Biogas - Waste

The Indonesian government is piloting a new environmental project in one of its villages. It aims to convert the waste water produced during tofu making into biogas. This is a welcome alternative to mere disposal of the waste water into rivers. The project uses methane gas to treat wastewater. The reaction produces biogas and a waste that is safer to be dumped into waterways. The biogas is then used to power homes while the waste can be thrown in rice paddies as fertilizer. The project predicts that it can help reduce the country's pollution levels by 26% by the end of 2020. Moreover, it estimates that it can produce as much as 24,500 liters of biogas on a daily basis. This is far more than the test village needs, consuming only a paltry 91 liters per day to power up homes and offices. Compared to LPG, biogas is a cheaper energy source with far less harmful effects on the environment. Moreover, the conversion of waste into fuel has significantly lessened the local's costs of living. Which of the following are not beneficial effects of the biogas project?