<font-awesome-icon icon="fa-brands fa-adn" />
<FontAwesomeIcon icon="fa-brands fa-adn" />
.my-icon::before {
font: var(--fa-font-brands);
content: "\f170";
}
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 496 512" style="width: 30px;height: 30px;fill: black">
<path d="M248 167.5l64.9 98.8H183.1l64.9-98.8zM496 256c0 136.9-111.1 248-248 248S0 392.9 0 256 111.1 8 248 8s248 111.1 248 248zm-99.8 82.7L248 115.5 99.8 338.7h30.4l33.6-51.7h168.6l33.6 51.7h30.2z"/>
</svg>
<i class="fa-brands fa-adn"></i>