The shell particles have the potential to be employed as a fertiliser since they consist of high levels of potassium (7.1%) and some nitrogen (0.86%) and phosphorous (0.14%) [62,79].
The shell particles have the potential to be employed as a fertiliser since they consist of high levels of potassium (7.1%) and some nitrogen (0.86%) and phosphorous (0.14%) [62,79].