*Article* **Efficient Removal of Eriochrome Black T Dye Using Activated Carbon of Waste Hemp (***Cannabis sativa* **L.) Grown in Northern Morocco Enhanced by New Mathematical Models**

**Fouad El Mansouri 1,\*, Guillermo Pelaz 2, Antonio Morán 2, Joaquim C. G. Esteves Da Silva 3, Francesco Cacciola 4,\*, Hammadi El Farissi 5, Hatim Tayeq 6, Mohammed Hassani Zerrouk <sup>7</sup> and Jamal Brigui <sup>1</sup>**

