient number of collection centers must be established

[54,55,56,57]

4

Biodiesel production facility

To meet the demand for alternating sources of fossil fuel large-scale production facility for biodiesel required

[50, 62, 66]

5

Adequate supply of used cooking oil

Having a steady supply of waste cooking oil for a large-scale manufacturing plant is like breathing fresh air

[53, 60]

6

Production Technology for biodiesel

To meet emission standard and engine compatibility UCO/WCO biodiesel production technology play a vital role

[50, 51, 53]

7

Belief in environment concern

WCO/UCO affects the environment adversely and WCO biodiesel supportive to nature to diesel fuel

[52, 61,62,63,64]

8

Availability of technical expertise

To utilized the WCO and for research and development, an expert in the field required

[59, 64]

9

Financial assistant to biodiesel producer

To promote the production of WCO-based biodiesel financial support Tax, etc.

[59, 65]

10

Quality of human resources

Technical manpower and their training

[59, 64]

11

Biodiesel supportive vehicles

Creating a market for biodiesel production, promoting the people for WCO biodiesel

[56, 61]

12

Government policy and support

Incentives and benefits offered by the government for production and use

[55, 63, 65]